Oceanic Scuba Diving Equipment 04836716 User Manual

ATOM 3.0 OPERATING MANUAL

ATOM 3.0

DIVE COMPUTER

OPERATING MANUAL

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ATOM 3.0 OPERATING MANUAL

CONTENTS (continued)

REFERENCE ......................................................................................46

PC INTERFACE..............................................................................47

CARE AND CLEANING..................................................................47

INSPECTIONS AND SERVICE.......................................................47

BATTERY REPLACEMENT............................................................48

ALTITUDE SENSING AND ADJUSTMENT....................................49

ADDITIONAL INFORMATION PERTAINING TO FREE MODE.....49

TECHNICAL DATA .............................................................................50

PZ+ ALGORITHM NDL CHART .....................................................51

DSAT ALGORITHM NDL CHART ..................................................51

SPECIFICATIONS...........................................................................52

FCC COMPLIANCE............................................................................53

INSPECTION/SERVICE RECORD .....................................................54

OCEANIC WORLD WIDE...................................................................54

NOTICES

LIMITED TWO-YEAR WARRANTY

For details, refer to the Product Warranty Registration Card provided. Register on line at www.OceanicWorldwide.com

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.

ATOM 3.0 Operating Manual, Doc. No. 12-5216

San Leandro, CA USA 94577

TRADEMARK, TRADE NAME, AND SERVICE MARK NOTICE

Oceanic, the Oceanic logo type, ATOM 3.0, the ATOM 3.0 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 ATOM 3.0 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 ATOM 3.0 dive computer model is based upon the latest research and experiments in decompression theory. Still, using the ATOM

3.0, 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.

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ATOM 3.0 OPERATING MANUAL

Welcome

OCEANIC

and

THANK YOU

for choosing the

ATOM 3.0

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ATOM 3.0 OPERATING MANUAL

FEATURES/FUNCTIONS

AND

WATCH MODE

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ATOM 3.0 OPERATING MANUAL

DISPLAY ICONS

Algorithm

Dual Time

Log

Surface Interval

No Deco Time

Deep Stop is triggered

Depth id

Number

O2 accumulated

Elapsed Dive Time

value is Max Depth

Descend, Ascend, or Stop

Time id

Air Time Remaining

Total Ascent Time

Daily AL On, or TMT Linked

Temp

value is PO2 (ATA)

value is FO2

Low Batt

Nitrox

Press

Gas/TMT #

ABBREVIATIONS/TERMS

AL (A)

ALGO

ALT

ATA

ATR

AUD

AVAIL

BAR

BATT (bAt)

= Alarm

= Algorithm

= Alternate

= Atmospheres Absolute (PO2)

= Air Time Remaining

= Audible

= Available

= Pressure (metric)

= Battery

= Temperature (Metric)

= Countdown Timer

= Change

= Meters (depth)

= Month - Day

= Maximum

M - D

MAX

MIN (min)

MPM

NDC

NDL

NOR

O2%

= Minutes

= Meters Per Minute (ascent rate)

= No Deco Dive Time Remaining

= No Deco Limit

= Normal Dive Operating Mode

= Nitrox

= Oxygen (accumulated)

= Operating (mode)

= O2 Time Limit

= O2 Time Remaining

= Pre Dive Planning Sequence

= Partial Pressure of O2 (ATA)

= Preview

= Pressure (Imperial)

= Algorithm (Pelagic Z+)

= Run Timer

= Revision (ﬁrmware)

= Safety (stop)

= Time to Desaturate

= Seconds

= Select

CDT

CHG

CHRO

D - M

DECO

DFLT (dFLt)

DIFF (diFF)

DSAT

DTR

DUAL

EDT

OTL

= Chronograph

OTR

PDPS

PO2

PSI

= Conservative Factor

= Conditional Violation

= Day - Month

= Depth Alarm

= Decompression

= Default

PZ+

RTMR (rt)

REV

SAFE

SAT

SEC (sec)

SEL

SURF

SWCH

T (t)

TAT

TLBG

TMR

TMT

VARI

VGM

VIOL (VIO)

= Differential

= Deep Stop

= Algorithm, or Desaturate

= Dive Time Remaining

= Time (at travel location)

= Delayed Violation

= Elapsed Dive Time

= Elevation (altitude)

= Temperature (Imperial)

= Free Alarm

= Fraction of Oxygen (%)

= Feet Per Minute (ascent rate)

= Free Dive Operating Mode

= Feet (depth)

= Digital Gauge Dive Operating Mode

= Glow (backlight)

= Access (Lead-in)

= Hour

= History

= Last Dive's Data

= Serial Number

= Safety Stop

= Sampling Rate

= Stop

= Surface

= Switch (gas)

= Free Alarm

= Time

FO2 (F)

FPM

FRE

= Total Ascent Time (deco)

= Tissue Loading Bar Graph

= Timer

GAU

GLO

Goto

HR (Hr)

HIST

LAST

= Transmitter

= Variable Ascent Rate Indicator

= Violation Gauge Mode

= Violation

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ATOM 3.0 OPERATING MANUAL

OVERVIEW

The ATOM 3.0 is a unique Watch/Dive Computer featuring >>

• 4 Control Buttons

• Gas/TMT Switching

• Gauge Depths to 400 FT/120 M

• Gauge Dive Run Timer

• Altitude Compensation

• NDL Conservative Factor

• Variable Ascent Rate

• PC Settings Upload/Data Download

• Audible Alarm with ﬂashing LED

• User Replaceable Battery

• User Upgradable Firmware

• 10+ Selection Groups

• 34+ Set Selections

• Increase/Decrease Set Values

• 4 Operating Modes

• 3 Nitrox Gas Mixes

• 28+ Warnings/Alarms

• Dual Watch Time

• Dual Algorithm

• No Deco Deep Stop

• No Deco Safety Stop

INTERACTIVE CONTROL CONSOLE

The Interactive Control Console utilizes 4 control buttons that allow you to maneuver through the unique system of displays.

The buttons will be referred to as M, S, A, and L.

• Upper/Left >> M (mode, minus, back)

• Upper/Right >> S (select, save)

• Lower/Left >> A (advance, access, forward)

• Lower/Right >> L (light)

SELECTION GROUPS

GAUG SURF

SELECTIONS

The LCD viewing area is used to display alpha numeric messages and measured values as well as selection groups for settings

and various auxiliary functions.

SURF MAIN

SURF ALT 1

SURF ALT 2

FLY

Selection groups include the -

• Watch Mode selections.

• Set Time selections.

• NORM Surface Mode selections.

• GAUG Surface Mode selections.

• FREE Surface Mode selections.

• Set NORM FO2 selections.

• Set NORM/GAUG Alarm selections.

• Dive Computer Operating Mode selections.

• Set Utility selections.

LOG

RUN TIMER

SET A

SET U

• Set FREE Alarm selections.

DIVE OP MODE

HISTORY

Upon entering a group, movement through it continues forward in steps or a scrolling manner, or back in steps, showing one

selection screen at a time.

BATT/TMT

• The sample at the left shows how a group would look if all of the selections could be displayed at one time.

Sample Group

(all selections shown)

Button action >>

A (< 2 sec) - to access, then step forward through selection screens.

A (hold) - to access and scroll forward through selection screens.

M (< 2 sec) - to step back through selection screens.

M (2 sec) - at any time, to revert to the Main.

S (< 2 sec) - to access a selection's function screens.

BACKLIGHT

To activate the Backlight at any time >> press the L button (lower/right).

• The Backlight will activate and illuminate the display for button depression time* plus the duration time set (0, 5, or 10

seconds), for a maximum of 20 seconds.

*The Backlight will turn Off if L is kept depressed for more than 10 seconds.

• Press L again to activate as desired.

Extensive use of the Backlight reduces estimated battery life. Also, the Backlight does not operate

during a low battery condition or when the unit is connected to a PC.

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ATOM 3.0 OPERATING MANUAL

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 acknowledged and silenced by pressing the S button (< 2 sec).

An LED warning light on 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 light will not be active if the audible is set Off (a group A setting).

FREE dive mode has its own set of alarms which emit 3 short beeps either 1 or 3 times which cannot be acknowledged or set Off.

Situations that will activate the NORM/GAUG 10 second Alarm include -

** Items apply only to NORM mode.

• Air Time Remaining (ATR) at 5 minutes, then again at 0 minutes.

• Turn Pressure at the Set Point selected (Transmitter 1 only).

• End Pressure at the Set Point selected (active Transmitter).

• Descent deeper than the Depth Alarm Set Point selected.

• Dive Time Remaining at the Set Point selected**.

• Elapsed Dive Time at the Set Point selected.

• PO2 at the Set Point selected**.

• High O2 of 300 OTU (100%)**.

• TLBG at the Set Point selected**.

• Ascent Rate exceeds 60 FPM (18 MPM) when deeper than 60 FT (18 M), or 30 FPM (9 MPM) at 60 FT (18 M) and shallower.

• Loss of the active Transmitter Link signal for more than 15 seconds during a dive.

• Entry into Decompression Mode (Deco)**.

• Conditional Violation (above a required Deco Stop Depth for less than 5 minutes)**.

• Delayed Violation (above a required Deco Stop Depth for more than 5 minutes)**.

• Delayed Violation (a Deco Stop Depth greater than 60 FT/18 M is required)**.

• Delayed Violation (Max Operating Depth of 330 FT/100 M is exceeded).

• A Gas Switch would expose the diver to PO2 => 1.60 ATA**.

• Watch Daily Alarm reaches time set (disabled during Dive Modes).

• Watch Mode Countdown Timer reaches 0:00.

A single short beep (which cannot be disabled) sounds -

• After 5 minutes on the surface after the Violation dive.

3 short beeps (which cannot be disabled) sound when -

• Ascent Rate is 51 to 60 FPM (15.1 to 18 MPM) when deeper than 60 FT (18 M), or 26 to 30 FPM (7.5 to 9 MPM) at 60 FT (18 M) and shallower.

• FREE Dive Elapsed Dive Time Alarm (3 beeps every 30 seconds if set On).

• FREE Dive Depth Alarms 1, 2, 3 (set sequentially deeper) - each 3 beeps 3 times.

• FREE Dive TLBG Alarm (Caution zone, 4 segments) - 3 beeps 3 times.

• Entry into Deco during a FREE Dive (Violation) - 3 beeps 3 times.

• Free Dive Mode Countdown Timer reaches 0:00 - 3 beeps 3 times.

During the following NORM Dive situations, the 10 second continuous tone will be followed by a 5 second beep that will not turn off when acknowledged -

• Ascent above a Deco Stop for more than 5 minutes.

• Deco requires a Stop Depth of 70 FT/21 M or deeper.

• On the Surface for 5 minutes after a Conditional Violation.

PC INTERFACE

Interface with a PC, to allow uploading settings and downloading data, is accomplished by connecting the unit to a PC USB port using the special USB

interface cable.

The software program together with the USB driver required is on the Oceanlog CD, and can be downloaded from the OceanicWorldwide web site. The

program's HELP** serves as the user manual which can be printed for personal use.

**Prior to attempting to download data from your unit or upload settings to it, review the HELP section of the Oceanlog program. Recommended is to

print those sections of HELP that you consider appropriate for your Interface activities.

The settings upload portion of the Oceanlog program can be used to set/change the Main Time, Date, Set A group (Alarms), Set U group (Utilities), and

FREE mode items using the same interface system. FO2 must be set using the control buttons.

Information available for retrieval (download) from the unit to the PC download portion of the program includes dive data such as number, surface interval

time, maximum depth, elapsed dive time, no deco status, start date/time, lowest temperature under water, sampling rate, dive proﬁle, and set points.

The Oceanlog program also allows upgrade of select versions of the ﬁrmware (operating system software) after which the unit resets all operating data.

Since the upgrades require reset of the unit, they are blocked during 24 hours after dives.

• Refer to page 47 for more details relating to Oceanlog and PC Interface.

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ATOM 3.0 OPERATING MANUAL

POWER SUPPLY

• Watch Battery >> (1) 3 vdc, CR2430, 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.

• TMT (Transmitter) Battery >> (1) 3 vdc, CR2, .75 Ahr, Lithium battery.

• Use life >> 300 dive hours if (2) 1 hour dives per dive day.

• Replacement >> user replaceable (annual recommended).

Battery icon (applies to ATOM 3.0 only, not TMTs):

• Warning >> icon on solid < 2.75 volts, battery change recommended.

• Alarm >> icon on ﬂashing < 2.50 volts, change the battery.

BATTERY STATUS (Fig. 1)

To access, while viewing NORM (or GAUG) SURF Main >>

• M (< 2 sec) to access Menu.

• A (< 2 sec), repeat until the BATT/TMT Lead-in screen. appears displaying the graphics Goto bAtt TMT (A).

• S (< 2 sec), while viewing the Goto, activates Receiver, then ATOM Status screen appears for 3 sec (B), then each active

TMT's Status screen for 3 sec (C).

ATOM 3.0 LOW BATTERY WHILE ON THE SURFACE

<= 2.75 volts (warning level)

• Backlight is completely disabled.

• Battery icon (shell with inner bar) appears solid on the Watch and DC Surface Main screens (Fig. 2a).

• If a dive is started, the icon is not displayed on the dive mode screens.

• Watch and DC functions continue to be available.

Fig. 1 - BATTERY STATUS

<=2.50 volts (Too Low - alarm level)

• All operations as a DC (dive computer) are terminated and the unit operates only as a Watch.

• Low Battery icon (shell only with no inner bar) ﬂashes for 5 seconds and operation reverts to Watch Time (Fig. 3) until the

Battery is changed or voltage cannot sustain operation (< 2.35 volts) and the unit turns off.

ATOM 3.0 LOW BATTERY DURING A DIVE

<= 2.75 volts (warning level)

• Backlight is completely disabled.

