Oceanic Scuba Diving Equipment 04 8791 07 User Manual
OCi OPERATING MANUAL  
OCi  
DIVE COMPUTER  
OPERATING MANUAL  
© 2002 Design, 2013  
Doc. No. 12-5335-r01 (6/27/13)  
1
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OCi OPERATING MANUAL  
CONTENTS  
NOTICES...............................................................................................4  
Select.OP.(Operating).Mode......................................................26  
Scuba.History.-.NORM,.GAUG..................................................27  
FEATURES.AND.FUNCTIONS..............................................................5  
DISPLAY.LAYOUT.............................................................................6  
AbbREvIATIONS..............................................................................6  
INITIAL.ACTIvATION.........................................................................6  
OCI.ID.(SERIAL.NUMbER).............................................................27  
CLEAR.-.NORM...............................................................................27  
DIvE.MODE.FEATURES.....................................................................28  
NORM.DIvE.MODE.STRUCTURE..................................................29  
TRANSMITTER.SIGNAL.RECEPTION.GUIDE...............................29  
PROXIMITY.OF.TRANSMITTERS.TO.OCI.....................................29  
LINK.INTERUPTION.UNDERWATER.............................................29  
WET.ACTIvATION...........................................................................30  
bACKLIGHT....................................................................................30  
Autoglo........................................................................................30  
bAR.GRAPHS.................................................................................30  
TLbG............................................................................................30  
vARI.............................................................................................30  
DUAL.ALGORITHM.........................................................................31  
CONSERvATIvE.FACTOR..............................................................31  
DEEP.STOP.....................................................................................31  
SAFETY.STOP.................................................................................31  
OvERvIEW........................................................................................7  
MENU.SYSTEM.................................................................................7  
OPERATING.MODE.STRUCTURES.................................................8  
PC.INTERFACE.................................................................................9.  
AUDIbLE.ALARM..............................................................................9  
bACKLIGHT....................................................................................10  
Auto.Glo......................................................................................10  
POWER.SUPPLY,.LOW.bATTERY.................................................10  
WATCH.MODE..................................................................................... 11  
WATCH.MAIN.TIME.........................................................................12  
WATCH.ALT.....................................................................................12  
WATCH.MENU.................................................................................12  
Countdown.Timer.Setup............................................................13  
Chronograph...............................................................................13  
Daily.Alarm..................................................................................13  
Set.Time.Menu............................................................................14  
Set.Date.Format......................................................................14  
Set.Hour.Format.....................................................................14  
Set.Dual.Time..........................................................................14  
Set.Time.of.Day......................................................................14  
Set.Date...................................................................................15  
SUMMARY.OF.WATCH.MODE.OPERATIONS...............................15  
DIvE.TIME.REMAINING.(DTR).......................................................32  
No.Deco.DTR.(NDC)...................................................................32  
O2.DTR.(OTR).............................................................................32  
Air.Time.Remaining.(ATR).........................................................32  
RESET.DURING.DIvE.-.ERROR.....................................................32  
NORM.DIvE.MODES...........................................................................33  
NO.DECO.MAIN,.ALTS...................................................................34  
DEEP.STOP.PREvIEW...................................................................34  
DEEP.STOP.....................................................................................34  
SAFETY.STOP.................................................................................35  
NORM.SURFACE.MODES..................................................................16  
Dive.Computer.Operating.Modes.............................................17  
Post.Dive.................................................................................17  
NORM.SURFACE.FUNCTIONS......................................................17  
NORM.SURF.MAIN.AND.ALTS.......................................................18  
NORM.MAIN.MENU.........................................................................18  
Fly/Desat.....................................................................................19  
Plan..............................................................................................19  
Scuba.Log.-.NORM,.GAUG........................................................20  
DECOMPRESSION.........................................................................36  
CONDITIONAL.vIOLATION.(Cv)....................................................36  
DELAYED.vIOLATION.1.(Dv1).......................................................36  
DELAYED.vIOLATION.2.(Dv2).......................................................37  
DELAYED.vIOLATION.3.(Dv3).......................................................37  
vIOLATION.GAUGE.MODE.(vGM).................................................38  
HIGH.PO2........................................................................................38  
HIGH.O2...........................................................................................39  
Set.Gas.Menu.-.NORM...............................................................21  
Set.Gas.1.FO2/PO2.Alarm......................................................20  
Set.Gas.2.(3,.4).FO2/PO2.Alarm............................................21  
Set.FO2.Default.......................................................................22  
NORM.GAS/TMT.SWITCHING............................................................40  
DIGITAL.GAUGE.OP.MODE...............................................................42  
DIGITAL.GAUG.MODE.STRUCTURE.............................................43  
GAUG.SURFACE.MAIN,.ALTS.......................................................44  
GAUG.MAIN.MENU.........................................................................44  
Fly.Time.......................................................................................44  
Run.Timer....................................................................................45  
Set.Alarms.Menu.-.NORM,.GAUG.............................................22  
Set.Audible.Alarm...................................................................22  
Set.Depth.Alarm.....................................................................22  
Set.EDT.Alarm........................................................................22  
Set.TLbG.Alarm......................................................................23  
Set.DTR.Alarm........................................................................23  
Set.Turn.Pressure.Alarm........................................................23  
Set.End.Pressure.Alarm........................................................23  
GAUG.DIvE.MAIN,.ALT..................................................................45  
Delayed.violation.3.(Dv3)..........................................................45  
GAUG.TMT.SWITCHING.................................................................46  
Set.Utilities.Menu.-.NORM,.GAUG............................................24  
Set.Water.Type........................................................................24  
Set.Wet.Activation..................................................................24  
Set.Units..................................................................................24  
Set.Deep.Stop.........................................................................24  
Set.Safety.Stop.......................................................................25  
Set.Algorithm..........................................................................25  
Set.Conservative.Factor........................................................25  
Set.backlight.Duration...........................................................25  
Set.Sampling.Rate..................................................................26  
TMT.Menu................................................................................26  
Set.TMT.1.(2,.3,.4)...................................................................26  
© 2002 Design, 2013  
Doc. No. 12-5335-r01 (6/27/13)  
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OCi OPERATING MANUAL  
CONTENTS.(continued)  
FREE.&.TECH.FREE.DIvE.OP.MODES.............................................47  
OvERvIEW.OF.OPERATIONS........................................................48  
SURFACE.MAIN,.ALTS...................................................................49  
MAIN.MENU.....................................................................................49  
Select.Timer................................................................................50  
Countdown.Timer.Setup............................................................50  
Log.&.History.Modes.-.Day,.Full...............................................50  
Set.Alarms.Menu........................................................................50  
Set.Audible.Alarm...................................................................53  
Set.SRT.(Surface.Recovery.Time).Alarm.............................54  
Set.RTI.(Repeating.Time.Interval).Alarm..............................54  
Set.RDI.(Repeating.Depth.Interval).Alarm............................54  
Set.DD.(Descending.Depth).Alarms.-.FREE.........................55  
Set.DA.(Descending.Ascending.Depth).Alarms.-.TECH.....55  
Set.Utilities.Menu.......................................................................56  
Set.Auto.Glo.-.TECH...............................................................56  
Set.Sampling.Rate.-.TECH.....................................................57  
Set.DSD.(Dive.Start.Depth)....................................................57  
Set.bDSI.(between.Dive.Surface.Interval)...........................57  
REFERENCE.......................................................................................66  
PC.INTERFACE...............................................................................67  
PC.Requirements.......................................................................67  
CARE.AND.CLEANING...................................................................68  
INSPECTIONS.AND.SERvICE........................................................68  
bATTERY.REPLACEMENT.............................................................68  
Data.Retention............................................................................68  
ALTITUDE.SENSING.AND.ADJUSTMENT.....................................69  
TECHNICAL.DATA..............................................................................70  
Z+.ALGORITHM.NDL.CHART.........................................................71  
DSAT.ALGORITHM.NDL.CHART...................................................71  
SPECIFICATIONS............................................................................72  
INSPECTION/SERvICE.RECORD......................................................74  
OCEANIC.WORLDWIDE.....................................................................75  
FREE.&.TECH.FREE.DIvE.MAIN,.ALTS........................................58  
FREE.&.TECH.FREE.DIvE.ALARMS.............................................59  
COMPASS.MODE................................................................................61  
Compass.Icons...........................................................................62  
Compass.Surface.Mode.Logic..................................................62  
COMPASS.MENU............................................................................63  
North.OP.Main............................................................................63  
Reference.OP.Main.....................................................................63  
Reference.Menu..........................................................................64  
Set.Reference.Heading..........................................................64  
Reverse.Reference.Heading..................................................64  
Calibration...................................................................................64  
Declination..................................................................................65  
COMPASS.ALARMS.......................................................................65  
NOTICES  
LIMITED TWO-YEAR WARRANTY  
For details, refer to the Product Warranty Registration Card provided. Register on line at www.oceanicworldwide.com  
COPYRIGHT NOTICE  
This operating manual is copyrighted, all rights are reserved. It may not, in whole or in part, be copied, photocopied, reproduced, translated, or reduced to any electronic  
medium or machine readable form without prior consent in writing from Oceanic/2002 Design.  
OCi Operating Manual, Doc. No. 12-5335  
© 2002 Design, 2013  
San Leandro, CA USA 94577  
TRADEMARK, TRADE NAME, AND SERVICE MARK NOTICE  
Oceanic, the Oceanic logo type, OCi, the OCi logo, Air Time Remaining (ATR), Diver Replaceable Batteries, Graphic Diver Interface, Tissue Loading Bar Graph (TLBG), Pre Dive  
Planning Sequence (PDPS), Set Point, Control Console, Turn Gas Alarm, OceanLog, and Dual Algorithm are all registered and unregistered trademarks, trade names, and service  
marks of Oceanic. All rights are reserved.  
PATENT NOTICE  
U.S. Patents have been issued, or applied for, to protect the following design features:  
Dive Computer with Free Dive Mode and/or Wireless Data Transmission (U.S. Patent no. 7,797,124), Air Time Remaining (U.S. Patent no. 4,586,136 and 6,543,444) and  
Data Sensing and Processing Device (U.S. Patent no. 4,882,678). Other patents pending. User Setable Display (U.S. Patent no. 5,845,235) is owned by Suunto Oy (Finland  
DECOMPRESSION MODEL  
The programs within the OCi simulate the absorption of nitrogen into the body by using a mathematical model. This model is merely a way to apply a limited set of data to a  
large range of experiences. The OCi dive computer model is based upon the latest research and experiments in decompression theory. Still, using the OCi, just as using  
the U.S. Navy (or other) No Decompression Tables, is no guarantee of avoiding decompression sickness, i.e. “the bends.” Every diver’s physiology is  
different, and can even vary from day to day. No machine can predict how your body will react to a particular dive profile.  
© 2002 Design, 2013  
Doc. No. 12-5335-r01 (6/27/13)  
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OCi OPERATING MANUAL  
FEATURES  
AND  
FUNCTIONS  
© 2002 Design, 2013  
Doc. No. 12-5335-r01 (6/27/13)  
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OCi OPERATING MANUAL  
DISPLAY LAYOUT  
ICONS  
Depth id  
Time id  
Temp or  
Heading  
Dot Matrix  
Daily AL or  
TMT Link  
FO2 is  
Nitrox  
Pressure id  
Air  
Time  
Low  
Battery  
DISPLAY ABBREVIATIONS  
A
= AM or Am (time)  
= Activation  
= Alarm  
= Algorithm  
= Air Time Remaining  
= Audible  
FO2  
FORM  
FREE  
FRSH  
FT  
GAUG  
GLO  
H
HIST  
HR  
ID  
INTVL  
IMP  
M
= Fractional % of Oxygen  
OTR  
P
PC  
PO2  
PSI  
RDI  
REF  
= O2 Time Remaining  
= PM or Pm (time)  
= Personal Computer  
= Partial Pressure of O2 (ATA)  
= Pounds per Square Inch (pressure)  
= Repeating Depth Interval  
= Reference (compass mode)  
ACTIV  
AL  
= Format (date, time)  
= Free Dive Mode  
= Fresh (water)  
ALGO  
ATR  
AUD  
BATT  
BDSI  
C
= Feet (depth)  
= Digital Gauge Dive Mode  
= Glow (backlight)  
= Hour (time)  
= History  
= Hour (time)  
= Battery  
= Between Dive Surface Interval  
= Centigrade (temperature)  
= Calibrate (compass)  
= Countdown Timer  
REPET = Repeating (interval alarm)  
REV  
RTI  
S
S
SAT  
SE  
SEC  
SEL  
SN  
SPG  
SRT  
SURF  
SW  
TAT  
TECH  
TLBG  
TMR  
TMT  
UTIL  
VARI  
VIOL  
W
= Revision (firmware)  
= Repeating Time Interval  
= Seconds (time)  
= South (compass)  
= Saturation  
= Southeast (compass)  
= Seconds (time)  
= Select  
CAL  
CDT  
= Identification (module)  
= Interval (time)  
CHRONO= Chronograph (stop watch)  
COMM = Communications  
CONS  
CONSERV = Conservative Factor  
D.M  
DA  
= Imperial (units)  
= Meters (depth)  
= Minutes (time)  
= Month & Day (date)  
= Maximum  
= Conservative Factor  
M
= Day & Month (date)  
= Descend/Ascend (depth alarm)  
= Descending Depth (alarm)  
M.D  
MAX  
MET  
MIN  
N
NDC  
NDL  
NE  
= Serial Number  
DD  
= Metric (units)  
= Submersible Pressure Gauge  
= Surface Recovery Time  
= Surface (mode, time)  
= Southwest (compass)  
= Total Ascent Time (deco)  
= Technical Free Dive Mode  
= Tissue Loading Bar Graph  
= Timer  
= Transmitter (tank pressure)  
= Utilities (set mode)  
= Variable Ascent Rate Indicator  
= Violation  
DECLIN = Declination (compass)  
DECO = Decompression  
DESAT = Desaturation (nitrogen)  
DFLT  
DSAT  
DSD  
DTR  
DURA  
E
= Minutes (time)  
= North (compass)  
= No Deco Time Remaining  
= No Deco Limit (time)  
= Northeast (compass)  
= Nitrogen  
= Default  
= Algorithm type  
= Dive Start Depth  
= Dive Time Remaining  
= Duration (backlight time)  
= East (compass)  
= Elapsed Dive Time  
= Elevation (altitude level)  
= Farenheit (temperature)  
NI  
NO-D  
= No Decompression  
NORM = Normal Dive Mode  
NW  
Nx  
O2  
OP  
= Northwest (compass)  
= Nitrox (gas)  
= Oxygen  
EDT  
EL  
F
= Operating (mode)  
= West (compass)  
Z+  
= Algorithm type  
INITIAL ACTIVATION  
OCi Watch/Dive Computers are placed in a Deep Sleep mode prior to being shipped from the factory. The intent is to extend storage life of the Battery for  
up to 7 years, before the unit is initially placed in service.  
In this mode, Date and Time are updated as they normally would be. However, they are not displayed. Upon waking the OCi up, the correct Date and  
USA Pacific Time will be displayed and it will be ready to operate with full functions.  
To wake the OCi up from Deep Sleep mode, simultaneously depress the upper/right (S) and lower/left (A) buttons for 3 seconds until the display comes full  
ON displaying the Watch Main Time screen, then release them.  
NOTE: Once the OCi is brought out of the Deep Sleep mode, it can only be placed back into it by the factory.  
© 2002 Design, 2013  
Doc. No. 12-5335-r01 (6/27/13)  
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OCi OPERATING MANUAL  
OVERVIEW  
Watch, Pressure Integrated Dive Computer featuring >>  
• 4 Control Buttons.  
• 6 Operating Modes.  
• Dual Watch Time.  
• Audible Alarm with flashing LED.  
• Digital Compass.  
• Altitude Compensation.  
• 15+ Menus.  
• 60+ Set Selections.  
• Increase/Decrease Set Values.  
• up to 4 Nitrox Gas Mixes.  
• up to 4 Pressure Transmitters.  
• 30+ Warnings/Alarms.  
• User Replaceable Battery.  
• Dual Algorithm.  
• NDL Conservative Factor.  
• No Deco Deep Stop.  
• No Deco Safety Stop.  
• Gas Switching.  
• Transmitter Switching.  
• Gauge Dive Run Timer.  
• Depths to 330 FT/100 M.  
• Tech Free Depths to 495 FT/150 M.  
• Free & Tech Free Dive Run Timers.  
• Free & Tech Free Countdown Timers.  
• Variable Ascent Rate.  
• PC Settings Upload/Data Download.  
• User Upgradeable Firmware.  
INTERACTIVE CONTROL CONSOLE  
M
A
S
L
The Interactive Control Console utilizes 4 control buttons that allow you to maneuver through the OCi's unique system of menus.  
The buttons will be referred to as M, S, L, and A.  
OCi  
• Upper/Left - Mode (M) button.  
• Upper/Right - Select (S) button.  
• Lower/Right - Light (L) button.  
• Lower/Left - Advance (A) button.  
MENU SYSTEM  
The Dot Matrix located in the middle of the LCD viewing area is used to display alpha numeric messages and measured values  
as well as Menu type systems for selection of settings and various auxiliary functions. It also serves as the Digital Compass which  
can be accessed during operation in any mode.  
FREE  
MAIN.MENU  
There are 15 Menus that include the -  
• Watch Main Menu.  
• NORM Main Menu.  
• GAUG Main Menu.  
• FREE Main Menu.  
• Set Time Menu.  
• Set Gas Menu.  
SEL  
• Set Alarms Menu.  
• Set Utilities Menu.  
• Set TMT Menu.  
• Set Compass Declination Menu.  
• Compass Reference Menu.  
SEL.TIMER  
>
• TECH FREE Main Menu.  
• Compass Main Menu.  
• Log/History Menu.  
• Gas/TMT Switch Menu.  
CDT.SETUP  
LOG/HISTORY  
SET.ALARMS  
SET.UTILITIES  
OP.MODE  
Each Menu has a Start (First) selection and a Stop (Last) selection. Upon entering a Menu, movement through it begins at the  
Start (First) selection, then continues in a rolling manner down the screen showing selections in groups of 3 items.  
• The sample at the right shows how a menu would look if all of the selections could be displayed on one screen.  
Menu button action >>  
M (< 2 sec) - to access Menu.  
A (< 2 sec) - to step down the screen (forward) through selections.  
M (< 2 sec) - to step up the screen (backward) through selections.  
S (< 2 sec) - to access selection indicated by Arrow icon ( > ).  
OCi.ID  
Sample Menu  
(all selections shown)  
Right Arrow icon ( > ) at the left indicates the selection.  
Down Arrow icon ( v ) at the right indicates that additional selections are available below (after) those shown.  
Up Arrow icon ( ^ ) at the right indicates that additional selections are available above (before) those shown.  
M
A
S
L
There is a selection above.  
There is a selection below.  
Selection can  
be accessed.  
© 2002 Design, 2013  
Doc. No. 12-5335-r01 (6/27/13)  
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OCi OPERATING MANUAL  
WATCH MODE STRUCTURE  
COMPASS MODE STRUCTURE  
SURFACE  
Dive Op  
Mode  
Watch or  
DC Main  
Ack  
Daily AL  
2 s  
< 2 s  
2 s  
< 2 s  
Compass  
Op Main  
Select  
North  
Reference  
Calibrate  
2 s  
< 2 s  
2 s  
Select  
CDT Setup  
Chrono  
Daily AL  
> Time Menu  
Main  
Menu  
Main  
Menu  
2 s  
M
A
S
M
S
WATCH..  
MAIN  
COMP.OP.  
MAIN  
> Set Declin  
L
< 2 s  
A
L
ALT  
Light  
Light  
- - - - - - - - - - - -  
< 2 s - On/Off.  
2 s - reset timer.  
On - during Aud.  
Off - by timer.  
- - - - - - - - - - - -  
< 2 s - On/Off.  
2 s - reset timer.  
On - during Aud.  
Off - by timer.  
(if REF)  
< 2 s  
Set Time Menu  
> Date Format  
Hour Format  
Dual Time  
Time  
Set Declin Menu  
> Declin Off  
Declin East  
Ref Menu  
> Set Heading  
Reverse  
Declin West  
Date  
NORM SURFACE MODE STRUCTURE  
GAUG SURFACE MODE STRUCTURE  
Watch  
Mode  
Watch  
Mode  
2 s  
2 s  
Select  
> Fly/Desat  
Plan  
Log  
Set G  
Set A  
Set U  
OP Mode  
History  
OCi ID  
Batt/TMT  
Compass  
Op Main  
Main  
Menu  
Compass  
Op Main  
2 s  
< 2 s  
2 s  
2 s  
< 2 s  
2 s  
Select  
> Fly  
Log  
Set A  
Set U  
OP Mode  
History  
OCi ID  
Batt/TMT  
Main  
Menu  
M
A
M
A
S
L
S
L
SURF.  
MAIN  
SURF.  
MAIN  
< 2 s  
< 2 s  
ALTs  
Light  
Light  
ALTs  
- - - - - - - - - - - -  
< 2 s - On/Off.  
2 s - reset timer.  
On - during Aud.  
Off - by timer.  
- - - - - - - - - - - -  
< 2 s - On/Off.  
2 s - reset timer.  
On - during Aud.  
Off - by timer.  
NORM & GAUG SET MENU STRUCTURE  
FREE & TECH FREE SURF MODE STRUCTURE  
NORM, GAUG  
Main Menu  
Watch  
Main  
2 s  
Compass  
Op Main  
2 s  
< 2 s  
2 s  
Main  
Menu  
Select  
> SEL Timer  
CDT Setup  
Log/History  
Set A  
Set U  
OP Mode  
OCi ID  
M
A
S
L
S
< 2 s  
S
< 2 s  
S
< 2 s  
SURF.  
MAIN  
< 2 s  
ALTs  
Set G Menu**  
> Gas 1  
Gas 2  
Gas 3  
Gas 4  
Set A Menu  
> Aud AL  
Depth AL  
EDT AL  
TLBG AL**  
DTR AL**  
Turn AL  
Light  
Set U Menu  
Water Type  
Wet Activ  
- - - - - - - - - - - -  
< 2 s - On/Off.  
2 s - reset timer.  
On - during Aud.  
Off - by timer.  
Units  
Deep Stop**  
Safety Stop**  
Algorithm**  
Conserv**  
Glo Dura  
FO2 Default  
End AL  
Sampling  
> TMT Menu  
Set TMT Menu  
> TMT 1  
TMT 2  
** = NORM only  
TMT 3  
TMT 4  
© 2002 Design, 2013  
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OCi OPERATING MANUAL  
PC (PERSONAL COMPUTER) INTERFACE  
Interface with a PC (including Apple), to allow uploading settings and downloading data, is accomplished by connecting the OCi to a PC USB port using  
the special Oceanic USB interface cable.  
The software program together with the USB driver required is on the Oceanic Product CD, or it can be downloaded from the Oceanic web site. The  
program's Help serves as the user manual which can be printed for personal use.  
The settings upload portion of the computer interface program can be used to set/change the Watch, Scuba, and Free mode selections using the same  
interface system.  
Information available for retrieval (download) from the OCi to the download portion of the program includes items such as dive number, surface interval  
time, start/end depths, max depth, elapsed dive time, start date/time, lowest temperature, sampling rate, dive profile, and set points.  
The computer interface program also allows update of select versions of the OCi's firmware (operating system software).  
• Refer to page 26 for more details relating to the computer interface system.  
AUDIBLE ALARM  
While operating in NORM or GAUG Mode the Audible will emit 1 beep per second for 10 seconds when alarms strike, unless it is set Off. During that  
time, the Audible can be silenced by pressing the S button momentarily (less than 2 seconds).  
An LED Warning Light, on the side of the housing, is synchronized with the Audible and flashes as the Audible sounds. It will turn off when the Alarm is  
silenced. The Audible and LED will not be active if the Audible is Set OFF (a Set Alarms setting).  
FREE Dive Modes have their own Alarms which emit multiple beeps multiple times which cannot be acknowledged or set Off.  
Events that emit (10) beeps >> each sound for .500 sec with .500 sec silence between beeps:  
• Watch Daily Alarm.  
• Watch CDT Alarm.  
• NORM, GAUG - ATR Warning & Alarm.  
• NORM, GAUG - Turn Pressure Alarm (TMT 1).  
• NORM, GAUG - End Pressure Alarm (TMT in use).  
• NORM, GAUG - Loss of Link (Dive Mode).  
• NORM, GAUG - Ascent Rate too fast.  
• NORM, GAUG - Depth Alarm.  
• NORM, GAUG - EDT Alarm.  
• NORM - DTR Alarm.  
• NORM - TLBG Alarm.  
• NORM - entry into Deco.  
• NORM - Conditional Violation.  
• NORM - Delayed Violations 1, 2.  
• NORM, GAUG - Delayed Violation 3.  
• NORM, GAUG - entry into Violation Gauge Mode.  
• NORM - PO2 Warning and Alarm.  
• NORM - O2 Warning and Alarm.  
• NORM - Gas Switch Alarm.  
Events that emit (3) beeps >> each sound for .500 sec with .500 sec silence between beeps:  
• NORM, GAUG - Ascent Rate warning.  
• FREE - Delayed Violation 3.  
Events that emit (3) sets of (3) beeps >> each sound for .500 sec with .250 sec silence between beeps and .500 sec silence between sets:  
• FREE, TECH FREE - SRT Alarm.  
• FREE, TECH FREE - RDI Alarm. RDI is not to alarm at the DD or DA alarm depths.  
• FREE, TECH FREE - CDT Alarm.  
• FREE - TLBG Alarm.  
• FREE - Violation, entry into Deco.  
Events that emit (3) sets of (3) beeps >> each sound for .125 sec with .125 sec silence between beeps and .250 sec silence between sets:  
• FREE - DD1 to DD3 Alarms.  
Events that emit (2) beeps >> each sound for 1 sec with .500 sec silence between beeps:  
• FREE, TECH FREE - RTI Alarm.  
Events that emit (1, 2 or 3)* sets of (1 to 10)* beeps >> each sound for .125 sec with .125 sec silence between beeps and .250 sec silence between sets:  
• TECH FREE - DA1 to DA6 Alarms.  
*Each DA is user adjustable.  
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OCi OPERATING MANUAL  
BACKLIGHT  
To turn the Backlight On, press and release the L button (< 2 seconds). The Backlight will remain On for the duration time set (a  
Set Utilities selection) unless you turn it Off during that time by pressing S again.  
• The Backlight will come On (even if set OFF) when alarms strike and remain On until turned Off by pressing S, or it turns Off  
automatically after 10 seconds .  
• Pressing and releasing the L button (< 2 seconds), while the Backlight is On, will turn it Off.  
• Depressing the L button for 2 seconds, while the Backlight is On, will reset the duration timer and extend the On time to the  
full duration time set.  
• If the L button is depressed for more than 60 seconds, the Backlight will be disabled and not turn On until the button is  
released then pressed/released again.  
• The Backlight will be disabled when there is a Low Battery alarm condition, and be re enabled once the battery is replaced.  
• Extensive use of the Backlight reduces Battery use life.  
• Turning the Backlight Off when it is not being used will help extend Battery use life.  
• The Backlight does not operate when the unit is connected to a PC or Mac.  
Auto Glo:  
When Auto Glo (a TECH FREE mode Set Utilities selection) is set On, Backlight operation on the surface in TECH FREE mode is  
controlled as it normally would be by the L button and duration time set.  
However, upon entry into dive mode, the Backlight activates (turns On) automatically and remains On throughout the full dive  
until entry into Surface mode when the Backlight operation reverts to normal.  
POWER SUPPLY  
• Battery >> (1) 3 vdc, CR2450, Lithium battery.  
• Shelf life >> up to 7 years (when shipped from factory in Deep Sleep mode).  
• Use life >> 1 year or 300 dive hours if (2) 1 hour dives per dive day.  
• Replacement >> user replaceable (annual recommended).  
Battery icon:  
• Warning >> icon on solid when < 2.75 volts, battery change recommended.  
• Alarm >> icon on flashing with message when < 2.50 volts, change the battery.  
Low Battery when on the surface:  
<= 2.75 volts (warning level)  
• Backlight is completely disabled*.  
• Battery icon (shell with inner bar) appears solid (Fig. 1a).  
• If a dive is started, the icon is not displayed on the dive mode screens.  
• Watch and DC functions*, including Compass Mode, continue to be available.  
*TECH FREE dives cannot be started if Auto Glo is set On, due to the Backlight being disabled.  
a
Fig. 1 - LOW BATT WARNING  
(Watch Main Time)  
<=2.50 volts (Too Low - alarm level)  
• All DC operations cease and the unit operates only as a Watch with Compass (view only).  
• Low Battery icon (shell only with no inner bar) flashes for 5 seconds and operation reverts to Watch Time with Compass  
allowed (view only) until the Battery is changed or voltage cannot sustain operation, then the graphic CHANGE BATTERY  
flashes until the Battery is changed or voltage drops to the level at which operation cannot be maintained.  
Low Battery during a dive:  
<= 2.75 volts (warning level)  
• Backlight is completely disabled**.  
• Full DC functions and Compass continue to be available.  
• Battery icon is not displayed on the dive mode screens.  
• Battery icon (shell with inner bar) appears solid upon entry into Surface Mode.  
<= 2.50 volts (Too Low - alarm level)  
• Backlight is completely disabled**.  
• Full DC functions continue to be available during the dive.  
• Battery icon is not displayed on the dive mode screens.  