• Full DC functions 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.

Fig. 2 - SURF MAIN

(low battery warning)

<= 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) ﬂashes for 5 seconds during which the

graphics CHG and bAt alternate (Fig. 4) and operation reverts to Watch Time (page 18) until the Battery is changed or

voltage cannot sustain operation (< 2.35 volts) and the unit turns off.

TMT (TRANSMITTER) LOW BATTERY

Indication is only provided while on the surface.

Fig. 3 - WATCH MAIN

(low battery alarm)

<= 2.75 volts (warning level)

• The graphics bAtt, LOW, and TMTx with icon appear solid on the Battery Status screen (Fig. 5).

• DC functions continue to be available (surface and dive).

alt w/

bAt

<= 2.50 volts (Too Low - alarm level)

• The graphic TMT1 alternates with the graphic BATT LO in place of Pressure on the NORM (or GAUG) SURF Main screen

(Fig. 6).

• The graphics bAtt, LOW, and TMTx with icon also ﬂash on the Battery Status screen.

• TMT operation continues until Tank Pressure decreases to 50 PSI.

Fig. 4 - SURF MAIN

(low battery alarm during dive)

Fig. 5 - TMT BATT STATUS

(low battery warning)

Fig. 6 - SURF MAIN

(TMT low battery alarm)

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ATOM 3.0 OPERATING MANUAL

WATCH MAIN (DEFAULT) TIME

Selection of Main (Default) Time is a Set T menu item.

Time of day and date can be set when either Home or Away time is selected as the default.

Main Time is the current time at your home location and is normally selected as the Watch Default Time.

blank

if off

Away Time, set by Hour Differential, is the current Time at a remote travel location. Upon arrival at the location, Away Time can

be interchanged with Main Time to make it the Default Time while visiting the travel location.

Dual Time is the second, or differential time, that can be displayed simultaneously with Main Time when enabled. It is a +/- Hour

Differential based on the Time that is set while at home or the opposite if set while away.

Once Dual Time (the Hour differential) is set, it will automatically change when Time of Day is changed. When Away Time is

selected to be the Watch Default Time (while at a travel location), it will be changed directly when Time of Day is changed and

Home Time will then change by a Hour differential opposite the one set for Dual Time.

Fig. 7 - WATCH MAIN

(Home, Dual on)

MAIN (Default) TIME, information includes (Fig. 7):

> Dual Time (hr:min) with icon, if enabled.

> Main (Default) Time (hr:min_sec) with AM (or PM) icon.

> Alarm (speaker) icon, if Daily Alarm is set On.

WATCH GROUP

(selection sequence)

---------------------

MAIN TIME

> Day of Week graphic (MON, TUE, etc.).

> Away Time icon (lazy 8), meaning Away is selected as Main Time, blank if Home is Main.

> Battery icon, if a Low Battery voltage exists.

> TLBG with icon, if any after NORM or FREE dives.

ALTERNATE 1

ALTERNATE 2

• M (2 sec) - to access NORM Surface Main.

• A (< 2 sec) - to access Watch ALT 1.

• M (< 2 sec) - to access Set T (Time/Date).

• S (< 2 sec) - to silence the Daily Alarm.

• L (press) - to activate the Backlight.

SHOW DUAL TIME

COUNTDOWN TIMER

CHRONOGRAPH

DAILY ALARM

SET T LEAD-IN

WATCH GROUP, button operations* >>

These operations apply to all group selections that follow, those marked with * are not repeated when describing each selection.

• A (< 2 sec) - to step forward through selections.

• A (hold)* - to scroll forward through selections.

• M (< 2 sec) - to step back through selections.

• M (2 sec, any time)* - revert to Main.

• No button action (2 min)* - revert to Main.

• L (press)* - to activate the Backlight.

WATCH ALT 1, information includes (Fig. 8):

> Altitude graphic EL - 2 to EL - 7, blank if Sea level.

> Date, as Month.Day (or Day.Month).

Fig. 8 - WATCH ALT 1

> Temperature with ° icon and graphic F (or C).

• A < 2 sec - to step forward to ALT 2 (if Dual Time is not on Main), or bypass ALT 2 to Show Dual Time Lead-in (if Dual Time

is on Main).

• M < 2 sec - to step back to Watch Main.

WATCH ALT 2, information includes (Fig. 9):

This selection is bypassed if Dual Time is displayed on Main.

> Dual Time (hr:min) with icon.

> Graphic AWAY (or HOME), indicating the location that Dual applies to.

Fig. 9 - WATCH ALT 2

(only if set & not on Main)

• A < 2 sec - to step forward to Show Dual Time Lead-in.

• M < 2 sec - to step back to ALT 1.

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ATOM 3.0 OPERATING MANUAL

SHOW DUAL TIME

This selection allows Dual Time, which is set by an hour differential, to be added, or removed from, to the Watch Main screen.

Dual Time Lead-in, information includes (Fig. 10):

> Graphics Goto, SHOW, and DUAL.

• S (< 2 sec) - to access Show Dual Time.

• A (< 2 sec) - to step forward to CDT Lead-in.

• M (< 2 sec) - to step back to Watch ALT.

Fig. 10 - DUAL TIME LEAD - IN

(to access Show)

Show Dual Time, information includes (Fig. 11):

> Graphic YES (or NO) ﬂashing, or 2 dashes ( - - ) if no differential is set.

> Graphics SHOW and DUAL with icon.

• A or M (< 2 sec) - to toggle between YES and NO.

• S (< 2 sec) - to save the setting and revert to Lead-in.

• S (2 sec) - to step back to Lead-in, if no setting change.

WATCH CDT (Countdown Timer)

This selection provides access to a CDT for use in Watch mode.

Fig. 11 - SHOW DUAL TIME

(to add to Main)

Upon accessing a dive computer mode, Watch CDT operation will be terminated and the time reset to the previous setting.

CDT Lead-in, information includes (Fig. 12):

> Graphics Goto and CDT.

• S (< 2 sec) - to access CDT Status.

• A (< 2 sec) - to step forward to Chrono Lead-in.

• M (< 2 sec) - to step back to Dual Time Lead-in.

Fig. 12 - CDT LEAD - IN

(to access CDT Status)

CDT Status, information includes (Fig. 13):

> Graphic OFF (or ON) ﬂashing. If OFF, 0:00 or the CDT if previously set. If ON, the remaining CDT (hr:min).

> Graphic CDT.

• A (< 2 sec) - to step forward through selections of OFF, ON, and SET.

• M (< 2 sec) - to step back through selections.

• S (< 2 sec) - to save the selection.

>> If OFF or ON is selected, revert to the Lead-in screen.

>> If SET is selected, access the Set CDT screen.

• S (2 sec) - to revert to CDT Lead-in, if no setting change.

Fig. 13 - CDT STATUS

Set CDT, information includes (Fig. 14):

> Graphics SEt and CDT.

> Timer setting (hr:min), with Hour digits ﬂashing.

• 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.

• M (< 2 sec) - to step back through Set Points.

• S (< 2 sec) - to save the Hour setting 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.

Fig. 14 - SET CDT

(after access from Status)

• M (< 2 sec) - to step back through Set Points one at a time.

• S (< 2 sec) - to save the CDT setting and revert to the CDT Status screen with the graphic SEt ﬂashing (Fig. 15).

> ON will then start the countdown and revert to CDT Lead-in.

> OFF will save the setting and revert to CDT Lead-in.

The CDT will run in the background until it counts down to 0:00, or it is set OFF, or DC Mode is accessed or a Dive is started in

which case the countdown will terminate and revert to OFF.

When a set CDT reaches 0:00, the Audible will sound during which time the graphic CDT will ﬂash on the Watch Main.

Fig. 15 - CDT STATUS

(after being set)

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ATOM 3.0 OPERATING MANUAL

CHRONOGRAPH

The Chronograph is a stop watch timer for use in Watch mode.

While the Chronograph is running, it remains on the screen until another screen is accessed, it will then continue to run in the

background while on the surface until stopped and reset.

When a dive is started (descent to 5 FT/1.5 M), Chrono operation will be terminated and the time will reset to 0:00_00.

Chrono Lead-in, information includes (Fig. 16):

> Graphics Goto and CHRO.

Fig. 16 - CHRONO LEAD-IN

1/100th

sec

• S (< 2 sec) - to access Chrono Status.

• A (< 2 sec) - to step forward to Daily Alarm Lead-in.

• M (< 2 sec) - to step back to CDT Lead-in.

Chrono Status, information includes (Fig. 17):

> Graphics LAP1 (or 2 to 9) and CHRO.

> Elapsed run time counting up (if previously started), or 0:00_00 (min:sec_1/100th sec), ﬂashing.

Fig. 17 - CHRONO STATUS

(Lap 1 started, counting up)

• S (< 2 sec) - to start the Timer which begins counting up to 1:59:59_99 max in increments of .01 sec.

After the ﬁrst 4.99 seconds, the .01 digits display 2 dashes.

• S (< 2 sec) - to save that Lap's time and display the next Lap # (up to 9, then restart with 1) with the Timer continuing to

count up, displaying total run time.

• A (< 2 sec) - to stop the Timer and recall LAP1 ﬂashing with it's time (Fig. 18). Repeat to recall other Lap times.

• A (2 sec) - to reset total run time to 0:00_00.

• S (2 sec) - to exit and revert to the Chrono Lead-in.

DAILY ALARM

When set On, the Daily Alarm will -

Fig. 18 - CHRONO LAP

RECALL

> be synchronized with the Watch Default Time selected.

> sound the Audible at the Time set every day.

> not sound the Audible while operating in DC Modes.

> run in the background until set Off.

Daily Alarm Lead-in, information includes (Fig. 19):

> Graphics Go to and DAY AL.

• S (< 2 sec) - to access Daily Alarm Status.

• A (< 2 sec) - to step forward to Set T Lead-in.

• M (< 2 sec) - to step back to Chrono Lead-in.

Fig. 19 - DAILY ALARM

LEAD-IN

Daily Alarm Status, information includes (Fig. 20):

> Set Point graphic ON (or OFF) ﬂashing.

> Alarm Time (hr:min) with AM (or PM) icon if 12 Hour.

> Graphics DAY AL.

• A (< 2 sec) - to step forward through the selections of OFF, ON, and SET.

• M (< 2 sec) - to step back through the selections.

• S (< 2 sec) - to save the selection, and -

> if OFF or ON is selected, revert to Daily Alarm Lead-in.

> if SET is selected, the Set screen is accessed.

Fig. 20 - DAILY ALARM

STATUS (to access Set)

Set Daily Alarm, information includes (Fig. 21):

> Graphics SEt and DAY AL.

> Alarm Time (hr:min) with icon, Hour digits ﬂashing.

• 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.

• M (< 2 sec) - to step back through Set Points.

• S (< 2 sec) - to save the Hour setting 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.

Fig. 21 - SET DAILY ALARM

• M (< 2 sec) - to step back through Set Points.

• S (< 2 sec) - to save the Alarm setting and revert to the Daily Alarm Status screen with SEt ﬂashing (Fig. 22).

To turn the alarm function On -

• A or M (< 2 sec) - to step through the selections (OFF, ON, SET) to ON.

• S (< 2 sec) - to save the ON selection (enable the alarm) and revert to the Set Daily Alarm Lead-in.

Fig. 22 - DAILY ALARM

STATUS (Set, ready)

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SET T GROUP (TIME)

Sequence >> Lead-in >> Date Format >> Hour Format >> Default Time >> Dual Time >> Time of Day >> Date.

Set Points remain as set until changed.

Set T Lead-in, information includes (Fig. 23):

> Graphics Goto and SET t.

• S (< 2 sec) - to access Set Date Format.

• A (< 2 sec) - to step forward to Watch Main Time.

• M (< 2 sec) - to step back to Daily Alarm Lead-in.

Fig. 23 - SET T LEAD-IN

Set Date Format, information includes (Fig. 24):

Date Format establishes the position that the Month (M) digits are displayed relative to the Day (D) digits, on the left or right.

> Graphic SEt.

> Set Point graphic M - D (or D - M) ﬂashing.

• A or M (< 2 sec) - to toggle the Set Points.

• S (< 2 sec) - to save setting and access Set Hour Format.

• S (2 sec) - to step back to Set T Lead-in.

Fig. 24 - SET DATE FORMAT

Set Hour Format, information includes (Fig. 25):

Hour Format establishes number of hours displayed for Time of Day, 1 to 12 (AM and PM) or 1 to 24.

> Graphics SEt and Hr.

> Set Point graphic 12 (or 24) ﬂashing.

• A or M (< 2 sec) - to toggle the Set Points.

• S (< 2 sec) - to save setting and access Set Default Time.

• S (2 sec) - to step back to Set Date Format.

Fig. 25 - SET HOUR FORMAT

Select Default Time, information includes (Fig. 26):

This feature selects which Time, Home or Away, is to be displayed as the Watch Main (Default) Time (in the center of the Watch

Time screen)*.

*The other will be displayed (at the top of the Watch Time screen) when a Dual Time (differential) is set and Show Dual Time is set for YES.

> Graphics SEL and dFLt.

> Set Point graphic HOME (or AWAY) ﬂashing.

• A or M (< 2 sec) - to toggle the Set Points.

• S (< 2 sec) - to save setting and access Set Dual Time Diff.

• S (2 sec) - to revert to Set Hour Format.

Fig. 26 - SELECT DEFAULT

(as Watch Main Time)

HOME is the time where you live, work, spend most of your time.

AWAY is the time set for a travel destination.

DEFAULT is the time you choose as the Watch's local main time (Home or Away).

DUAL is the time at the other remote location (Away or Home).

Set Dual Time Differential, information includes (Fig. 27):

This feature allows you to set an Hour based numeric time Differential ranging from - 23 through 0 to + 23 (hours).

It provides a second (Dual) Time equal to the Watch's Default Time of Day +/- the Hours selected.

Fig. 27 - SET DUAL TIME

(when Home is default)

> Graphics SEt, diFF, and Hr, with DUAL icon.

> Set Point graphic OFF, or the Hour Differential numeric digits with + (or - ) icon, ﬂashing.

> Lazy 8 icon (Fig. 28a) meaning Away is the Watch Main (default) Time, no icon if Home is the default.

• A (hold) - to scroll upward through the Set Points (8/sec) from - 23 through 0 to + 23 in increments of 1 (hour).

• A (< 2 sec) - to step upward through Set Points.

• M (< 2 sec) - to step back through Set Points.

• S (< 2 sec) - to save the setting and access Set Time.

Fig. 28 - SET DUAL TIME

(when Away is default)

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ATOM 3.0 OPERATING MANUAL

Set Time of Day, information includes (Fig. 29):

This setting directly changes the Time of Day, whichever one is selected as the Default, Home Time or Away.

The other will be changed by the Dual Time (Hour Differential) set.

> Graphics SEt and HOME (or AWAY).

> Time of Day (hr:min), Hour digits ﬂashing, with AM (or PM) icon if 12 Hour Format, no icon if 24 Hour.

• 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).

Fig. 29 - SET TIME

(when Home is default)

• A (< 2 sec) - to step upward through Hour Set Points.

• M (< 2 sec) - to step back through Set Points.

• S (< 2 sec) - to save the Hour setting and ﬂash the Minute digits (Fig. 30).

• S (2 sec) - to step back to Set Dual Time Differential.

• 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.

• M (< 2 sec) - to step back through Set Points.

• S (< 2 sec) - to save the Time setting and access Set Date.

• S (2 sec) - to step back to Set Hour.

Fig. 30 - SET TIME

(when Away is default)

Set Date, information includes (Fig. 31):

Sequence is Year >> Month >> Day, regardless of Format set.

> Graphic SEt.

> Month.Day (or Day.Month) digits.

> Year Set Point, digits ﬂashing.

• A (hold) - to scroll upward through Year Set Points (8/sec) from 2010 to 2053, in increments of 1.

• A (< 2 sec) - to step upward through Year Set Points.

• M (< 2 sec) - to step back through Set Points.

• S (< 2 sec) - to save the Year setting and ﬂash the Month digits.

• S (2 sec) - to step back to Set Time.

Fig. 31 - SET DATE

(while Away)

• 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 Set Points.

• M (< 2 sec) - to step back through Set Points.

• S (< 2 sec) - to save the Month Set Point and ﬂash the Day digits.

• S (2 sec) - to step back to Set Year.

• 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 Set Points.

• M (< 2 sec) - to step back through Set Points.

• S (< 2 sec) - to save the Date Set Point and revert to the Set T Lead-in.

• S (2 sec) - to step back to Set Month.

DIVE COMPUTER OPERATING MODES

NORM Mode >> for Air and Nitrox SCUBA activity with 1 to 3 Gases/TMTs.

GAUG Mode >> for SCUBA activity with 1 to 3 TMTs.

FREE Mode >> for breath hold diving activity with Depth/Time indication.

If no previous dive has been taken within the past 24 hours, NORM is the default upon access from Watch Mode. Others can be accessed using the

Surface Menu.

At any time while operating in Surface Modes, operation will enter the Dive Mode selected upon descent to 5 FT (1.5 M) for 5 seconds.

Operation will revert from Dive Mode to Surface Mode upon ascent to 2 FT (0.6 M) for 1 second.

During the ﬁrst 10 minutes after a NORM/GAUG dive, or 1 minute after a FREE dive, the Dive Main screen will remain on displaying Elapsed Dive Time

and Pressure together with Surface Interval Time in place of Current Depth.

• During the ﬁrst 10 minutes (or 1 minute), Dive ALT screens can be viewed and Gas/TMT Switching can be performed.

• A descent during the ﬁrst 10 minutes after surfacing from a NORM or GAUG dive, or the ﬁrst 1 minute after surfacing from a FREE dive, is a

continuation of that dive.

• After the 10 minute (or 1 minute) interval has elapsed, the normal Surface Main will be displayed with access given to the Surface group selections.

A descent is then considered a new dive.

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ATOM 3.0 OPERATING MANUAL

NORM

SURFACE MODES

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NORM SURF MAIN, information includes (Fig. 32):

> (PZ+) icon, if selected as Algorithm, no icon if DSAT.

> CF icon, if Conservative Factor is set On.

> Surface Interval time (hr:min) with SURF icon; if no dive yet, this is time since mode access.

> Graphic NOR.

> Dive number with # icon, up to 24 for that operating period (0 if no dive made yet).

> TMT 1 Pressure with PSI (or BAR) and link (speaker) icons, if active. #1 is the default in Surface Mode.

> FO2 Set Point (21 to 100%), if FO2 is set for Nitrox.

> NX icon, if FO2 is set for Nitrox.

> Gas/TMT (tank) 1 icon. #1 is the default in Surface Mode.

> TLBG with icon, if any after a NORM or FREE dive.

> Battery icon, if voltage is low.

Fig. 32 - NORM SURF MAIN

(no dive yet)

• M (2 sec) - to access Watch Main.

• A (< 2 sec) - to access NORM SURF ALT 1.

• M (< 2 sec) - to access BATT/TMT.

• L (press) - to activate the Backlight.

Upon surfacing during dives, the Dive Main will remain on display for the ﬁrst 10 minutes, with Surface Interval time (SI) in place

of Depth, after which the post dive Surface Main will be displayed (Fig. 33).

Fig. 33 - NORM SURF MAIN

(> 10 min after dive 2)

NORM SURFACE GROUP, button operations* >>

These operations apply to all group selections that follow, those marked with * are not repeated when describing each selection.

• A (< 2 sec) - to step forward through selections.

• A (hold)* - to scroll forward through selections.

• M (< 2 sec) - to step back through selections.

• M (2 sec, any time)* - revert to Main.

• No button action (2 min)* - revert to Main.

• L (press)* - to activate the Backlight.

NORM SURF GROUP

(selection sequence)

---------------------

ALT 1 (Last)

ALT 2

ALT 3 (if Nx)

FLY

DESAT

Various descriptions that follow (as labeled) apply to GAUG as well as NORM.

PLAN

LOG

SET F

SET A

SET U

SEL DIVE OP

HISTORY

NORM SURF ALT 1, information includes (Fig. 34):

> SI* (hr:min) with SURF icon, prior to Last dive.

> Graphic LAST, indicating data is for the dive previously conducted while still in NORM mode.

> Max Depth* with MAX and FT (or M) icons.

> Elapsed Dive Time* (up to 999) with EDT and min icons.

BATT/TMT

*Dashes if no previous dive conducted.

• A (< 2 sec) - to step forward to ALT 2.

• M (< 2 sec) - to step back to Main.

NORM SURF ALT 2, information includes (Fig. 35):

> Altitude graphic (EL - 2 to EL - 7), blank if Sea level.

> Time of Day (hr:min_sec) with AM or PM icon if 12 Hour Format, no icon if 24 Hour Format.

> Temperature with ° icon and graphic F (or C).

• A (< 2 sec) - to step forward to ALT 3 if Nitrox, or FLY if Air.

• M (< 2 sec) - to step back to ALT 1.

Fig. 34 - NORM SURF ALT 1

(Last dive's data)

NORM SURF ALT 3, information includes (Fig. 36):

This screen is bypassed if FO2 is set for Air and prior to ﬁrst dives of an activation period.

> Current O2 saturation with O2% icon.

> PO2 alarm value set (ATA) with PO2 icon.

> FO2 set for Gas 1 (21 to 100%) with FO2.

> NX and Gas (tank) 1 icons.

> (PZ+) icon, if selected, no icon if DSAT.

> CF icon, if set On.

Fig. 35 - NORM SURF ALT 2

• A (< 2 sec) - to step forward to FLY.

• M (< 2 sec) to step back to ALT 2.

Fig. 36 - NORM SURF ALT 3

(only if Nitrox)

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ATOM 3.0 OPERATING MANUAL

TIME TO FLY (NORM/GAUG)

Time to Fly is a countdown timer that begins counting down from 23:50 to 0:00 (hr:min) 10 minutes after surfacing from a dive

(NORM, GAUG, or FREE).

FLY, information includes (Fig. 37):

> Time to Fly countdown (hr:min), - : - - if no dive yet, 0:00 if time has elapsed.

> Graphic FLY.

• A (< 2 sec) - to step forward to DSAT if NORM, or LOG if GAUG.

• M (< 2 sec) - to step back to ALT 3 if Nitrox, or ALT 2 if Air or GAUG.

Fig. 37 - TIME TO FLY

(beginning 10 min after dives)

DSAT TIME (NORM only)

Time to Desaturate (Dsat Time) is also a countdown timer. It is calculated time for tissue desaturation at sea level.

Beginning 10 minutes after surfacing from a NORM or FREE dive, it counts down from a maximum of 23:50 to 0:00 (hr:min).

Dsat requiring more than 24 hours will display 24HR until it decreases to 23:59.

After a FREE dive, access to the DSAT screen can be gained by ﬁrst accessing the NORM Mode.

Fig. 38 - TIME TO DSAT

After a violation dive, 3 dashes ( - - - ) will be displayed in place of countdown time.

> When other screens are accessed, the DSAT time continues to countdown in the background.

> In the event that time to desaturate still remains at the end of 24 hours, any remaining time will be cleared.

We do not go beyond 24 hours since there is not a realistic set of repetitive dive proﬁles on SCUBA for which the 480 minute tissue exceeds 8 FSW, which clears

at 24 hours. All other tissues with a half time of 160 minutes or less will have desaturated in less than 12 hours.

DSAT, information includes (Fig. 38):

> Time to Desaturate (hr:min), - : - - if no dive yet, 0:00 if no time remaining.

> Graphic DSAT.

• A (< 2 sec) - to step forward to PLAN.

• M (< 2 sec) - to step back to FLY.

PLAN MODE (NORM only)

Dive time calculations in Plan Mode are based on -

> the algorithm selected (DSAT or PZ+).

> the FO2 value set for Gas 1, the default used for Plan.

> the setting for the Conservative Factor (Off or On*).

> any residual nitrogen remaining, or oxygen accumulation, from previous dives (NORM or FREE)

Fig. 39A - PLAN LEAD-IN

(FO2 Gas 1 set for Air)

*When the Conservative Factor is set On, Dive times are reduced to the values of the next higher 3000 foot (915 meter) Altitude. Refer to tables in back.

Plan Lead-in, information includes (Fig. 39A, B):

> (PZ+) icon if selected, no icon if DSAT.

> Graphic PLAN.

> CF icon, if set On.

> Graphic AIR, or PO2 alarm value set (ATA) with PO2 and NX icons if Nitrox.

> Gas 1 FO2 Set Point, 21 to 100 (%), with FO2 icon, if Nitrox.

> Gas 1 (tank) icon, default for Plan.

Fig. 39B - PLAN LEAD-IN

(FO2 Gas 1 set for Nitrox)

• A (< 2 sec) - to step forward to Log.

• M (< 2 sec) - to step back to DSAT.

• S (< 2 sec) - to access PDPS.

PDPS (Pre Dive Planning Sequence)

The PDPS displays Depths and allowable Dive Times (up to 999 minutes), NDLs (No Deco limits) if nitrogen loading is in control

or OTLs (O2 limits) if oxygen accumulation is in control.

Fig. 40A - PDPS

PDPS screens will display Depths from 30 to 190 FT (9 to 57 M) with Plan times* 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).

(FO2 Gas 1 set for Air)

*If less then 1 minute time is available, dashes will be displayed for time, and Depth values will ﬂash.

PDPS, information includes (Fig. 40A, B):

> Plan Depth value with FT (or M) icon.

> Dive Time allowed with NDC (or O2) and min icons.

> Graphic AIR, or Gas 1 FO2 Nitrox Set Point (21 to 100) with FO2 icon.

> Gas 1 (tank) icon, default for Plan.

> NX, (PZ+), CF icons - if they apply.

Fig. 40B - PDPS

(FO2 Gas 1 set for Nitrox)

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ATOM 3.0 OPERATING MANUAL

• A (< 2 sec) - to step forward through PDPS screens.

• A (hold) - to scroll forward through PDPS screens (8/sec) from 30 to 190 FT (9 to 57 M) in increments of 10 FT (3 M).

• M (< 2 sec) - to step back through PDPS screens.

• S (< 2 sec) at any time - to exit and revert to Plan Lead-in.

LOG MODE (NORM/GAUG)

Information from the latest 24 NORM and/or GAUG dives is stored for viewing.

> After exceeding 24 dives, data for the most recent dive is recorded and 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 and DC operation shuts off, the ﬁrst dive of the next DC activation period will be #1.

> In the event that a dive’s elapsed time (EDT) exceeds 199 (min), the data at the 199 (min) interval is recorded in the Log

upon surfacing of the unit.

Sequence >> Lead-in > Preview > Data 1 > Data 2 > Data 3.

Log Lead-in, information includes (Fig. 41):

> Log (book) icon.

> Graphics Goto and LOG.

Fig. 41 - LOG LEAD-IN

• A (< 2 sec) - to step forward to SET F.

• M (< 2 sec) - to step back to PLAN.

• S (< 2 sec) - to access Log Preview.

Log Preview, information includes (Fig. 42):

> Log Mode (book) icon.

> Date (month.day or day.month), the dive was conducted.

> Time dive began (hr:min) with AM (or PM) icon if 12 Hour Format, no icon if 24 Hour Format, and lazy 8 icon if Away time;

or graphics NONE YET if no dive recorded.

> Dive number (1 to 24, 0 if no dive yet) with # icon.