• Upon entry into Surface Mode, the Battery icon (shell only with no inner bar) and graphic CHANGE BATTERY flash for  
5 seconds (Fig. 2) and operation reverts to Watch Time with Compass (view only) allowed, until the Battery is changed  
or voltage cannot sustain operation, then the graphic CHANGE BATTERY flashes until the Battery is changed or voltage  
drops to the level at which operation cannot be maintained.  
**The Backlight will not be disabled during TECH FREE dives, when Auto Glo is set On.  
Fig. 2 - LOW BATT ALARM  
(NORM Surface Main)  
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OCi OPERATING MANUAL  
WATCH  
MODE  
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OCi OPERATING MANUAL  
WATCH MAIN TIME  
Main Time is the default screen displayed while in Watch Mode. Displayed are Time of Day, Day of the Week and Date. Dual  
Time, which is an hour based differential that you can set, can also be displayed.  
Once Dual Time is set (by hour differential) and turned On, it will automatically change when the Main Time setting is changed.  
For Log entries to be identified properly, the Watch Date/Time will need to be changed to match the local Date/Time where you  
are diving. Log entries are not based on Dual Time.  
While viewing Watch Main Time you can access an Alternate screen of additional information or a menu group of functions in-  
cluding a Countdown Timer, Chronograph, Daily Alarm, and Time Set Menu. You can also access the Dive Computer Operating  
Mode previously selected or Compass Mode.  
Fig. 3A - MAIN TIME  
(without Dual Time)  
WATCH MAIN TIME, information includes (Fig. 3A/B):  
> Dual Time (hr:min) with icon, if set and selected to be on Main.  
> Time of Day (hr:min_sec), with A or P if 12 hour format.  
> Day of Week graphic MON, TUE, WED, THU, FRI, SAT, or SUN.  
> Month.Day (or Day.Month).  
> TLBG, if any after NORM or FREE dives.  
> Alarm (speaker) icon, if the Daily Alarm is set On.  
> Battery icon, if a Low Battery condition.  
Fig. 3B - MAIN TIME  
(with Dual Time)  
• M (< 2 sec) - to access the Watch Main Menu.  
• M (2 sec) - to access the DC (Dive Computer) Mode last selected.  
• A (< 2 sec) - to access the Watch ALT screen.  
• A (2 sec) - to toggle (move) Dual Time between the Main and ALT screens.  
• S (< 2 sec) - to silence the Daily Alarm.  
• S (2 sec) - to access Compass Mode.  
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.  
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.  
WATCH ALT, information includes (Fig. 4A/B):  
Fig. 4A - WATCH ALT  
(Dual Time On, not on Main)  
> Dual Time (hr:min) if set On or graphic OFF with icon, blank if on Main.  
> Graphic CDT (Countdown Timer) with OFF or Countdown Time (hr:min), time previously set or that remaining.  
> Altitude graphic EL2 (to EL 7), blank if Sea level.  
> Temperature with ° icon and graphic F (or C).  
If the CDT is On and running with time remaining -  
• S (< 2 sec) - to stop/start the Timer.  
• A (2 sec) - to reset the Timer to the hr:min value set.  
• A (< 2 sec) - to revert to the Main with the CDT running in the background.  
If the CDT is Off, or it was running and has counted down to 0:00 -  
• A (< 2 sec) - to revert to the Main.  
• 10 sec - reverts to Main.  
Fig. 4B - WATCH ALT  
(Dual Time set Off)  
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.  
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.  
WATCH MAIN MENU, information includes (Fig. 5A/B):  
> CDT Setup >> To select Off, On, or Set (hr:min).  
> Chrono >> To Start, Stop, Recall Laps, and Reset.  
> Daily Alarm >> To select Off, On, or Set (hr:min).  
> Time Menu >> To select/set Date Format, Hour Format, Dual Time (differential), Time, Date.  
Fig. 5A - MAIN MENU  
(first 3 items)  
• M or S (2 sec) - to revert to the Watch Main.  
• If no button is pressed during a period of 2 minutes, operation will revert to the Watch Main.  
• A (< 2 sec) - to step forward (advance down) through the selections indicated by the pointer icon ( > ) along the left side of  
the matrix.  
Once the pointer icon ( > ) reaches the lower selection on the matrix, it will remain in that position pointing to the next selec-  
tion that appears when A is pressed. A down arrow icon located on the right side of the matrix indicates that additional  
selections are available below those displayed.  
• M (< 2 sec) will step back through the selections.  
Fig. 5B - MAIN MENU  
(last 3 items)  
Once the pointer icon ( > ) reaches the upper selection on the matrix, it will remain in that position pointing to the next  
selection that appears when M is pressed. An up arrow icon located on the right side of the matrix indicates that additional  
selections are available above those displayed.  
• S (< 2 sec) when the pointer ( > ) icon is next a selection will access (go to) that item.  
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CDT (Countdown Timer) SETUP, information includes (Fig. 6A/B):  
> Graphics CDT SETUP solid with OFF (or ON) flashing and SET solid.  
> Remaining Countdown Time (hr:min) if ON and a countdown is in progress, or 0:00 if ON and no time is remaining, or  
0:00 or the time previously set if OFF.  
• A (< 2 sec) - to step forward through the selections OFF, ON, and SET.  
• S (2 sec) - to revert to the Watch Main Menu.  
If OFF or ON is flashing, S (< 2 sec) will save the selection and revert to the Watch Main Menu.  
ON does not start the countdown, start/stop is controlled while viewing the Watch ALT screen.  
If SET is flashing, S (< 2 sec) will access Set CDT.  
Fig. 6A - CDT SETUP  
(Off, not yet set)  
Once the CDT has been set and turned ON (ready to start, but not started), it will be displayed on the Watch ALT screen  
where it can be started, stopped, or reset until set OFF. When the countdown reaches 0:00, the Audible will sound (10 sec)  
during which 0:00 and CDT will be displayed on the Watch Main Time screen in place of Dual Time and Day of Week.  
Upon entering any Dive Computer mode, Watch CDT operation will be terminated and the countdown time will revert to the  
hr:min value previously set.  
Fig. 6B - CDT SETUP  
(On, running)  
Set CDT, information includes (Fig. 7):  
> Graphics CDT SETUP, solid.  
> Graphics OFF, ON, and SET solid.  
> Time (hr:min), Hour digits flashing.  
• A (hold) - to scroll upward through the Hour set points at 8/second from 0: to 23: in 1 hour (1:) increments.  
• A (< 2 sec) - to step up through the set points one at a time.  
• M (< 2 sec) - to step back through the set points one at a time.  
• S (< 2 sec) - to save the Hour setting and flash the Minute digits.  
• A (hold) - to scroll upward through the Minutes set points at 8/second from :00 to :59 in 1 minute (:01) increments.  
• A (< 2 sec) - to step up through the set points one at a time.  
• M (< 2 sec) - to step back through the set points one at a time.  
Fig. 7 - SET CDT  
(hour then minutes)  
• S (< 2 sec) - to save the hour:minute set point, with SET flashing allowing OFF or ON to be selected (see Setup above).  
• S (2 sec) - to revert to the Watch Main Menu.  
FREE Mode has a separate (min:sec) CDT.  
CHRONOGRAPH (Stop Watch/Lap Timer), information includes (Fig. 8A/B):  
> Graphic LAP1 (or 2 up to 9) if previously started or blank if not yet started  
> Graphic CHRONO.  
> Elapsed time if previously started, or 0:00:00.00 (hr:min:sec_ .01 sec) if not yet started, flashing.  
• S (upon press) - to display the graphic LAP1 and start the Chrono (run time) which will begin counting up from 0:00:00.00  
to 9:59:59.99 hr:min:sec_ .01sec in increments of .01 (1/100th sec). After the first 4.99 seconds, the .01 sec digits will  
be displayed as 2 dashes ( . - - ).  
• S (upon press) - to save Lap 1’s time and display the graphic LAP2 with the Timer continuing to count up. Total Run Time is  
always displayed until the Chrono is stopped.  
• S (upon press) - to freeze Lap Times (1 up to 9). After 9, subsequent Laps will be recorded and the earliest Lap discarded.  
Freezing of a Lap Time is prevented when S is operated during an Alarm strike.  
Fig. 8A - CHRONO  
(started, running)  
If the Chrono continues to run and reaches 9:59:59.99, it will stop and record that as a Lap. Subsequent presses of S then  
have no effect.  
• A (< 2 sec) - to stop the Chrono and recall Lap 1 displaying the graphic LAP1 and the Lap time. Subsequent presses of A  
will recall the other Laps.  
• A (2 sec) - to stop the Chrono if running, and reset it to 0:00:00.00.  
• M (2 sec) - to revert to Watch Main with Chrono running in the background.  
Fig. 8B - CHRONO  
(started, frozen or recalled)  
Once the Chrono has been set and started, it will remain on display (or continue to run in the background) while on the  
surface until reset by the user. Upon descending to 5 FT/1.5 M (i.e., entry into Dive Mode), operation will be terminated  
and the counter will reset to 0:00:00.00 (hr:min:sec.xx).  
DAILY ALARM  
When set On, the Daily Alarm, that runs in the background, will sound the Audible at the time set every day. The Audible will  
not sound while operating in dive computer modes.  
Daily Alarm Status, information includes (Fig. 9):  
> Graphics DAILY ALARM solid, with OFF (or ON) flashing.  
> Alarm Time (hr:min) last set, with graphic AM (or PM) if 12 Hour Format.  
• A (< 2 sec) - to step forward (down) through the selections OFF, ON, and SET.  
• M (< 2 sec) - to step back (up) through the selections.  
• S (< 2 sec) - to save the selection that is flashing.  
Fig. 9 - DAILY ALARM  
STATUS (upon access)  
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OCi OPERATING MANUAL  
>> If OFF is selected, operation reverts to the Menu.  
>> If ON is selected, operation reverts to the Menu with the Alarm enabled.  
>> If SET is selected, Set Daily Alarm is accessed.  
Set Daily Alarm, information includes (Fig. 10):  
> Graphics DAILY ALARM, OFF, ON, and SET solid.  
> Alarm Time (hr:min) with Hour digits flashing, with AM (or PM).  
• A (hold) - to scroll upward through Hour set points 8/sec from 0: to 23: in increments of 1: (hr).  
• A (< 2 sec) - to step upward through Hour set points one at a time.  
Fig. 10 - SET DAILY AL  
• M (< 2 sec) - to step back through Hour set points one at a time.  
• S (< 2 sec) - to save the Hour set point and flash the Minute digits.  
• A (hold) - to scroll upward through Minute set points 8/sec from :00 to :59 in increments of :01 (min).  
• A (< 2 sec) - to step upward through Minute set points one at a time.  
• M (< 2 sec) - to step back through Minute set points one at a time.  
• S (< 2 sec) - to save the setting (hr:min digits solid) and flash the graphic SET allowing ON or OFF to be selected/saved.  
SET TIME MENU, information includes (Fig. 11):  
> Graphic SEL (Select).  
> Graphic selections - DATE FORM, HOUR FORM, DUAL TIME, TIME, DATE (with 3 selections per screen).  
Fig. 11 - SET TIME MENU  
• A (< 2 sec) - to step down (forward) through the selections.  
• M (< 2 sec) - to step up (back) through the selections.  
• S (< 2 sec) - to access the menu selection indicated by the pointer icon ( > ).  
Set Date Format, information includes (Fig. 12):  
Date Format establishes the position that the Month (M) digits are displayed relative to the Day (D) digits, on the left or right.  
> Graphic DATE FORM (Format).  
> Graphics M.D and D.M with the pointer icon ( > ) next to the one previously saved flashing.  
Fig. 12 - SET DATE FORMAT  
• A or M (< 2 sec) - to toggle between M.D and D.M.  
• S (< 2 sec) - to save the settings and revert to the menu.  
Set Hour Format, information includes (Fig. 13):  
> Graphic HOUR FORM (Format).  
> Graphics 12 and 24 with the pointer icon ( > ) next to the one previously saved flashing.  
• A (< 2 sec) - to toggle between 12 and 24.  
• S (< 2 sec) - to save setting and revert to the menu.  
Set Dual Time, information includes (Fig. 14):  
This feature sets an Hour based differential ranging from - 23 through 0 to + 23 (hours). Once the differential is selected/saved,  
Dual Time values displayed are based on the Time of Day set.  
Fig. 13 - SET HOUR FORMAT  
> Graphics DUAL TIME solid, with OFF or ON flashing, and SET solid  
> +/- numeric Hour differential with graphic Hour, solid.  
• A (< 2 sec) - to step down (forward) through the selections OFF, ON, SET.  
• M (< 2 sec) - to step up (back) through the selections.  
• S (< 2 sec) - to save the selection, and revert to the menu if OFF or ON is selected. If SET is selected/saved, the differential  
digits will flash allowing them to be changed.  
Fig. 14 - SET DUAL TIME  
• A (hold) - to scroll upward through the differential set points 8/sec from - 23 through 0 to + 23 in increments of 1.  
• A (< 2 sec) - to step upward through the set points one at a time.  
• M (< 2 sec) - to step back through the set points one at a time.  
• S (< 2 sec) - to save the differential setting (digits solid) and flash the graphic SET allowing ON or OFF to be selected/saved.  
Set Time of Day, information includes (Fig. 15):  
> Graphics TIME OF DAY solid, with HOUR flashing and MIN solid.  
> Time of Day (hr:min), with Hour digits flashing, with graphic AM (or PM) if 12 Hour Format.  
• A (hold) - to scroll upward through Hour set points 8/sec from 12: AM to 11: PM or 0: to 23: if 24 Hour Format, in  
increments of 1: (hr).  
• A (< 2 sec) - to step upward through Hour set points one at a time.  
• M (< 2 sec) - to step back through Hour set points one at a time.  
Fig. 15 - SET TIME  
• S (< 2 sec) - to save the Hour set point, move the pointer icon to MIN, and flash the MIN icon and Minute digits.  
• A (hold) - to scroll upward through Minute set points 8/sec from :00 to :59 in increments of :01 (min).  
• A (< 2 sec) - to step upward through Minute set points one at a time.  
Day of the week is set  
automatically based on the  
Date set.  
• M (< 2 sec) - to step back through Minute set points one at a time.  
• S (< 2 sec) - to save the Time setting and revert to the Set Time Menu.  
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OCi OPERATING MANUAL  
Set Date, information includes (Fig. 16):  
The sequence for setting date is Year, then Month, then Day, regardless of the Date Format set.  
> Graphic DATE.  
> Graphics YEAR MNTH.DAY (or (DAY.MNTH).  
> Date with Year digits flashing.  
• A (hold) - to scroll upward through Year set points 8/sec from 2013 to 2056.  
• A (< 2 sec) - to step upward through Year set points one at a time.  
• M (< 2 sec) - to step back through Year set points one at a time.  
• S (< 2 sec) - to save the Year setting and flash the Month digits.  
Fig. 16 - SET DATE  
• A (hold) - to scroll upward through Month set points 8/sec from 1 to 12 in increments of 1.  
• A (< 2 sec) - to step upward through Month set points one at a time.  
• M (< 2 sec) - to step back through Month set points one at a time.  
• S (< 2 sec) - to save the Month setting and flash the Day digits.  
• A (hold) - to scroll upward through Day set points 8/sec from 1 to 31 (max) in increments of 1.  
• A (< 2 sec) - to step upward through Day set points one at a time.  
• M (< 2 sec) - to step back through Day set points one at a time.  
• S (< 2 sec) - to save the Date setting and revert to the Set Time Menu.  
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------  
SUMMARY OF  
WATCH MODE OPERATIONS  
M
2 sec  
DC.Op.Mode  
Watch  
Main  
Time  
S
2 sec  
Compass  
ALT  
Light  
S
< 2 sec  
A
Start/Stop CDT  
Reset CDT  
A
< 2 sec  
2 sec  
M
< 2 sec  
M or S  
2 sec  
Menu  
>.CDT  
back to  
Setup  
S
S
if  
Set  
SET  
< 2 sec  
< 2 sec  
S
< 2 sec  
S
Setup  
S
if ON  
or OFF  
A
back to Menu  
< 2 sec  
2 sec  
< 2 sec  
< 2 sec to Stop, Recall Laps  
2 sec to Reset, back to Status  
S
S
press  
A
Start/Stop  
Status  
Status  
...Chrono  
...Daily.AL  
...Time  
S 2 sec while  
viewing Menu to  
revert to Main.  
< 2 sec  
M
< 2 sec  
S
< 2 sec  
S
back to  
Status  
S
S
Set  
Set  
< 2 sec  
< 2 sec  
2 sec  
S
< 2 sec  
S
Menu  
>.Date.Format  
...Hour.Format  
...Dual.Time  
...Time  
back to  
Menu  
S
S
2 sec  
< 2 sec  
< 2 sec  
Changing.Settings  
A (< 2 sec) - to toggle, step up.  
A (hold) - to scroll up.  
M (< 2 sec) - to step down.  
S (< 2 sec) - to save.  
...Date  
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OCi OPERATING MANUAL  
NORM  
SURFACE MODES  
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OCi OPERATING MANUAL  
DIVE COMPUTER OPERATING MODES  
NORM Mode >> for Air and Nitrox SCUBA activity with up to 4 Gases and 4 Transmitters.  
GAUG Mode >> for SCUBA activity with Depth/Time indication and up to 4 Transmitters.  
FREE Mode >> for general breath hold diving activities with Depth/Time indication.  
TECH FREE Mode >> for very deep breath hold diving activities with Depth/Time indication.  
If no previous dive has been taken within the past 24 hours, NORM is the default upon access from Watch Time. Others operating modes can be accessed  
from the Main Menu.  
At any time while operating in Surface Modes, operation will enter the Scuba dive mode selected (NORM or GAUG) upon descent to 5 FT (1.5 M) for 5  
seconds, or the FREE dive mode selected upon descent to the DSD (Dive Start Depth) set for 5 seconds.  
• When Wet Activation is set Off, dive mode will only activate when operating in a Dive Computer mode. It will not activate while in Watch Mode  
unless it is a repetitive dive in a series.  
• When Wet Activation is set On, the selected dive mode will activate upon descent regardless of what mode it is operating in at the time.  
Post Dive:  
Operation will revert from Dive Mode to Post Dive Surface Mode upon ascent to 2 FT (0.6 M) for 1 second.  
During the Transision Period, which is the first 10 minutes on the surface after a NORM or GAUG dive, or after the BDSI (Between Dive Surface Interval)  
time set after a FREE or TECH FREE dive >>  
• The Surface Main will be displayed with Surface Interval time and access to Surface ALT screens.  
• A descent during the Transition Period is a continuation of that dive.  
After the 10 minute (or BDSI) interval on the surface has elapsed >>  
• The Surface Main will be displayed with access given to other surface displays.  
• A descent is then considered a new dive.  
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------  
NORM SURFACE FUNCTIONS  
S
Compass  
2 sec  
NORM  
SURF.MAIN  
WATCH  
Main.Time  
M
2 sec  
A
Surface.ALTs  
Light  
< 2 sec  
L
M
< 2 sec  
M or S  
2 sec  
MAIN  
MENU  
FLY/DESAT  
PLAN  
A
< 2 sec  
LOG  
S 2 sec while viewing  
the Menu to revert to  
SURF Main.  
SET.GAS  
SET.ALARMS  
SET.UTILITIES  
OP.MODE  
HISTORY  
OCi.ID  
M
< 2 sec  
(sample selection)  
SEL  
DIvE.MODE  
GAUG  
SURF.MAIN  
S
< 2 sec  
S
S
>
NORM  
< 2 sec  
GAUG  
FREE  
>
2 sec  
TECH.FREE  
bATT/TMT  
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OCi OPERATING MANUAL  
NORM SURF MAIN, information includes (Fig. 17A/B):  
> Surface Interval Time (hr:min) with SURF icon; if no dive yet, this is time since access to NORM.  
> Graphic Z+ or DSAT, the Algorithm selected.  
> Graphic NORM.  
> Graphic GAS-1* and the FO2 set for that gas with FO2 icon.  
> Graphic DIVE and number of the dive just completed during that operating period, up to 24 (0 if no dive made yet).  
> Nx icon, if any Gas is set for Nitrox.  
> Pressure* with PSI (or BAR) and Link icons.  
> TLBG with icon, if any after a NORM or FREE dive.  
> Battery icon, if voltage is low.  
Fig. 17A - NORM SURF MAIN  
(no dive yet)  
*Gas #1 and Tank #1 Pressure are the defaults before dives & 10 minutes after surfacing.  
During the first 10 minutes after surfacing, the Gas and Pressure represent the Gas & Tank in use.  
• A (< 2 sec) - to access ALT 1.  
• M (< 2 sec) - to access NORM Menu, except during 10 minutes after surfacing from dives.  
• M (2 sec) - to access Watch Main.  
• S (2 sec) - to access Compass Mode.  
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.  
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.  
Fig. 17B - NORM SURF MAIN  
(4 minutes after dive 1)  
NORM SURF ALT 1 (Last), information includes (Fig. 18):  
> Graphic LAST DIVE, indicating that data is from the dive previously conducted while in NORM mode.  
> Max Depth with FT (or M) and MAX icons, 2 dashes ( - - ) if no previous dive.  
> Elapsed Dive Time (hr:min) with graphic EDT, 3 dashes ( - : - - ) if no previous dive.  
• A (< 2 sec) - to access ALT 2.  
• 10 sec - revert to Main, if A is not pressed.  
• L - to activate Backlight.  
Fig. 18 - NORM SURF ALT 1  
(Last dive's data)  
NORM SURF ALT 2, information includes (Fig. 19):  
> Time of Day (hr:min_sec) with A (or P).  
> Altitude graphic, if EL2 (to EL7), blank if Sea level.  
> Temperature with ° icon and graphic F (or C).  
• A (< 2 sec) - to access ALT 3 (if set for Nitrox), or revert to Main (if set for Air).  
• 10 sec - revert to Main, if A is not pressed.  
• L - to operate the Backlight.  
NORM SURF ALT 3, information includes (Fig. 20):  
> Current % O2 SAT (saturation) with graphic.  
> Graphic GAS-1 with FO2 setting and icon.  
> Nx icon.  
Fig. 19 - NORM SURF ALT 2  
> O2BG with O2 icon, if any after a dive.  
• 10 sec or A (< 2 sec) - to revert to Main.  
• L - to operate the Backlight.  
---------------------------------------------------------------------------------------------------------------------------------------------------------------  
Fig. 20 - NORM SURF ALT 3  
NORM MAIN MENU (Fig. 21)  
NORM  
MAIN.MENU  
Button operations:  
• M (< 2 sec) - to access the Menu, while viewing the Surface Main.  
• A (< 2 sec) - to step down (forward) through selections.  
• M (< 2 sec) - to step up (backward) through selections.  
• S (< 2 sec) - to access a selection indicated by the pointer icon ( > ).  
• S (2 sec), while viewing the menu - to revert to Surface Main.  
• M (2 sec) any time - to revert to Surface Main.  
• 2 min (no button action) - will revert to Surface Main.  
FLY/DESAT  
PLAN  
LOG  
SET.GAS  
SET.ALARMS  
SET.UTILITIES  
OP.MODE  
HISTORY  
OCi.ID  
>
Fig. 21 - NORM MAIN MENU  
(sample screen, 1st 3 items)  
bATT/TMT  
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OCi OPERATING MANUAL  
FLY/DESAT TIME - NORM & GAUG MODES  
Fly Time is a count down timer that begins counting down 10 minutes after surfacing from a dive from 23:50 to 0:00 (hr:min).  
Desat Time (Desaturation of Nitrogen), also a countdown timer, provides calculated time for tissue desaturation at sea level taking  
into consideration the Conservation Factor setting.  
Desat Time also begins counting down 10 minutes after surfacing from a NORM dive, counting down from 23:50 (max) to  
0:00 (hr:min).  
When the Desat countdown reaches 0:00, which will generally occur prior to the Fly count down reaching 0:00, it will remain  
on the display as 0:00 until the Fly count down reaches 0:00.  
> Desat is not displayed after a Gauge or Violation dive.  
> Desaturation requiring Times greater than 24 hours will display 23: - - .  
> In the event that Time to Desaturate still remains at the end of 24 hours, the added time will be zeroed.  
> When other screens are accessed, the Fly and Desat countdowns continue in the background.  
FLY/DESAT, information includes (Fig. 22):  
> Time to Fly (hr:min), 0:00 if no dive yet, dashes ( - : - - ) during first 10 min on surface, with graphic FLY.  
> Time to Desat (hr:min), 0:00 if no dive yet, dashes ( - : - - ) during first 10 min on surface, with graphic DESAT.  
• S (< 2 sec) - to revert to the Main Menu.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.  
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.  
Fig. 22 - FLY/DESAT  
(10 min after dive)  
PLAN - NORM MODE  
No Deco Dive Times (NDLs) in NORM Plan Mode are based on the Algorithm selected (DSAT or Z+) and only on the FO2 set for  
Gas 1. FO2 settings for Gas 2, 3, and 4 are not used for planning.  
Surface Main >> Main Menu >> Plan Lead-in >> PDPS.  
Plan Lead-in, information includes (Fig. 23A/B):  
> Graphic PLAN.  
> Graphic DSAT (or Z+), algorithm selected.  
> Graphic Gas 1, default gas used for planning.  
> Graphic AIR, or numeric value (21 to 100%) of FO2 set for Gas 1.  
> PO2 Alarm value set for Gas 1 (1.00 to 1.60) if Nitrox, blank if Air.  
> Nx icon, if Nitrox.  
Fig. 23A - PLAN LEAD-IN  
(Gas 1 set for Air)  
• S (< 2 sec) - to access the first screen of the PDPS.  
• S (2 sec) - to step back to the Main Menu.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.  
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.  
PDPS (Pre Dive Planning Sequence)  
The PDPS displays Depths and allowable No Deco Dive Times. It will sequence through Depths from 30 to 190 FT (9 to 57 M),  
or the Max Depth that will allow theoretical No Deco Dive Time of at least 1 minute based upon the previous dive profiles in a  
series of repetitive dives and taking into account descent and ascent rates of 60 FPM (18 MPM).  
Fig. 23B - PLAN LEAD-IN  
(Gas 1 set for Nitrox)  
When the Conservative Factor is set On, No Deco Dive times are reduced to the values of the next 3000 foot (915 meter) higher  
Altitude. Refer to tables in back.  
PDPS, information includes (Fig. 24A/B):  
> Max Depth, allowed for the PO2 alarm value set, with MAX and FT (or M) icons, blank if FO2 is set for Air.  
> Plan Depth value with graphic FT (or M).  
> Dive Time allowed (hr:min) with graphic NDC (or OTR), no OTR if Air.  
> Graphic AIR, or numeric value (21 to 100%) of FO2 set for Gas 1.  
> PO2 Alarm value set for Gas 1 (1.00 to 1.60) if Nitrox, blank if Air.  
> Nx icon, if Nitrox.  
Fig. 24A - PDPS  
(nitrogen control)  
• A (hold) - to scroll upward through Depth screens 8/sec from 30 to 190 FT (9 to 57 M) in increments of 10 FT (3 M).  
• A (< 2 sec) - to step upward through screens one at a time.  
• M (< 2 sec) - to step back through screens one at a time.  
• S (< 2 sec) - to exit the PDPS and revert to the Plan Lead-in screen.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.  
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.  
Fig. 24B - PDPS  
(oxygen control)  
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SCUBA LOG - NORM & GAUG MODES  
Information from the latest 24 NORM and/or GAUG dives is stored for viewing. After exceeding 24 dives, the most recent dive  
is stored while the oldest is deleted.  
> Dives are numbered from 1 to 24 starting each time NORM (or GAUG) Dive Mode is activated. After the post dive 24 hour  
period has elapsed, the first dive of the next operation period is #1.  
> 10 minutes after surfacing from dives, the Log screens for that dive as well as all other dives stored can be viewed.  
> In the event that a dive’s elapsed time (EDT) exceeds 9:59 (hr:min), the data at the 9:59 interval is recorded in the Log upon  
surfacing of the unit.  
Surface Main >> Main Menu >> Log Data 1 >> Log Data 2 >> Log Data 3 >> Log Data 4.  
LOG DATA 1 (identifier), information includes (Fig. 25A/B):  
> Graphic LOG. The graphics NO DIVES YET are displayed until the first dive is recorded  
> Graphic NO-D (or DECO or GAUG or VIOL).  
> Graphic DIVE - with dive number (1 to 24, 0 if no dive recorded yet).  
> Time of Day* the dive began (hr:min) with A (or P).  
> Day of the week the dive was conducted (MON, etc.).  
> Date* the dive was conducted (Month.Day or Day.Month)  
*The Watch Date/Time will need to be changed to match the local Date/Time where you are diving.  
The Date/Time that appears in Log entries does not change based on Dual Time displayed in Watch mode.  
Fig. 25A - LOG DATA 1  
• A (hold) - to scroll through Data 1 screens 8/sec, from the most recent to oldest recorded.  
• A (< 2 sec) - to step through screens one at a time, from the most recent to oldest recorded.  
• M (< 2 sec) - to step back through screens one at a time.  
• S (< 2 sec) - to access that dive's Log Data 2 screen.  
• S (2 sec) - to step back to the Main Menu.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.  
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.  
Fig. 25B - LOG DATA 1  
Fig. 26 - LOG DATA 2  
Fig. 27 - LOG DATA 3  
LOG DATA 2, information includes (Fig. 26):  
> Pre dive Surface Interval (hr:min) with SURF icon, 0:00 if Dive # 1.  