> Graphic NOR (or GAU or VIO).

> NX, (PZ+), CF, DS icons - if they apply.

Fig. 42 - LOG PREVIEW

(Deco during dive)

• A (< 2 sec) - to step through Preview screens from the most recent to the oldest recorded.

• A (hold) - to scroll through Preview screens from the most recent to the oldest recorded (8/sec).

• M (< 2 sec) - to step back through Preview screens.

• S (< 2 sec) - to access Data 1 for the dive displayed.

• S (2 sec) at any time - to revert to Log Lead-in.

Log Data 1, information includes (Fig. 43A, B):

> Log Mode (book) icon

Fig. 43A - LOG DATA 1

(No Deco, Nitrox)

> Pre dive SI (hr:min), - : - - if no previous dive that activation period, with SURF icon.

> Max Depth with MAX and FT (or M) icons.

> Elapsed Dive Time with EDT and min icons.

> Pressure of Tank 1 at end of dive with PSI (or BAR) and TMT (tank) 1 icons.

> Total Ascent Time (min) with TAT and min icons, if Deco.

> TLBG with the max accumulation segment ﬂashing, others ﬁxed up to end of dive accumulation. All segments ﬂashing if a

Delayed Violation. No TLBG if Gauge Mode.

> VARI, max Ascent Rate sustained for 4 sec

> NX, (PZ+), CF, DS icons - if they apply

• S (< 2 sec) - to access Data 2 for the dive displayed.

• S (2 sec) at any time - to revert to Log Lead-in.

Fig. 43B - LOG DATA 1

(Deco, Nitrox)

Log Data 2, information includes (Fig. 44):

> Log Mode (book) icon.

> Graphic SEA (or EL - 2 to EL - 7), indicating the Altitude at which the dive was conducted.

> Temperature with ° icon and graphic F (or C), indicating the minimum recorded during that dive.

• S (< 2 sec) - to access Data 3 for that dive; or revert to Preview if a GAUG dive.

• S (2 sec) at any time - to revert to Log Lead-in.

Log Data 3, information includes (Fig. 45):

Fig. 44 - LOG DATA 2

> Log Mode (book) icon.

> Graphic O2.

> O2 staturation (%) at end of dive with O2% icon, 2 dashes if Violation Gauge Mode.

> Highest PO2 (ATA) value reached during the dive with PO2 icon.

> FO2 Set Point for the Gas in use when dive ended with FO2 and Gas (tank) icons.

> NX, (PZ+) icons - if they apply.

• S (< 2 sec) - to revert to that dive's Log Preview.

• S (2 sec) at any time - to revert to Log Lead-in.

Fig. 45 - LOG DATA 3

(only if NORM Nitrox)

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SET F GROUP (FO2), NORM only

Selections >> FO2 Gas 1 > FO2 Gas 2 > FO2 Gas 3 > FO2 50% Default.

> FO2 settings revert to AIR 24 hours after a dive.

> The FO2 50% Default remains as set until changed.

FO2 50% Default:

> When set ON and FO2 Gas 1 is set for a numerical value, 10 minutes on the surface after that dive FO2 Gas 1 is

displayed as 50% and further dives are calculated based on 50% O2 for oxygen calculations and 21% O2 for nitrogen

calculations (79% Nitrogen) unless FO2 Gas 1 is set before the dive.

> FO2 Gas 1 continues to reset to the 50% Default after subsequent repetitive dives until 24 hours elapse after the last dive, or

the Default is set OFF.

> When set OFF, FO2 Gas 1 remains at the last Set Point for that period of activation.

> If set OFF, the FO2 for all gases remain at their respective Set Points until changed.

> If set ON, the FO2 for all gases default to 50%.

FO2 Gas 1 set for AIR:

> FO2 for Gas 1 each new dive period will be AIR, and calculations will be the same as when it is set for 21% O2.

> It remains set for AIR until it is set for a numerical value (21 to 100%).

> O2% and PO2 values and/or warnings are not displayed, on surface or during dive.

> Max operating depths affected by the PO2 limit set are not displayed in Plan.

> The unit keeps track of the O2 loading so that if FO2 Gas 1 is subsequently set for a numerical value, the O2 accumulated

during previous AIR dives will be accounted for in the next Nitrox dive (during that dive period and series of repetitive

dives).

FO2 set for Nitrox:

> When FO2 for any Gas is set for a numerical value (21 to 100%), the dive is considered Nitrox with the NX icon displayed

on all applicable screens.

> Once FO2 for Gas 1 is set for a numerical value (21 to 100%), the AIR option for all gases is disabled until 24 hours elapse

after the last dive.

> The AIR option is not be displayed in Set FO2 until a full 24 hour Surface Interval has elapsed.

Set F Lead-in, information includes (Fig. 46):

> Graphics Goto and SET F.

• A (< 2 sec) - to step forward to SET A.

• M (< 2 sec) - to step back to LOG.

• S (< 2 sec) - to access Set FO2 Gas 1.

Fig. 46 - SET F LEAD-IN

Set FO2 Gas 1 (2, 3 similar), information includes (Fig. 47):

> Graphic SEt.

> Graphic AIR ﬂashing (Fig. 47A), with Gas (tank) 1 (or 2 or 3) and FO2 icons.

- - or - -

> Max Depth allowed with MAX and FT (or M) icons.

> PO2 Alarm value set (ATA) with PO2 icon.

> FO2 value ﬂashing (Fig. 47B), with NX, Gas (tank) 1 (or 2 or 3) and FO2 icons.

• A (hold) - to scroll upward through the Set Points from Air to 21 through 100% (8/sec) in 1% increments. The scroll stops

when the button is released, or at 32, 50, and 80% (even if A is held depressed).

• A (hold) again - to restate the scroll, then stop at Air (or 21).

Fig. 47A - SET FO2 GAS 1

(for Air)

• A (< 2 sec) - to step upward through Set Points.

• M (< 2 sec) - to step back through Set Points.

• S (< 2 sec) - to save the setting and access the next Set FO2 selection.

• S (2 sec), if the Set Point is not changed - to step back to the Lead-in screen or the previous set selection.

Set FO2 50% Default, information includes (Fig. 48):

> Graphics SEt, DFLT, and 50 with FO2 icon, solid.

> Set Point graphic OFF (or ON), ﬂashing.

Fig. 47B - SET FO2 GAS 2

(for Nitrox)

• A or M (< 2 sec) - to toggle between ON and OFF.

• S (< 2 sec) - to save the setting and revert to Set F Lead-in.

• S (2 sec), if the Set Point is not changed - to step back to Set FO2 Gas 3.

Fig. 48 - SET FO2 DEFAULT

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SET A GROUP (ALARMS), NORM/GAUG

Selections >> Aud > Depth > EDT > Turn > End > TLBG* > DTR* > PO2*

*Items apply to NORM only.

> Set Points remain as set until changed.

Set A Lead-in, information includes (Fig. 49):

> Graphics Goto and SET A.

• A (< 2 sec) - to step forward to SET U.

• M (< 2 sec) - to step back to SET F.

• S (< 2 sec) - to access Set Audible Alarm.

Fig. 49 - SET A LEAD-IN

Fig. 50 - SET AUD AL

Fig. 51 - SET DEPTH AL

Set Audible Alarm, information includes (Fig. 50):

> Graphics SEt and AUD AL.

> Set Point graphic ON (or OFF) ﬂashing.

• A or M (< 2 sec) - to toggle between ON and OFF.

• S (< 2 sec) - to save the setting and access Set Depth Alarm.

• S (2 sec), if no change - to revert to Set A Lead-in.

Set Depth Alarm, information includes (Fig. 51):

> Graphics SEt and DPTH AL.

> Set Point graphic OFF (or Depth value) ﬂashing with FT (or M) icon.

• A (hold) - to scroll upward through Set Points (8/sec)from OFF to 30 through 330 FT (10 through 100 M) in increments of

10 FT (1 M).

• A (< 2 sec) - to step upward through Set Points.

• M (< 2 sec) - to step back through Set Points.

• S (< 2 sec) - to save the setting and access Set EDT Alarm.

• S (2 sec), if no change - to revert to Set Audible.

Set EDT Alarm, information includes (Fig. 52):

> Graphics SEt and EDT AL.

> Set Point graphic OFF (or Time value) ﬂashing with min icon.

• A (hold) - to scroll upward through Set Points (8/sec) from OFF to 10 through 180 (min) in increments of 5 min.

• A (< 2 sec) - to step upward through Set Points.

• M (< 2 sec) - to step back through Set Points.

• S (< 2 sec) - to save the setting and access Set TLBG Alarm.

• S (2 sec), if no change - to revert to Set Depth Alarm.

Set TLBG Alarm (NORM), information includes (Fig. 53):

> Graphics SEt and TLBG AL.

> Set Point graphic OFF (or TLBG segments) ﬂashing.

Fig. 52 - SET EDT AL

• A (< 2 sec) - to step upward through Set Points from OFF to 1 through 4 segments.

• M (< 2 sec) - to step back through Set Points.

• S (< 2 sec) - to save the setting and access Set DTR Alarm.

• S (2 sec), if no change - to revert to Set EDT Alarm.

Set DTR Alarm (NORM), information includes (Fig. 54):

> Graphics SEt and DTR AL.

> Set Point graphic OFF (or Time value) ﬂashing with min icon.

Fig. 53 - SET TLBG AL

• A (hold) - to scroll upward through Set Points (8/sec) from OFF to 1 through 20 (min) in increments of 1 min.

• A (< 2 sec) - to step upward through Set Points.

• M (< 2 sec) - to step back through Set Points.

• S (< 2 sec) - to save the setting and access Set Turn Alarm.

• S (2 sec), if no change - to revert to Set TLBG Alarm.

Set Turn Alarm (TMT1 only), information includes (Fig. 55):

> Graphics SEt and TURN AL with Tank 1 icon.

> Set Point graphic OFF (or Pressure value) ﬂashing, with PSI (or BAR) icon.

Fig. 54 - SET DTR AL

• A (hold) - to scroll upward through Set Points (8/sec) from OFF to 1000 to 3000 PSI (70 to 205 BAR) in 250 PSI (5 BAR)

increments.

• A (< 2 sec) - to step upward through Set Points.

• M (< 2 sec) - to step back through Set Points.

• S (< 2 sec) - to save the setting and access Set End Alarm.

• S (2 sec), if no change - to revert to Set DTR Alarm.

Fig. 55 - SET TURN AL

(applies to TMT 1 only)

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Set End Alarm (TMT 1, 2, 3) information includes (Fig. 56):

> Graphics SEt and END AL with all Tank icons (1, 2, 3).

> Set Point graphic OFF (or Pressure value) ﬂashing, with PSI (or BAR) icon.

• A (hold) - to scroll upward through Set Points (8/sec) from 300 to 1500 PSI (20 to 105 BAR) in 100 PSI (5 BAR) increments.

• A (< 2 sec) - to step upward through Set Points.

• M (< 2 sec) - to step back through Set Points.

• S (< 2 sec) - to save the setting and access Set PO2 Alarm.

• S (2 sec), if no change - to revert to Set Turn Alarm.

Fig. 56 - SET END AL

(applies to TMT in use)

Set PO2 Alarm (NORM), information includes (Fig. 57):

> Graphic SEt and AL.

> PO2 value (ATA) ﬂashing with icon.

• A (< 2 sec) - to step upward through Set Points from 1.20 to 1.60.

• M (< 2 sec) - to step back through Set Points.

• S (< 2 sec) - to save the setting and revert to Set A Lead-in.

• S (2 sec), if no change - to revert to Set End Alarm.

Fig. 57 - SET PO2 AL

SET U GROUP (UTILITIES)

Selections >> Wet > Units > DS* > SS* > Algo* > CF* > Glo > SR > TMT 1 > TMT 2 > TMT 3.

*Items apply to NORM only.

> Set Points remain as set until changed.

Set U Lead-in, information includes (Fig. 58):

> Graphics Goto and SET U.

• A (< 2 sec) - to step forward to Select DIVE OP mode.

• M (< 2 sec) - to step back to SET A.

• S (< 2 sec) - to access Set Wet.

Fig. 58 - SET U LEAD-IN

Set Wet Activation, information includes (Fig. 59):

> Graphics SEt and WET.

> Set Point graphic ON (or OFF) ﬂashing.

• A or M (< 2 sec) - to toggle between ON and OFF.

• S (< 2 sec) - to save the setting and access Set Units.

• S (2 sec), if no change - to revert to SET U.

Fig. 59 - SET WET

ACTIVATION

Set Units, information includes (Fig. 60):

> Graphic SEt and UNIT.

> Set Point icons FT and PSI (or M and BAR) ﬂashing.

• A or M (< 2 sec) - to toggle between FT/PSI and M/BAR.

• S (< 2 sec) - to save the setting and access Set DS if NORM, or Set Glo if GAUG.

• S (2 sec), if no change - to revert to Set Wet.

Set DS (NORM Deep Stop), information includes (Fig. 61):

> Graphic SEt and DEEP St with Stop arrow/bar icons.

> Set Point graphic ON (or OFF) ﬂashing.

Fig. 60 - SET UNITS

• A or M (< 2 sec) - to toggle between ON and OFF.

• S (< 2 sec) - to save the setting and access Set SS.

• S (2 sec), if no change - to revert to Set Units.

When set On, the Deep Stop feature activates when descent is made to a depth deeper than 80 FT (24 M) during No Deco.

A Stop Depth is calculated to be 1/2 the Max Depth achieved, then upon ascent to within 10 FT (3 M) below that depth, the Deep Stop screen is

displayed in place of the No Deco Main.

Fig. 61 - SET DS

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Set SS (NORM Safety Stop), information includes (Fig. 62):

> Graphics SEt and SAFE St with Stop arrow/bar icons.

> Set Point graphic ON (or OFF) ﬂashing.

- or -

> Graphic SEt with Stop arrow/bar icons.

> Set Point graphic ON TMR ﬂashing.

• A (< 2 sec) - to step forward through the Set Points (SAFE St OFF, SAFE St ON, TMR ON).

• S (< 2 sec) - to save the setting.

• S (2 sec), if no change - to revert to Set DS.

>> If SS OFF (Fig. 60A, page 58) or TMR ON (Fig. 60B) is selected, operation accesses Set Algorithm.

>> If SS ON is selected, Stop Depth and Time is displayed with min and sec icons, Time digits ﬂashing (Fig. 60C).

• A or M (< 2 sec) - to toggle Stop Time Set Points between 3:00 and 5:00 (min:sec).

• S (< 2 sec) - to save the Time setting and ﬂash Depth digits.

• A (< 2 sec) - to step up through Depth Set Points of 10, 15, and 20 FT (or 3, 4, 5, and 6 M).

• M (< 2 sec) - to step back through Set Points.

• S (< 2 sec) - to save the setting and access Set Algorithm.

Set Algorithm (NORM), information includes (Fig. 63):

> Graphics SEt and ALGO.

> Set Point graphic PZ+ (or DSAT) ﬂashing.

Fig. 62 - SET SS

• A or M (< 2 sec) - to toggle between DSAT and PZ+.

• S (< 2 sec) - to save the setting and access Set CF.

• S (2 sec), if no change - to revert to Set SS.

This feature allows selection of the Algorithm to be used for nitrogen and oxygen calculations for Plan and Dive allowed time values.

The setting locks in for 24 hours after NORM dives.

Set CF (Conservative Factor, NORM), information includes (Fig. 64):

> Graphics SEt and CF with icon.

> Set Point graphic ON (or OFF) ﬂashing.

Fig. 63 - SET ALGORITHM

• A or M (< 2 sec) - to toggle between ON and OFF.

• S (< 2 sec) - to save the setting and access Set Glo.

• S (2 sec), if no change - to revert to Set Algorithm.

When CF is set On, NDLs are reduced to values equivalent to those that would be available at the next higher 3000 foot (915 meter) Altitude.

Refer to tables in back of manual.

Set Glo (Backlight Duration), information includes (Fig. 65):

> Graphics SEt and GLO.

> Time Set Point value ﬂashing with sec icon.

Fig. 64 - SET CF

• A (< 2 sec) - to step upward through Set Points of 0, 5, and 10 (sec) 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 access Set SR.

• S (2 sec), if no change - to revert to Set CF.

Backlight Duration is the time the backlight will remain On after the L button is released (0 = no additional time).

Set SR (Sampling Rate), information includes (Fig. 66):

> Graphics SEt and SR.

> Time Set Point value ﬂashing with sec icon.

Fig. 65 - SET GLO

• A (< 2 sec) - to step upward through Set Points of 2, 15, 30, and 60 (sec) 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 access Set TMT 1.

• S (2 sec), if no change - to revert to Set Glo.

Sampling Rate is the frequency at which data is sampled and stored for download to the OceanLog PC Interface program.

Fig. 66 - SET SR

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Set TMT 1, information includes (Fig. 67):

> Graphics SEt and TMT1 with Tank 1 icon.

> Set Point graphic OFF (or ON) ﬂashing.

• A (< 2 sec) - to step forward through the selections of OFF, ON, and SN.

• M (< 2 sec) - to step back through the selections.

• S (< 2 sec) - to save the selection.

• S (2 sec), if no change - to step back to Set SR.

Fig. 67 - SET TMT 1

(Set TMT 2 & 3 similar)

> If OFF is selected, the Receiver is disabled, Set TMT 2 , and Set TMT 3 will be bypassed, and operation reverts to the Set U

Lead-in screen.

> If ON is selected, the Receiver is enabled and operation advances to Set TMT 2.

> If SN is selected, the Set TMT 1 SN screen is displayed.

Set TMT 1 SN (Link Code), information includes (Fig. 68):

> Graphics SEt and TMT1 SN with Tank 1 icon.

> Serial Number (Link Code up to 6 digits), left digit ﬂashing.

• A (< 2 sec) - to step upward through the ﬁrst digit's Set Point values one at a time.

• M (< 2 sec) - to step back through Set Points one at a time.

Fig. 68 - SET TMT 1 SN

(Set TMT 2 & 3 SN similar)

• S (< 2 sec) - to save the ﬁrst digit and ﬂash the second.

**Repeat A/M and S operations to set the other digits.

• When S is pressed to save the last (right) digit, operation reverts to the Set TMT 1 screen with SN ﬂashing.

>> Set TMT 2 & 3 are similar to Set TMT 1.

Note that Figures 69 to 72 are no longer used.

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ATOM 3.0 OPERATING MANUAL

SELECT DIVE OP (OPERATING) MODE

Selections >> NOR > GAU > FRE.

Lead-in, information includes (Fig. 73):

> Graphics Goto, SEL, and DIVE OP.

• A (< 2 sec) - to step forward to History.

• M (< 2 sec) - to step back to SET U.

• S (< 2 sec) - to access Select Dive Op Mode.

Fig. 73 - SET M LEAD-IN

Select Dive Op Mode, information includes (Fig. 74):

> Graphics SEL and DIVE OP.

> Mode graphic ﬂashing.

• A (< 2 sec) - to step forward through selections of NOR, GAU, and FRE.

• M (< 2 sec) - to step back through selections.

• S (< 2 sec) - to save the selection and revert to that mode's Surface Main screen.

• S (2 sec), if no change - to revert to the Lead-in.

NOR = Normal (scuba with Ni-O2 calculations).

GAU = Gauge (scuba with depth & time).

FRE = Free (breath hold dives).

Fig. 74 - SELECT DIVE

OPERATING MODE

HISTORY MODE (NORM/GAUG)

History is a summary of basic data recorded during all NORM and GAUG dives conducted.

History 1, information includes (Fig. 75):

> Total number dives recorded (up to 9999), 0 if no dive yet. At top of screen, no icons.

> Total dive time recorded (up to 9999 hours) with graphic Hr and EDT icon.

> Graphic HIST.

Fig. 75 - HISTORY 1

• A (< 2 sec) - to step forward to Serial Number.

• M (< 2 sec) - to step back to Select Dive OP Mode.

• S (< 2 sec) - to access History 2.

History 2, information includes (Fig. 76):

> Graphic SEA (or EL2 to EL7), highest Altitude at which a dive was conducted.

> Max Depth recorded (to 330 FT/100 M) with MAX and FT (or M) icons.

> Longest dive time recorded during a single dive (up to 599 min) with EDT and min icons.

> Lowest Temperature recorded while in dive mode with icon and graphic F (or C).

Fig. 76 - HISTORY 2

• S (< 2 sec) to revert to History 1.

SERIAL NUMBER

This information should be recorded and kept, it will be required in the event that your unit requires factory service.

Serial Number, information includes (Fig. 77):

> Graphic SN with the factory programmed serial number.

> Graphics REV - and 1A (or higher), indicating the Firmware revision level currently installed in the unit.

• A (< 2 sec) - to step forward to BATT/TMT Status.

• M (< 2 sec) - to step back to History 1.

BATTERY/TMT STATUS

This feature activates the unit's receiver, then after 2 seconds, starts an automatic scroll displaying a sequence of Status screens.

Fig. 77 - SERIAL NUMBER

Lead-in, information includes (Fig. 78):

> Graphics Goto, bAtt, and TMT.

• A (< 2 sec) - to step forward to Surface Main.

• M (< 2 sec) - to step back to SN.

• S (< 2 sec) - to activate the receiver and start the sequence.

Sequence of Status screens >>

> ATOM's Battery Status for 3 sec.

> TMT 1 Status for 3 sec.

Fig. 78 - BATT/TMT

STATUS LEAD-IN

> TMT 2 Status for 3 sec.

> TMT 3 Status for 3 sec.

> revert to BATT/TMT Lead-in.

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ATOM Batt Status, information includes (Fig. 79):

> Graphics bAtt and ATOM.

> Graphic Good (if => 2.75 v) or LOW (if < 2.75 v).

> Battery icon, if Low (< 2.75 v), ﬂashing (if < 2.50 v).

TMT Status, information includes:

> Graphics bAtt and Good (or LOW) (Fig. 80).

> Tank Pressure with PSI (or BAR), Link, and Tank 1 (or 2, 3) icons, if the TMT is active and reporting.

- or -

> Graphics Not AVAIL with Tank 1 (or 2, 3) icon (Fig. 81), if the TMT is not in use or not reporting (no link signal).

Fig. 79 - ATOM BATT STATUS

Fig. 80 - TMT STATUS

Fig. 81 - TMT STATUS

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ATOM 3.0 OPERATING MANUAL

DIVE MODE

FEATURES

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ATOM 3.0 OPERATING MANUAL

NORM DIVE MODE STRUCTURE

Surface Mode

2 FT (0.6 M)

for 1 sec

5 FT (1.5 M)

for 5 sec

Safety Stop

Main

ALTs

< 2 sec

Dive Mode

Deep Stop

Main

< 2 sec

2 sec

< 2 sec

closure

GAS/TMT

Switching

ack Alarms

Backlight

DIVE

MAIN

< 2 sec

2 sec

ALTs

DS Preview

TRANSMITTER SIGNAL RECEPTION GUIDE

BEST

Reception

Area

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 ATOM 3.0

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 ATOM receives the signals when it is positioned within a zone parallel to or at a 45 degree angle to the TMT

as illustrated.

The ATOM 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 ATOM 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 ATOM out of the signal pattern of the TMT, resulting in a temporary loss of the Link

signal. The Link will be restored within 4 seconds after the ATOM is moved back into its correct position.

An interruption may also occur while the ATOM is within 3 feet (1 meter) of a running DPV. The Link will be restored within 4

seconds after the ATOM 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 Pressure value and Link icon will ﬂash (Fig. 82).

Fig. 82 - LOST LINK

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ATOM 3.0 OPERATING MANUAL

BAR GRAPHS

The ATOM features 2 speciﬁc bar graphs.

> The one on the left represents nitrogen loading. It is referred to as the TLBG (Tissue Loading Bar Graph).

> The one on the right represents ascent rate. It is referred to as the VARI (Variable Ascent Rate Indicator).

TLBG (NORM/FREE)

The TLBG represents your relative No Deco (Fig. 83a) or Deco status (Fig. 84a). The lower 4 segments represent No Deco status

and the top one indicates a Deco condition.

Fig. 83 - NO DECO

As your Depth and Elapsed Dive Time increase, segments add.

As you ascend, segments recede indicating that additional No Deco time is available.

The ATOM monitors 12 different nitrogen compartments simultaneously and the TLBG displays the one that is in control of your

dive at any given time.

VARI (NORM/GAUG)

The VARI (Fig. 85a) provides a visual representation of ascent speed (i.e., an ascent speedometer).

The segments represent two sets of speeds which change at a reference depth of 60 FT (18 M). Refer to the chart.

When ascent is too fast, the audible will sound, and all VARI segments will ﬂash (Fig. 86) until ascent is slowed.

Fig. 84 - DECO

WARNING: When deeper 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).

Deeper than 60 FT (18 M)

60 FT (18 M) & Shallower

VARI

Segments

Ascent Rate

FPM

VARI

Segments

Ascent Rate

FPM

MPM

0 - 3

Fig. 85 - DIVE MAIN

(Ascent normal)

0 - 20

0 - 6

0 - 10

21 - 30

31 - 40

41 - 50

51 - 60

60 +

6.1 - 9

9.1 - 12

12.1 - 15

15.1 - 18

18 +

11 - 15

16 - 20

21 - 25

26 - 30

30 +

3.1 - 4.5

4.6 - 6

6.1 - 7.5

7.6 - 9

9 +

ALGORITHM

The ATOM is conﬁgured with 2 algorithms which allows you to choose which set of NDLs (No Deco Limits) will be used for nitro-

gen/oxygen (Ni/O2) calculations and displays relating to Plan and Dive Time Remaining (DTR).

You can select to use either the DSAT or the PZ+. The selection will lock in for 24 hours after the last dive.

Fig. 86 - DIVE MAIN

(Ascent Too Fast)

DSAT has been the standard used by Oceanic in all of its dive computers until this time. It features NDLs that are based

on exposures and test data which also formed validation for the PADI RDP. It imposes restrictions for repetitive Deco dives,

considered more risky.

PZ+ (Pelagic Z+) performance is based on Buhlmann ZHL-16c. It features NDLs that are considerably more conservative

especially at shallower depths.

To create even greater margins of safety with respect to decompression, a Conservative Factor as well as No Deco Deep and

Safety Stops can be included for No Deco dives.

CONSERVATIVE FACTOR (CF)

When the CF is set On, the allowable dive times, which are based on the algorithm selected and used for Ni/O2 calculations

and displays relating to Plan and Dive Time Remaining, will be reduced to the values available at the altitude level that is 3,000

feet (915 meters) higher. Refer to the charts in the back of this manual for times.

DEEP STOP (DS), NORM No Deco only

When the DS selection is set On, it will trigger during NORM No Deco dives when you descend to 80 FT (24 M), then calculate

(and continually update) a Stop Depth equal to 1/2 the Max Depth.

While 10 FT (3 M) deeper than the calculated DS, you will be able to access a DS Preview screen that will display the current DS

Stop Depth/Time.

Upon initial ascent to within 10 FT (3 M) below the calculated Stop Depth, a DS screen displaying a Stop Depth at 1/2 the Max

Depth will appear with a Countdown Timer beginning at 2:00 (min:sec) and counting down to 0:00.

> 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 DS Main display and the DS feature will be disabled for the remainder of

that dive. There is no Penalty if the DS is ignored.