> Max Depth with graphic FT (or M) MAX.  
> Elapsed Dive Time (hr:min) with graphic EDT.  
> Graphic SEA (or EL2 to EL7), altitude at which the dive was conducted.  
> Temperature with ° icon and graphic F (or C), minimum recorded during that dive.  
> TLBG with the max segment flashing, others fixed up to end of dive accumulation. All segments flashing if a Violation.  
Blank if GAUG.  
> VARI, max Ascent Rate sustained for 4 seconds during the dive.  
> Nx icon, if any gas was set for Nitrox.  
• S (< 2 sec) - to access that dive's Log Data 3 screen, or bypass to Data 4 if no TMT used.  
• S (2 sec) - to step back to that dive's Log Data 1 screen.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.  
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.  
LOG DATA 3 (TMT 1 only, bypassed if no TMT used), information includes (Fig. 27):  
> Graphic TMT1.  
> Start Pressure with graphics PSI (or BAR) and START.  
> End Pressure with graphics PSI (or BAR) and END.  
• S (< 2 sec) - to access that dive's Log Data 3 screen.  
• S (2 sec) - to step back to that dive's Log Data 2 screen.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.  
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.  
LOG DATA 4 (Nitrox only), information includes (Fig. 28):  
> % of O2 Saturation when the dive ended with graphics..  
> Graphic GAS 1 (or 2, 3, 4), the gas in use when the dive ended.  
> FO2 set for the gas in use when the dive ended.  
> Maximum PO2 achieved during the dive with icon.  
> Nx icon.  
Fig. 28 - LOG DATA 4  
• S (< 2 sec) - to access that dive's Log Data 1 screen.  
• S (2 sec) - to step back to that dive's Log Data 3 screen.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.  
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.  
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OCi OPERATING MANUAL  
SET GAS - NORM MODE  
Each Gas has an individual FO2 setting, and when Nitrox, an associated PO2 Alarm setting.  
Default settings are FO2 Air with no PO2 alarm value for Gas 1, and Off for Gas 2, 3, & 4. Settings revert to the defaults when  
24 hours elapse without conducting a dive.  
When FO2 is set for Air -  
> calculations are the same as when FO2 is set for 21%.  
> it remains set for Air until set for Nitrox (21 to 100%).  
> O2 data (such as PO2, O2%) will not be displayed at any time during the dive, on the surface, or in Plan mode.  
> MODs (Max Operating Depths) will not be displayed on the FO2 set screen.  
> internally, it will keep track of O2 data for use if FO2 is subsequently set for Nitrox for repetitive dives.  
When FO2 is set for Nitrox -  
> Once any Gas is set for Nitrox, any other Gas set for Air will automatically be set to 21%.  
> The Air option will not be displayed as an FO2 setting until 24 hours elapse after the last dive.  
> The default PO2 alarm for each gas will be 1.40 until it is changed.  
When FO2 is set for OFF (Gas 2, 3, 4) -  
> That Gas will not be available in the Gas Switch routine during dives (no Switch To - screen).  
FO2 50% Default -  
> When the 50% Default is set OFF, FO2 values will remain set at their last settings saved until 24 hours elapse without  
conducting a dive.  
> When the Default is set ON and FO2 is set for Nitrox, 10 minutes on the surface after that dive the FO2 will be displayed  
as 50 and further dives will be calculated based on 50% O2 for oxygen calculations and 21% O2 for Nitrogen calculations  
(79% Nitrogen), unless FO2 is set before the dive. FO2 will continue to reset to the Default after repetitive dives until 24  
hours elapse with no dive, or the Default is set OFF.  
SET GAS MENU  
Menu selections include (Fig. 29) >> GAS 1 >> GAS 2 >> GAS 3 >> GAS 4 >> DFLT (FO2 50% Default).  
• S (< 2 sec) - to access the Menu while the pointer icon ( > ) is next to SET GAS on the NORM Main Menu.  
• A (< 2 sec) - to step down (forward) through selections.  
• M (< 2 sec) - to step up (back) through selections.  
• S (< 2 sec) - to access the selection indicated by the pointer icon ( > ).  
The last setting saved, or the default setting, is displayed next to each Menu item. Due to space limitations, PO2 settings are  
viewed by accessing individual gas Set screens.  
Fig. 29B - SET GAS MENU  
SET GAS 1 FO2/PO2, information includes (Fig. 30A/B):  
> Max Depth allowed for the PO2 alarm setting displayed with FT (or M) MAX icons, blank when Air.  
> Graphic GAS 1.  
> Graphics ON (flashing upon access) and SET. This feature does not have an OFF selection.  
> Graphic AIR, or 21 to 100, flashing, with icon.  
> PO2 Alarm setting with icon, blank if Air.  
> Nx icon, blank if Air.  
• A or M (< 2 sec) - to toggle between ON and SET.  
• S (< 2 sec) - save the selection.  
Fig. 30A - SET GAS 1  
(upon access)  
>> If ON is selected, operation reverts to the Gas Menu.  
>> If SET is selected, the FO2 digits will flash.  
• A (press/hold), while the FO2 digits are flashing - to scroll upward through the set points from Air to 21 through 100 in 1%  
increments, 8/sec.  
The scroll will stop when the button is released, or momentarily at 32, then 50, then 80 (%).  
• A (< 2 sec) - to step upward through FO2 set points one at a time.  
• M (< 2 sec) - to step back through FO2 set points one at a time.  
• S (2 sec) - to revert to the Set Gas Menu without changing settings.  
• S (< 2 sec) - save the FO2 setting and flash the PO2 digits, or revert to the Set Gas Menu if Air.  
Fig. 30B - SET GAS 1  
(to set FO2 then PO2 alarm)  
• A (< 2 sec) - to step upward through PO2 Alarm set points from 1.00 to 1.60 (ATA) in .05 increments.  
• M (< 2 sec) - to step back through PO2 set points.  
• S (2 sec) - to revert to Set Gas Menu without changing the PO2 alarm setting.  
• S (< 2 sec) - to save the PO2 setting and revert to the Set Gas Menu.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
SET GAS 2 (3, 4) FO2/PO2, information includes (Fig. 31):  
> Gas 2, 3, and 4 set screens and operations are similar to those for Gas 1 with the addition of an OFF selection that removes  
that Gas from gas switching options during dives.  
Fig. 31 - SET GAS 2  
(Gas 3, 4 similar)  
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SET FO2 50% DEFAULT, information includes (Fig. 32):  
> Graphics FO2 50% DFLT.  
> Graphic OFF and ON, last one saved flashing.  
• S (2 sec) - to revert to the Set Gas Menu without changing the setting.  
• A or M (< 2 sec) - to toggle between OFF and ON.  
• S (< 2 sec) - to save the setting and revert to the Set Gas Menu.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
Fig. 32 - SET FO2 50%  
DEFAULT  
SET ALARMS MENU - NORM & GAUG MODES (Fig. 33)  
Menu selections include >> Audible >> Depth >> EDT >> TLBG* >> DTR >> Turn >> End.  
*NORM Mode only.  
Due to space limitations, settings are viewed by accessing individual alarm Set screens.  
• S (< 2 sec) - to access the Menu while the pointer icon ( > ) is next to SET ALARMS on the NORM or GAUG Main Menu.  
• A (< 2 sec) - to step down (forward) through selections.  
• M (< 2 sec) - to step up (back) through selections.  
• S (< 2 sec) - to access the selection indicated by the pointer icon ( > ).  
SET AUDIBLE ALARM, information includes (Fig. 34):  
> Graphics AUD ALARM.  
> Graphics OFF and ON, last one saved flashing.  
• S (2 sec) - to revert to the Set Alarms Menu without changing the setting.  
• A or M (< 2 sec) - to toggle between OFF and ON.  
• S (< 2 sec) - to save the setting and revert to the Set Alarms Menu.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
SET DEPTH ALARM, information includes (Fig. 35):  
> Graphics DEPTH ALARM.  
> Graphics OFF, ON, and SET; last saved (OFF or ON) flashing upon access.  
> Depth value with FT (or M) and MAX icons.  
Fig. 33 - SET ALARMS MENU  
• S (2 sec) - to revert to the Set Alarms Menu without changing the setting.  
• A (< 2 sec) - to step forward (down screen) through the selections OFF, ON, SET.  
• M (< 2 sec) - to step back (up screen) through the selections.  
• S (< 2 sec) - save the selection.  
>> If OFF or ON is selected, operation reverts to the Alarms Menu.  
>> If SET is selected, the Depth digits will flash.  
• A (hold) - to scroll through set points 8/sec from 30 to 330 FT (10 to 100 M) in increments of 10 FT (1 M).  
• A (< 2 sec) - to step upward through set points one at a time.  
• M (< 2 sec) - to step back through set points one at a time.  
• S (< 2 sec) - to save the setting with the Depth digits solid and SET flashing allowing ON or OFF to be selected.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
Fig. 34 - SET AUDIBLE AL  
Fig. 35 - SET DEPTH AL  
Fig. 36 - SET EDT AL  
There is a separate alarm associated with exceeding the MOD (max operating depth) which is a violation described later.  
FREE modes have separate Depth Alarms, also descibed later, that are not affected by this setting.  
SET EDT (ELAPSED DIVE TIME) ALARM, information includes (Fig. 36):  
> Graphics EDT ALARM.  
> Graphics OFF, ON, and SET; last saved (OFF or ON) flashing upon access.  
> EDT value (hr:min), last set.  
• S (2 sec) - to revert to the Set Alarms Menu without changing the setting.  
• A (< 2 sec) - to step forward (down screen) through the selections OFF, ON, SET.  
• M (< 2 sec) - to step back (up screen) through the selections.  
• S (< 2 sec) - save the selection.  
>> If OFF or ON is selected, operation reverts to the Alarms Menu.  
>> If SET is selected, the Time digits will flash.  
• A (hold) - to scroll through set points 8/sec from 0:10 to 3:00 (hr:min) in increments of 0:05 (:min).  
• A (< 2 sec) - to step upward through set points one at a time.  
• M (< 2 sec) - to step back through set points one at a time.  
• S (< 2 sec) - to save the setting with the Time digits solid and SET flashing allowing ON or OFF to be selected.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
FREE Modes have separate EDT Alarms.  
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SET TLBG (TISSUE LOADING BAR GRAPH) ALARM, information includes (Fig. 37):  
> Graphics TLBG ALARM.  
> Graphics OFF, ON, and SET; last saved (OFF or ON) flashing upon access.  
> TLBG segments (last number set) with icon.  
• S (2 sec) - to revert to the Set Alarms Menu without changing the setting.  
• A (< 2 sec) - to step forward (down screen) through the selections OFF, ON, SET.  
• M (< 2 sec) - to step back (up screen) through the selections.  
• S (< 2 sec) - save the selection.  
Fig. 37 - SET TLBG AL  
>> If OFF or ON is selected, operation reverts to the Alarms Menu.  
>> If SET is selected, the TLBG segments will flash.  
• A (< 2 sec) - to step upward through set points from 1 to 4 segments one at a time.  
• M (< 2 sec) - to step back through set points one at a time.  
• S (< 2 sec) - to save the setting with the TLBG segments solid and SET flashing allowing ON or OFF to be selected.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
FREE Mode has a separate TLBG Alarm.  
SET DTR (DIVE TIME REMAINING) ALARM, information includes (Fig. 38):  
> Graphics DTR ALARM.  
> Graphics OFF, ON, and SET; last saved (OFF or ON) flashing upon access.  
> DTR value (hr:min), last set.  
• S (2 sec) - to revert to the Set Alarms Menu without changing the setting.  
• A (< 2 sec) - to step forward (down screen) through the selections OFF, ON, SET.  
• M (< 2 sec) - to step back (up screen) through the selections.  
• S (< 2 sec) - save the selection.  
Fig. 38 - SET DTR AL  
>> If OFF or ON is selected, operation reverts to the Alarms Menu.  
>> If SET is selected, the Time digits will flash.  
• A (hold) - to scroll through set points 8/sec from 0:05 to 0:20 (hr:min) in increments of 0:01 (:min).  
• A (< 2 sec) - to step upward through set points one at a time.  
• M (< 2 sec) - to step back through set points one at a time.  
• S (< 2 sec) - to save the setting with the Time digits solid and SET flashing allowing ON or OFF to be selected.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
SET TURN (TMT 1 PRESSURE) ALARM, information includes (Fig. 39):  
> Graphics TURN ALARM.  
> Graphics OFF, ON, and SET; last saved (OFF or ON) flashing upon access.  
> Pressure value with PSI (or BAR) icon, last set.  
• S (2 sec) - to revert to the Set Alarms Menu without changing the setting.  
• A (< 2 sec) - to step forward (down screen) through the selections OFF, ON, SET.  
• M (< 2 sec) - to step back (up screen) through the selections.  
• S (< 2 sec) - save the selection.  
Fig. 39 - SET TURN AL  
(TMT 1 only)  
>> If OFF or ON is selected, operation reverts to the Alarms Menu.  
>> If SET is selected, the Pressure digits will flash.  
• A (hold) - to scroll through set points 8/sec from 300 to 1500 PSI (20 to 105 BAR) in increments of 100 PSI (5 BAR).  
• A (< 2 sec) - to step upward through set points one at a time.  
• M (< 2 sec) - to step back through set points one at a time.  
• S (< 2 sec) - to save the setting with the Pressure digits solid and SET flashing allowing ON or OFF to be selected.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
SET END (TMT IN USE PRESSURE - 1, 2, 3, or 4) ALARM, information includes (Fig. 40):  
> Graphics TURN ALARM.  
> Graphics ON and SET; with ON flashing upon access. This feature does not have an OFF selection.  
> Pressure value with PSI (or BAR) icon, last set.  
• S (2 sec) - to revert to the Set Alarms Menu without changing the setting.  
• A or M (< 2 sec) - to toggle between ON and SET.  
• S (< 2 sec) - save the selection.  
Fig. 40 - SET END AL  
(TMT in use)  
>> If ON is selected, operation reverts to the Alarms Menu.  
>> If SET is selected, the Pressure digits will flash.  
• A (hold) - to scroll through set points 8/sec from 1000 to 3000 PSI (70 to 205 BAR) in increments of 250 PSI (5 BAR).  
• A (< 2 sec) - to step upward through set points one at a time.  
• M (< 2 sec) - to step back through set points one at a time.  
• S (< 2 sec) - to save the setting with the Pressure digits solid and SET flashing allowing ON to be selected.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
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OCi OPERATING MANUAL  
SET UTILITIES MENU - NORM & GAUG MODES (Fig. 41)  
Menu selections include >> Water Type >> Wet Activation >> Deep Stop* >> Safety Stop* >> Algorithm* >> Conservative  
Factor* >> Glo (Backlight) Duration >> Sampling Rate >> TMT Menu.  
*NORM Mode only.  
Selections for Water Type, Wet Activation, Units, and Glo Duration can also be set while in the FREE Dive Modes.  
Due to space limitations, settings are viewed by accessing individual Set screens.  
• S (< 2 sec) - to access the Menu while the pointer icon ( > ) is next to SET UTILITIES on the Main Menu.  
• A (< 2 sec) - to step down (forward) through selections.  
• M (< 2 sec) - to step up (back) through selections.  
• S (< 2 sec) - to access the selection indicated by the pointer icon ( > ).  
SET WATER TYPE, information includes (Fig. 42):  
> Graphics WATER TYPE.  
> Graphics SEA and FRSH (Fresh), last one saved flashing.  
• S (2 sec) - to revert to the Set Utilities Menu without changing the setting.  
• A or M (< 2 sec) - to toggle between SEA and FRSH.  
• S (< 2 sec) - to save the setting and revert to the Set Utilities Menu.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
SET WET ACTIVATION, information includes (Fig. 43):  
> Graphics WET ACTIV.  
> Graphics OFF and ON, last one saved flashing.  
Fig. 41 - SET UTILITIES MENU  
• S (2 sec) - to revert to the Set Utilities Menu without changing the setting.  
• A or M (< 2 sec) - to toggle between OFF and ON.  
• S (< 2 sec) - to save the setting and revert to the Set Utilities Menu.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
SET UNITS, information includes (Fig. 44):  
> Graphic UNITS.  
> Graphics IMP (Imperial) and MET (Metric), last one saved flashing.  
• S (2 sec) - to revert to the Set Utilities Menu without changing the setting.  
• A or M (< 2 sec) - to toggle between IMP and MET.  
Fig. 42 - SET WATER TYPE  
• S (< 2 sec) - to save the setting and revert to the Set Utilities Menu.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
SET DEEP STOP (No Deco only), information includes (Fig. 45):  
> Graphics DEEP STOP.  
> Graphics OFF and ON, last one saved flashing.  
• S (2 sec) - to revert to the Set Utilities Menu without changing the setting.  
• A or M (< 2 sec) - to toggle between OFF and ON.  
Fig. 43 - SET WET ACTIV  
• S (< 2 sec) - to save the setting and revert to the Set Utilities Menu.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
Deep Stop applies only to NORM No Deco dives.  
Fig. 44 - SET UNITS  
< < < < Set Utilties - continued on next page. > > > >  
Fig. 45 - SET DEEP STOP  
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OCi OPERATING MANUAL  
SET SAFETY STOP (No Deco only), information includes (Fig. 46A/B):  
> Graphics SAFE STOP.  
> Graphics OFF, TMR (Timer), ON; last saved flashing upon access.  
> Stop Depth & Time (min) with icons, last values set.  
• S (2 sec) - to revert to the Set Utilities Menu without changing the setting.  
• A (< 2 sec) - to step forward (down screen) through the selections OFF, TMR, ON, SET.  
• M (< 2 sec) - to step back (up screen) through the selections.  
• S (< 2 sec) - save the selection.  
Fig. 46A - SET SAFETY STOP  
>> If OFF, TMR* or ON is selected, operation reverts to the Utilities Menu.  
>> If SET is selected, the Time digits will flash.  
*Choosing TMR (Timer) allows you to determine at which depth you will perform the safety stop while a run timer counts the  
time spent at the stop. The Depth and Time displayed on the set screen only applies when ON is selected.  
• A or M (< 2 sec) - to toggle Stop Time between 3 and 5 (minutes).  
• S (< 2 sec) - to save the Time setting and flash the Depth digits.  
• A (< 2 sec) - to step forward through Depth set points of 10, 15, 20 FT (or 3, 4, 5, 6 M).  
• M (< 2 sec) - to step back through Depth set points one at a time.  
• S (< 2 sec) - to save the Time/Depth setting (digits solid) and flash SET allowing ON, OFF, or TMR to be selected/saved.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
Fig. 46B - SET SAFETY STOP  
(set Time then Depth)  
SET ALGORITHM, information includes (Fig. 47):  
> Graphic ALGO (Algorithm).  
> Graphics DSAT and Z+, last one saved flashing.  
• S (2 sec) - to revert to the Set Utilities Menu without changing the setting.  
• A or M (< 2 sec) - to toggle between DSAT and Z+.  
• S (< 2 sec) - to save the setting and revert to the Set Utilities Menu.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
>> This feature allows selection of the algorithm used for nitrogen and oxygen calculations.  
Fig. 47 - SET ALGORITHM  
>> Z+ is more conservative allowing shorter No Deco times at specific depths. Refer to page 31.  
>> Changing the algorihm is blocked during 24 hours after NORM and FREE dives unless Desat time decreases to 0:00.  
SET CONSERVATIVE FACTOR, information includes (Fig. 48):  
> Graphic CONS FACTOR (Conservative Factor).  
> Graphics OFF and ON, last one saved flashing.  
• S (2 sec) - to revert to the Set Utilities Menu without changing the setting.  
• A or M (< 2 sec) - to toggle between OFF and ON.  
• S (< 2 sec) - to save the setting and revert to the Set Utilities Menu.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
Fig. 48 - SET CONSERVA-  
TIVE FACTOR  
When set On, NDLs are reduced to those of the next higher 3000 foot (915 meter) Altitude. Refer to the charts in the back.  
SET BACKLIGHT DURATION, information includes (Fig. 49):  
> Graphics GLO DURA (Glo = Backlight, Duration).  
> Graphics OFF, ON, and SET; last saved (OFF or ON) flashing upon access.  
> Time (5, 10, 30, 60), last value saved flashing with graphic SEC (seconds).  
• S (2 sec) - to revert to the Set Utilities Menu without changing the setting.  
• A (< 2 sec) - to step forward (down screen) through the selections OFF, ON, SET.  
• M (< 2 sec) - to step back (up screen) through the selections.  
• S (< 2 sec) - save the selection.  
Fig. 49 - SET BACKLIGHT  
DURATION  
>> If OFF or ON is selected, operation reverts to the Utilities Menu.  
>> If SET is selected, the Time digits will flash.  
• A (< 2 sec) - to step upward through set points 5, 10, 30, and 60 (seconds), one at a time.  
• M (< 2 sec) - to step back through set points one at a time.  
• S (< 2 sec) - to save the setting with the Time digits solid and SET flashing allowing ON or OFF to be selected.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
Backlight Duration is the additional time the Backlight will remain On after the L button is released.  
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OCi OPERATING MANUAL  
SET SAMPLING RATE, information includes (Fig. 50):  
> Graphics PC SAMPLE RATE.  
> Graphics ON and SET; with ON flashing upon access.  
> Time (2, 15, 30, 60), last value saved with graphic SEC (seconds).  
• S (2 sec) - to revert to the Set Utilities Menu without changing the setting.  
• A or M (< 2 sec) - to toggle between ON and SET.  
• S (< 2 sec) - save the selection.  
Fig. 50 - SET SAMPLE RATE  
>> If ON is selected, operation reverts to the Utilities Menu.  
>> If SET is selected, the Time digits will flash.  
• A (< 2 sec) - to step upward through set points 2, 15, 30, and 60 (seconds), one at a time.  
• M (< 2 sec) - to step back through set points one at a time.  
• S (< 2 sec) - to save the setting with the Time digits solid and SET flashing allowing ON to be selected.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
PC Sampling Rate is the interval that data is sampled and stored for download to the associated PC Interface program.  
Refer to page 9. FREE modes have separate sampling intervals unaffected by this setting.  
TMT (TRANSMITTER) MENU, information includes (Fig. 51):  
> Graphic Goto.  
> Graphics SET TMT 1, SET TMT 2, SET TMT 3, and SET TMT 4.  
• S (2 sec) - to revert to the Set Utilities Menu without changing the setting.  
• A (< 2 sec) - to step forward (down) through the TMT selections.  
• M (< 2 sec) - to step back (up) through the selections.  
• S (< 2 sec) - to access the Set screen for the TMT indicated.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
Fig. 51 - TMT MENU  
SET TMT 1 (2, 3, 4), information includes (Fig. 52):  
> Graphics TMT1 LINK CODE.  
> Graphics OFF, ON, and SET; last saved (OFF or ON) flashing upon access.  
> Graphic SN with up to 6 digits, Link Code (which is the TMT's serial number).  
• S (2 sec) - to revert to the TMT Menu.  
• A (< 2 sec) - to step down through the selections (OFF, ON, SET).  
• M (< 2 sec) - to step upward through the selections.  
• S (< 2 sec) - to save the selection.  
>> If TMT 1 is set OFF, the OCi’s receiver will be disabled, and operation will revert to the TMT Menu.  
>> If ON is selected, operation will revert to the TMT Menu.  
>> If SET is selected, the 1st (left) digit of the SN will flash -  
Fig. 52 - SET TMT SN  
(Link Code)  
• A (< 2 sec) - to step upward through the 1st digit’s values one at a time.  
• M (< 2 sec) - to step down through the 1st digit’s values one at a time.  
• S (< 2 sec) - to save the 1st digit’s value and flash the 2nd digit.  
• Repeat A, M, S action until all digits are set (to match that Transmitter's serial number) with operation then reverting to the  
TMT Set Menu with SET flashing allowing OFF or ON to be selected/saved.  
When setting TMT 2 (3, 4) -  
If TMT 1 is set OFF and an attempt is made to set another TMT (2, 3, or 4) ON, the graphic message TMT 1 (or 2, 3) MUST  
BE SET ON FIRST (Fig. 53) will be displayed for 5 seconds, then operation will revert to the TMT Menu.  
Fig. 53 - SET TMT MESSAGE  
(trying to turn TMT 2 ON when  
TMT 1 is OFF)  
The TMT’s SN can still be set, however, ON will be blocked until the TMT before it is turned ON. This allows preset of TMTs  
(entering their SNs) that will be used at some future time.  
______________________________________________________________________________  
SELECT OP (OPERATING) MODE, information includes (Fig. 54):  
> Graphics SEL (Select) MODE.  
> Graphics NORM, GAUG, FREE, and TECH FREE; pointer icon ( > ) next to the mode currently active flashing.  
• S (2 sec) - to revert to the Main Menu without changing the selection.  
• A (< 2 sec) - to step forward (down screen) through the selections.  
• M (< 2 sec) - to step back (up screen) through the selections.  
• S (< 2 sec) - to save the flashing selection and revert to that mode's Surface Main screen.  
• M (2 sec), or 2 min of no button action, - to revert to the currently active Surface Main without changing modes.  
Fig. 54 - SELECT OP MODE  
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OCi OPERATING MANUAL  
SCUBA HISTORY - NORM & GAUG  
History displys data such as totals, minimums, and maximums that have been recorded for all NORM and GAUG type SCUBA  
dives conducted since the OCi was first placed in service.  
HISTORY DATA 1, information includes (Fig. 55):  
> Graphic HISTORY*.  
> Total number of dives recorded (up to 9999) with graphic DIVES.  
> Total hours of elapsed dive time (up to 9999), 0 if < 1 hour, with graphic HOURS.  
Fig. 55 - HISTORY 1  
*The graphics NO DIVES YET are displayed until the first dive is recorded.  
• S (< 2 sec) - to access History Data 2.  
• S (2 sec) - to revert to the Main Menu.  
HISTORY DATA 2 (no screen if no dives ever recorded), information includes (Fig. 56):  
> Max Depth achieved with FT (or M) MAX icons, 3 dashes if a Delayed Violation 3 (described later) was ever recorded.  
> Graphic HISTORY.  
> Graphics HIGH and SEA (or EL2 to EL7), the highest Altitude at which a dive was conducted.  
> Graphic LOW and Temperature with ° icon and graphic F (or C), the lowest ever recorded during any dive.  
• S (< 2 sec) - to step back to History Data 1.  
Fig. 56 - HISTORY 2  
Fig. 57 - SERIAL NUMBER  
Fig. 58 - CLEAR (reset)  
OCi ID (SERIAL NUMBER), information includes (Fig. 57):  
> Graphic SN (= Serial Number).  
> Serial Number of the OCi (factory programmed up to 6 digits).  
> Graphic REV with the firmware (operating software) and display revision numbers (such as 1A01).  
• S (< 2 sec) - to access Clear (if NORM mode), or revert to the Main Menu (if GAUG or FREE Modes).  
CLEAR (NORM), informations includes (Fig. 58):  
The Clear feature gives you the ability to reset the unit, clearing all nitrogen and oxygen calculations.  
The valid ID code (20 02) assigned by the factory must be entered correctly to initiate the reset function.  
> 4 digit number (xx - yy, some random assignment by factory, not 2002 the correct reset code).  
> Graphics CLEAR NI - O2.  
• S (2 sec) - to revert to the SN screen, if you want to exit the routine without Reseting the unit.  
Reset procedure:  
• S (< 2 sec) - to start the first 2 digits (xx) flashing.  
• A (hold) - to scroll upward through the first digits (xx) 4 per sec.  
• A (< 2 sec) - to step upward through the digits (xx) one at a time.  
• M (< 2 sec) - to step back through the digits (xx) one at a time.  
• S (< 2 sec) - to save the first 2 digits (xx) and flash the second 2 digits (yy).  
• A (hold) - to scroll upward through the second digits (yy) 4 per sec.  
• A (< 2 sec) - to step upward through the digits (yy) one at a time.  
• M (< 2 sec) - to step back through the digits (yy) one at a time.  
• S (< 2 sec) - to save the Reset Code, clear the unit of all nitrogen/oxygen calculations with data being erased, and revert  
operation to Watch Main screen.  
• S (2 sec) - to revert to the SN screen, if the Reset Code is not entered correctly and you want to try again, or the you want to  
exit the routine and not Reset the unit.  
Fig. 59 - OCi BATTERY  
STATUS  
BATTERY/TMT STATUS  
To access and view TMT Status screens, while viewing the NORM (or GAUG) Main Menu, press S (< 2 sec) when the pointer  
icon ( > ) is next to BATT/TMT will activate the OCi’s Receiver, then -  
>> after 2 seconds, access the OCi Battery Status screen, then -  
>> after 3 seconds, access the TMT 1 Status screen, then -  
>> after 3 seconds, access the TMT 2 Status screen, then -  
>> after 3 seconds, access the TMT 3 Status screen, then -  
>> after 3 seconds, access the TMT 4 Status screen, then -  
>> after 3 seconds, revert to the NORM (or GAUG) Main Menu.  
Fig. 60 - TMT BATTERY  
STATUS  
OC1 BATTERY STATUS, information is to include (Fig. 59):  
•
•
Graphics OCi and BATT GOOD (=> 2.75 v) or BATT LOW (if < 2.75 v).  
Battery icon (shell with inner bar), if a Low Battery Warning condition exists (< 2.75 v => 2.50 v). Shell only with no inner  
bar flashing if Too Low (< 2.50 v).  