> In the event that you enter Deco, exceed 190 FT (57 M), or a High O2 condition (=> 80%) occurs, the DS will be disabled

for the remainder of that dive.

> The DS is disabled during a High PO2 Alarm condition (=> Set Point).

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SAFETY STOP (SS), NORM No Deco only

If set On:

Upon ascent to within 5 FT (1.5 M) deeper than the SS Depth set for 1 second on a No Deco dive in which Depth exceeded

30 FT (9 M) for 1 second, a beep will sound and a SS at the Depth set will appear on the Main display with a countdown

beginning at the SS Time set and counting down to 0:00 (min:sec).

• If the SS was set for OFF or Timer, the display 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 screen will replace the SS Main 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 SS

Main will appear again upon ascent to within 5 FT (1.5 M) deeper than the SS Depth set for 1 second.

• If you ascend 2 FT (0.6 M) shallower than the SS Depth for 10 seconds prior to completing it, the SS will be canceled for the

remainder of that dive.

• There is no Penalty if you surface prior to completing the SS or ignore it.

If set for Timer On:

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, 1 beep

will sound and a Run Timer will appear (if set On) displaying 0:00 (min:sec) until started.

• If the SS was set for Off or On, the Timer display will not appear.

• If you descend deeper than 30 FT (9 M) for 10 seconds, the No Deco Main will replace the 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 SS

Timer is active, the SS Timer will be disabled for the remainder of that dive.

DIVE TIME REMAINING (DTR)

The ATOM constantly monitors No Deco status (nitrogen loading) and O2 accumulation, and will use whichever time is the least

available to calculate DTR.

Fig. 87 - NO DECO MAIN

(NDC is DTR)

Either NDC or OTR is displayed as the main time (Fig. 87). The NDC or O2 icon will signify which time is being displayed.

NDC (No Deco Dive Time Remaining)

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.

• 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 (Fig. 87a) and graphically as the TLBG (Fig. 87b).

• 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.

Fig. 88 - NO DECO ALT 2

(O2 data)

OTR (O2 Dive Time Remaining)

When set for Nitrox operation, O2 during a dive is displayed on an ALT screen as a % of total exposure allowed (Fig. 88a).

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 (Fig. 89a), with the O2 icon. NDC will then be displayed on an ALT screen that can be accessed.

Fig. 89 - NO DECO MAIN

(OTR is DTR)

ATR (Air Time Remaining)

The ATOM 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 the present depth and still safely surface with the tank pressure reserve that you selected during

setup (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 ATOM will recognize as a change and adjust ATR accordingly.

Fig. 90 - DIVE MAIN

(ATR as normally seen)

ATR is displayed numerically (from 0 to 199* min) on the Dive Main screen (Fig. 90a).

*ATR remains at 199 min when => 199 minutes.

ATR Alarm

When ATR (Air Time Remaining) decreases to 5 minutes, the audible will sound and the ATR digits will ﬂash (Fig. 91). 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 ATOM 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. 91 - DIVE MAIN

(ATR Alarm)

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NORM

DIVE MODES

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ATOM 3.0 OPERATING MANUAL

NO DECO DIVE MAIN, information includes (Fig. 92):

> Current Depth with FT (or M) icon.

> DTR (min) with NDC (or O2) icon, up to 199.

> Elapsed Dive Time with EDT and min icons, up to 199.

> Tank Pressure with Link and PSI (or BAR) icons.

> Air Time Remaining with ATR and min icons, up to 199.

> TLBG, and VARI (while ascending).

> NX, (PZ+), CF, Gas/TMT, DS icons - if they apply.

Fig. 92 - NO DECO MAIN

• A (< 2 sec) - to access ALTs.

• A (2 sec) - to access Deep Stop Preview, if triggered.

• M (2 sec) - to access Gas/TMT Switching.

• S (< 2 sec) - to acknowledge/silence alarms.

• L (press) - to activate Backlight.

Upon ascending to 2 FT (0.6 M) during a dive, Surface Interval time will be displayed with the SURF icon ﬂashing for the ﬁrst 10

minutes and NDC will be displayed as 2 dashes (Fig. 93).

• A (< 2 sec) - to access Dive ALTs.

• M (2 sec) - to access Gas/TMT Switching.

• L (press) - to activate Backlight.

Fig. 93 - NO DECO MAIN

(during < 10 min on surface)

>> After 10 minutes elapse, the display will revert to the Surface Main and full access will be given to NORM Surface items.

>> If a descent is made to 5 FT (1.5 M) for 5 seconds, the dive will be continued.

>> Surface time will not be added to Dive Time.

No Deco Alt 1, information includes (Fig. 94):

> Max Depth with MAX and FT (or M) icons.

> Time of Day (hr:min_sec), with AM (or PM) icon if 12 Hour Format, no icon if 24 Hour Format.

> Temperature with ° icon and graphic F (or C).

• A (< 2 sec) - to access ALT 2 (if Nitrox).

• Revert to Main in 5 sec, if A is not pressed.

• L (press) - to activate Backlight.

Fig. 94 - NO DECO ALT 1

No Deco Alt 2 (only if Nitrox), information includes (Fig. 95):

> O2 accumulated* with O2% icon.

*This is the % of the per dive or per day allowed max limit of 300 OTU.

> Current PO2 value (ATA) with PO2 icon.

> FO2 Set Point (21 to 100%) for gas in use with FO2 icon.

> Gas (tank) icon for gas in use (1, 2, 3).

• 5 sec or A (< 2 sec)** - to revert to Main.

• L (press) - to activate Backlight.

Fig. 95 - NO DECO ALT 2

**When OTR is displayed on the Main (which is only when it is < NDC), NDC will be displayed as the ALT 3 screen which

can be accessed from ALT 2 by A (< 2 sec).

Deep Stop Preview, information includes (Fig. 96):

> DS icon with graphic PREV.

> Current Depth with FT (or M) icon.

> Stop Depth* with FT (or M) icon, Stop icon (arrows, bar), and Stop Time as 2_00 with min and sec icons.

*Calculated as 1/2 Max Depth after depths => 80 FT (24 M).

Fig. 96 - DS PREVIEW

• 5 sec or A (< 2 sec) - to revert to Main.

• L (press) - to activate Backlight.

DEEP STOP MAIN, information includes (Fig. 97):

> DS icon.

> Current Depth with FT (or M) icon.

> Stop Depth with FT (or M) icon, Stop icon (arrows, bar), and Stop Time (counting down) with min and sec icons.

> Tank Pressure with Link and PSI (or BAR) icons.

> Air Time Remaining with ATR and min icons.

> TLBG.

Fig. 97 - DS MAIN

> NX, (PZ+), CF, Gas/TMT icons - if they apply.

• A (< 2 sec) - to access ALTs**.

• M (2 sec) - to access Gas/TMT Switching.

• S (< 2 sec) - to acknowledge/silence alarms.

• L (press) - to activate Backlight.

** DS features up to 3 ALT displays which are similar to the No Deco Main, ALT1, and ALT2 displays, respectively.

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ATOM 3.0 OPERATING MANUAL

SAFETY STOP MAIN (On), information includes (Fig. 98):

> Current Depth with FT (or M) icon.

> Stop Depth with FT (or M) icon, Stop icon (arrows, bar), and Stop Time (counting down) with min and sec icons.

> Tank Pressure with Link and PSI (or BAR) icons.

> Air Time Remaining with ATR and min icons.

> TLBG.

> NX, (PZ+), CF, Gas/TMT icons - if they apply.

• A (< 2 sec) - to access ALTs**.

Fig. 98 - SS MAIN

(On - Depth/Time set)

• M (2 sec) - to access Gas/TMT Switching.

• S (< 2 sec) - to acknowledge/silence alarms.

• L (press) - to activate Backlight.

When the SS is set for Timer, the graphic rt is displayed with Run Time (Fig. 99) counting up from 0_00 to 9_59 (min_sec).

• A (< 2 sec) - to access ALTs**.

• M (2 sec) - to access Gas/TMT Switching.

• S (< 2 sec)* - to start/stop Timer, and acknowledge alarms.

• S (2 sec)*, when Timer is stopped - to reset it to 0_00.

* Timer operation is blocked when S is pressed to silence alarms.

** SS features up to 3 ALT displays which are similar to the No Deco Main, ALT1, and ALT2 displays, respectively.

Fig. 99 - SS MAIN

(set for Run Timer)

DECOMPRESSION

Decompression mode activates when theoretical No Decompression time and depth limits are exceeded.

Upon entry into Deco, the audible will sound and the alarm LED will ﬂash. The full TLBG and Up Arrow icon will ﬂash (Fig. 100)

until the audible is silenced.

• S (< 2 sec) - to silence Audible.

> Once within 10 FT (3 M) below the required Stop Depth (stop zone), the Up Arrow will stop ﬂashing and both Arrows with

Bar (the Stop icon) will be displayed solid.

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.

Fig. 100 - DECO ENTRY

(during audible)

Deco Stop Main, information includes (Fig. 101):

> Current Depth with FT (or M) icon.

> Stop Depth with FT (or M) icon.

> Stop icon (arrows/bar).

> Stop Time with min icon, up to 99 then 2 dashes ( - - ).

> Tank Pressure with Link and PSI (or BAR) icons.

> Air Time Remaining with ATR and min icons.

> Full TLBG.

> NX, (PZ+), CF, Gas/TMT icons - if they apply.

• A (< 2 sec) - to access ALTs.

Fig. 101 - DECO STOP MAIN

• M (2 sec) - to access Gas/TMT Switching.

• S (< 2 sec) - to acknowledge/silence alarm.

• L (press) - to activate Backlight.

Deco Stop Alt 1, information includes (Fig. 102):

> Max Depth with MAX and FT (or M) icons.

> Time of Day (hr:min_sec) with AM (or PM) icon.

> Temperature with ° icon and graphic F (or C).

• A (< 2 sec) - to access ALT 2.

• Revert to Main in 5 sec, if A not pressed.

• L (press) - to activate Backlight.

Fig. 102 - DECO STOP ALT 1

Deco Stop Alt 2, information includes (Fig. 103) :

> Elapsed Dive Time with EDT and min icons, up to 199.

> TAT (min) with TAT and min icons, up to 199.

*TAT (Total Ascent Time) 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 (if Nitrox), or revert to Main if Air.

• Revert to Main in 5 sec, if A not pressed.

• L (press) - to activate Backlight.

Fig. 103 - DECO STOP ALT 2

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Deco Stop Alt 3 (if Nitrox), information includes (Fig. 104):

> O2 accumulated* with O2% icon.

*This is the % of the per dive or per day allowed max limit of 300 OTU.

> Current PO2 value (ATA) with PO2 icon.

> FO2 Set Point (21 to 100%) for gas in use with FO2 icon.

> NX icon.

> Gas (tank) icon for gas in use (1, 2, 3).

• 5 sec or A (< 2 sec) - to revert to Main.

• L (press) - to activate Backlight.

Fig. 104 - DECO STOP ALT 3

CV (CONDITIONAL VIOLATION)

Upon ascent above the required Deco Stop Depth, operation will enter CV during which no off gassing credit will be given.

The audible will sound and the alarm LED will ﬂash. The full TLBG and Down Arrow icon will ﬂash (Fig. 105) until the audible is

silenced, then the TLBG will be solid.

• S (< 2 sec) - to silence audible.

> Down Arrow icon continues to ﬂash until descent to below required stop depth (within stop zone), then full Stop icon (stop

bar with both arrows) will be on solid.

Fig. 105 - CV MAIN

(after Audible)

ALTs are similar to

those for Deco.

If you descend deeper than the required Deco Stop before 5 minutes elapse, Deco operation will continue with no off gassing

credit given for time above the Stop.

Instead, for each minute above the Stop 1 and 1/2 (1.5) minutes of penalty time will be added to required Stop Time.

> The added penalty (deco) time will have to be worked off before obtaining off gassing credit.

> Once the penalty time is worked off, and off gassing credit begins, required Deco Stop Depths and Time will decrease

toward zero. The TLBG will recede into the No Deco zone and operation will revert to No Deco mode.

DV 1 (DELAYED VIOLATION 1)

If you remain shallower than a Deco Stop Depth for more than 5 minutes, operation will enter DV1 which is a continuation of

CV* with penalty time still being added.

Fig. 106 - DV1 MAIN

(during Audible)

The audible will sound and the full TLBG will ﬂash (Fig. 106) until it is silenced.

*The difference is that 5 minutes after surfacing from the DV1 dive, operation will now enter Violation Gauge Mode (VGM).

> The audible will silence after 10 seconds.

> Down Arrow icon continues to ﬂash until descent to below required Stop Depth, then full Stop icon will be on solid.

DV 2 (DELAYED VIOLATION 2)

If the calculated Deco obligation requires a Stop Depth between 60 FT (18 M) and 70 FT (21 M), operation will enter DV2.

Fig. 107 - DV2 MAIN

The audible will sound and the alarm LED will ﬂash. The full TLBG will ﬂash until the audible is silenced.

> The audible will silence after 10 seconds.

> Up Arrow icon ﬂashes if 10 FT (3 M) deeper than the required Stop Depth.

> Once within 10 FT (3 M) of and below the required Stop Depth (Fig. 107), the Stop icon (both Arrows with Stop Bar) will be

displayed solid.

DV 3 (DELAYED VIOLATION 3)

If you descend deeper than the MOD*, the audible will sound and the alarm LED will ﬂash.

Fig. 108 - DV 3 MAIN

Also, the graphic UP will ﬂash in place of Current Depth (Fig. 108).

NDC and Max Depth will only indicate dashes signifying that you are too deep.

*MOD is the Max Operating Depth at which the unit can properly perform calculations or provide accurate display information. Refer to the speciﬁcations in the

back.