TMT BATTERY STATUS, information is to include (Fig. 60):  
•
Graphics TMT1 (2, 3, 4) and BATT GOOD (if linked and => 2.75 v) or BATT LOW (if linked and < 2.75 v), or NOT AVAIL  
(Fig. 61) if the TMT is not reporting.  
Tank Pressure with PSI (or BAR) and Link (speaker) icons, if the TMT is linked and reporting.  
•
Fig. 61 - TMT NOT  
REPORTING  
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OCi OPERATING MANUAL  
DIVE MODE  
FEATURES  
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OCi OPERATING MANUAL  
NORM DIVE MODE STRUCTURE  
Surface.Mode  
at  
2 FT (0.6 M)  
for 1 sec  
at  
5 FT (1.5 M)  
for 5 sec  
Safety Stop  
Main  
A
ALTs  
ALTs  
< 2 sec  
Dive.Mode  
Deep Stop  
Main  
A
< 2 sec  
< 2 sec  
2 sec  
2 sec  
GAS/TMT  
Switching  
ack Alarms  
Compass  
M
A
S
L
DIvE.  
MAIN  
< 2 sec  
Backlight  
ALTs  
TRANSMITTER SIGNAL RECEPTION GUIDE  
bEST.  
Reception.  
Area  
Poor  
Poor  
Reception.  
Area  
Reception.  
Area  
Poor  
Reception.  
Area  
Poor  
Reception.  
Area  
Poor  
Reception.  
(when.greater.than.4.feet/1.2.meters)  
PROXIMITY OF THE TMTS (TRANSMITTERS) TO THE OCI  
The TMTs emit low frequency signals that radiate out in semicircular patterns parallel to the length dimension of the TMT. A coiled  
antenna inside the OCi receives the signals when it is positioned within a zone parallel to or at a 45 degree angle to the TMT as  
illustrated.  
The OCi cannot effectively receive a signal when it is held out to the sides of the TMT or held at distances greater than 4 feet (1.2  
meters) in front of the TMT. Best reception is achieved when the OCi is within 3 feet (1 meter) of the TMT.  
When installed into the high pressure ports of the Regulator First Stages, the TMTs must be positioned so that they face horizon-  
tally outward from the Tank Valves.  
LINK INTERRUPTION UNDERWATER  
During a dive, you may at times move the OCi out of the signal pattern of the TMT, resulting in a temporary loss of the Link sig-  
nal. The Link will be restored within 4 seconds after the OCi is moved back into its correct position.  
An interruption may also occur while the OCi is within 3 feet (1 meter) of a running DPV. The Link will be restored within 4  
seconds after the OCi is moved out of that area.  
A temporary interruption may also occur shortly after a Strobe flashes. The Link will be restored within 4 seconds.  
If the Link is not restored within 15 seconds; the Audible will sound, and the graphic LOST, Pressure value, and Link icon will flash  
(Fig. 62).  
Fig. 62 - LOST LINK  
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OCi OPERATING MANUAL  
WET ACTIVATION  
The OCi is configured with contacts that will automatically activate Dive Mode when the space between the contacts is bridged  
by a conductive material (immersed in water) and it senses a Depth of 5 FT (1.5 M) for 1 second.  
The contacts are the metal pins of the PC Interface Data Port and the stems of the buttons.  
When Wet Activation is set Off, the OCi will not enter Dive Mode while in Watch Mode unless a dive has already been con-  
ducted and it is a repetitive dive. This is to allow pre dive activities such as swimming and snorkeling which may include depths  
deeper than 5 FT (1.5 M) without activating dive mode.  
BACKLIGHT  
Pressing and releasing the L (Light) button (< 2 sec) will toggle the Backlight On/Off.  
• The light will be On for Glo Duration time set (5, 10, 30, or 60 seconds).  
• Pressing L for 2 seconds, while the light is On, will reset the timer and keep it On for the full Duration time set.  
• When alarms strike, the Backlight will come On.  
• The Backlight shuts Off when L is pressed or after the Duration time set.  
>> Extensive use of the Backlight reduces Battery life.  
>> The Backlight is disabled* upon sensing a Low Battery condition (< 2.75 v), or when the PC Interface cable is connected  
to the OCi.  
*Exception is when alarms strike and during TECH FREE dives.  
AUTO GLO (this applies to TECH FREE Mode only)  
When Auto Glo (a TECH FREE mode Set Utilities selection) is set On, Backlight operation on the surface is the same as it normally  
would be when controlled by the L button and Duration time set.  
Upon start of TECH FREE dives, the Backlight turns On automatically and remain On throughout the full dive until entry into Sur-  
face mode at which time the Backlight operation will revert to normal (controlled by the L button and Duration time set).  
BAR GRAPHS  
The OCi features 2 bar graphs, one on each side of the LCD.  
Fig. 63A - NORM DIVE  
(TLBG during No Deco)  
The one on the left represents nitrogen loading and the one on the right represents ascent rate.  
TLBG (Tissue Loading Bar Graph)  
The TLBG represents your relative No Decompression or Decompression status. The 4 lower segments represent No Deco status  
(Fig. 63A) and all 5 together indicate a Deco condition (Fig. 63B).  
As your Depth and Elapsed Dive Time increase, segments add from bottom to top; and as you ascend segments recede, indicat-  
ing that additional no deco time is available.  
Fig. 63B - NORM DIVE  
(TLBG when in Deco)  
The OCi monitors 12 different nitrogen compartments simultaneously and the TLBG displays the one that is in control of your dive  
at any given time.  
VARI (Variable Ascent Rate Indicator)  
The VARI provides a visual representation of ascent speed (i.e., an ascent speedometer). The 4 lower segments (Fig. 64A) repre-  
sent normal acceptable speeds and all 5 together flashing (Fig. 64B) indicate a rate that is too fast which must be slowed.  
The segments represent two sets of speeds which change at a reference depth of 60 FT (18 M). Refer to the chart.  
WARNING: At depths greater than 60 FT (18 M), ascent rates should not exceed 60 FPM (18 MPM).  
At depths of 60 FT (18 M) and shallower, ascent rates should not exceed 30 FPM (9 MPM).  
Fig. 64A - GAUG DIVE  
(ascent speed is ok)  
Deeper.than.60.FT.(18.M)  
60.FT.(18.M).&.Shallower  
Ascent Rate  
Ascent Rate  
Segments  
0 =  
1 =  
2 =  
3 =  
FPM  
MPM  
0 - 6  
Segments  
0 =  
1 =  
2 =  
3 =  
FPM  
MPM  
0 - 3  
0 - 20  
21 - 30  
31 - 40  
41 - 50  
51 - 60  
60 +  
0 - 10  
11 - 15  
16 - 20  
21 - 25  
26 - 30  
30 +  
6.1 - 9  
9.1 - 12  
12.1 - 15  
15.1 - 18  
18 +  
3.1 - 4.5  
4.6 - 6  
6.1 - 7.5  
7.6 - 9  
9 +  
4 =  
5 =  
4 =  
5 =  
Fig. 64B - NORM DIVE  
(when ascent is too fast)  
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OCi OPERATING MANUAL  
DUAL ALGORITHM®  
The OCi is configured with 2 algorithms which allows you to choose which set of NDLs (No Deco Limits) will be used for nitrogen/oxygen calculations and  
displays relating to Plan Mode and DTR (Dive Time Remaining) for NORM dives.  
You can select DSAT or Z+ prior to new dives. Also, the selection can be changed after dives once Desaaturation Time decreases to 0:00, otherwise the  
selection will lock in for 24 hours after the last dive.  
DSAT was the original standard used by Oceanic in all of its dive computers until the dual function was implemented several years ago. It features NDLs  
that are based on exposures and test data which also formed validation for the PADI RDP. It imposes restrictions for repetitive Decompression dives  
which are considered more risky than general No Deco dives.  
Z+ (the Pelagic Z+ algorithm) performance is based on Buhlmann ZHL-16c. It features NDLs that are considerably more conservative than the DSAT ver-  
sion especially at shallower depths.  
To create even greater margins of safety with respect to decompression, a Conservative Factor as well as Deep and Safety Stops are available and can be  
activated for NORM No Deco dives.  
CONSERVATIVE FACTOR (CF)  
When the Conservative Factor is set On, the NDLs (No Deco Limits), which are based on the algorithm selected and used for Ni/O2 calculations and  
displays relating to Plan and DTR, will be reduced to the values available at the altitude level that is 3,000 feet (915 meters) higher. See tables in back.  
DEEP STOP  
When the Deep Stop selection is set On, it will trigger during NORM No Deco dives when you descend to 80 FT (24 M) and calculate (and continually  
update) a Stop Depth equal to 1/2 the Max Depth.  
While 10 FT (3 M) deeper than the calculated Deep Stop, you will be able to access a Deep Stop Preview screen that will display the current calculated  
Deep Stop Depth and a fixed Stop Time (of 2 minutes) for 10 seconds then revert to the Main.  
Upon initial ascent to within 10 FT (3 M) below the calculated Stop Depth, a Deep Stop screen displaying a Stop Depth equal to 1/2 the Max Depth will  
appear with a timer that counts down from 2:00 to 0:00 (min:sec).  
> If you descend 10 FT (3 M) below, or ascend 10 FT (3 M) above, the calculated Stop Depth for 10 seconds during the countdown, the No Deco Main  
will replace the Deep Stop screen and the Deep Stop feature will be disabled for the remainder of that dive. There is no Penalty if the Deep Stop is  
ignored.  
> In the event that you enter Deco, exceed 190 FT (57 M), or a high O2 warning condition occurs (=> 80%), the Deep Stop feature will be disabled for  
the remainder of that dive.  
> The Deep Stop function is disabled while a high PO2 alarm condition is present (while => set point for the gas in use).  
SAFETY STOP  
If set ON:  
Upon ascent to within 5 FT (1.5 M) deeper than the Safety Stop Depth set for 1 second on a No Deco dive in which Depth exceeded 30 FT (9 M) for 1  
second, the audible will sound and a Safety Stop at the Depth set will be displayed with a countdown beginning at the Safety Stop Time set and counting  
down to 0:00 (min:sec).  
• If the Safety Stop was set for OFF or TMR (Timer), the Safety Stop screen will not appear.  
• In the event that you descend 10 FT (3 M) deeper than the Stop Depth for 10 seconds during the countdown, or the countdown reaches 0:00, the No  
Deco Main will replace the Safety Stop screen which will reappear upon ascent to within 5 FT (1.5 M) deeper than the Safety Stop Depth set for 1  
second.  
• In the event that you enter Deco during the dive, complete the Deco obligation, then descend below 30 FT (9 M); the Safety Stop screen will appear  
again upon ascent to within 5 FT (1.5 M) deeper than the Safety Stop Depth set for 1 second.  
• If you surface prior to completing it, the Safety Stop will be canceled for the remainder of that dive.  
• There is no Penalty if you surface prior to completing the Safety Stop or ignore it.  
If set for TMR (Timer):  
Upon ascending to 20 FT (6 M) for 1 second on a No Deco dive in which Depth exceeded 30 FT (9 M) for 1 second, the audible will sound and a Run  
Timer screen will appear displaying 0:00 (min:sec) until started.  
• If the Safety Stop was set for OFF or ON, the Timer screen will not appear.  
• If you descend deeper than 30 FT (9 M) for 10 seconds, the No Deco Main will replace the Safety Stop Timer screen which will reappear upon ascent  
to 20 FT (6 M) for 1 second.  
• If you ascend above 10 FT (3 M) for 10 seconds, or enter Deco, or a high O2 alarm condition occurs (100%), while the Safety Stop Timer is active,  
the Timer will be disabled for the remainder of that dive.  
• If you surface, the Safety Stop will be canceled for the remainder of that dive.  
• There is no Penalty if you surface prior to completing the Safety Stop or ignore it.  
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OCi OPERATING MANUAL  
DIVE TIME REMAINING (DTR)  
The OCi constantly monitors No Deco status (nitrogen loading) and O2 accumulation, and will use whichever time is the least  
available to calculate DTR.  
Either NDC (No Deco Time Remaining), or OTR (O2 Time Remaining), is displayed as DTR (Dive Time Remaining) on the Dive  
Main screen (Fig. 65A/B). The graphic NDC or OTR will signify which time is being displayed.  
NO DECO DIVE TIME REMAINING (NDC)  
NDC is the maximum amount of time that you can stay at your present depth before entering decompression. It is calculated  
based on the amount of nitrogen absorbed by hypothetical tissue compartments.  
Fig. 65A -NO DECO MAIN  
(NDC is DTR)  
• The rates each of these compartments absorb and release nitrogen is mathematically modeled and compared against a  
maximum allowable nitrogen level.  
• Whichever one is closest to this maximum level is the controlling compartment for that depth. Its resulting value will be  
displayed numerically as NDC time remaining and graphically as the TLBG (Tissue Loading Bar Graph).  
• As you ascend, TLBG segments will recede as control shifts to slower compartments. This feature of the decompression  
model is the basis for multilevel diving, one of the most important advantages that Oceanic dive computers offer.  
O2 DIVE TIME REMAINING (OTR)  
When set for Nitrox operation, O2 during a dive is displayed on an ALT screen as a % of total exposure allowed (Fig. 66).  
Fig. 65B -NO DECO MAIN  
(OTR is DTR)  
The limit for oxygen exposure (100%) is 300 OTU (oxygen tolerance units) per dive or 24 hour period.  
As time before reaching the limit decreases, % O2 increases and oxygen time remaining (OTR) decreases.  
When OTR becomes less than the NDC, calculations for the dive will be controlled by O2 and OTR will be displayed on the  
Main. NDC will then be displayed on an ALT screen that can be accessed.  
Fig. 66 - NO DECO ALT 3  
(% of O2 Saturation)  
AIR TIME REMAINING (ATR)  
The OCi calculates ATR using a patented algorithm that is based on the diver's air consumption rate and current depth.  
ATR is the time you can remain at your present depth and still safely surface with the tank pressure reserve that you selected dur-  
ing setup (the End Pressure alarm setting).  
Tank pressure is measured once each second and an average rate of consumption is calculated over a 90 second period, and  
used in conjunction with the depth to predict the amount of air required to make a safe controlled ascent, including the No Deco  
Deep and Safety Stops and any required Deco Stops.  
Air consumption and depth are continuously monitored and ATR reflects any change in circumstances, such as beginning to  
breath more rapidly when swimming against a current which the OCi will recognize as a change and adjust ATR accordingly.  
Fig. 67 - NO DECO MAIN  
(38 min ATR remaining)  
ATR is displayed numerically (from 0 to 99* min) on the Dive Main screen (Fig. 67).  
*ATR remains at 99 min when => 99 minutes.  
ATR Alarm  
When ATR (Air Time Remaining) decreases to 5 minutes, the audible will sound and the ATR digits will flash (Fig. 68). If it de-  
creases to 0, the audible will sound again. The digits will continue to flash until ATR becomes greater than 5 minutes.  
Action (upon activation of the alarm) >> You should initiate a controlled ascent while monitoring tank pressure. However, there  
is no reason to panic, the OCi has allowed for the air necessary for a safe ascent including the No Deco Deep and Safety  
Stops, if set on, and any Deco Stops required.  
Fig. 68 - NO DECO MAIN  
(during ATR Alarm)  
RESET DURING A DIVE (ERROR)  
If for any reason, the OCi shuts Off then turns On again during any dive, the graphics UP and ERROR will be displayed with the  
Up Arrow icons and current Depth with FT (or M) icon (Fig. 69).  
If this occurs, it is highly recommended that you terminate the dive and begin a safe ascent to the surface.  
Upon surfacing, ERROR will be displayed for 5 seconds (Fig. 70) and operation will revert to Watch Mode.  
Fig. 69 -ERROR  
(during dive)  
Any time thereafter, when access to Dive Computer Operating Mode is attempted from Watch Mode, only the graphic ERROR  
will be displayed and operation will revert to Watch Mode. No Dive Computer modes/screens will be accessible.  
If this occurs, the OCi must be returned to the factory for evaluation/service prior to any further use for diving activities.  
Fig. 70 -ERROR  
(after surfacing)  
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OCi OPERATING MANUAL  
NORM  
DIVE MODE  
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OCi OPERATING MANUAL  
NO DECO MAIN, information includes (Fig. 71A/B) -  
> Current Depth with FT (or M) icon.  
> DTR (hr:min) with graphic NDC (or OTR), whichever is less at the time.  
> Graphic GAS - 1 (or 2, 3, 4), one in use.  
> NX icon, if any Gas is set for Nitrox.  
> Air Time Remaining (up to 99 min) with min and ATR icons, blank if no TMT in use, 99 when => 99.  
> Tank Pressure, for the TMT currently in use, with PSI (or BAR) and Link (speaker) icons. If no TMT is in use, the graphic SPG  
(meaning Submersible Pressure Gauge) will be displayed with no icons and no ATR.  
> TLBG with icon.  
Fig. 71A - NO DECO MAIN  
> VARI with icon, while ascending.  
• A (< 2 sec) - to access ALTs, and the Deep Stop Preview if triggered**.  
• M (2 sec) - to access the Gas/TMT Switch Menu**.  
• S (< 2 sec) - to acknowledge alarms.  
• S (2 sec) - to access the Compass Operating Main**.  
• L (< 2 sec) - to toggle the Backlight On/Off.  
• L (2 sec), while the Backlight is On - to reset the timer and keep it On for the duration time set.  
**These items can only be accessed while viewing the Main.  
NO DECO ALT 1, information includes (Fig. 72) -  
> Max Depth with FT (or M) and MAX icons.  
> Elapsed Dive Time (hr:min) with graphic EDT.  
Fig. 71B - NO DECO MAIN  
(no TMT in use)  
• A (< 2 sec) - to access ALT 2.  
• M (< 2 sec) - to step back to the Main.  
• Revert to the Main after 10 seconds, if A or M is not pressed.  
• L (< 2 sec) - to toggle the Backlight On/Off.  
• L (2 sec), while the Backlight is On - to reset the timer and keep it On for the duration time set.  
NO DECO ALT 2, information includes (Fig. 73) -  
> Time of Day (hr:min_sec), with A (or P) if 12 Hour.  
> Temperature with ° icon and graphic F (or C).  
Fig. 72 - NO DECO ALT 1  
• A (< 2 sec) - to access ALT 3, if Nitrox or Deep Stop Preview if Air.  
• M (< 2 sec) - to step back to ALT 1.  
• Revert to the Main after 10 seconds, if A or M is not pressed.  
• L (< 2 sec) - to toggle the Backlight On/Off.  
• L (2 sec), while the Backlight is On - to reset the timer and keep it On for the duration time set.  
NO DECO ALT 3, information includes (Fig. 74) -  
> Current O2 saturation with graphic % O2 SAT.  
> Graphic GAS - 1 (or 2, 3, 4), the one currently in use.  
> FO2 setting for the Gas in use with icon.  
> Current PO2 value (ATA) with icon.  
Fig. 73 - NO DECO ALT 2  
> NX icon.  
• A (< 2 sec) - to access Deep Stop Preview if triggered, or the Main if not.  
• M (< 2 sec) - to step back to ALT 2.  
• Revert to the Main after 10 seconds, if A or M is not pressed.  
• L (< 2 sec) - to toggle the Backlight On/Off.  
• L (2 sec), while the Backlight is On - to reset the timer and keep it On for the duration time set.  
Fig. 74 - NO DECO ALT 3  
DEEP STOP PREVIEW, information includes (Fig. 75) -  
> Graphics DEEP STOP PREV.  
> Stop Depth with graphic FT (or M), calculated to be 1/2 Max Depth.  
> Stop Time as 2:00 (min:sec).  
• A (< 2 sec) - to revert to the Main.  
• M (< 2 sec) - to step back to ALT 3.  
• Revert to the Main after 10 seconds, if A or M is not pressed.  
• L (< 2 sec) - to toggle the Backlight On/Off.  
• L (2 sec), while the Backlight is On - to reset the timer and keep it On for the duration time set.  
Fig. 75 - DEEP STOP  
PREVIEW  
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DEEP STOP MAIN, information includes (Fig. 76) -  
> Current Depth with FT (or M) icon.  
> Graphics DEEP STOP.  
> Stop Depth with graphic FT (or M)  
> Stop Time (min:sec), counting down from 2:00 to 0:00.  
> Graphic GAS - 1 (or 2, 3, 4), the one currently in use.  
> NX icon, if any Gas is set for Nitrox.  
> Air Time Remaining (up to 99 min) with min and ATR icons, blank if no TMT in use, 99 when => 99.  
> Tank Pressure, for the TMT currently in use, with PSI (or BAR) and Link icons; or graphic SPG.  
> TLBG with icon.  
Fig. 76 - DEEP STOP MAIN  
> VARI with icon, if ascending.  
• A (< 2 sec) - to access ALTs.  
• M (2 sec) - to access the Gas/TMT Switch Menu.  
• S (< 2 sec) - to acknowledge alarms.  
• S (2 sec) - to access the Compass Operating Main.  
• L (< 2 sec) - to toggle the Backlight On/Off.  
• L (2 sec), while the Backlight is On - to reset the timer and keep it On for the duration time set.  
DEEP STOP ALT 1, information includes (Fig. 77) -  
> Max Depth with FT (or M) and MAX icons.  
Fig. 77 - DEEP STOP ALT 1  
> DTR (hr:min) with graphic NDC (or OTR), whichever is less at the time.  
> Elapsed Dive Time (hr:min) with graphic EDT.  
• A (< 2 sec) - to access ALT 2.  
• M (< 2 sec) - to step back to the Main.  
• Revert to the Main after 10 seconds, if A or M is not pressed.  
• L (< 2 sec) - to toggle the Backlight On/Off.  
• L (2 sec), while the Backlight is On - to reset the timer and keep it On for the duration time set.  
DEEP STOP ALT 2 & 3 are similar to NO DECO ALT 2 & 3.  
SAFETY STOP MAIN (if Stop Depth/Time is set On), information includes (Fig. 78) -  
> Current Depth with FT (or M) icon.  
> Graphics SAFE STOP.  
> Stop Depth with FT (or M).  
> Stop Time (min:sec) set, counting down to 0:00.  
> Graphic GAS - 1 (or 2, 3, 4), the one currently in use.  
> NX icon, if any Gas is set for Nitrox.  
> Air Time Remaining (up to 99 min) with min and ATR icons.  
> Tank Pressure, for the TMT currently in use, with PSI (or BAR) and Link icons; or graphic SPG.  
> TLBG with icon.  
Fig. 78 - SAFETY STOP MAIN  
(Stop Depth/Time set)  
> VARI with icon, if ascending.  
• A (< 2 sec) - to access ALTs.  
• M (2 sec) - to access the Gas/TMT Switch Menu.  
• S (< 2 sec) - to acknowledge alarms.  
• S (2 sec) - to access the Compass Operating Main.  
• L (< 2 sec) - to toggle the Backlight On/Off.  
• L (2 sec), while the Backlight is On - to reset the timer and keep it On for the duration time set.  
SAFETY STOP MAIN (if set for Timer use), information includes (Fig. 79) -  
> Current Depth with FT (or M) icon.  
> Graphics SAFE STOP.  
> Stop Depth with FT (or M).  
> Graphic TIMER with Run Time counting up to 9:59 max (min:sec) then - : - - .  
> Graphic GAS - 1 (or 2, 3, 4), the one currently in use.  
> NX icon, if any Gas is set for Nitrox.  
> Air Time Remaining (up to 99 min) with min and ATR icons.  
> Tank Pressure, for the TMT currently in use, with PSI (or BAR) and Link icons; or graphic SPG.  
> TLBG with icon.  
> VARI with icon, if ascending.  
Fig. 79 - SAFETY STOP MAIN  
(set for Timer use)  
• A (< 2 sec) - to access ALTs.  
• M (2 sec) - to access the Gas/TMT Switch Menu.  
• S (< 2 sec) - to acknowledge alarms.  
• S (2 sec) - to access the Compass Operating Main.  
• L (< 2 sec) - to toggle the Backlight On/Off.  
• L (2 sec), while the Backlight is On - to reset the timer and keep it On for the duration time set.  
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SAFETY STOP ALT 1 - similar to DEEP STOP ALT 1.  
SAFETY STOP ALT 2 & 3 - similar to NO DECO ALT 2 & 3.  
--------------------------------------------------------------------------------------------------------------------------------  
DECOMPRESSION MODE  
Decompression mode activates when theoretical No Decompression time and depth limits are exceeded.  
Flashing  
Upon Entry into Deco, the Audible will sound and the LED will flash. The full TLBG and graphic UP with Up Arrow icons will flash  
(Fig. 80) until the Audible is silenced by pressing S or 10 seconds elapse.  
• S (< 2 sec) - to silence the Audible.  
> The TLBG stops flashing when the Audible is silenced.  
> The graphic UP with Up Arrow icons continue to flash until within 10 FT (3 M) of and below the required Stop Depth (within  
the stop zone), then they are removed.  
Fig. 80 - DECO ENTRY  
Managing Deco Stops  
To fulfill your decompression obligation, you should make a safe controlled ascent to a depth slightly deeper than, or equal to, the  
required Stop Depth indicated and decompress for the Stop Time indicated.  
The amount of decompression credit time that you receive is dependent on Depth, with slightly less credit given the deeper you  
are below the Stop Depth indicated.  
You should stay slightly deeper than the required Stop Depth indicated until the next shallower Stop Depth appears. Then, you  
can slowly ascend to, but not shallower than that indicated Stop Depth.  
DECO STOP MAIN, information includes (Fig. 81) -  
> Current Depth with FT (or M) icon.  
> Stop Depth with graphic FT (or M).  
> Stop Time (hr:min).  
> Graphic GAS - 1 (or 2, 3, 4), the one currently in use.  
> NX icon, if any Gas is set for Nitrox.  
> Air Time Remaining (up to 99 min) with min and ATR icons, blank if no TMT in use, 99 when => 99.  
> Tank Pressure, for the TMT currently in use, with PSI (or BAR) and Link icons; or graphic SPG.  
> TLBG with icon.  
> VARI with icon, if ascending.  
Fig. 81 - DECO STOP MAIN  
• A (< 2 sec) - to access ALT 1.  
• M (2 sec) - to access the Gas/TMT Switch Menu.  
• S (< 2 sec) - to acknowledge alarms.  
• S (2 sec) - to access the Compass Operating Main.  
• L (< 2 sec) - to toggle the Backlight On/Off.  
• L (2 sec), while the Backlight is On - to reset the timer and keep it On for the duration time set.  
DECO STOP ALT 1, information includes (Fig. 82) -  
> Max Depth with FT (or M) and MAX icons.  
> Total Ascent Time** (hr:min) with graphic TAT.  
> Elapsed Dive Time (hr:min) with graphic EDT.  
**TAT includes Stop Times at all required Deco Stops plus vertical Ascent Time based on the max rate allowed.  
• A (< 2 sec) - to access ALT 2.  
• M (< 2 sec) - to step back to Main.  
• Revert to Main in 10 seconds, if A not pressed.  
• L (< 2 sec) - to toggle the Backlight On/Off.  
• L (2 sec), while the Backlight is On - to reset the timer and keep it On for the duration time set.  
Fig. 82 - DECO STOP ALT 1  
DECO STOP ALT 2, information includes (Fig. 83) -  
> Time of Day (hr:min_sec), with A (or P) if 12 Hour.  
> Temperature with ° icon and graphic F (or C).  
• A (< 2 sec) - to access ALT 3.  
• M (< 2 sec) - to step back to ALT 1.  
• Revert to Main in 10 seconds, if A not pressed.  
• L (< 2 sec) - to toggle the Backlight On/Off.  
• L (2 sec), while the Backlight is On - to reset the timer and keep it On for the duration time set.  
Fig. 83 - DECO STOP ALT 2  
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DECO STOP ALT 3, information includes (Fig. 84) -  
> Current O2 saturation with graphics % O2 SAT.  
> Graphic GAS - 1 (or 2, 3, 4), the one currently in use.  
> FO2 setting for the Gas in use with icon.  
> Current PO2 value (ATA) with icon.  
> Nx icon.  
• A (< 2 sec) - to revert to Main.  
• M (< 2 sec) - to step back to ALT 2.  
• Revert to Main in 10 seconds, if A is not pressed.  
• L (< 2 sec) - to toggle the Backlight On/Off.  
Fig. 84 - DECO STOP ALT 3  
• L (2 sec), while the Backlight is On - to reset the timer and keep it On for the duration time set.  
CONDITIONAL VIOLATION (CV)  
Flashing  
Upon ascent above the required Deco Stop Depth, operation will enter Conditional Violation during which no off gassing credit  
will be given; with remaining Deco Stop Time and Total Ascent Time freezing.  
The Audible will sound and the LED will flash until S is pressed or 10 seconds elapse.  
• S (< 2 sec) - to silence the Audible.  
> The graphic DOWN with Down Arrow icons flash (Fig. 85) until within 10 FT (3 M) of and below the required Stop Depth  
(within the stop zone), then they are removed.  
> While above the Stop Depth, 1-1/2 minutes penalty time is added to Stop Time and TAT for every minute that elapses.  
Fig.85 - CV MAIN  
If descent below the required Deco Stop Depth is made within 5 minutes, operation will resume in Deco with off gassing credit  
given (Stop Time and TAT then decrease).  
DELAYED VIOLATION 1 (DV1)  
Once above the Deco Stop Depth for more than 5 minutes, operation will enter Delayed Violation 1 which is a continuation of  
Conditional Violation**.  
**The difference between DV1 and CV is that DV1 causes operation to enter Violation  
Gauge Mode 5 minutes after surfacing from that dive and CV does not.  
The Audible will sound and the LED will flash for 10 seconds during which the full TLBG will flash (Fig. 86) until the Audible is  
silenced. The Audible cannot be silenced by pressing S.  
Fig. 86 - DV1 MAIN  
(during the Audible)  
> The graphic DOWN with Down Arrow icons continue to flash until within 10 FT (3 M) of and below the required Stop Depth  
(within the stop zone), then they are removed.  
DELAYED VIOLATION 2 (DV2)  
If Decompression requires a Stop Depth between 60 FT (18 M) and 70 FT (21 M), operation will enter Delayed Violation 2.  
The Audible will sound and the LED will flash for 10 seconds during which the full TLBG will flash (Fig. 87) until the Audible is  
silenced. The Audible cannot be silenced by pressing S.  
> The graphic UP with Up Arrow icons flash until ascent to within 10 FT (3 M) of and below the required Stop Depth when  
they will be removed.  
CV, DV1, AND DV2 ALTS - similar to the DECO ALTs.  
Fig. 87 - DV2 MAIN  
(at stop, after the Audible)  
DELAYED VIOLATION 3 (DV3)  
Upon descent deeper than 330 FT (100 M)*, the Audible will sound and the LED will flash. Until ascent is made above 330  
FT (100 M), the graphic UP with Up Arrow icons will flash and Dive Time Remaining (NDC) will only display 3 dashes ( - : - - )  
signifying that you are out of range.  
*This is the Maximum Operating Depth at which the OCi can accurately perform nitrogen/oxygen calculations.  
Upon ascending above 330 FT (100 M), the graphic UP with Up Arrow icons will be removed.  
DV3 MAIN, information includes (Fig. 88) -  
> Current Depth flashing with FT (or M) icon.  
> DTR as 3 dashes ( - : - - ) with graphic NDC (or OTR).  
> Graphic GAS - 1 (or 2, 3, 4), the one currently in use.  
> NX icon, if any Gas is set for Nitrox.  
> Air Time Remaining (up to 99 min) with min and ATR icons, blank if no TMT in use.  
> Graphic UP with Up Arrows, flashing.  
> Tank Pressure, for the TMT currently in use, with PSI (or BAR) and Link icons; or graphic SPG.  
> TLBG with icon.  
> VARI with icon, if ascending.  
Fig. 88 - DV3 MAIN  
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• A (< 2 sec) - to access ALT 1.  
• M (2 sec) - to access the Gas/TMT Switch Menu.  
• S (< 2 sec) - to acknowledge other type alarms.  
• S (2 sec) - to access the Compass Operating Main.  
• L (< 2 sec) - to toggle the Backlight On/Off.  
• L (2 sec), while the Backlight is On - to reset the timer and keep it On for the duration time set.  
DV3 ALTS - similar to the NO DECO ALTs.  
--------------------------------------------------------------------------------------------------------------------------------------------  
VIOLATION GAUGE MODE (VGM)  
If a Deco Stop Depth greater than 70 FT (21 M) is required, operation will enter VGM. This would be preceded by DV2.  
Operation would then continue in VGM during the remainder of that dive and for 24 hours after surfacing with no nitrogen/oxy-  
gen related calculations or displays.  
Upon activation, the graphic VIOLATION is displayed in place of Deco Stop information, the Audible will sound, and the LED will  
flash. The full TLBG and graphic UP with Up Arrow icons will flash until the Audible is silenced after 10 seconds elapse.  
The Audible cannot be silenced by pressing S.  
Flashing  
> The TLBG is removed when the Audible is silenced.  
> The graphic UP with Up Arrow icons continue to flash until on the surface, then they are removed.  
VGM MAIN, information includes (Fig. 89) -  
> Current Depth with FT (or M) icon.  
> Graphic VIOLATION solid.  
> Graphic GAS - 1 (or 2, 3, 4), the one currently in use.  
> Graphic UP with Up Arrow icons, flashing until on surface.  
> NX icon, if any Gas is set for Nitrox.  
> Air Time Remaining (up to 99 min) with min and ATR icons, blank if no TMT in use.  
> Tank Pressure, for the TMT currently in use, with PSI (or BAR) and Link icons; or graphic SPG.  
> TLBG with icon, flashing during the Audible then removed.  
> VARI with icon, if ascending.  
Fig. 89 - VGM MAIN  
(during Audible)  
• A (< 2 sec) - to access ALT 1.  
• S (2 sec) - to access the Compass Operating Main.  
• L (< 2 sec) - to toggle the Backlight On/Off.  
• L (2 sec), while the Backlight is On - to reset the timer and keep it On for the duration time set.  
VGM ALTS 1 & 2 - similar to the DECO ALTs 1 & 2 except that TAT is not displayed. There is no ALT 3 (O2 data).  
Fig. 90A - VGM SURF MAIN  
(during the first 10 minutes)  
VGM ON SURFACE  
The graphic VIOLATION is displayed for the first 10 minutes (Fig. 90A), then VIOL alternates with NORM (Fig. 90B) until 24  
hours elapse with no dives.  
During that 24 hours, VGM lockout does not allow access to the Set Gas, Plan, Desat, and FREE Mode features/screens. All  
Watch and Compass functions will be allowed.  
The Fly countdown timer provides the time remaining before normal operation can resume with full features and functions.  
In the event that a dive is made during the 24 hour lockout period, a full 24 hour surface interval must then be served before  
all functions are restored.  
Fig. 90B - VGM SURF MAIN  
(after 10 minutes elepase)  
--------------------------------------------------------------------------------------------------------------------------------------------  
HIGH PO2  
Warning >> at .80 to 1.40 (= Alarm set point value for the Gas in use minus .20), no warning in Deco.  
Alarm >> at 1.00 to 1.60 (= set point value for the Gas in use); except in Deco, then at 1.60 only.  
High PO2 during No Deco  
When partial pressure of oxygen (PO2) increases to the Warning level for the Gas in use, the Audible sounds during which the  
PO2 value with icon will flash (in place of Pressure) until the Audible is silenced (Fig. 91).  
Fig. 91 - PO2 WARNING  
(No Deco, during Audible)  
After the Audible is silenced by pressing S or 10 seconds elapse, Pressure is restored.  
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OCi OPERATING MANUAL  
If PO2 continues to increase and reaches the Alarm setting for the gas in use, the Audible sounds again during which the graphic  
UP with Up Arrow icons will flash, and the PO2 value with icon will flash (in place of Pressure) until the Audible is silenced (Fig.  
92).  
After the Audible is silenced by pressing S or 10 seconds elapse, PO2 will alternate with Pressure until PO2 decreases below  
the Alarm level, then Pressure will be restored with PO2 removed.  
The graphic UP and Up Arrow icons remain on flashing until PO2 decreases below the Alarm level, then they are removed.  
Fig. 92 - PO2 ALARM  
(No Deco, after the Audible)  
High PO2 during Deco  
When in Deco, PO2 will only alarm at 1.60, regardless of the Gas in use and the PO2 alarm value set for that Gas. There is  
also no warning given.  
> When PO2 reaches 1.60, the Audible will sound during which the PO2 value (1.60) with icon will flash in place of Pressure  
(Fig. 93).  
> When the Audible is silenced, PO2 will alternate with Pressure until PO2 decreases below 1.60 at which time Pressure will  
be restored and the PO2 information removed.  
BUTTON OPERATIONS & ALT DISPLAYS FOR HIGH PO2 - similar to those described for NO DECO and DECO.  
Fig. 93 - PO2 ALARM  
(Deco, during Audible)  
--------------------------------------------------------------------------------------------------------------------------------------------  
HIGH O2  
Warning >> at 80% (240 OTU for a dive or day).  
Alarm >> at 100% (300 OTU for a dive or day).  
High O2 during No Deco  
Upon activation of the Warning (80%), the Audible will sound during which the % of O2 will flash in place of DTR (NDC or OTR)  
(Fig. 94).  
Fig. 94 - O2 WARNING  
(No Deco, during Audible)  
> Pressing S (< 2 sec), or after 10 seconds elapse, will silence the Audible.  
> When the Audible is silenced, DTR will be restored.  
If O2 increases to the Alarm level (100%), the Audible will sound again and the O2 value with graphic O2 SAT will replace DTR  
(Fig. 95) until on the surface.  
High O2 during Deco  
If a High O2 Warning (80%) occurs while at a Deco Stop, the Audible will sound during which the % of O2 will flash in place of  
Stop Depth/Time (Fig. 96). No indication will be given to ascend which is your decision based on activity at the time.  
Fig. 95 - O2 ALARM  
(No Deco, Deco similar)  
> Pressing S (< 2 sec), or after 10 seconds elapse, will silence the Audible.  
> When the Audible is silenced, Stop Depth/Time will be restored.  
If O2 increases to the Alarm level (100%), the Audible will sound again, the O2 value with graphic O2 SAT will replace Stop  
Depth/Time, and the graphic UP with Up Arrows will flash until on the surface (similar to Fig. 95).  
O2 Alarm after Surfacing  
If O2 is 100% upon surfacing while in No Deco, 100% O2 SAT will be displayed flashing in place of the graphic NORM and  
the algorithm graphic (Fig. 97) until 10 minutes elapse, then it will alternate with them until O2 decreases below 100% when the  
NORM Surface Main will be restored.  
Fig. 96 - O2 WARNING  
(Deco, during Audible)  
If O2 is 100% upon surfacing while in Deco, 100% O2 SAT will be displayed flashing in place of the graphic NORM and the  
algorithm graphic (similar to Fig. 97) until 5 minutes elapse, then operation will revert to Violation Gauge Mode.  
BUTTON OPERATIONS & ALT DISPLAYS FOR HIGH O2 - similar to those described for NO DECO and DECO.  
Fig. 97 - O2 ALARM  
(on surface)  
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OCi OPERATING MANUAL  
NORM  
GAS/TMT  
SWITCHING  
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Fig. 98 - GAS SWITCH MENU  
Fig. 99 - GAS SWITCH TO  
OVERVIEW  
> All dives begin with GAS 1 and TMT 1.  
> The GAS and TMT default to # 1 after 10 minutes on the surface.  
> Can only switch when a Dive Main screen is displayed.  
> Cannot switch while on the surface.  
> Cannot access the Switch Menu or perform a switch during the sounding of alarms.  
> If an alarm strikes while in the Switch Menu, the switch operation is terminated reverting to the Main.  
GAS SWITCH MENU, information includes (Fig. 98):  
M (< 2 sec), while a Dive Main is displayed - to access the Switch Menu, if 2 or more gasses are set for use.  
> Graphic Goto.  
> Graphic selections GAS 1, GAS 2, GAS 3, GAS 4 with FO2 settings.  
The Arrow icon ( > ) will be next to the Gas in use at the time.  
A (< 2 sec) - to step forward (down) through the selections.  
M (< 2 sec) - to step back (up) through the selections.  
S (< 2 sec) - to access the Switch To screen for the Gas indicated by Arrow icon ( > ). No access is provided if OFF.  
GAS SWITCH TO, information includes (Fig. 99):  
> Graphics SWITCH TO GAS 1 (or 2, 3, 4).  
> FO2 setting for that Gas with icon.  
> PO2 calculated for that Gas with icon.  
> NX icon, if Nitrox.  
• S (< 2 sec) - to initiate a Switch from the Gas (and TMT) in use to the Gas indicated (and it's TMT),  
> After 2 seconds, a TMT Search screen (Fig. 100A) will appear for 10 seconds, then revert to the Main with the new Gas  
(and TMT) selected.  
> If the TMT is not reporting, a message will be displayed for 10 seconds (Fig. 100B) and the Switch will be canceled.  
Fig. 100A - TMT SEARCH  
Gas Switch Alarm  
If a switch to the new Gas would result in PO2 => 1.60, the Audible will sound and a warning message will flash (Fig. 101) until  
the Audible is silenced by S (< 2 sec) or 10 seconds elapse, then the Switch To screen (Fig. 99) will be restored.  
Due to the possibility that sufficient air may not be available in the Switch From tank, the switch will still be allowed.  
If the switch is made, the PO2 alarm will strike. If in Deco, indication will not be given to ascend (you must control action to be  
taken based on activity at that time).  
Fig. 100B - TMT NOT  
REPORTING  
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------  
Fig. 101 - GAS SWITCH  
ALARM  
WARNINGS  
Decompression diving, or diving deeper than 130 FT (39 M), will greatly increase your risk of decompression sickness.  
Decompression diving is inherently hazardous and greatly increases your risk of decompression sickness, even when performed  
according to the dive computer's calculations.  
Using an OCi is no guarantee of avoiding decompression sickness.  
The OCi enters Violation Mode when a situation exceeds its capacity to predict an ascent procedure. These dives represent gross  
excursions into decompression that are beyond the boundaries and spirit of the OCi's design. If you are following these dive  
profiles, Oceanic advises that you should not use an OCi.  
If you exceed certain limits, the OCi will not be able to help you get safely back to the surface. These situations exceed tested  
limits and can result in loss of some functions for 24 hours after the dive in which a violation occurred.  
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OCi OPERATING MANUAL  
DIGITAL GAUGE  
OP MODE  
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OCi OPERATING MANUAL  
DIGITAL GAUG MODE STRUCTURE  
SURFACE  
S
2s  
M
2s  
Watch.Mode  
ALTs  
Compass  
Light  
SURF  
MAIN  
A
< 2s  
L
M
< 2s  
M, S  
2s  
Main.Menu  
FLY  
access  
selection  
S
< 2s  
>
LOG  
A
< 2s  
SET.A  
S 2 sec to revert  
from Menu  
SET.U  
to SURF Main.  
M
< 2s  
OP.MODE  
HISTORY  
OCi.ID  
bATT/TMT  
Surface.Mode  
at  
2.FT.(0.6.M)  
for.1.sec  
at  
5.FT.(1.5.M)  
for.5.sec  
Dive.Mode  
DIVE  
S
2s  
S
M
2s  
Compass  
TMT.Switch.Menu  
Start/Stop.Run.Timer,.or.  
Acknowledge.Alarms  
DIvE  
MAIN  
< 2s  
A
2s  
A
Reset.Run.Timer  
ALT  
L
Light  
< 2s  
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GAUG SURF MAIN, information includes (Fig. 102):  
> Surface Interval Time (hr:min) with SURF icon; if no dive yet, this is time since access to GAUG.  
> Graphic GAUG.  
> Graphic TMT-1*.  
> Graphic DIVE and number of the dive just completed during that operating period, up to 24 (0 if no dive made yet).  
> Pressure* with PSI (or BAR) and Link icons.  
> Battery icon, if voltage is low.  
*TMT #1 and Tank #1 Pressure are the defaults before dives & 10 minutes after surfacing.  
During the first 10 minutes after surfacing, the TMT and Pressure represent the Tank in use.  
Fig. 102 - GAUG SURF MAIN  
• A (< 2 sec) - to access ALT 1.  
• M (< 2 sec) - to access GAUG Menu, except during 10 minutes after surfacing from dives.  
• M (2 sec) - to access Watch Main.  
• S (2 sec) - to access Compass Mode.  
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.  
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.  
GAUG SURF ALT 1 (Last), information includes (Fig. 103):  
> Graphic LAST DIVE, indicating that data is from the dive previously conducted while in GAUG mode.  
> Max Depth with FT (or M) and MAX icons, 2 dashes ( - - ) if no previous dive.  
> Elapsed Dive Time (hr:min) with graphic EDT, 3 dashes ( - : - - ) if no previous dive.  
Fig. 103 - GAUG SURF ALT 1  
(Last dive's data)  
• A (< 2 sec) - to access ALT 2.  
• 10 sec - revert to Main, if A is not pressed.  
• L - to operate the Backlight.  
GAUG SURF ALT 2, information includes (Fig. 104):  
> Time of Day (hr:min_sec) with A (or P).  
> Altitude graphic, if EL2 (to EL7), blank if Sea level.  
> Temperature with ° icon and graphic F (or C).  
Fig. 104 - GAUG SURF ALT 2  
• A (< 2 sec) - to revert to Main.  
• 10 sec - revert to Main, if A is not pressed.  
• L - to operate the Backlight.  
GAUG MAIN MENU (Fig. 105)  
Button operations:  
GAUG  
MAIN.MENU  
• M (< 2 sec) - to access the Menu, while viewing the Surface Main.  
• A (< 2 sec) - to step down (forward) through selections.  
• M (< 2 sec) - to step up (backward) through selections.  
• S (< 2 sec) - to access a selection indicated by the pointer icon ( > ).  
• S (2 sec), while viewing the menu - to revert to Surface Main.  
• M (2 sec) any time - to revert to Surface Main.  
FLY  
LOG  
>
SET.ALARMS  
SET.UTILITIES  
OP.MODE  
HISTORY  
OCi.ID  
Fig. 105 - GAUG MAIN MENU  
(sample screen)  
bATT/TMT  
• 2 min (no button action) - will revert to Surface Main.  
FLY TIME  
Fly Time is a countdown timer that begins counting down 10 minutes after surfacing from a dive from 23:50 to 0:00 (hr:min).  
The Fly countdown runs in the background while on the surface.  
Information includes (Fig. 106):  
> Graphic FLY with Time to Fly (hr:min), 0:00 if no dive yet, dashes ( - : - - ) during first 10 min on surface.  
• S (< 2 sec) - to revert to the Main Menu.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.  
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.  
Log, most Set Alarms, and most Set Utilities menu items are similar to those previously described for  
NORM. Refer to pages 22 to 26 except as follows.  
Fig. 106 - GAUG FLY  
(10 min after dive)  
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RUN TIMER  
The GAUG Mode Set Utilities Menu includes an item that allows a Run Timer to be added to the GAUG Dive Main screen.  
SET RUN TIMER, information includes (Fig. 107):  
> Graphic RUN TIMER.  
> Graphics OFF and ON with the Arrow ( > ) icon next to the one previously saved flashing.  
• S (2 sec) - to revert to the Set Utilities Menu.  
• A or M (< 2 sec) - to toggle between OFF and ON*.  
• S (< 2 sec) - to save the setting and revert to the Set Utilities Menu.  
Fig. 107 - SET RUN TIMER  
*Selecting ON will enable the Timer, not start it. That is accomplished while in Dive Mode.  
---------------------------------------------------------------------------------------------------------  
Upon descent to 5 FT (1.5 M) for 5 seconds, operation will enter GAUG Dive Mode.  
GAUG DIVE MAIN, information includes (Fig. 108A/B) -  
> Current Depth with FT (or M) icon.  
> Run Time (hr:min) with graphic TIMER, 0:00 until started, up to 9:59; blank if set OFF.  
> Elapsed Dive Time (hr:min) with graphic EDT.  
> Graphic TMT - 1 (or 2, 3, 4), one in use.  
> Air Time Remaining (up to 99 min) with min and ATR icons, blank if no TMT in use, 99 when => 99.  
> Tank Pressure, for the TMT currently in use, with PSI (or BAR) and Link icons. If no TMT is in use, the graphic SPG (meaning  
Submersible Pressure Gauge) will be displayed with no icons and no ATR.  
> VARI with icon, while ascending.  
Fig. 108A - GAUG DIVE MAIN  
(Run Timer set OFF)  
• A (< 2 sec) - to access ALT.  
• M (2 sec) - to access the TMT Switch Menu.  
• S (< 2 sec) - to acknowledge alarms.  
• S (2 sec) - to access the Compass Operating Main.  
• L (< 2 sec) - to toggle the Backlight On/Off.  
• L (2 sec), while the Backlight is On - to reset the timer and keep it On for the duration time set.  
GAUG DIVE ALT, information includes (Fig. 109) -  
> Max Depth with FT (or M) and MAX icons.  
> Time of Day (hr:min_sec), with A (or P) if 12 Hour.  
> Temperature with ° icon and graphic F (or C).  
Fig. 108B - GAUG DIVE MAIN  
(Run Timer set ON)  
• A or M (< 2 sec) - to revert to Main.  
• Revert to the Main after 10 seconds, if A or M is not pressed.  
• L (< 2 sec) - to toggle the Backlight On/Off.  
• L (2 sec), while the Backlight is On - to reset the timer and keep it On for the duration time set.  
DELAYED VIOLATION 3 (DV3)  
Upon descent deeper than 330 FT (100 M), the Audible will sound and the LED will flash. The graphic UP with Up Arrow icons  
will be displayed flashing, signifying that you are out of range, until ascent is made above 330 FT (100 M).  
Fig. 109 - GAUG DIVE ALT  
Upon ascending above 330 FT (100 M), graphic UP with Up Arrow icons will be removed.  
DV3 MAIN, information includes (Fig. 110) -  
> Current Depth with FT (or M) icon.  
> Run Time (hr:min) with graphic TIMER, 0:00 until started, up to 9:59; blank if set OFF.  
> Elapsed Dive Time (hr:min) with graphic EDT.  
> Graphic TMT - 1 (or 2, 3, 4), one in use.  
> Air Time Remaining (up to 99 min) with min and ATR icons.  
> Graphic UP with Up Arrows, flashing.  
> Tank Pressure, for the TMT currently in use, with PSI (or BAR) and Link icons.  
> VARI with icon, while ascending.  
• A (< 2 sec) - to access ALT.  
Fig. 110 - GAUG DV 3 MAIN  
(Run Timer set OFF)  
• M (2 sec) - to access the TMT Switch Menu.  
• S (< 2 sec) - to acknowledge alarms.  
• S (2 sec) - to access the Compass Operating Main.  
• L (< 2 sec) - to toggle the Backlight On/Off.  
• L (2 sec), while the Backlight is On - to reset the timer and keep it On for the duration time set.  
DV3 ALT - similar to the Dive ALT.  
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OCi OPERATING MANUAL  
GAUG MODE TMT SWITCHING (Transmitters/Tanks)  
> All dives begin with TMT 1.  
> The TMT defaults to # 1 after 10 minutes on the surface.  
> Can only switch when a Dive Main screen is displayed.  
> Cannot switch while on the surface.  
> Cannot access the Switch Menu or perform a switch during the sounding of alarms.  
> If an alarm strikes while in the Switch Menu, the Switch operation is terminated reverting to the Main.  
TMT SWITCH MENU, information includes (Fig. 111):  
M (< 2 sec), while a Dive Main is displayed - to access the Switch Menu, if 2 or more TMTs are set for use.  
Fig. 111 - TMT SWITCH MENU  
> Graphic Goto.  
> Graphic selections TMT 1, TMT 2, TMT 3, TMT 4 with OFF/ON settings.  
The Arrow icon ( > ) next to the TMT in use.  
A (< 2 sec) - to step forward (down) through the selections.  
M (< 2 sec) - to step back (up) through the selections.  
S (< 2 sec) - to access the Switch To screen for the TMT indicated by Arrow icon ( > ). No access is provided if OFF.  
Fig. 112 - GAUG DV 3 MAIN  
(Run Timer set OFF)  
TMT SWITCH TO, information includes (Fig. 112):  
> Graphics SWITCH TO TMT 1 (or 2, 3, 4).  
> Tank Pressure for that TMT with PSI (or BAR) and Link icons.  
• S (< 2 sec) - to initiate a Switch from the TMT in use to the TMT indicated,  
> After 2 seconds, a TMT Search screen (Fig. 113A) will appear for 10 seconds, then revert to the Main with the new TMT  
selected.  
> If the TMT is not reporting, a message will be displayed for 10 seconds (Fig. 113B) and the Switch will be canceled.  
Fig. 113A - TMT SEARCH  
Fig. 113B - TMT NOT  
REPORTING  
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OCi OPERATING MANUAL  
FREE DIVE  
&
TECH FREE DIVE  
OP MODES  
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OCi OPERATING MANUAL  
OVERVIEW  
FREE Mode and TECH FREE Mode are similar in many respects and share various functions such as settings. However, they have specific differences to be  
considered prior to commencing activities in the selected mode. Listed here are several.  
FREE DIVE MODE (for dives to 330 FT/100 M)  
> Performs calculations relating to nitrogen-oxygen which carryover between NORM and FREE.  
> Allows FREE diving activities before and after SCUBA activities.  
> Allows unrestricted use of operating buttons during dives for control of the Backlight and Timers.  
> Features 3 Depth Alarms set for progressively deeper depths.  
TECH FREE DIVE MODE (for dives to 495 FT/150 M)  
> Requires a 24 hour post dive period before SCUBA activities can be conducted.  
> Use of operating buttons during dives for control of the Backlight and Timers is limited to less than 330 FT/100 M.  
> Features 6 Depth Alarms with independently adjusted audibles that operate during both descent and ascent.  
> Features Auto Glo that turns the Backlight ON for the entire dive upon descent. Note that this reduces battery life significantly.  
> Allows setting the Sampling Rate at which data is recorded for subsequent download to the Oceanlog PC program.  
FREE & TECH FREE  
SURFACE MODE  
S
2s  
S
M
2s  
Compass  
Watch.Mode  
SURF.  
MAIN  
Start/Stop.Timer  
< 2s  
A+S  
2s  
Reset.Dive.#.to.0  
A
2s  
A
.Reset.Timer  
.ALTs  
L
Light  
< 2s  
M
< 2s  
M, S  
2s  
Main.Menu  
S
< 2s  
access  
selection  
> SEL.TIMER  
CDT.SETUP  
LOG/HIST  
A
SET.ALARMS  
< 2s  
SET.UTILITIES  
OP.MODE  
OCi.ID  
S 2 sec to revert  
from Menu  
to SURF Main.  
M
< 2s  
Surface.Mode  
at  
2 FT (0.6 M)  
for 1 sec  
at  
5 FT (1.5 M)  
for 5 sec  
Dive.Mode  
DIVE MODE  
S
2s  
S
M
2s  
Compass  
TMT.Switch.Menu  
DIvE.  
MAIN  
Start/Stop.Timer  
< 2s  
A
2s  
A
.Reset.Timer  
.ALT  
L*  
Light  
< 2s  
*or Auto Glo if ON  
in TECH FREE.  
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OCi OPERATING MANUAL  
FREE & TECH FREE SURF MAIN, information includes (Fig. 114A/B/C):  
> Surface Interval (min:sec up to 59:59, then hr:min) with SURF icon.  
> Graphic FREE or TECH FREE.  
> Graphic TIMERS - OFF, or -  
Graphic RUN TMR with elapsed Run Time (up to 9:59 min:sec), or -  
Graphic CDT with Countdown Time remaining (min:sec).  
> Battery icon, if voltage is low.  
> Graphic DIVE - with number of dives completed during that set of repetitive dives, up to 99 (0 if no dive made yet).  
> TLBG with icon if any nitrogen remaining after NORM or FREE dives in past 24 hours. Blank if TECH FREE.  
Fig. 114A - FREE SURF MAIN  
(no dive yet, Timers OFF)  
• S (2 sec) - to access Compass (which can only be accessed from the Main).  
• A (< 2 sec) - to access ALT 1.  
• M (< 2 sec) - to access the FREE or TECH FREE Main Menu.  
• M (2 sec) - to access Watch Main Time.  
• S (< 2 sec) - to access start/stop the CDT, or Run Timer, if in use.  
• A (2 sec) - to reset the CDT to the value set, or Run Timer to 0:00, if in use.  
• A + S (2 sec) - to reset the Dive # to 0.  
• L (< 2 sec) - to toggle the Backlight On/Off.  
• L (2 sec), while the Backlight is On - to reset the timer and keep it On for the full duration time set.  
Fig. 114B - FREE SURF MAIN  
(post dive, Run Timer running)  
SURF ALT 1 (Last), information includes (Fig. 115):  
> Graphic LAST DIVE, indicating that data is from the dive previously conducted while in FREE or TECH FREE mode.  
> Max Depth with FT (or M) and MAX icons, 2 dashes ( - - ) if no previous dive.  
> Elapsed Dive Time (up to 9:59 min:sec) with graphic EDT, 3 dashes ( - : - - ) if no previous dive.  
• A (< 2 sec) - to access ALT 2.  
• 10 sec - revert to Main, if A is not pressed.  
• L - to operate the Backlight.  
SURF ALT 2, information includes (Fig. 116):  
> Time of Day (hr:min_sec) with A (or P).  
> Altitude graphic, if EL2 (to EL7), blank if Sea level.  
> Temperature with ° icon and graphic F (or C).  
Fig. 114C - TECH FREE  
SURF MAIN  
(post dive, CDT running)  
• A (< 2 sec) - to revert to Main.  
• 10 sec - revert to Main, if A is not pressed.  
• L - to operate the Backlight.  
-----------------------------------------------------------------------------------------------------------------------------------------  
Fig. 115 - SURF ALT 1  
(Last dive's data)  
FREE & TECH FREE MAIN MENU (Fig. 117)  
Button operations:  
• M (< 2 sec) - to access the Menu, while viewing the Surface Main.  
• A (< 2 sec) - to step down (forward) through selections.  
• M (< 2 sec) - to step up (backward) through selections.  
Fig. 116 - SURF ALT 2  
FREE.or  
TECH.FREE  
MAIN.MENU  
• S (< 2 sec) - to access a selection indicated by the pointer icon ( > ).  
• S (2 sec), while viewing the menu - to revert to Surface Main.  
• M (2 sec) any time - to revert to Surface Main.  
SEL.TIMER  
CDT.SETUP  
LOG/HIST  
SET.ALARMS  
SET.UTILITIES  
OP.MODE  
HISTORY  
>
• 2 min (no button action) - will revert to Surface Main.  
Fig. 117 - MAIN MENU  
(sample screen)  
OCi.ID  
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OCi OPERATING MANUAL  
SELECT TIMER, information includes (Fig. 118):  
This function allows a Countdown Timer (CDT) or Run Timer (RUN) to be added to the Surface and Dive Main screens.  