Upon ascending above the MOD, Current Depth will be restored, however, Max Depth will continue to be displayed as dashes

for the remainder of that dive. The Log for that dive will also display dashes for Max Depth.

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alt w/

VGM (VIOLATION GAUGE MODE)

During NORM dives, operation will enter VGM when Deco requires a Stop Depth greater than 70 FT (21 M). It will also enter

VGM if Deco is activated during a dive in FREE mode, described later.

Operation would then continue in VGM during the remainder of that dive and for 24 hours after surfacing.

VGM turns the unit into a digital instrument without any decompression or oxygen related calculations or displays.

Upon activation of VGM, the audible will sound and the alarm LED will ﬂash. The graphics VIO and UP will alternate until on the

surface. The full TLBG will ﬂash until the audible is silenced after 10 seconds, then it will be removed.

Fig. 109 - VGM MAIN

(after Audible)

VGM Dive Main, information includes (Fig. 109) -

> Current Depth with FT (or M) icon.

> Graphics VIO and UP, alternating.

alt w/

NOR

> Elapsed Dive Time with EDT and min icons.

> Tank Pressure with Link and PSI (or BAR) icons.

> Air Time Remaining with ATR and min icons.

> VARI while ascending.

> NX, (PZ+), CF, Gas/TMT icons - if they apply.

• A (< 2 sec) - to access ALTs (similar to Deco).

• M (2 sec) - to access Gas/TMT Switching.

• L (press) - to activate Backlight.

Fig. 110 - VGM MAIN

(on surface > 10 min)

VGM on Surface

Upon surfacing, the VGM Dive Main will remain on display for 10 minutes with Surface Interval Time displayed in place of Cur-

rent Depth with the SURF icon ﬂashing. The graphic VIO will also still be displayed ﬂashing.

Operation will also enter VGM 5 minutes after surfacing from a dive in which a Delayed Violation occurred.

After 10 minutes elapse, the graphic VIO alternates with NOR (Fig. 110) until 24 hours elapse with no dives. Watch functions

are as normal.

> A full 24 hour continuous surface interval must then be served before all dive computer functions are restored.

> During that 24 hours, VGM does not allow access to the Set F, Plan, Dsat, and FREE Mode features/screens.

> The Fly countdown indicates time remaining before normal operation can resume with full features and functions.

HIGH PO2 (NORM ONLY)

Warning >> at Alarm Set Point value minus 0.20 (1.00 to 1.40).

Alarm >> at Set Point value, except in Deco then only at 1.60.

When PO2 (partial pressure of oxygen) increases to the Warning level; the audible sounds, during which the Up Arrow icon will

ﬂash (in place of DTR), and the PO2 value will ﬂash (in place of Pressure) until the audible is silenced (Fig. 111).

• S (< 2 sec) - to acknowledge alarm.

> When the audible is silenced, DTR is restored and the PO2 value will alternate with Pressure until PO2 decreases below the

Warning level.

If PO2 continues to increase and reaches the Alarm Set Point; the audible sounds again, during which the Up Arrow icon and

PO2 value will ﬂash (in place of DTR and Pressure).

> When the audible is silenced, the Up Arrow and PO2 value will alternate with NDC and Pressure until PO2 decreases

below the Alarm level.

Fig. 111 - PO2 WARNING

(during audible)

PO2 Alarm Main, information includes (Fig. 112) -

> Current Depth with FT (or M) icon

> Up Arrow icon, ﬂashing (in place of DTR) until the audible is silenced, then they alternate until < Set Point.

> PO2 value (ATA) with PO2 icon, ﬂashing (in place of Pressure) until the audible is silenced, then they alternate until < Set

Point.

> TLBG with icon

> VARI while ascending

> (PZ+), CF, Gas icons - those that apply

Fig. 112 - PO2 ALARM

(during audible)

• A (< 2 sec) - to access ALTs (similar to those for No Deco).

• M (2 sec) - to access Gas/TMT Switching.

• L (press) - to activate Backlight.

alt w/

Pressure

High PO2 during Deco (Fig. 113)

The PO2 alarm that was set does not apply when in Deco.

> If PO2 reaches 1.60 while at a Deco Stop, the PO2 value with icon will alternate with Pressure once each minute*.

*PO2 will be displayed for 10 seconds, then Pressure will be displayed for 50 seconds once each minute until PO2 decreases below 1.60, then PO2 will not be

displayed.

Fig. 113 - PO2 ALARM

(while in Deco)

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HIGH O2 (NORM only)

Warning >> at 80 to 99% (240 OTU).

Alarm >> at 100% (300 OTU).

When O2 reaches the Warning level (80%); the audible sounds during which the O2 value with O2% icon will ﬂash (in place of

DTR) (Fig. 114), then DTR will be restored. The O2 icon will remain on ﬂashing (if OTR is DTR) until O2 is < 80%.

If O2 reaches the Alarm level (100%); the audible sounds again, the graphic UP will alternate with the O2 value until on the

surface (Fig. 115).

Fig. 114 - O2 WARNING

(during audible)

• S (< 2 sec) - to acknowledge/silence alarm.

• A (< 2 sec) - to access ALTs (similar to those for No Deco).

• M (< 2 sec) - to access Gas/TMT Switching.

• L (press) - to activate Backlight.

alternate

with UP

High O2 during Deco

When O2 reaches the Warning Level (80%); the audible sounds during which the O2 value with O2% icon will ﬂash (in place of

Stop Depth/Time until the audible is silenced, then Stop Depth/Time will be restored.

• S (< 2 sec) - to acknowledge/silence alarm.

When O2 reaches 100%, the audible sounds and the O2 value with O2% icon will alternate with the graphic UP until on the

surface (Fig. 116). The full TLBG remains on solid as a reminder of Deco.

Fig. 115 - O2 ALARM MAIN

(No Deco)

alt w/

• S (< 2 sec) - to acknowledge/silence alarm.

• A (< 2 sec) - to access ALTs (similar to those for Deco).

• M (< 2 sec) - to access Gas/TMT Switching.

• L (< 2 sec) - to activate Backlight.

High O2 on Surface

Upon ascent to 2 FT (0.6 M) for 1 second (surfacing), the Dive Main screen is displayed for 10 minutes with access to the Dive

ALTs allowed. Surface Interval Time with the SURF icon ﬂashing (Fig. 117) will be displayed in place of Depth.

Fig. 116 - O2 ALARM MAIN

(during Deco)

> If O2 is 100%, the value will ﬂash on the Main until it is < 100%, then it will be replaced with dashes (if Violation) until 10

minutes elapse, then the graphic NOR.

> If you surface due to 100% O2 without having completed the Deco obligation, the full TLBG and O2 value (100%) will ﬂash

for the ﬁrst 10 minutes, then operation will enter VGM.

> Access to Dive ALTs and Gas/TMT Switching is allowed during the ﬁrst 10 minutes, then access to the other NORM Surface

group selections is allowed.

Fig. 117 - O2 ALARM MAIN

(on surface, No Deco)

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ATOM 3.0 OPERATING MANUAL

GAS/TMT

SWITCHING

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SWITCH ROUTINE OVERVIEW

> Can only switch when Dive Main screens are displayed.

> Cannot switch on surface, except during ﬁrst 10 minutes.

> Cannot switch during alarms.

> All dives begin with Gas/TMT 1 (default on surface).

> Defaults to Gas/TMT 1, 10 minutes after surfacing.

• M (2 sec), while a Dive Main is displayed - to access.

• No button action (10 sec) - to revert to Main.

Fig. 118 - NORM GAS

SWITCH PREVIEW

NORM Switch Preview, information includes (Fig. 118):

> Graphics Goto and GAS 1 (or 2, 3) with # icon.

> Graphic AIR, or PO2 calculated and FO2 set for that Gas with PO2 and FO2 icons.

> Gas (tank) icon (1, 2, or 3) for that Gas (TMT).

• M (2 sec) - to step through Preview screens.

• S (2 sec) - to ﬂash the graphic GAS # 1 (2, 3), then -

• S (2 sec) - to conﬁrm a Switch to that Gas (after 2 sec), display a TMT Search screen (Fig. 119) for 10 sec, then revert to

Main with that new Gas (and TMT) selected.

If the Gas/TMT are not switched to the same tank being used, ATR will increase to maximum after 1 minute without a change in Pressure.

Fig. 119 - TMT SEARCH

(Use set for SELF)

Gas Switch Warning

If the switch to a new Gas would result in PO2 => 1.60, the audible will sound and a warning message will ﬂash (Fig. 120) until

it is silenced.

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, Up indication will not be given (you control action to be taken).

GAUG Switch Preview, information includes (Fig. 121):

> Graphics Goto and TMT 1 (or 2, 3).

> Tank icon (1, 2, or 3) for that TMT.

Fig. 120 - GAS SWITCH

WARNING

• M (2 sec) - to step through Preview screens.

• S (2 sec) - to ﬂash the graphic TMT 1 (or 2, 3), then -

• S (2 sec) - to conﬁrm a Switch to that TMT (after 2 sec), display a TMT Search screen for 10 sec, then revert to Main with

that new TMT selected.

Fig. 121 - GAUG TMT

SWITCH PREVIEW

Note that Figures 122 & 123 are no longer used.

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DIGITAL GAUGE

OP MODE

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ATOM 3.0 OPERATING MANUAL

GAUG SURF MAIN, information includes (Fig. 124):

> Surface Interval time (hr:min) with SURF icon; if no dive yet, this is time since mode access.

> Graphic GAU.

> Dive number with # icon, up to 24 for that operating period (0 if no dive made yet).

> TMT 1 Pressure with PSI (or BAR) and link (speaker) icons, if active. #1 is the default in Surface Mode.

> TMT (tank) 1 icon.

> Battery icon, if voltage is low.

• M (2 sec) - to access Watch Main.

Fig. 124 - GAUG SURF MAIN

(no dive yet)

• A (< 2 sec) - to step forward to GAUG SURF ALT 1.

• M (< 2 sec) - to step back to BATT/TMT.

• L (press) - to activate the Backlight.

GAUG SURF GROUP

Upon surfacing during dives, the Dive Main will remain on display for the ﬁrst 10 minutes, with Surface Interval time (SI) in place

of Depth, after which the Surface Main will be displayed.

(selection sequence)

---------------------

ALT 1 (Last)

ALT 2

FLY

LOG

RUN TIMER (use)

SET A

The GAUG Surface Group selections are accessed and function similar to those described previously for NORM.

SET U

SEL DIVE OP MODE*

HISTORY

GAUG SURFACE GROUP, button operations* >>

These operations apply to all group selections that follow, those marked with * are not repeated when describing each selection.

BATT/TMT STATUS

• A (< 2 sec) - to step forward through selections.

• A (hold)* - to scroll forward through selections.

• M (< 2 sec) - to step back through selections.

• M (2 sec, any time)* - revert to Main.

*This selection is bypassed

during 24 hours after con-

ducting a GAUG dive.

• No button action (2 min)* - revert to Main.

• L (press)* - to activate the Backlight.

GAUG SURF ALT 1, information includes (Fig. 125):

> SI* (hr:min) with SURF icon, prior to Last dive.

> Max Depth* with MAX and FT (or M) icons.

> Elapsed Dive Time* (up to 999) with EDT and min icons.

> Graphic LAST, indicating data is for dive previously conducted while still in GAUG mode.

*Dashes if no previous dive conducted.

• A (< 2 sec) - to step forward to ALT 2.

• M (< 2 sec) - to step back to Main.

Fig. 125 - GAUG SURF ALT 1

(Last dive's data)

GAUG SURF ALT 2, information includes (Fig. 126):

> Altitude graphic (EL - 2 to EL - 7), blank if Sea level.

> Time of Day (hr:min_sec) with AM or PM icon if 12 Hour Format, no icon if 24 Hour Format.

> Temperature with ° icon and graphic F (or C).

• A (< 2 sec) - to step forward to FLY.

• M (< 2 sec) - to step back to ALT 1.

Fig. 126 - GAUG SURF ALT 2

GAUG features a Run Timer which can be selected for display on the Dive Main*. The Run Timer cannot be added or removed

from the display during dives.

*When the Run Timer is displayed, max EDT displayed is 99 minutes. When it is not displayed, max EDT displayed is 999 min.

GAUG Run Timer Lead-in, information includes (Fig. 127) -

> Graphics Goto, GAU, and R.TMR.

• A (< 2 sec) - to access Use Run Timer from Log.

• S (< 2 sec) - to access Use Run Timer.

• A (< 2 sec) - to step forward to SET A.

• M (< 2 sec) - to step back to Log.

Use Run Timer, information includes (Fig. 128) -

> Graphics USE and RTMR.

> Graphic YES (or NO), ﬂashing.

Fig. 127 - GAUG RUN TIMER

LEAD-IN

• A (< 2 sec) - to toggle between YES and NO.

• S (< 2 sec) - to save the selection and revert to Lead-in.

• S (2 sec), if not changed - to revert to Lead-in.

Upon descent to 5 FT (1.5 M) for 5 seconds,

operation will enter Gauge Dive Mode.

Fig. 128 - USE RUN TIMER

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Run Time

(min:sec)

GAUG DIVE MAIN, information includes (Fig. 129) -

> Current Depth with FT (or M) icon.

- or -

> Run Timer (min:sec), if selected for display, up to 199:59.

> Elapsed Dive Time with EDT and min icons, up to 999 if no Run Timer; or up to 99 if the Run Timer is displayed.

> Tank Pressure with Link, PSI (or BAR), Tank (TMT) icons.

> Air Time Remaining with ATR and min icons.

> VARI (while ascending).

• A (< 2 sec) - to access ALT.

• M (2 sec) - to access TMT Switching.

• S (< 2 sec) - to acknowledge/silence alarms.

• S (< 2 sec)* - to start/stop Run Timer, if displayed.