> Graphics SEL (select) and TIMER..  
> Graphics OFF, CDT, and RUN with the Arrow ( > ) icon next to the one previously saved flashing.  
• S (2 sec) - to revert to the Set Utilities Menu.  
• A (< 2 sec) - to step forward (down) through the selections.  
• M (< 2 sec) - to step back (up) through the selections.  
• S (< 2 sec) - to save the selection and revert to the Set Main Menu.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.  
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.  
Fig. 118 - SELECT TIMER  
>> If OFF is selected, the graphics TIMERS - OFF will be displayed on the Surface Main and no graphic or time on the Dive  
Main.  
>> If CDT is selected, the graphic CDT with the countdown time (min:sec) that is set will be displayed on the Surface and  
Dive Mains.  
>> If RUN is selected, the graphic RUN TMR with the elapsed run time (min:sec) will be displayed on the Surface Main and  
the graphic TIMER with the run time (min:sec) will be displayed on the Dive Main.  
CDT (COUNTDOWN TIMER) SETUP, information includes (Fig. 119A) -  
> Countdown Time (min:sec). If OFF, 0:00 or the time previously set. If ON, the time remaining counting down.  
> Graphics CDT SETUP.  
> Graphics OFF, ON, and SET with the Arrow ( > ) icon next to the one previously saved (OFF or ON) flashing.  
• A (< 2 sec) - to step through selections OFF, ON, and SET.  
• S (< 2 sec) - to save the selection.  
• S (2 sec) - to revert to FREE Menu.  
Fig. 119A - CDT SETUP  
(no time set)  
>> If OFF or ON is saved, operation reverts to the Main Menu. ON enables the Timer which can be started/stopped while  
viewing it on the Surface or Dive Main.  
>> If SET is saved, the Minutes digits flash with SET solid (Fig. 119B).  
• S (2 sec) - to step back to SET flashing.  
• A (hold) - to scroll upward through Minute set points at a rate of 8 per second from 0: to 59: in increments of 1: (min).  
• A (< 2 sec) - to step upward through set points one at a time.  
• M (< 2 sec) - to step back through set points one at a time.  
• S (< 2 sec) - to save the Minute setting and flash the Seconds digits.  
Fig. 119B - SET CDT  
(min:sec)  
• S (2 sec) - to step back to the Minutes digits flashing.  
• A (hold) - to scroll upward through Seconds set points at a rate of 8 per second from :00 to :59 in increments of :01 (sec).  
• A (< 2 sec) - to step upward through set points one at a time  
• M (< 2 sec) - to step back through set points one at a time.  
• S (< 2 sec) - to save the CDT setting with SET flashing allowing ON or OFF to be selected.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.  
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.  
Once started, the CDT will run, while on the surface and during dives, until it counts down to 0:00, or it is turned OFF.  
When the Timer counts down to 0:00, the Audible will sound during which time the graphic CDT will be displayed with 0:00  
flashing on the Surface or Dive Main.  
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LOG & HISTORY MODES  
• S (< 2 sec), while > icon is next to LOG/HIST on the FREE or TECH FREE Main Menu, to access the Log/History Menu.  
Sequence: Main Menu >> Log/History Menu >> Day Log >> Full Log >> Day History >> Full History.  
Day and Full Logs display information from the latest 99 FREE and/or TECH FREE dives.  
The difference between the Logs is that the information in Day Log is only retained until a dive is conducted on a new calendar  
day, or the Dive # is reset to #1 (by A+S while viewing the SURF Main) at which time all data is deleted from the Day Log.  
Full Log retains information until it is eventually overwritten due to storage capacity.  
After exceeding 99 dives, the most recent Dive will be recorded in the Full Log while deleting the oldest. It is highly unlikely  
that this will affect the Day Log which will do the same if 99 is exceeded.  
LOG/HISTORY MENU  
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Dives are numbered 1 to 99. Numbering starts at #1 each new calendar day beginning after midnight, or when Reset (by  
A+S while viewing the SURF Main).  
In the event that a dive’s EDT exceeds 9:59 (min:sec), the data at the 9:59 interval will be recorded for the Log and History  
upon surfacing of the unit.  
History records information accumulated during the most recent day and adds that information to a full (all time) record.  
Battery replacement will not to delete Log or History data.  
At any time while in Log or History modes -  
• M (2 sec) at any time, or 2 minutes of no button action, will revert to the Surface Main screen.  
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.  
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.  
DAY (& FULL) LOG DATA 1, information includes (Fig. 120A/B):  
> Graphic LOG.  
> Day Log >> graphic DIVE - xx OF DAY, dive number (up to 99) for that calendar day, or session of the day if reset.  
Full Log >> graphic DIVE - xx OF ALL, dive number (up to 99) of the total number of all dives recorded.  
> Time of Day that the dive began (hr:min) with A (or P) icon.  
> Day of the week & Date the dive was conducted, that it began.  
• A (hold) - to scroll through previous dives' Data 1 screens (4/sec), from the one in view toward oldest, repeat after last.  
• A (< 2 sec) - to step through previous dives' Data 1 screens one at a time.  
• M (< 2 sec) - to step back through previous dives' Data 1 screens one at a time.  
• S (< 2 sec) - to access the Data 2 screen for that same dive.  
Fig. 120A - DAY LOG DATA 1  
• S (2 sec) - to exit and revert to the Log/History Menu.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.  
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.  
DAY LOG DATA 2 (Full Log Data 2 similar), information includes (Fig. 121):  
> Pre dive Surface Interval time (to 59:59 min:sec, then 1:00 to 23:59 hr:min) with SURF icon, dashes ( - : - - ) if Dive # 1.  
> Max Depth with graphics FT (or M) and MAX.  
> Elapsed Dive Time (up to 9:59 min:sec) with graphic EDT.  
Fig. 120B - FULL LOG DATA 1  
> Graphic SEA (or EL2 to EL7), the Altitude level at which the dive was conducted.  
> Temperature with ° icon and graphic F (or C), lowest recorded during the dive.  
• A (hold) - to scroll through previous dives' Data 2 screens (4/sec), from the one in view toward oldest, repeat after last.  
• A (< 2 sec) - to step through previous dives' Data 2 screens one at a time.  
• M (< 2 sec) - to step back through previous dives' Data 2 screens one at a time.  
• S (< 2 sec) - to access the Data 3 screen for that same dive.  
• S (2 sec) - to exit and revert to the Log/History Menu.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.  
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.  
Fig. 121 - DAY LOG DATA 2  
(Full Log Data 2 similar)  
DAY LOG DATA 3, PROFILE (Full Log Data 3 similar)  
The Log 3 screen allows dives to be analyzed on site without use of the PC interface system, showng Depth as it changes while  
EDT is increased or decreased throughout that dive, beginning at descent (0:01 sec).  
During dives, Depth and EDT are recorded every 1 second, beginning 1 second after descent to the Dive Start Depth set and  
ending upon ascent to < 2 FT (0.6 M) for 1 second.  
DAY LOG DATA 3 (Full similar), information includes (Fig. 122):  
> Depth with FT (or M) icon ), 0 upon access.  
> Graphic DEPTH AT >>. This means that the Depth shown is at the Time shown.  
> Elapsed Dive Time (min:sec) with graphic EDT, 0:00 upon access.  
> Graphic PROFILE.  
• A (hold) - to increase EDT at a rate of 8 seconds EDT for each real time second until released, displaying the Depth values  
for each change of the EDT value.  
• A (< 2 sec) - to increase EDT in increments of 1 second for each press/release, displaying the Depth value for each change  
of the EDT value.  
• M (< 2 sec) - to decrease EDT 1 second for each press/release, displaying the Depth value for each change of the EDT  
value.  
• S (< 2 sec) - to revert to the Data 1 screen for that dive.  
• S (2 sec) - to exit and revert to the Log/History Menu.  
Fig. 122 - DAY LOG DATA 3  
(Full Log Data 3 similar)  
• M (2 sec), or 2 min of no button action, - to exit and revert to the Surface Main.  
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.  
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.  
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DAY HISTORY DATA 1, information is to include (Fig. 123):  
> Graphic HiSt.  
> Graphic DIVES = with the total number of dives conducted during that calendar day, or session of the day if reset.  
> Graphic EDT = with the total accumulated Elapsed Dive Time for that day starting at 0:00:01 up to 23:59:59 (hr:min:sec)  
with graphics H M S (meaning Hours, Minutes, Seconds).  
> Graphic DAY and Date (Month.Day or Day.Month) identifying that day.  
• S (< 2 sec) - to access the Day History Data 2 screen.  
• S (2 sec) - to exit and revert to the Log/History Menu.  
• M (2 sec), or 2 min of no button action, - to exit and revert to the Surface Main.  
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.  
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.  
Fig. 123 - DAY HIST DATA 1  
DAY HISTORY DATA 2, information is to include (Fig. 124):  
> Max Depth achieved that day with FT (or M) and MAX icons.  
> Graphics DEEPEST OF DAY, indicating that the information displayed is for the deepest depth recorded that day and the  
Dive Time displayed is associated with that Max Depth.  
> Elapsed Dive Time (min:sec) for that dive, with graphic EDT icon.  
> Graphic DAY and Date (Month.Day or Day.Month) of the dive.  
• S (< 2 sec) - to access the Day History Data 3 screen.  
• S (2 sec) - to exit and revert to the Log/History Menu.  
• M (2 sec), or 2 min of no button action, - to exit and revert to the Surface Main.  
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.  
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.  
Fig. 124 - DAY HIST DATA 2  
Fig. 125 - DAY HIST DATA 3  
Fig. 126 - DAY HIST DATA 4  
DAY HISTORY DATA 3, information is to include (Fig. 125):  
> Max Depth for that dive with FT (or M) and MAX icons.  
> Graphics LONGEST OF DAY, indicating that the information displayed is for the longest Dive Time recorded that day and  
the Max Depth displayed is associated with that Dive Time.  
> Elapsed Dive Time (min:sec) for that dive, with graphic EDT.  
> Graphic DAY and Date (Month.Day or Day.Month) of the dive.  
• S (< 2 sec) - to access the Day History Data 4 screen.  
• S (2 sec) - to exit and revert to the Log/History Menu.  
• M (2 sec), or 2 min of no button action, - to exit and revert to the Surface Main.  
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.  
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.  
DAY HISTORY DATA 4, information is to include (Fig. 126):  
> Max Depth for that dive with FT (or M) and MAX icons.  
> Graphics AVERAGE FOR DAY, indicating that the information displayed represents Averages for all dives conducted during  
that calendar day, or session of the day if reset.  
> Elapsed Dive Time (min:sec) for that dive, with graphic EDT.  
> Graphic DAY and Date (Month.Day or Day.Month) of the dive.  
• S (< 2 sec) - to access the Day History Data 1 screen.  
• S (2 sec) - to exit and revert to the Log/History Menu.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.  
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.  
------------------------------------------------------------------------------------------------------------------------  
FULL HISTORY DATA 1, information is to include (Fig. 127):  
> Graphic HiSt.  
> Graphic DIVES = with the total number of dives ever conducted (up to 9999).  
> Graphic EDT = with the total accumulated Elapsed Dive Time (up to 9999 hours) with graphic HOURS.  
> Graphic TOTALS.  
• S (< 2 sec) - to access the Full History Data 2 screen.  
• S (2 sec) - to exit and revert to the Log/History Menu.  
• M (2 sec), or 2 min of no button action, - to exit and revert to the Surface Main.  
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.  
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.  
Fig. 127 - FULL HIST DATA 1  
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FULL HISTORY DATA 2, information is to include (Fig. 128):  
> Max Depth with FT (or M) and MAX icons.  
> Graphics DEEPEST EVER,indicating that the information displayed is for the deepest Max Depth ever recorded and the  
Elapsed Dive Time is associated with that Max Depth.  
> Elapsed Dive Time (min:sec) for that dive with graphic EDT.  
• S (< 2 sec) - to access the Full History Data 3 screen.  
• S (2 sec) - to exit and revert to the Log/History Menu.  
• M (2 sec), or 2 min of no button action, - to exit and revert to the Surface Main.  
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.  
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.  
Fig. 128 - FULL HIST DATA 2  
FULL HISTORY DATA 3, information is to include (Fig. 129):  
> Max Depth with FT (or M) and MAX icons.  
> Graphics LONGEST EVER, indicating that the information displayed is for the longest Elapsed Dive Time ever recorded and  
the Max Depth displayed is associated with that Dive Time.  
> Elapsed Dive Time (min:sec) with graphic EDT.  
• S (< 2 sec) - to access the Full History Data 4 screen.  
• S (2 sec) - to exit and revert to the Log/History Menu.  
• M (2 sec), or 2 min of no button action, - to exit and revert to the Surface Main.  
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.  
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.  
Fig. 129 - FULL HIST DATA 3  
FULL HISTORY DATA 4, information is to include (Fig. 130):  
> Max Depth with FT (or M) and MAX icons, the average of all Max Depths ever recorded.  
> Graphics AVERAGE FOR ALL, indicating that the information displayed represents Averages.  
> Elapsed Dive Time (min:sec) with graphic EDT, the average EDT of all dives ever recorded.  
> The average number of dives conducted each day (up to 99) with the graphic divE.  
• S (< 2 sec) - to access the Full History Data 1 screen.  
• S (2 sec) - to exit and revert to the Log/History Menu.  
• M (2 sec), or 2 min of no button action, - to exit and revert to the Surface Main.  
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.  
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.  
Fig. 130 - FULL HIST DATA 4  
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SET ALARMS MENU - FREE & TECH FREE MODES  
FREE Menu selections >> Audible* >> SRT* >> RTI* >> RDI* >> DD1 >> DD2 >> DD3.  
TECH FREE Menu selections >> Audible* >> SRT* >> RTI* >> RDI* >> DA1 >> DA2 >> DA3 >> DA4 >> DA5 >> DA6.  
*FREE and TECH FREE share these alarms. Settings made when in one mode can be changed while in the other mode..  
Due to space limitations, settings are viewed by accessing individual alarm Set screens.  
Fig. 131 - MAIN MENU  
(to access Set Alarms)  
• S (< 2 sec) - to access the Menu while the pointer icon ( > ) is next to SET ALARMS on the Main Menu (Fig. 131).  
• A (< 2 sec) - to step down (forward) through selections.  
• M (< 2 sec) - to step up (back) through selections.  
• S (< 2 sec) - to access the selection indicated by the pointer icon ( > ). Example, to access Set Audible (Fig. 132).  
Fig. 132 - SET ALARMS MENU  
(to access Set Audible)  
SET AUDIBLE ALARM, information includes (Fig. 133):  
> Graphics AUD ALARM.  
> Graphics OFF and ON, last one saved flashing.  
• S (2 sec) - to revert to the Set Alarms Menu without changing the setting.  
• A or M (< 2 sec) - to toggle between OFF and ON.  
• S (< 2 sec) - to save the setting and revert to the Set Alarms Menu.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
Setting the Audible OFF disables sounding during all alerts while operating in FREE or TECH FREE modes. It does not affect  
any alarms that strike while operating in NORM or GAUG SCUBA modes.  
Fig. 133 - SET AUDIBLE  
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SET SRT (SURFACE RECOVERY TIME) ALARM, information includes (Fig. 134):  
> Surface Interval (recovery) Time (min:sec) with SURF icon.  
> Graphics RECOV TIME ALARM and SRT.  
> Graphics OFF, ON, and SET; last saved (OFF or ON) flashing upon access.  
• S (2 sec) - to step back to the Set Alarms Menu without changing the setting.  
• A (< 2 sec) - to step forward (down) through the selections of OFF, ON, SET.  
• M (< 2 sec) - to step back (up) through the selections.  
• S (< 2 sec) - to save the selection.  
Fig. 134 - SET SRT ALARM  
> If OFF or ON is selected, operation will revert to the Set Alarms Menu.  
> If SET is selected, the Minute digits will flash.  
• S (2 sec) - to step back to SET flashing.  
• A (hold) - to scroll upward through the Minute set points 8/sec from 0: to 30: in increments of 1: (1 minute).  
• A (< 2 sec) - to step upward through the Minute set points one at a time.  
• M (< 2 sec) - to step back through the Minute set points one at a time.  
• S (< 2 sec) - to save the Minute setting and flash the Seconds digits.  
• S (2 sec) - to step back to the Minutes digits flashing.  
• A (hold) - to scroll upward through the Second set points 8/sec from :00* to :59 in increments of :01 (1 second).  
*Starts at :01 (sec) minimum when Minutes are set for 0: (min).  
• A (< 2 sec) - to step upward through the Second set points one at a time.  
• M (< 2 sec) - to step back through the Second set points one at a time.  
• S (< 2 sec) - to save the SRT setting (digits solid) and flash the graphic SET allowing ON or OFF to be selected/saved.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
SET RTI (REPEATING TIME INTERVAL) ALARM, information includes (Fig. 135):  
> Time Interval (min:sec).  
> Graphics REPET TIME ALARM and RTI.  
> Graphics OFF, ON, and SET; last saved (OFF or ON) flashing upon access.  
• A (< 2 sec) - to step forward (down) through the selections of OFF, ON, SET.  
• M (< 2 sec) - to step back (up) through the selections.  
• S (2 sec) - to step back to the Set Alarms Menu.  
• S (< 2 sec) - to save the setting.  
Fig. 135 - SET RTI ALARM  
> If OFF or ON is selected, operation will revert to the Set Alarms Menu.  
> If SET is selected, the Minute digits will flash.  
• S (2 sec) - to step back to SET flashing.  
• A (< 2 sec) - to step upward through the Minute set points one at a time from 0: to 9: in increments of 1: (1 minute).  
• M (< 2 sec) - to step back through the Minute set points one at a time.  
• S (< 2 sec) - to save the Minute setting and flash the Seconds digits.  
• S (2 sec) - to step back to the Minutes digits flashing.  
• A (hold) - to scroll upward through the Second set points 8/sec from :00* to :59 in increments of :01 (1 second).  
*Starts at :10 (sec) minimum when Minutes are set for 0: (min).  
• A (< 2 sec) - to step upward through the Second set points one at a time.  
• M (< 2 sec) - to step back through the Second set points one at a time.  
• S (< 2 sec) - to save the RTI setting (digits solid) and flash the graphic SET allowing ON or OFF to be selected/saved.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
SET RDI (REPEATING DEPTH INTERVAL) ALARM, information includes (Fig. 136):  
> Depth Interval with FT (or M) icon.  
> Graphics REPET DEPTH ALARM and RDI.  
> Graphics OFF, ON, and SET; last saved (OFF or ON) flashing upon access.  
• A (< 2 sec) - to step forward (down) through the selections of OFF, ON, SET.  
• M (< 2 sec) - to step back (up) through the selections.  
• S (2 sec) - to step back to Set RTI Alarm.  
• S (< 2 sec) - to save the selection.  
Fig. 136 - SET RDI ALARM  
> If OFF or ON is selected, operation will revert to the Set Alarms Menu.  
> If SET is selected, the Minute digits will flash.  
• S (2 sec) - to step back to SET flashing.  
• A (hold) - to scroll upward through the Depth set points 8/sec from 10 to 100 FT (3 to 33 M) in increments of 1 FT (1 M).  
• A (< 2 sec) - to step upward through the Depth set points one at a time.  
• M (< 2 sec) - to step back through the Depth set points one at a time.  
• S (< 2 sec) - to save the setting and flash the graphic SET allowing ON or OFF to be selected/saved.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
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DD ALARMS (FREE Mode only)  
There are 3 Descending Depth alarms (DD1 - DD3) that can be set only at progressively deeper depths. DD2 values must be set  
deeper than DD1 and DD3 values must be set deeper than DD2.  
SET DD1 ALARM, information includes (Fig. 137):  
> Depth with FT (or M) icon.  
> Graphics DEPTH ALARM 1 and DD1.  
> Graphics OFF, ON, and SET; last saved (OFF or ON) flashing upon access.  
• A (< 2 sec) - to step forward (down) through the selections of OFF, ON, SET.  
• M (< 2 sec) - to step back (up) through the selections.  
• S (2 sec) - to step back to the Set Alarms Menu.  
• S (< 2 sec) - to save the selection.  
Fig. 137 - SET DD ALARM  
> If OFF or ON is saved, operation will revert to the Set Alarms Menu.  
> If SET is saved, the Depth digits will flash.  
• S (2 sec) - to step back to SET flashing.  
• A (hold) - to scroll upward through the Depth set points 16/sec from 30 to 330 FT (3 to 100 M) in increments of 1 FT (1 M).  
• A (< 2 sec) - to step upward through the Depth set points one at a time.  
• M (< 2 sec) - to step back through the Depth set points one at a time.  
• S (< 2 sec) - to save the setting and flash the graphic SET allowing ON or OFF to be selected/saved.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
SET DD2 & DD3 ALARMS, similar to Set DD1 Alarm.  
> If DD2 is not set for a Depth that is deeper than DD1 and you attempt to turn DD2 ON, a message (Fig. 138) will be  
displayed for 5 seconds and operation will revert to the FREE Set Alarms Menu. DD3 is similar.  
Fig. 138 - SET DD MESSAGE  
-------------------------------------------------------  
DA ALARMS (TECH FREE Mode only)  
There are 6 Descending/Ascending Depth alarms (DA1 - DA6) that can be set without restrictions. They operate without restric-  
tions during ascents as well as during descents. Each alarm sounds for the number of beeps set and sets of beeps set when the  
depth set is reached during descents and/or ascents.  
SET DA1 DEPTH ALARM, information includes (Fig. 139A):  
> Depth with FT (or M) icon.  
> Graphics DEPTH ALARM 1 and DA1.  
> Graphics OFF, ON, and SET; last saved (OFF or ON) flashing upon access.  
• A (< 2 sec) - to step forward (down) through the selections of OFF, ON, SET.  
• M (< 2 sec) - to step back (up) through the selections.  
• S (2 sec) - to step back to the Set Alarms Menu.  
• S (< 2 sec) - to save the selection.  
Fig. 139A - SET DA DEPTH  
> If OFF or ON is selected, operation will revert to the Set Alarms Menu.  
> If SET is selected, the Depth digits will flash.  
• S (2 sec) - to step back to SET flashing.  
• A (hold) - to scroll upward through the Depth set points 16/sec from 10 to 495 FT (3 to 150 M) in increments of 1 FT (1 M).  
• A (< 2 sec) - to step upward through the Depth set points one at a time.  
• M (< 2 sec) - to step back through the Depth set points one at a time.  
• S (< 2 sec) - to save the setting and display the Set DA1 Audible screen.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
SET DA1 AUDIBLE ALARM, information includes (Fig. 139B):  
> Depth set with FT (or M) icon.  
> Graphic BEEPS - with the number of beeps (1 to 10), flashing upon access.  
> Graphic TIMES - with the number of times the beeps are to repeat (1, 2, or 3).  
> Graphics DA1 and Aud.  
• S (2 sec) - to step back to the Set Depth screen with the Depth digits flashing.  
• A (< 2 sec) - to step upward through the Beep set points from 1 to 10 one at a time.  
• M (< 2 sec) - to step back through the Beep set points one at a time.  
• S (< 2 sec) - to save the Beep setting and flash the Times digit.  
• S (2 sec) - to step back to the Beep digits flashing.  
Fig. 139B - SET DA AUDIBLE  
• A (< 2 sec) - to step upward through the Times set points from 1 to 3 one at a time.  
• M (< 2 sec) - to step back through the Times set points one at a time.  
• S (< 2 sec) - to save the Audible Beep/Times setting and revert to the Set Depth Alarm screen with the graphic SET flashing  
allowing ON or OFF to be selected/saved.  
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.  
SET DA2 to DA6 ALARMS, similar to Set DA1 Depth and Audible Alarm.  
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SET UTILITIES MENU - FREE & TECH FREE MODES  
FREE Menu selections >> Water Type* >> Wet Activation* >> Units* >> Glo Duration* >> DSD* >> BDSI*.  
TECH FREE Menu selections >> Water Type* >> Wet Activation* >> Units* >> Glo Duration* >> Auto Glo >> Sampling Rate  
>> DSD* >> BDSI*.  
*FREE and TECH FREE share these alarms. Settings made when in one mode can be changed while in the other mode..  
Due to space limitations, settings are viewed by accessing individual alarm Set screens.  
Fig. 140 - MAIN MENU  
(to access Set Utilities)  
• S (< 2 sec) - to access the Menu while the pointer icon ( > ) is next to SET UTILITIES on the Main Menu (Fig. 140).  
• A (< 2 sec) - to step down (forward) through selections.  
• M (< 2 sec) - to step up (back) through selections.  
• S (< 2 sec) - to access the selection indicated by the pointer icon ( > ). Example, to access Water Type (Fig. 141).  
The Water Type selection adjusts Depth calibration to accomodate activities in fresh or sea/salt water.  
The Wet Activation feature allows you (before any dives are made) to disable activation of Dive Mode during activities when you  
may be using Watch features not involved with diving.  
Fig. 141 - SET UTILITIES MENU  
(to access Set Water Type)  
Glo Duration determines how long the Backlight will be On when activated by pressing the L button.  
When Auto Glo is set On (in TECH FREE only), the Backlight will activate automatically upon entry into Dive Mode and remain  
On until the BDSI time (up to 1 min) elapses after surfacing. L button operation of the Backlight will be disabled during the dive,  
then enabled on the surface.  
Sampling Rate (set in TECH FREE only, fixed rate in FREE) determines the interval at which data is sampled and recorded for  
upload to the PC Interface program. It does not affect the rate at which data is measured for the display (which is at a fixed rate  
of 1 second).  
The DSD (Dive Start Depth) feature allows you to select the Depth at which Dive Mode will be activated upon descent. Regard-  
less of the DSD set, every dive ends upon ascent above 2 FT (0.6 M) for the BDSI set.  
The BDSI (Between Dive Surface Interval) feature allows you to select the time interval between surfacing and descending that  
determines whether the descent is a new dive. Short intervals may be preferred for some activities and longer intervals for others,  
thus a selection may be helpful.  
At any time while entering settings -  
• M (2 sec), or 2 minutes of no button action, - to revert to the Surface Main.  
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.  
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.  
SET WATER TYPE, same as NORM/GAUG - refer to page 24.  
SET WET ACTIVATION, same as NORM/GAUG - refer to page 24.  
SET UNITS, same as NORM/GAUG - refer to page 24.  
SET BACKLIGHT DURATION, same as NORM/GAUG - refer to page 25.  
SET AUTO GLO (TECH FREE only), information includes (Fig. 142):  
> Graphics AUTO GLO.  
> Graphics OFF and ON, last saved flashing upon access.  
• A or M (< 2 sec) - to toggle between OFF and ON.  
• S (2 sec) - to step back to the Set Utilities Menu without changing the setting.  
• S (< 2 sec) - to save the setting and revert to the Set Utilities Menu.  
Fig. 142 - SET AUTO GLO  
(TECH FREE only)  
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SET SAMPLING RATE (TECH FREE only), information includes (Fig. 143):  
> Graphics PC SAMPLE RATE.  
> Graphics ON and SET, with ON flashing upon access. There is no OFF setting for this feature.  
> Graphic SEC with Time (seconds).  
• A or M (< 2 sec) - to toggle between ON and SET.  
• S (2 sec) - to step back to the Set Utilities Menu without changing the setting.  
• S (< 2 sec) - to save the selection.  
Fig. 143 - SET SAMPLING  
(TECH FREE only)  
> If ON is selected, operation will revert to the Set Utilities Menu.  
> If SET is selected, the time digits will flash.  
• S (2 sec) - to step back to SET flashing.  
• A (< 2 sec) - to step through the time set points 0.25, 0.50, 1.00, 2.00 (seconds) one at a time.  
• M (< 2 sec) - to step back through the set points one at a time.  
• S (< 2 sec) - to save the setting and flash the graphic SET allowing ON to be selected/saved.  
SET DSD (DIVE START DEPTH), information includes (Fig. 144):  
> Depth with FT (or M) icon.  
> Graphics DIVE START DEPTH and DSD.  
> Graphics ON and SET, with ON flashing upon access. There is no OFF setting for this feature.  
• A or M (< 2 sec) - to toggle between ON and SET.  
• S (2 sec) - to step back to the Set Utilities Menu.  
• S (< 2 sec) - to save the selection.  
Fig. 144 - SET DSD  
> If ON is selected, operation will revert to the Set Utilities Menu.  
> If SET is selected, the Depth digits will flash.  
• S (2 sec) - to step back to SET flashing.  
• A (< 2 sec) to step upward through the set points of 2, 4, 6 FT (0.6, 1.2, 1.8 M) one at a time.  
• M (< 2 sec) to step back through set points one at a time.  
• S (< 2 sec) - to save the setting and flash the graphic SET allowing ON to be selected/saved.  
SET BDSI (BETWEEN DIVE SURFACE INTERVAL), information includes (Fig. 145):  
> Graphics DIVE SURF INTVL and BDSI.  
> Time (min:sec) with SURF icon.  
> Graphics ON and SET; with ON flashing upon access.  
• A or M (< 2 sec) - to toggle between ON and SET.  
• S (2 sec) - to step back to the Set Utilities Menu.  
• S (< 2 sec) - to save the selection.  
> If ON is selected, operation will revert to the Set Utilities Menu.  
> If SET is selected, the Time digits will flash.  
Fig. 145 - SET BDSI  
• S (2 sec) - to step back to SET flashing.  
• A (hold) to scroll upward through the set points 8/sec from 0:01 to 1:00 (min:sec) in increments of :01 (1 second).  
• A (< 2 sec) to step upward through the set points one at a time.  
• M (< 2 sec) to step back through set points one at a time.  
• S (< 2 sec) - to save the setting and flash the graphic SET allowing ON to be selected/saved.  
-----------------------------------------------------------------------------------------------------------  
SELECT OP (OPERATING) MODE, same as NORM/GAUG - refer to page 26.  
OCi ID (SERIAL NUMBER), same as NORM/GAUG - refer to page 27.  
---------------------------------------------------------------------------------------------------------  
---------------------------------------------------------------------------------------------------------  
Upon descent to the DSD (Dive Start Depth) set for 5 seconds, operation will enter Dive Mode.  
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OCi OPERATING MANUAL  
FREE & TECH FREE DIVE MODES  
Prior to the first dive of a new series, if Wet Activation is set Off, the unit will not activate FREE or TECH FREE Dive mode during  
operation in any Watch mode. It must be in FREE or TECH FREE mode prior to activating Dive mode.  
If Wet Activation is set On, Dive Mode will activate from any operating FREE or TECH FREE Surface mode including Watch  
modes once it senses the DSD (Dive Start Depth) set for 5 seconds.  
Once a dive is completed, operation will enter Dive Mode upon subsequent descent, regardless of what Surface mode it is in.  
Dives start upon descent to the DSD (Dive Start Depth) set (2, 4, or 6 FT; or 0.6, 1.2, or 1.8 M) for 1 second and end upon  
ascent to < 2 FT (0.6 M)* for the BDSI (Between Dive Surface Interval) time set. Thus, descending before the BDSI time elapses  
will be the same dive and descending at => the BDSI will be a new repetitive dive.  
Fig. 146A - FREE DIVE MAIN  
(CDT in use))  
*Upon ascent to < 2 FT (0.6 M), the Surface Main screen will be displayed.  
When Alarms strike, the Backlight will come On, if Off, and remain On until it turns Off automatically after 10 seconds. If it is  
already On, it will remain On for 10 seconds from the time an Alarm strikes.  
If Auto Glo is set On (TECH FREE only), the Backlight will activate upon descent to the DSD (Dive Start Depth) set and remain On  
until you surface and the BDSI (Between Dive Surface Interval) time set has elapsed.  
Fig. 146B - FREE DIVE MAIN  
(Run Timer in use)  
FREE DIVE MAIN, information includes (Fig. 146A/B/C) -  
> Current Depth with FT (or M) icon.  
> Graphic CDT with remaining Countdown Time (min:sec), 0:00 if reset or the countdown is complete; or -  
Graphic TIMER with Run Time (min:sec) counting up, 0:00 if reset or not started; or -  
blank if the Timers are set Off.  
> Graphic EDT with Elapsed Dive Time (up to 9:59 min:sec).  
> Graphic NDC - with No Deco Time Remaining (hr:min).  
> Temperature with ° icon and graphic F (or C).  
> TLBG with icon, if any nitrogen loading from FREE or NORM dives conducted within the last 24 hours.  
Fig. 146C - FREE DIVE MAIN  
(Timers OFF)  
• A (< 2 sec) - to access ALT.  
• A (2 sec) - to reset the CDT (to the min:sec set) or Run Timer to 0:00.  
• S (< 2 sec) - to start/stop CDT or Run Timer.  
• S (2 sec) - to access the Compass.  
• L (< 2 sec) - to toggle the Backlight On/Off.  
• L (2 sec), while the Backlight is On, - to reset the timer and keep it On for the full duration time set.  
TECH FREE DIVE MAIN, information includes (Fig. 147A/B/C) -  
> Current Depth with FT (or M) icon.  
> Graphic CDT with remaining Countdown Time (min:sec), 0:00 if reset or the countdown is complete; or -  
Graphic TIMER with Run Time (min:sec) counting up, 0:00 if reset or not started; or -  
blank if the Timers are set Off.  
Fig. 147A - TECH FREE DIVE  
MAIN (CDT in use)  
> Graphic EDT with Elapsed Dive Time (up to 9:59 min:sec).  
> Temperature with ° icon and graphic F (or C).  
It is to be understood that the buttons may not be functional at depths > 330 FT (100 M).  
• A (< 2 sec) - to access ALT.  
• A (2 sec) - to reset the CDT (to the min:sec set) or Run Timer (to 0:00 min:sec).  
• S (< 2 sec) - to start/stop CDT or Run Timer.  
Fig. 147B - TECH FREE DIVE  
MAIN (Run Timer in use)  
• S (2 sec) - to access the Compass.  
• L* (< 2 sec) - to toggle the Backlight On/Off.  
• L* (2 sec), while the Backlight is On, - to reset the timer and keep it On for the full duration time set.  
*L has no affect if Auto Glo is set On.  
FREE & TECH FREE DIVE ALT, information includes (Fig. 148) -  
> Max Depth with FT (or M) and MAX icons.  
> Time of Day (hr:min_sec), with A (or P) if 12 Hour.  
Fig. 147C - TECH FREE DIVE  
MAIN (Timers OFF)  
• A or M (< 2 sec) - to revert to Main.  
• Revert to the Main after 10 seconds, if A or M is not pressed.  
• L (< 2 sec) - to toggle the Backlight On/Off.  
• L (2 sec), while the Backlight is On - to reset the timer and keep it On for the duration time set.  
Fig. 148 - FREE DIVE ALT  
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FREE & TECH FREE DIVE ALARMS  
When Alarms sound, the LED will flash. Also, the Backlight will come On (if Off) for 10 seconds, and a flashing icon or message  
will be displayed as an indication that an event is occurring and as a reminder to view the display to identify the event.  
When the Audible stops, the LED will extinguish and the message will clear.  
If the Audible is set OFF, it will not sound and the LED will not flash for any cautionary situation. Any icons or messages associ-  
ated with the condition will still flash, and the Backlight will still come On.  
Fig. 149 - SURF CDT AL  
SURFACE CDT (COUNTDOWN TIMER) ALARM (Fig. 149)  
When the CDT reaches 0:00 (min:sec), the Audible will sound 3 sets of (3) .500 second beeps during which 0:00 will flash on  
the Surface Main then remain on solid.  
SURFACE SRT (SURFACE RECOVERY TIME) ALARM (Fig. 150)  
When Surface Recovery Time reaches the post dive surface interval time set (min:sec), the Audible will sound 3 sets of (3) .500  
second beeps during which the graphic SRT will be displayed with the Surface Interval Time flashing on the Surface Main.  
DIVE CDT (COUNTDOWN TIMER) ALARM (Fig. 151)  
When the CDT reaches 0:00 (min:sec), the Audible will sound 3 sets of (3) .500 second beeps during which 0:00 will flash on  
the Dive Main then remain on solid.  
Fig. 150 - SURF SRT AL  
Fig. 151 - DIVE CDT AL  
Fig. 152 - DIVE RTI AL  
Fig. 153 - DIVE RDI AL  
Fig. 154 - FREE DD AL  
DIVE RTI (REPEATING TIME INTERVAL) ALARM (Fig. 152)  
Each time the Elapsed Dive Time (EDT) reaches the Repeating Time Interval set, the Audible will sound (2) 1 second beeps during  
which the graphic RTI will be displayed with the EDT digits flashing on the Dive Main, repeating after another time interval.  
DIVE RDI (REPEATING DEPTH INTERVAL) ALARM (Fig. 153)  
Each time Depth reaches the Interval set, the Audible will sound 3 sets of (3) .500 second beeps during which the graphic RDI  
will be displayed with the Depth digits flashing, repeating after another depth interval. The alarm will sound even for descents  
made after ascents to shallower depths are made. RDI will not sound at the DD or DA depths set.  
FREE DIVE DEPTH (DD1 to DD3) ALARMS (Fig. 154)  
When an alarm Depth is reached during descent, the Audible will sound 3 sets of (3) .125 second beeps during which the gra-  
phic DD1 (DD2, DD3) will be displayed with the Depth digits flashing on the Dive Main.  
TECH FREE DIVE DEPTH (DA1 to DA6) ALARMS (Fig. 155)  
When an alarm Depth is attained, during descent and/or ascent, the Audible will sound 1, 2, or 3 sets of (1 to 10) .125 second  
beeps (as set) during which the graphic DA1 (DA2 to DA6) will be displayed with the Depth digits flashing on the Dive Main.  
FREE DIVE HIGH NITROGEN ALARMS  
When nitrogen increases to the caution level (4 TLBG segments), the Audible will sound 3 sets of (3) .500 second  
beeps during which the TLBG segments will flash on the Main (Fig. 156).  
If nitrogen continues to increase and reaches the Deco level (all 5 TLBG segments), the Audible will sound again  
during which TLBG segments will flash, and NDC will be displayed as 0:00 (Fig. 157A).  
When the Audible is silenced, the TLBG, NDC, and EDT are removed, replaced with the graphics VIOLATION  
and UP with Up Arrows flashing until on the surface (Fig. 157B) for the BDSI set.  
After 1 minute on the surface, the graphic VIOL alternates with FREE and dive computer operation locks into FREE  
Mode for 24 hours. Access to Watch and Compass will be as usual.  
Fig. 157B - FREE VIOLATION  
(after Aud)  
Fig. 156 - FREE TLBG AL  
Fig. 157A - FREE VIOLATION  
(entry into Deco, during Aud)  
Fig. 155 - TECH FREE DD AL  
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ADDITIONAL INFORMATION PERTAINING TO FREE DIVE MODES  
Although breathing apparatus is not utilized for FREE Dive activities, nitrogen tissue loading remains a factor. Nitrogen loading,  
which is utilized while in FREE mode, is calculated based upon a fixed FO2 of AIR.  
Since a user has the option of alternating between NORM (SCUBA) and FREE dive activities within a 24 hour period, nitrogen  
calculations and the displayed value of No Deco Dive Time Remaining (NDC Time) are carried over between the NORM and FREE  
operating modes, which permits the user to maintain awareness of nitrogen absorption and offgasing status.  
The mathematical models currently used in the OCi are based on no decompression/decompression multilevel repetitive  
dive schedules. These algorithms do not take into account the physiological changes associated with the high pressures that  
competitive type Free diving can expose a diver to.  
WARNINGS  
Ensure that you know which Operating Mode is selected (NORM, GAUG, FREE, or TECH FREE) prior to commencing any dive.  
Conducting Free dives within a 24 hour period after conducting SCUBA dives, combined with the effects of multiple rapid Free  
Dive ascents, increases your risk of decompression sickness. Such activities may result in accelerated entry into decompression  
which could cause serious injury or death.  
Combining competitive type Free dive activities that involve multiple descents/ascents with activities utilizing SCUBA during the  
same 24 hour period is not recommended. Presently, there is no data relating to such activities.  
It is highly recommended that anyone planning to become involved in competitive type Free dive activities obtain proper  
instruction and training from a recognized Free Diving trainer. It is imperative that the physiological affects be understood and  
the diver is physically prepared.  
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OCi OPERATING MANUAL  
COMPASS  
MODE  
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OCi OPERATING MANUAL  
COMPASS ICONS  
Diver’s  
Direction of  
Travel  
Turn Left  
Turn Right  
Tilt  
North OP  
Mode  
or  
Heading  
Degrees  
Reference  
OP Mode  
dynamic North or  
Ref Heading set  
COMPASS MODE SURFACE  
rotate (level)  
REF.MENU  
S
2s  
Set Ref  
Heading  
Surface  
Main  
S
S
A
< 2s  
S
Lock  
COMP  
OP.  
MAIN  
SET  
>
save,  
Bearing  
< 2s  
< 2s  
< 2s  
back to  
S
S
S
Reverse  
Heading  
2 min  
L
Confirm  
Reverse  
REvERSE  
OP Main  
< 2s  
< 2s  
< 2s  
display OP Main  
with new Heading  
flashing  
Light  
A
< 2s  
- - - - - - - - - - - -  
< 2 s - On/Off.  
2 s - reset timer.  
On - during Aud.  
Off - by timer.  
M
< 2s  
M
2s  
back to  
OP Main  
Battery  
Change  
MAIN.MENU  
S
< 2s  
save, display  
as OP Main  
NORTH.MODE  
>
A
< 2s  
DATA  
S
< 2s  
A < 2s  
(toggle)  
DATA SAVED*  
S
< 2s  
save, display  
as OP Main  
SAVE  
CLEAR  
>
REF.MODE.  
CALIbRATE  
CAL COMPASS  
*or CLEARED  
3 sec  
M
< 2s  
3 sec  
CAL  
READY*  
S
< 2s  
S
< 2s  
after  
complete  
Progress  
(circle)  
CAL  
Rotate 360  
If OK, revert to Comp OP Main.  
If not, back to CAL Rotate.  
*or FAILED  
rotate  
360 level  
ready to  
start  
SET.  
DECLIN  
S
< 2s  
S
< 2s  
save, back to Compass Menu  
SET.DECLIN  
>
OFF  
S
< 2s  
S
< 2s  
Set  
save, back to Set Menu  
save, back to Set Menu  
EAST  
WEST  
0 to + 45°  
S
< 2s  
S
< 2s  
Set  
0 to - 45°  
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OCi OPERATING MANUAL  
OVERVIEW  
> S (2 sec) - to access the Compass OP (operating) Main from the Watch, Surface, or Dive Main.  
> S (2 sec) or no button action (2 min*) - to revert to the Watch, Surface, or Dive Main.  
*During the final 15 seconds, the remaining On time is displayed. If a button is pressed during that time, the 2 minute On  
time will reset allowing operation to continue in Compass Mode for another full 2 minutes.  
> The Compass OP Mode selected (North, Reference) remains until changed.  
> Reference OP Mode is used to set a course, also to Reverse the course set by 180°  
actual  
heading  
> Numeric values are displayed as 3 digits (000 to 360°), have a resolution of 001°, and an accuracy of +/- 005°.  
> Operation will be normal and display of values will be within specified tolerances up to a 20° tilt.  
Fig. 158 - NORTH OP MODE  
Upon accessing the Compass, the OP (operating) Main of the last mode selected will be displayed >> North Mode (Fig. 158),  
Reference Mode (Fig. 159), or Reverse Reference Mode (Fig. 160).  
course  
set  
To access the Compass Menu, when viewing the OP Main while on the surface, press M (< 2 sec).  
COMPASS MENU, information includes (Fig. 161):  
> Graphic Goto, with selections >>  
On time  
remaining  
> NORTH MODE - to select as the Operating Mode with no set heading.  
> REF MODE - to select as the Operating Mode allowing a heading to be set.  
> CALIBRATE - to access a Calibration start screen.  
Fig. 159 - REF OP MODE  
Fig. 160 - REVERSE REF  
Fig. 161 - COMPASS MENU  
> SET DECLIN - to access to Declination Set Menu.  
180° opposite  
course set  
• A (< 2 sec) - to step forward (down) through selections.  
• M (< 2 sec) - to step back (up) through selections  
• S (< 2 sec) - to select the item indicated by the pointer ( > ) icon.  
If NORTH or REF MODE is selected, that mode will be saved and its OP Main will be displayed.  
• S (2 sec), while viewing the Menu - to revert to the Compass OP Main.  
• M (2 sec), at any time, except while in Calibration - to revert to the Compass OP Main.  
• No button action (2 min) - revert to Watch, Surface, or Dive Main.  
• L (< 2 sec) - to toggle the Backlight On/Off.  
• L (2 sec), while the Backlight is On - to reset the timer and keep it On for the duration time set.  
NORTH OP MAIN, information includes (Fig. 162):  
> Current Depth with FT (or M) icon, blank on surface.  
> North Mode icon (letter N in box).  
> Static Arrow icon (at 12 o'clock), diver direction of travel.  
> Dynamic (moving) Arrow, relative direction of magnetic North.  
> Tilt icon*, when the Compass is at an angle => 20° off level.  
> Numeric heading (diver's current direction), 001 to 360°, with position graphic (N, E, SE, etc.). *Blank when the Tilt icon  
is displayed.  
> On time remaining, counting down, if 15" to 01" ( " means seconds). Blank when > 15 seconds.  
• M (< 2 sec) - to access the Compass Main Menu, surface only.  
• S (2 sec) or 2 minutes of no button action - will revert to the Watch, Surface, or Dive Main.  
• L (< 2 sec) - to toggle the Backlight On/Off.  
• L (2 sec), while the Backlight is On - to reset the timer and keep it On for the duration time set.  
REFERENCE OP MAIN, information includes (Fig. 163):  
Fig. 162 - NORTH OP MAIN  
(at 050°)  
> Current Depth with FT (or M) icon, during dive mode, 00 during first 10 min on surface, blank on surface > 10 min.  
> Reference Mode icon (2 bars with arrow) with numeric Reference heading (course) set above it.  
> Static Arrow icon (at 12 o'clock), diver direction of travel.  
> Turn Arrow icon (left or right) flashing during any time the diver deviates => 10° off the heading set.  
> Dynamic (moving) Arrow, tracking the Reference direction set.  
> Tilt icon*, when the Compass is at an angle => 20° off level.  
> Numeric heading (diver's current direction), 001 to 360°, with position graphic (N, E, SE, etc.). *Blank when the Tilt icon is  
displayed.  
> On time remaining, counting down, if 15" to 1". Blank when > 15 seconds.  
• M (< 2 sec) - to access the Compass Main Menu, surface only.  
• A (< 2 sec) - to access the Reference Menu, surface or dive.  
Fig. 163 - REF OP MAIN  
(at 110°, turn right to 150°)  
• S (2 sec) or 2 minutes of no button action - will revert to the Watch, Surface, or Dive Main.  
• L (< 2 sec) - to toggle the Backlight On/Off.  
• L (2 sec), while the Backlight is On - to reset the timer and keep it On for the duration time set.  
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REFERENCE MENU, information includes (Fig. 164):  
> Graphic SEL, with selections >>  
> SET HEADING - To access Set Reference Heading..  
> REVERSE - To access Reverse Heading (to change the Reference Heading set by 180°).  
> On time remaining, counting down, if 15 to 0 (sec).  
• S (2 sec) - to step back to the Compass OP Main.  
• A or M (< 2 sec) - to toggle between the selections.  
• S (< 2 sec) - to select that item.  
• M (2 sec), at any time - to revert to the Compass OP Main.  
• L (< 2 sec) - to toggle the Backlight On/Off.  
Fig. 164 - REF MENU  
• L (2 sec), while the Backlight is On - to reset the timer and keep it On for the duration time set.  
SET REFERENCE HEADING, information includes (Fig. 165):  
> Current Depth with FT (or M) icon, blank on the surface.  
> Reference Mode icon (2 bars with up arrow), with the graphic SET above it (flashing upon access).  
> Static Arrow icon (at 12 o'clock), diver direction of travel.  
> Dynamic (moving) Arrow, tracking Reference direction currently set.  
> Numeric heading (diver's direction) at lower/right with position graphic.  
> On time remaining, counting down, if 15 to 0 (sec).  
Fig. 165 - SET REFERENCE  
HEADING  
• S (2 sec) - to step back to the Reference Menu.  
• S (< 2 sec) - to flash the numeric Heading value (lower/right), with SET solid.  
• Rotate the Compass (keeping it level) in either direction to the new Heading, numeric displayed at the lower/right.  
• S (< 2 sec) - to lock in the new Heading, with the numeric replacing the graphic SET.  
• M (2 sec), at any time - to revert to the Compass OP Main.  
• L (< 2 sec) - to toggle the Backlight On/Off.  
• L (2 sec), while the Backlight is On - to reset the timer and keep it On for the duration time set.  
REVERSE REF HEADING, information includes (Fig. 166):  
> Current Depth with FT (or M) icon, blank on the surface.  
Fig. 166 - REVERSE REF  
HEADING  
> Reverse Mode icon (2 bars with down arrow) with the reverse Heading (180° opposite of the Reference Heading set) above  
it, flashing.  
> Static Arrow icon (at 12 o'clock), diver direction of travel.  
> Dynamic (moving) Arrow, tracking the Reference direction currently set.  
> Numeric heading (diver's direction) at lower/right, with position graphic.  
> On time remaining, counting down, if 15 to 0 (sec).  
• S (2 sec) - to step back to the Reference Menu.  
• S (< 2 sec) - to reverse and save the new Reverse Heading, numeric solid, and revert to the Reverse OP Main.  
The value at the lower/right will then indicate actual current direction.  
Fig. 167 - START CAL  
• M (2 sec), at any time - to revert to the Compass OP Main.  
• L (< 2 sec) - to toggle the Backlight On/Off.  
• L (2 sec), while the Backlight is On - to reset the timer and keep it On for the duration time set.  
CALIBRATION (surface only)  
Local magnetic fields can effect display of actual location when reading a digital compass. It may be advantageous to Calibrate  
the Compass before its first use after purchase, prior to use in a new region, or if inaccuracies are experienced. Calibration will  
be required when the battery is changed.  
Upon selecting Calibrate on the Compass Main Menu, a Start screen* is displayed, information includes (Fig. 167) -  
Fig. 168 - PROGRESS  
(turn until full circle)  
> Graphics CAL and ROTATE TO CALIBRATE.  
> 360 with ° icon.  
*The Start screen will also be displayed after the Battery is changed and Data is either saved or cleared.  
• S (< 2 sec) - to activate (start) Calibration.  
• S (2 sec) - to step back to the Compass Main Menu.  
• Slowly and steadily rotate the unit 360° in either direction while maintaining it in a flat level position (keeping it level is  
critical for acurracy), CAL progress will be displayed by a dotted circle forming in the center of the screen (Fig. 168).  
Fig. 169A - CAL PASSED  
Rotation should take about 30 seconds. If not fully rotated in 60 seconds, operation will revert to the Compass Main Menu.  
Upon completion, the graphics CAL with PASSED READY or AGAIN FAILED will flash for 3 seconds (Fig. 169A/B), then -  
>> If READY, operation will reverts to the Compass OP Main.  
>> If FAILED, operation will revert to the Start (CAL ROTATE) screen for repeat. After 3 attempts, operation will revert to the  
Watch or Surface Main and the previous successful Calibration will remain in effect.  
Fig. 169B - CAL FAILED  
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OCi OPERATING MANUAL  
DECLINATION  
Magnetic Declination is taken from numbers provided on maps or charts that apply to a specific location. The numbers represent  
the easterly or westerly angular difference (Declination) in degrees between magnetic North and true (geometric or polar) North.  
A Compass will point to magnetic North unless its reference is adjusted to true North prior to conducting activities.  
Upon selecting SET DECLIN on the Compass Main Menu, a Declination Menu is displayed, information includes (Fig. 170) -  
> Graphic SEL, with selections -  
> DECLIN OFF.  
> DECLIN EAST.  
Fig. 170 - DECLIN MENU  
> DECLIN WEST.  
• A (< 2 sec) - to step forward (down) through the selections.  
• M (< 2 sec) - to step back (up) through the selections.  
• S (2 sec) - to step back to the Compass Main Menu.  
• S (< 2 sec) - to select the item indicated by the pointer ( > ) icon.  
> If OFF is selected, Declination is set for 0° and operation reverts to the Compass Main Menu.  
> If DECLIN EAST (or WEST) is selected, the Set Declination screen is accessed displaying the graphics SEt and DECLIN EAST  
+ (or WEST - ) with the Declination value flashing (Fig. 171).  
Fig. 171 - SET DECLINATION  
• S (2 sec) - to step back to the Set Declination Menu.  
• A (hold) - to scroll upward through set points at a rate of 4/sec from 0 to 45° in increments of 1°.  
• A (< 2 sec) - to increase set points one at a time.  
• M (< 2 sec) - to step back through set points one at a time.  
• S (< 2 sec) - to save the set point and revert to the Set Declination Menu.  
• M (2 sec), at any time - to revert to the Compass OP Main.  
• L (< 2 sec) - to toggle the Backlight On/Off.  
• L (2 sec), while the Backlight is On - to reset the timer and keep it On for the duration time set.  
ALARMS  
When most Alarms strike, operation in Compass Mode will be terminated and the Dive Main will be displayed describing the  
alarm condition. Compass Mode can then be reentered by pressing S (2 sec).  
During several types of alarms, indication will be given while remaining in Compass Mode without interuption. They are -  
Fig. 172 - ASCENT ALARM  
Ascent Alarm (Fig. 172) -  
> VARI, all segments flashing until slowed.  
Depth Alarm (Fig. 173) -  
> Depth digits flash until shallower than the alarm depth set.  
Fig. 173 - DEPTH ALARM  
WARNING  
You must become thoroughly familiar with setup and operation of the OCi Digital  
Compass before using it as your primary device for navigation. Failure to do so  
could result in serious errors relating to activities involving navigation.  
> Practice on land before use in water.  
> Practice on the surface before use underwater.  
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OCi OPERATING MANUAL  
REFERENCE  
CAUTION: When the procedure provided in this section is  
used to change the Battery, you must be sure that the case  
o-ring is not pinched and that the OCi is water tight before  
conducting diving activities. Pre dive pressure testing by an  
Authorized Oceanic facility is highly recommended.  
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OCi OPERATING MANUAL  
a
PC INTERFACE (OCEANLOG, DIVERLOG)  
The Settings Upload portion of the PC Interface (PCI) program can be used to set/change Time, Alarms, and Utilities using the  
Interface System. The Set Gas group (FO2, PO2 alarms) must be entered using the OCi's button controls.  
Information available for retrieval (download) from the OCi to the PC program includes items such as dive number, SI, max  
depth, EDT, start date/time, start/end presure, lowest temperature, sampling rate, dive profile, set points, and events.  
Prior to attempting to download data from your OCi or upload settings to it, review the Help section of the PCI program. Recom-  
mended is to print those sections of Help that you consider appropriate for your Interface activities.  
Fig. 174 - PC DATA PORT  
A USB Driver is provided on the Oceanic CD which must be installed on your PC prior to use of the Interface System.  
dot  
The OCi is configured with a Data Port located on the side (Fig. 174a) that enables it to be connected to a PC USB port using the  
special Interface Cable.  
To connect the PCI Cable to the OCi:  
> position the connector with the red dot at 12 o'clock.  
> align the pins of the cable connector with the holes in the data port and press the connector into the port (Fig. 175).  
> turn the connector clockwise until the red dot is at 1 o'clock and it locks in (Fig. 176), then release it.  
The OCi checks for an external access request every second while Watch Main Time is displayed.  
Checks are not to be made if the activation contacts are wet.  
Fig. 175 - PCI CABLE  
(insert with dot at 12 o'clock)  
dot  
For a connection to be made, the Oceanlog or Diverlog program is to be installed on the PC or Mac and open, the associated  
USB Driver is to be installed, and the interface cable is to be plugged into the PC or Mac USB Port, then connected to the OCi’s  
Data Port.  
When a wakeup connection is established, the graphics PC or MAC COMM and 120 SECONDS are to be displayed in place of  
the Watch Main and remain on the display counting down from 120 to 00 seconds during which time an Upload or Download  
operation can be initiated.  
When the operation is initiated using the PC or Mac program, the graphic changes to PC or MAC COMM CONNECTED which  
remains on until completion of the upload/download operation, then the Watch Main is displayed and the cable disconnected.  
Fig. 176 - PCI CABLE  
(turned, dot at 1 o'clock)  
Oceanlog or Diverlog will also to accomodate upload of select releases of firmware (DC operating software) to the OCi using the  
same PC or Mac Interface program and cable. The graphic PROGRAM LOADING is displayed during the process.  
PC requirements:  
• IBM , or compatible, PC with USB Port  
• Intel®® Pentium 4 or better microprocessor  
TIMER  
(counting down)  
• Microsoft® Windows® XP, Vista, 7, or 8  
• Super VGA card or compatible video graphics adaptor (256 color or greater) with a minimum 800 X 600 pixel screen  
area of display settings  
• 128MB of available RAM  
• 64MB of available hard drive storage  
• Mouse  
• CD Rom drive  
• Printer  
PCI CABLE  
(connection sensed)  
Mac requirements:  
• Mac with USB Port  
• OSX 10.5 or later  
• Super VGA card or compatible video graphics adaptor (256 color or greater) with a minimum 800 X 600 pixel screen  
area of display settings  
• 128MB of available RAM  
• 64MB of available hard drive storage  
• Mouse  
• Printer  
FIRMWARE UPDATE  
(until complete)  
• Internet connection to download App from the Apple App Store  
For software updates, refer to the Oceanic web site at -  
www.OceanicWorldwide.com  
For support, call Oceanic Customer Service toll free at -  
(866) 732-7877, 8 Am to 5 Pm USA Pacific time.  
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OCi OPERATING MANUAL  
b
a
CARE AND CLEANING  
Protect your OCi from shock, excessive temperatures, exposure to chemicals, and tampering. Protect the lens against scratches  
with a Instrument Lens Protector. Small scratches will naturally disappear underwater.  
• Soak and rinse the OCi in fresh water at the end of each day of diving, and check to ensure that the areas around the Low  
Pressure (Depth) Sensor (Fig. 177a), PC Interface Data Port (Fig. 177b), and Buttons are free of debris or obstructions.  
• To dissolve salt crystals, use lukewarm water or a slightly acidic bath (50% white vinegar/50% fresh water). After removal  
from the bath, place the OCi under gently running fresh water and towel dry before storing.  
• Transport your OCi cool, dry, and protected.  
Fig. 177 - FRONT  
INSPECTIONS AND SERVICE  
Your OCi should be inspected annually by an Authorized Oceanic Dealer who will perform a factory prescribed function check  
and inspection for damage or wear. To keep the 2 year limited warranty in effect, this inspection must be completed one year  
after purchase (+/- 30 days).  
Oceanic recommends that you continue to have an inspection performed every year to ensure it is working properly. The costs of  
annual inspections, or inspections relating to water tight integrity, are not covered under the terms of the 2 year limited warranty.  
To Obtain Service:  
Take your OCi to an Authorized Oceanic Dealer or send it to the nearest Oceanic Regional Facility.  
To return your OCi to Oceanic:  
• Record all dive data in the Log and/or download the data stored in memory. All data will be erased during factory service.  
• Package it using a protective cushioning material.  
• Include a legible note stating the specific reason for return, your name, address, daytime phone number, serial number(s),  
and a copy of your original sales receipt and Warranty Registration Card.  
• Send freight prepaid and insured using a traceable method to the nearest Oceanic Regional Facility, or to Oceanic USA.  
• If shipping to Oceanic USA, obtain an RA (Return Authorization) number by contacting Oceanic at 510-562-0500 x761 or  
800-435-3483 x 761, or send an e-mail to [email protected].  
• Non-warranty service must be prepaid. COD is not accepted.  
• Additional information is available at the Oceanic web site www.oceanicworldwide.com  
BATTERY REPLACEMENT  
CAUTION: The procedures that follow must be closely adhered to avoid entrance of water into the  
unit. Damage due to improper Battery replacement (or subsequent leakage of moisture into the unit)  
is not covered by the OCi's 2 year warranty.  
NOTE: The OCi can be sent to Oceanic Worldwide, Regional Distributor, or Authorized Dealer Service  
for proper battery change service which includes pressure (depth) and leak testing to the max operat-  
ing depth. Standard charges for service will apply  
The Battery Compartment should only be opened in a dry and clean environment with extreme care taken to prevent the entrance  
of moisture or dust.  
Fig. 178 - CASE BACK  
As an additional precautionary measure to prevent formation of moisture in the Battery Compartment, it is recommended that the  
Battery be changed in an environment equivalent to the local outdoor temperature and humidity (e.g., do not change the Battery  
in an air conditioned environment then take it outside during a hot sunny day).  
Inspect the Buttons, Lens, and Housing to ensure they are not cracked or damaged. If there is any sign of moisture in the OCi,  
DO NOT attempt to use it for diving (NORM, GAUG, or FREE) until it receives proper service by the Oceanic factory or an  
Authorized Regional Distributor.  
Fig. 179A - TO LOOSEN  
BATTERY COVER  
Data Retention  
When the battery is removed, settings and nitrogen/oxygen calculations for repetitive dives will be retained in volatile memory  
until a new battery is installed. You will have the choice of saving or deleting the data. The Compass will need to be calibrated  
after the new battery is installed.  
All parts needed for the battery change that follows are provided in the OCi Battery Kit available from your Oceanic Dealer.  
Fig. 179B - LIFTING  
BATTERY COVER OFF  
Battery Removal  
• There is no need to remove the straps.  
• Remove the (4) retaining screws located on the back of the case (Fig. 178) by turning them counter clockwise with a small  
flat tip 3mm screw driver.  
• Carefully separate the front and back sections. If necessary, insert a small flat tip screw driver in the slot machined into the  
Cover at the 11 o'clock position (Fig. 179A) and gently pry the Battery Cover loose, then lift it off the case (Fig. 179B).  
• Turn the case to one side to drop the Battery into your hand. If necessary, gently loosen it with the tip of your finger (Fig.  
180). DO NOT use tools to pry it out, or short the positive (+) top of the Battery to the negative ( - ) contact under it.  
• Discard the Battery according to local regulations governing disposal of Lithium batteries.  
Fig. 180 - BATTERY  
REMOVAL  
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OCi OPERATING MANUAL  
Inspection  
a
• Closely check all of the sealing surfaces for any signs of damage that might impair proper sealing.  
• Inspect the buttons, lens, and housing to ensure they are not cracked or damaged.  
WARNING: If damage or corrosion is found, return your OCi to an Authorized Oceanic Dealer, and DO  
NOT attempt to use it until it has received factory prescribed service.  
• Remove the cover O-ring by squeezing the sides (Fig. 181a). Discard, and do not attempt to reuse it.  
> It is located around the top rim of the cover.  
> DO NOT use tools to remove the O-ring.  
> To ensure proper sealing, O-ring replacement is required each time the Battery is replaced.  
Fig. 181 - SQUEEZING  
COVER O-RING  
Battery Installation  
• Very lightly lubricate the new O-ring with silicone grease and place it on the top rim of the cover.  
• Place a new 3 volt type CR2450 Lithium Battery, negative side down into the Battery cavity and ensure that it is evenly  
positioned (Fig. 182).  
• Carefully position the Battery Cover over the battery compartment. Use the OCi logo as a guide for top/bottom. Also,  
small symbols have been engraved on the top of the Cover and strap to serve as a guide for proper alignment (Fig. 183a).  
• While ensuring that the cover and back of the case are properly aligned, firmly press them evenly and completely together.  
• While holding the Battery Cover firmly in position agaonst the back of the case (Fig. 184), insert the (4) retaining screws  
and tighten them until secure by turning them clockwise with a small flat tip 3mm screw driver. DO NOT over tighten.  
Fig. 182 - INSTALLING  
BATTERY  
a
Testing  
> Activate the unit and ensure that the LCD is clear and sharp in contrast. If any portions are missing or appear dim, or if a  
Low Battery condition is indicated, return the OCi to an Authorized Oceanic Dealer for evaluation before use.  
> During 24 hours after completion of a dive, the graphics SEL and DATA with selections SAVE ? and CLEAR ? will be  
displayed (Fig. 185) giving you the option to retain or delete Ni-O2 calculations for repetitive dives.  
• A (< 2 sec) to toggle between SAVE and CLEAR  
• S (< 2 sec) to save the selection  
Fig. 183 - BATTERY COVER  
ALIGNMENT  
> Graphics DATA SAVED (or CLEARED) with CAL COMPASS appear for 3 seconds (Fig. 186), then operation reverts to the  
Compass CAL screen.  
> Calibrate the Compass.  
> Verify all set points prior to diving.  
Fig. 184 - PRESSING  
FRONT & BACK TOGETHER  
Fig. 185 - SELECT  
ALTITUDE SENSING AND ADJUSTMENT  
Prior to the first dive of a series of repetitive dives, Altitude (i.e., ambient pressure) is measured upon activation of Dive Surface  
Mode and every 15 minutes until a dive is made or operation reverts to Watch Mode.  
> While it is operating in Watch modes after a dive, measurements are taken every 15 minutes during the 24 hour period  
after surfacing.  
> Measurements are only taken when the unit is dry.  
Fig. 186 - DATA SAVED  
> Two readings are taken, the second reading 5 seconds after the first. The readings must be within 1 foot (30 cm) of each  
other to record that ambient pressure as the current Altitude.  
> No adjustments are made during any time that the Wet Contacts are bridged.  
When diving in high altitude waters from 3,001 to 14,000 feet (916 to 4,270 meters), the OCi automatically adjusts to these  
conditions providing corrected Depth, and reduced No Deco and O2 Times at intervals of 1,000 feet (305 meters).  
At an elevation of 3,001 feet (916 meters), Depth calibration automatically changes from feet of seawater to feet of fresh water.  
This is the first adjustment to the algorithm.  
When the Conservative Factor feature is set On, NDLs are calculated based upon the next higher 3,000 foot (915 meter) Alti-  
tude. All adjustments for Altitudes greater than 11,000 feet (3,355 meters) are then made to allowable dive times for 14,000  
feet (4,270 meters). At Sea Level, calculations are based upon an Altitude of 6,000 feet.  
The OCi will not function as a Dive Computer above 14,000 feet (4,270 meters).  
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OCi OPERATING MANUAL  
TECHNICAL  
DATA  
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OCi OPERATING MANUAL  
Z+ ALGORITHM >> NDLS (HR:MIN) AT ALTITUDE (IMPERIAL)  
Altitude  
(feet)  
0
3001  
to  
4000  
4001  
to  
5000  
5001  
to  
6000  
6001  
to  
7000  
7001  
to  
8000  
8001  
to  
9000  
9001  
to  
10000  
10001  
to  
11000  
11001  
to  
12000  
12001  
to  
13000  
13001  
to  
14000  
to  
3000  
Depth  
( FT )  
30  
3:17  
1:49  
1:05  
0:48  
0:35  
0:26  
0:19  
0:16  
0:12  
0:10  
0:08  
0:07  
0:06  
0:06  
0:05  
0:05  
0:04  
2:30  
1:21  
0:53  
0:37  
0:26  
0:19  
0:15  
0:11  
0:09  
0:08  
0:07  
0:06  
0:05  
0:05  
0:04  
0:04  
0:04  
2:21  
1:15  
0:51  
0:35  
0:24  
0:18  
0:14  
0:10  
0:08  
0:07  
0:06  
0:05  
0:05  
0:05  
0:04  
0:04  
0:04  
2:14  
1:11  
0:49  
0:33  
0:23  
0:17  
0:13  
0:10  
0:08  
0:07  
0:06  
0:05  
0:05  
0:04  
0:04  
0:04  
0:03  
2:08  
1:08  
0:47  
0:32  
0:21  
0:16  
0:12  
0:09  
0:08  
0:07  
0:06  
0:05  
0:05  
0:04  
0:04  
0:03  
0:03  
2:02  
1:05  
0:44  
0:30  
0:20  
0:15  
0:11  
0:09  
0:07  
0:06  
0:05  
0:05  
0:04  
0:04  
0:04  
0:03  
0:03  
1:57  
1:02  
0:42  
0:28  
0:19  
0:14  
0:10  
0:08  
0:07  
0:06  
0:05  
0:05  
0:04  
0:04  
0:03  
0:03  
0:03  
1:52  
1:00  
0:39  
0:26  
0:18  
0:13  
0:10  
0:08  
0:07  
0:06  
0:05  
0:04  
0:04  
0:04  
0:03  
0:03  
0:03  
1:47  
0:57  
0:37  
0:24  
0:17  
0:12  
0:09  
0:07  
0:06  
0:05  
0:05  
0:04  
0:04  
0:04  
0:03  
0:03  
0:03  
1:39  
0:55  
0:35  
0:23  
0:16  
0:11  
0:09  
0:07  
0:06  
0:05  
0:05  
0:04  
0:04  
0:03  
0:03  
0:03  
0:03  
1:34  
0:53  
0:34  
0:22  
0:16  
0:11  
0:08  
0:07  
0:06  
0:05  
0:04  
0:04  
0:04  
0:03  
0:03  
0:03  
0:03  
1:29  
0:51  
0:33  
0:21  
0:14  
0:10  
0:08  
0:07  
0:05  
0:05  
0:04  
0:04  
0:03  
0:03  
0:03  
0:03  
0:00  
40  
50  
60  
70  
80  
90  
100  
110  
120  
130  
140  
150  
160  
170  
180  
190  
Z+ ALGORITHM >> NDLS (HR:MIN) AT ALTITUDE (METRIC)  
Altitude  
(meters)  
0
916  
to  
1220  
1221  
to  
1525  
1526  
to  
1830  
1831  
to  
2135  
2136  
to  
2440  
2441  
to  
2745  
2746  
to  
3050  
3051  
to  
3355  
3356  
to  
3660  
3661  
to  
3965  
3966  
to  
4270  
to  
915  
Depth  
( M )  
9
3:37  
1:55  
1:08  
0:50  
0:36  
0:27  
0:20  
0:16  
0:13  
0:10  
0:09  
0:08  
0:06  
0:06  
0:05  
0:05  
0:05  
2:41  
1:27  
0:55  
0:39  
0:28  
0:20  
0:16  
0:12  
0:09  
0:08  
0:07  
0:06  
0:05  
0:05  
0:04  
0:04  
0:04  
2:31  
1:21  
0:53  
0:37  
0:26  
0:19  
0:15  
0:11  
0:09  
0:07  
0:06  
0:06  
0:05  
0:05  
0:04  
0:04  
0:04  
2:23  
1:15  
0:51  
0:35  
0:24  
0:18  
0:13  
0:10  
0:08  
0:07  
0:06  
0:05  
0:05  
0:04  
0:04  
0:04  
0:03  
2:16  
1:12  
0:49  
0:33  
0:23  
0:17  
0:12  
0:09  
0:08  
0:07  
0:06  
0:05  
0:05  
0:04  
0:04  
0:04  
0:03  
2:10  
1:08  
0:47  
0:32  
0:21  
0:16  
0:11  
0:09  
0:07  
0:06  
0:06  
0:05  
0:04  
0:04  
0:04  
0:03  
0:03  
2:04  
1:05  
0:44  
0:30  
0:20  
0:15  
0:11  
0:09  
0:07  
0:06  
0:05  
0:05  
0:04  
0:04  
0:04  
0:03  
0:03  
1:59  
1:03  
0:42  
0:28  
0:19  
0:14  
0:10  
0:08  
0:07  
0:06  
0:05  
0:05  
0:04  
0:04  
0:03  
0:03  
0:03  
1:54  
1:00  
0:39  
0:26  
0:18  
0:13  
0:09  
0:08  
0:07  
0:05  
0:05  
0:04  
0:04  
0:04  
0:03  
0:03  
0:03  
1:50  
0:58  
0:37  
0:24  
0:17  
0:12  
0:09  
0:07  
0:06  
0:05  
0:05  
0:04  
0:04  
0:03  
0:03  
0:03  
0:03  
1:43  
0:55  
0:36  
0:23  
0:16  
0:11  
0:09  
0:07  
0:06  
0:05  
0:05  
0:04  
0:04  
0:03  
0:03  
0:03  
0:03  
1:37  
0:54  
0:34  
0:22  
0:16  
0:11  
0:08  
0:07  
0:06  
0:05  
0:04  
0:04  
0:04  
0:03  
0:03  
0:03  
0:03  
12  
15  
18  
21  
24  
27  
30  
33  
36  
39  
42  
45  
48  
51  
54  
57  
DSAT ALGORITHM >> NDLS (HR:MIN) AT ALTITUDE (IMPERIAL)  
Altitude  
(feet)  
0
3001  
4001  
to  
5000  
5001  
to  
6000  
6001  
to  
7000  
7001  
to  
8000  
8001  
to  
9000  
9001  
to  
10000  
10001  
to  
11000  
11001  
to  
12000  
12001  
to  
13000  
13001  
to  
14000  
to  
to  
3000  
4000  
Depth  
( FT )  
30  
4:20  
2:17  
1:21  
0:57  
0:40  
0:30  
0:24  
0:19  
0:16  
0:13  
0:11  
0:09  
0:08  
0:07  
0:07  
0:06  
0:05  
3:21  
1:43  
1:03  
0:43  
0:31  
0:24  
0:19  
0:15  
0:12  
0:09  
0:08  
0:07  
0:06  
0:06  
0:05  
0:05  
0:04  
3:07  
1:36  
1:00  
0:40  
0:30  
0:23  
0:18  
0:14  
0:11  
0:09  
0:08  
0:07  
0:06  
0:05  
0:05  
0:05  
0:04  
2:55  
1:30  
0:58  
0:38  
0:28  
0:21  
0:17  
0:13  
0:10  
0:08  
0:07  
0:06  
0:06  
0:05  
0:05  
0:04  
0:04  
2:45  
1:25  
0:55  
0:36  
0:27  
0:20  
0:16  
0:12  
0:09  
0:08  
0:07  
0:06  
0:05  
0:05  
0:04  
0:04  
0:04  
2:36  
1:20  
0:52  
0:34  
0:26  
0:19  
0:15  
0:11  
0:09  
0:08  
0:07  
0:06  
0:05  
0:05  
0:04  
0:04  
0:04  
2:28  
1:16  
0:48  
0:33  
0:24  
0:18  
0:14  
0:10  
0:08  
0:07  
0:06  
0:06  
0:05  
0:05  
0:04  
0:04  
0:04  
2:21  
1:12  
0:45  
0:31  
0:23  
0:17  
0:13  
0:10  
0:08  
0:07  
0:06  
0:05  
0:05  
0:04  
0:04  
0:04  
0:03  
2:15  
1:09  
0:43  
0:30  
0:22  
0:16  
0:12  
0:09  
0:08  
0:07  
0:06  
0:05  
0:05  
0:04  
0:04  
0:04  
0:03  
2:10  
1:06  
0:41  
0:29  
0:20  
0:16  
0:11  
0:09  
0:07  
0:06  
0:06  
0:05  
0:04  
0:04  
0:04  
0:03  
0:03  
2:04  
1:03  
0:39  
0:28  
0:19  
0:14  
0:10  
0:08  
0:07  
0:06  
0:05  
0:05  
0:04  
0:04  
0:04  
0:03  
0:03  
1:58  
1:01  
0:37  
0:27  
0:18  
0:13  
0:10  
0:08  
0:07  
0:06  
0:05  
0:05  
0:04  
0:04  
0:03  
0:03  
0:03  
40  
50  
60  
70  
80  
90  
100  
110  
120  
130  
140  
150  
160  
170  
180  
190  
DSAT ALGORITHM >> NDLS (HR:MIN) AT ALTITUDE (METRIC)  
Altitude  
0
916  
to  
1220  
1221  
to  
1525  
1526  
to  
1830  
1831  
to  
2135  
2136  
to  
2440  
2441  
to  
2745  
2746  
to  
3050  
3051  
to  
3355  
3356  
to  
3660  
3661  
to  
3965  
3966  
to  
4270  
(meters) to  
915  
Depth  
( M )  
9
4:43  
2:24  
1:25  
0:59  
0:41  
0:32  
0:25  
0:20  
0:17  
0:14  
0:11  
0:09  
0:08  
0:07  
0:06  
0:06  
0:05  
3:37  
1:52  
1:06  
0:45  
0:33  
0:26  
0:19  
0:16  
0:12  
0:10  
0:08  
0:07  
0:06  
0:06  
0:05  
0:05  
0:04  
3:24  
1:44  
1:03  
0:42  
0:31  
0:24  
0:18  
0:15  
0:11  
0:09  
0:08  
0:07  
0:06  
0:06  
0:05  
0:05  
0:04  
3:10  
1:37  
1:00  
0:40  
0:29  
0:22  
0:17  
0:13  
0:11  
0:09  
0:07  
0:07  
0:06  
0:05  
0:05  
0:04  
0:04  
2:58  
1:30  
0:57  
0:38  
0:28  
0:21  
0:16  
0:12  
0:10  
0:08  
0:07  
0:06  
0:06  
0:05  
0:05  
0:04  
0:04  
2:48  
1:25  
0:55  
0:36  
0:27  
0:20  
0:16  
0:12  
0:09  
0:08  
0:07  
0:06  
0:05  
0:05  
0:04  
0:04  
0:04  
2:39  
1:21  
0:52  
0:34  
0:26  
0:19  
0:14  
0:11  
0:09  
0:07  
0:06  
0:06  
0:05  
0:05  
0:04  
0:04  
0:04  
2:31  
1:17  
0:49  
0:32  
0:24  
0:18  
0:13  
0:10  
0:08  
0:07  
0:06  
0:05  
0:05  
0:04  
0:04  
0:04  
0:03  
2:24  
1:13  
0:46  
0:31  
0:23  
0:17  
0:12  
0:10  
0:08  
0:07  
0:06  
0:05  
0:05  
0:04  
0:04  
0:04  
0:03  
2:18  
1:10  
0:43  
0:30  
0:21  
0:16  
0:12  
0:09  
0:08  
0:06  
0:06  
0:05  
0:05  
0:04  
0:04  
0:03  
0:03  
2:12  
1:07  
0:41  
0:29  
0:20  
0:15  
0:11  
0:09  
0:07  
0:06  
0:05  
0:05  
0:04  
0:04  
0:04  
0:03  
0:03  
2:07  
1:04  
0:39  
0:28  
0:19  
0:14  
0:10  
0:08  
0:07  
0:06  
0:05  
0:05  
0:04  
0:04  
0:04  
0:03  
0:03  
12  
15  
18  
21  
24  
27  
30  
33  
36  
39  
42  
45  
48  
51  
54  
57  
© 2002 Design, 2013  
Doc. No. 12-5335-r01 (6/27/13)  
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OCi OPERATING MANUAL  
SPECIFICATIONS  
CAN BE USED AS  
• Watch  
• Dive Computer (Air or Nitrox)  
• Digital Depth Gauge/Timer  
• Free Dive activity  
• Compass  
DIVE COMPUTER PERFORMANCE  
• Buhlmann ZHL-16c based PZ+, or DSAT based, algorithm  
• No Deco limits closely follow PADI RDP  
• Decompression in agreement with Buhlmann ZHL-16c and French MN90  
• No Deco Deep Stops - Morroni, Bennett  
• Deco Deep Stops (not recommended) - Blatteau, Gerth, Gutvik  
• Altitude - Buhlmann, IANTD, RDP (Cross)  
• Altitude corrections and O2 limits based on NOAA tables  
OPERATIONAL PERFORMANCE  
Function:  
• Depth  
• Timers  
Accuracy:  
1% of full scale  
1 second per day  
Dive Mode Activation:  
•
•
•
•
Must be in Dive Computer mode, if Wet Activation is set OFF.  
Automatic by immersion in water, if Wet Activation is set ON.  
Cannot be manually activated deeper than 5 FT (1.5 M), if Wet Activation is set OFF.  
Cannot operate as a DC at elevations higher than 14,000 feet (4,270 meters)  
Dive Counter:  
• NORM/GAUG display Dives #1 to 24, FREE/TECH FREE display #1 to 99 (0 if no dive made yet)  
• Resets to Dive #1, upon diving (after 24 hours with no dives)  
Dive Log Mode:  
• Stores 24 most recent NORM/GAUG dives in memory for viewing  
• After 24 dives, adds 25th dive in memory and deletes the older dive  
Altitude:  
• Operational from sea level to 14,000 feet (4,270 meters) elevation  
• Measures ambient pressure every 30 minutes in Watch Mode, when Dive Computer Mode is accessed, and every 15 minutes while in Surface Modes.  
• Does not measure ambient pressure when wet.  
• Compensates for altitudes above sea level beginning at 3,001 feet (916 meters) elevation and every 1,000 feet (305 meters) higher.  
Power:  
• Battery  
(1) 3 vdc, CR2450, Lithium battery (Panasonic or equivalent)  
Up to 7 years (when shipped from factory in Deep Sleep mode)  
User replaceable (annual recommended)  
• Shelf life  
• Replacement  
• Use Life  
1 year or 300 dive hours if (2) 1 hour dives per dive day  
Battery Icon:  
• Warning >> icon on solid when <= 2.75 volts, Battery change recommended  
• Alarm >> icon on flashing when <= 2.50 volts, change the Battery, will not function as a DC  
Operating Temperature:  
• Out of the water >> between 20 °F and 140 °F ( - 6 and 60 °C).  
• In storage case provided >> between 14 °F and 158 °F ( - 8 and 70 °C).  
• In the water >> between 28 °F and 95 °F (- 2 and 35 °C).  
© 2002 Design, 2013  
Doc. No. 12-5335-r01 (6/27/13)  
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OCi OPERATING MANUAL  
SPECIFICATIONS (CONTINUED)  
BAR GRAPHS  
TLBG  
segments  
O2BG  
segments  
• No Deco Normal zone  
• No Deco Caution zone  
• Decompression zone  
3
1
1
• Normal zone  
• Caution zone  
• Danger zone  
3
1
1
VARI  
60 FT (18 M) & Shallower  
Deeper than 60 FT (18 M)  
segments  
FPM  
MPM  
0 - 3  
segments  
FPM  
MPM  
0
1
2
0 - 10  
0
0 - 20  
21 - 50  
51 - 60  
> 60  
0 - 6  
• Normal Zone  
• Caution Zone  
• Too Fast Zone (flashing) 3 (all)  
11 - 25 3.5 - 7.5  
26 - 30 8 - 9  
1
2
6.5 - 15  
15.5 - 18  
> 18  
> 30  
> 9  
3 (all)  
NUMERIC DISPLAYS:  
• Time of Day  
Range:  
Resolution:  
0:00:00 to 23:59_59 hr:min_sec  
0:00 to 23:59 hr:min  
- 23 hr to 0 to + 23 hr  
23:59 to 0:00 hr:min  
1 to 9  
1 second  
1 minute  
1 hour  
• Dual Time  
• Dual Time Differential  
• Watch Countdown Timer  
• Watch Chrono Lap #  
• Watch Chrono Lap Time  
1 minute  
1 (Lap)  
.01 second  
0:00:00.00 to 9:59:59.99  
hr:min:sec_ .01 sec  
1:59 to 0:00 min:sec  
0 to 140°F (-18 to 60°C)  
000 to 359°  
0 to +/- 45°  
Sea, EL 2 to EL 7  
23:50 to 0:00 hr:min  
23:50 to 0:00 hr:min  
0 to 495 FT (150 M)  
• PC Countdown Timer  
• Temperature  
1 second  
1°F (C)  
001°  
• Compass Heading  
• Compass Declination  
• Altitude Level  
1°  
1 (level)  
1 minute  
1 minute  
1 FT (0.1 M )  
• Time to Fly  
• Time to Desat  
• Depth & Max Depth  
NORM, GAUG  
• Dive Number  
0 to 24  
• Surface Interval Time  
• Pressure  
• Elapsed Dive Time  
• Air Time Remaining  
0:00 to 23:59 hr:min  
0 to 5000 PSI (345 BAR)  
0:00 to 9:59 hr:min  
0 to 99 min  
1 minute  
5 PSI (1 BAR)  
1 minute  
1 minute  
NORM only  
• DTR (NDC, OTR)  
• FO2 Value (setting)  
• PO2 Value  
0:00 to 9:59 hr:min  
Air, 21 to 100 %  
0.00 to 5.00 ATA  
0 to 100 %  
1 minute  
1 %  
.01 ATA  
1 %  
• O2 Saturation  
• No Deco Deep Stop Time  
• No Deco Safety Stop Time  
• Deco Stop Time  
• Total Ascent Time  
• Violation Countdown Timer  
2:00 to 0:00 min:sec  
5:00 to 0:00 min:sec  
0:00 to 9:59 hr:min  
0:00 to 9:59 hr:min  
23:50 to 0:00 hr:min  
1 second  
1 second  
1 minute  
1 minute  
1 minute  
GAUG only  
• Dive Run Timer  
0:00 to 9:59 hr:min  
1 minute  
FREE, TECH FREE  
• Dive Number  
0 to 99  
1
• Surface Interval Time  
0:00 to 59:59 min:sec  
1:00 to 23:59 hr:min  
9:59 to 0:00 min:sec  
0:00 to 9:59 min:sec  
0:00 to 9:59 min:sec  
1 second  
1 minute  
1 second  
1 second  
1 second  
• Countdown Timer  
• Run Timer  
• Elapsed Dive Time  
WARNING: If your OCi stops working for any reason while operating as a Dive Computer, it is important that  
you have anticipated this possibility and are prepared for it. This is an important reason for not pushing the no  
decompression and oxygen exposure limits, and a critical reason to avoid entering decompression.  
If you dive in situations where your trip would be ruined or your safety would be jeopardized by losing the use of  
your OCi, a backup instrument system is highly recommended.  
© 2002 Design, 2013  
Doc. No. 12-5335-r01 (6/27/13)  
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OCi OPERATING MANUAL  
INSPECTION / SERVICE RECORD  
OCi Serial Number:  
OCi Firmware Rev:  
Transmitter:  
___________________________________________________________________________________________________  
___________________________________________________________________________________________________  
___________________________________________________________________________________________________  
___________________________________________________________________________________________________  
___________________________________________________________________________________________________  
___________________________________________________________________________________________________  
___________________________________________________________________________________________________  
Date of Purchase:  
Purchased from:  
Below to be filled in by an Authorized Oceanic Dealer:  
Date  
Service Performed  
Dealer/Technician  
NOTES  
© 2002 Design, 2013  
Doc. No. 12-5335-r01 (6/27/13)  
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OCi OPERATING MANUAL  
OCEANIC WORLD WIDE  
OCEANIC USA  
2002 Davis Street  
San Leandro, CA 94577  
Tel: 510/562-0500  
Fax: 510/569-5404  
Web: www.OceanicWorldwide.com  
E-mail: [email protected]  
OCEANIC EUROPE  
Augsburg, Germany  
Tel: +49 (0) 821 810342 0 Fax: +49 (0) 821 810342 29  
Web: www.oceanic-eu.com  
E-mail: offi[email protected]  
OCEANIC UK  
Devon, United Kingdom  
Tel: (44) 1404-891819 Fax: +44 (0) 1404-891909  
Web: www.OceanicUK.com  
E-mail: [email protected]  
OCEANIC AUSTRALIA  
Rosebud, Victoria, Australia  
Tel: 61-3-5986-0100 Fax: 61-3-5986-1760  
Web: www.OceanicAUS.com.au  
E-mail: [email protected]  
OCEANIC ASIA PACIFIC  
Singapore  
Tel: +65-6391-1420 Fax: +65-6297-5424  
E-mail: [email protected]  
OCEANIC HAWAII and MICRONESIA  
Kapolei, Hawaii  
Tel: 808-682-5488 Fax: 808-682-1068  
E-mail: [email protected]  
© 2002 Design, 2013  
Doc. No. 12-5335-r01 (6/27/13)  
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OCi OPERATING MANUAL  
OCi  
DIVE COMPUTER  
OPERATING MANUAL  
© 2002 Design, 2013  
Doc. No. 12-5335-r01 (6/27/13)  
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