• S (2 sec)* - to reset Run Timer to 0:00, if active.

• L (press) - to activate Backlight.

Fig. 129 - GAUG DIVE MAIN

*S operations of the Run Timer are blocked during Switching and alarms.

Upon ascending to 2 FT (0.6 M) during a dive, Surface Interval time will be displayed with the SURF icon ﬂashing for the ﬁrst 10

minutes (Fig. 130). The Run Timer will remain active if displayed, then stop and reset to 0:00 after 10 minutes.

>> Button operations are as described above.

>> After 10 minutes elapse, operation will revert to the Surface Main and full access will be given to GAUG Surface items.

>> If a descent is made to 5 FT (1.5 M) for 5 seconds, the dive will be continued.

>> Surface time will not be added to Dive Time.

Fig. 130 - GAUG DIVE MAIN

(during < 10 min on surface)

Once a dive is completed in Gauge Mode,

operation will lock into Gauge Mode for 24 hours.

GAUG DIVE ALT, information includes (Fig. 131) -

> Max Depth with MAX and FT (or M) icons.

> Time of Day (hr:min_sec), with AM (or PM) icon if 12 Hour.

> Temperature with ° icon and graphic F (or C).

• 5 sec or A (< 2 sec), revert to Main.

Fig. 131 - GAUG DIVE ALT

DV 3 (DELAYED VIOLATION 3)

If you descend deeper than the MOD*, the audible will sound and the alarm LED will ﬂash. The graphic UP will ﬂash in place of

Current Depth (Fig. 132), and Max Depth will only indicate dashes signifying that you are too deep.

*MOD is the Max Operating Depth at which the unit can properly perform calculations or provide accurate display information. Refer to the speciﬁcations in the

back.

Upon ascending above the MOD, Current Depth will be restored, however, Max Depth will continue to be displayed as dashes

for the remainder of that dive. The Log for that dive will also display dashes for Max Depth.

Fig. 132 - GAUG DIVE DV 3

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ATOM 3.0 OPERATING MANUAL

FREE DIVE

OP MODE

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ATOM 3.0 OPERATING MANUAL

FREE SURF MAIN, information includes (Fig. 133):

> Surface Interval time (min:sec up to 59:59, then hr:min) with SURF icon; if no dive, this is time since mode access.

> Graphic FRE.

> Dive number with # icon, up to 99 for that operating period (0 if no dive made yet).

> (PZ+), CF, Battery icons - if they apply.

> TLBG with icon, if any after a NORM or FREE dive.

• M (2 sec) - to access Watch Main.

• A (< 2 sec) - to step forward to FREE SURF ALT 1.

• M (< 2 sec) - to step back to SHOW NDC.

• L (press) - to activate the Backlight.

Fig. 133 - FREE SURF MAIN

(no dive yet)

Upon surfacing during dives, the Dive Main will remain on display for the ﬁrst 1 minute (with SI in place of Depth) after which the Surface Main will be displayed.

FREE SURFACE GROUP, button operations* >>

FREE SURF GROUP

(selection sequence)

---------------------

These operations apply to all group selections that follow, those marked with * are not repeated when describing each selection.

ALT 1 (Last)

• A (< 2 sec) - to step forward through selections.

• A (hold)* - to scroll forward through selections.

• M (< 2 sec) - to step back through selections.

• M (2 sec, any time)* - revert to Main.

ALT 2

CD TIMER

• No button action (2 min)* - revert to Main.

• L (press)* - to activate the Backlight.

SET FA

SEL DIVE OP MODE

SHOW NDC.

FREE SURF ALT 1, information includes (Fig. 134):

> SI (min:sec, hr:min)* with SURF icon, prior to Last dive.

> Max Depth* with MAX and FT (or M) icons.

> Elapsed Dive Time* (min_sec) with EDT and min_sec icons.

> Graphic LAST, indicating data is for previous FREE dive.

*Dashes if no previous dive conducted while in FREE mode.

pre dive SI

(min:sec)

• A (< 2 sec) - to step forward to ALT 2.

• M (< 2 sec) - to step back to Main.

FREE SURF ALT 2, information includes (Fig. 135):

> Altitude graphic (EL2 to EL7), blank if Sea level.

> Time of Day (hr:min_sec) with AM (or PM) icon if 12 Hour Format, no icon if 24 Hour.

• A (< 2 sec) - to step forward to CDT.

• M (< 2 sec) - to step back to ALT 1.

Fig. 134 - FREE SURF ALT 1

(Last Dive's Data)

CDT (Countdown Timer)

While on the surface, the CDT can be set, started, and stopped. Once set and started, it continues to run in the background

when a dive is started and becomes available as an ALT display.

CDT Lead-in, information includes (Fig. 136):

> Graphics Goto, FRE, and CDT.

• S (< 2 sec) - to access CDT Status.

• A (< 2 sec) - to step forward to SET FA.

• M (< 2 sec) - to step back to ALT 2.

Fig. 135 - FREE SURF ALT 2

CDT Status, information includes (Fig. 137):

> Graphic OFF (or ON) ﬂashing. If OFF, 0:00 or the CDT if previously set. If ON, the remaining CDT (min_sec) with icons.

> Graphic CDT.

• A (< 2 sec) - to step forward through selections of OFF, ON, and SET.

• M (< 2 sec) - to step back through selections.

• S (< 2 sec) - to save the selection.

>> If OFF or ON is selected, revert to the Lead-in screen.

>> If SET is selected, access the Set CDT screen.

Fig. 136 - CDT LEAD-IN

• S (2 sec) - to revert to CDT Lead-in, if no setting change.

Fig. 137 - CDT STATUS

(On, running)

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Set CDT, information includes (Fig. 138):

> Graphics SEt and CDT.

> Timer setting (min_sec), with Minute digits ﬂashing.

• A (hold) - to scroll upward through Minute Set Points from 0 to 59 (8/sec) in increments of 1 (min).

• A (< 2 sec) - to step upward through Minute Set Points.

• M (< 2 sec) - to step back through Set Points.

• S (< 2 sec) - to save the Minute setting and ﬂash the Seconds digits.

• A (hold) - to scroll upward through Second Set Points from 00 to 59 (8/sec) in increments of 01 (sec).

• A (< 2 sec) - to step upward through Second Set Points.

Fig. 138 - SET FREE CDT

• M (< 2 sec) - to step back through Set Points.

• S (< 2 sec) - to save the CDT setting and revert to the CDT Status screen with the graphic SEt ﬂashing (Fig. 139).

> ON will then start the countdown and revert to CDT Lead-in.

> OFF will save the setting and revert to CDT Lead-in.

When the countdown reaches 0_00, the audible will sound and the graphic CDT with 0 min will ﬂash on the Main.

SET FA GROUP (FREE ALARMS)

Fig. 139 - CDT STATUS

(set, ready)

Selections >> EDT >> DA1 >> DA2 >> DA3.

Set Points remain as set until changed.

Set FA Lead-in, information includes (Fig. 140):

> Graphics Goto and SET FA.

• A (< 2 sec) - to step forward to Select Dive OP Mode.

• M (< 2 sec) - to step back to CDT.

• S (< 2 sec) - to access Set EDT Alarm.

Fig. 140 - SET FA LEAD-IN

EDT ALARM

Factory set for a ﬁxed 30 seconds, the EDT (Elapsed Dive Time) alarm sounds the audible every 30 seconds while underwater in

FREE Dive Mode.

Set EDT Alarm, information includes (Fig. 141):

> Graphics SEt and EDT AL.

> Set Point graphic OFF (or ON) ﬂashing.

• A (< 2 sec) - to toggle between ON and OFF.

• S (< 2 sec) - to save the setting and access Set DA 1.

• S (2 sec) - to revert to Set FA.

Fig. 141 - SET EDT ALARM

DA (DEPTH ALARMS)

There are 3 Free Depth Alarms (DAs) that can be set at progressively deeper depths*.

*DA-2's setting must be deeper than DA-1's, and DA-3's must be deeper than DA-2's.

Set DA-1 Alarm, information includes (Fig. 142A, B):

> Graphics SEt and DA-1 AL.

> Set Point graphic OFF, or Depth value with FT (or M) icon, ﬂashing.

Fig. 142A - SET DA

• A (hold) - to scroll upward through Set Points (8/sec) from OFF to 30 to 330 FT (10 to 100 M) in increments of 10 FT (1 M).

• A (< 2 sec) - to step upward through Set Points.

• M (< 2 sec) - to step back through Set Points.

• S (< 2 sec) - to save the setting.

> If OFF is saved, operation reverts to Set FA Lead-in.

> If a Depth value is saved, Set DA-2 is accessed.

• S (2 sec), if no change - to revert to Set FA Lead-in.

Fig. 142B - SET DA

(depth value)

Set DA-2 and DA-3 are similar with Depth values beginning 1 increment higher (deeper) than the previous selection set.

Example : If DA-1 is set for 100 FT, DA-2 settings start at 110 FT.

SELECT DIVE OP MODE >> similar to NORM.

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ATOM 3.0 OPERATING MANUAL

SHOW NDC TIME

This selection allows NDC (No Deco time remaining) to be displayed on the Dive Main in addition to EDT.

NDC Lead-in, information includes (Fig. 143):

> Graphics Goto, SHOW, and NDC.

• S (< 2 sec) - to access Show NDC.

• A (< 2 sec) - to step forward to Surface Main.

• M (< 2 sec) - to step back to Select Dive OP Mode.

Fig. 143 - SHOW NDC

LEAD - IN (to access Show)

Show NDC, information includes (Fig. 144):

> Graphic YES (or NO) ﬂashing.

> Graphics SHOW and NDC with icon.

• A (< 2 sec) - to toggle between YES and NO.

• S (< 2 sec) - to save the setting and revert to Lead-in.

• S (2 sec) - to step back to Lead-in, if no setting change.

Shared Settings >> To change items that FREE Mode shares with NORM Mode, access NORM SURF Main, then Set U, then

Set Wet Activation, Units, Algorithm, CF, or Glo.

Fig. 144 - SHOW NDC

(to show on Main)

Upon descent to 5 FT (1.5 M) for 5 seconds,

operation will enter Free Dive Mode.

FREE DIVE MAIN, information includes (Fig. 145) -

> Current Depth with FT (or M) icon.

> Elapsed Dive Time with EDT and min_sec icons >>

>> when NDC is not displayed (Fig. 145A), EDT will be shown as seconds only up to 59 sec, then minutes and seconds up to 199 min_59 sec.

>> when NDC is displayed (Fig. 145B), EDT will be shown as seconds only up to 59 sec, then minutes only up to 199 min.

> NDC (up to 999 min) with icon, if set On.

> Temperature with ° icon and graphic F (or C).

> TLBG with icon.

> (PZ+), CF icons - if they apply

• A (< 2 sec) - to access ALT.

• L (press) - to activate Backlight.

Fig. 145A - FREE DIVE MAIN

Upon ascending to 2 FT (0.6 M) during a dive, Surface Interval time will be displayed with the SURF icon ﬂashing for the ﬁrst 1

minute and NDC (if set On) will be displayed as 2 dashes.

• A (< 2 sec) - to access Dive ALT.

> After 1 minute elapses, operation will revert to Surface Mode with full access given to other FREE Surface items.

> If a descent is made to 5 FT (1.5 M) for 5 sec, the dive will be continued. Surface time will not be added to Dive Time.

FREE DIVE ALT, information includes (Fig. 146) -

> Max Depth with MAX and FT (or M) icons.

Fig. 145B - FREE DIVE MAIN

(with Show NDC set ON)

> Remaining Countdown Time (min:sec with colon ﬂashing) if On and a CD is in progress, or 0:00 with colon ﬂashing if On

and the CD is complete. If Off, the CD Time previously set is displayed with colon solid indicating it is ready to start.

> Graphics CDT and ON (ﬂashing).

• S (< 2 sec) - to toggle between ON and OFF*.

*Start or Stop the countdown and revert to Main.

• A (< 2 sec) - to revert to Main.

• Revert to Main in 10 sec, if A is not pressed.

• L (press) - to activate Backlight.

Fig. 146 - FREE DIVE ALT

(CDT On, running)

When ON, the CDT will run in the background until it counts down to 0:00, or it is turned Off.

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ATOM 3.0 OPERATING MANUAL

FREE DIVE ALARMS

FREE mode alarms, which are separate from NORM (or GAUG) alarms, sound either 1 or 3 times as 3 beeps then clear.

They cannot be acknowledged or silenced.

FREE CDT Alarm

When a set Countdown Time reaches 0, the audible will sound during which time the graphic CDT will be displayed with 0 min

ﬂashing on the Main (Fig. 147).

Fig. 147 - CDT AL

FREE EDT Alarm

When set On, the EDT alarm activates every 30 seconds during a dive. The audible will sound during which time the EDT digits

will ﬂash on the Main (Fig. 148).

FREE Depth Alarms

When set On, the Depth alarms (1, 2, 3) activate at their respective set Depths. The audible will sound during which time the

graphic DA1 (2, 3) will be displayed with the Depth digits ﬂashing on the Main (Fig. 149).

High Nitrogen Alarms

When nitrogen increases to the caution level (4 TLBG segments), the audible will sound during which time the TLBG segments will

ﬂash on the Main (Fig. 150).

Fig. 148 - EDT AL

In the event that nitrogen continues to increase and reaches the Deco level, the audible will sound again during which time all 5

TLBG segments and the graphic VIO will ﬂash (in place of Temperature), and NDC will be removed.

When the audible is silent, the TLBG will be removed, the graphic UP will alternate with VIO (Fig. 151) until on the surface, then

UP will be removed.

The graphic VIO ﬂashes until 1 minute elapses on the surface, then it shifts upward and alternates with FRE (Fig. 152) and opera-

tion reverts to Violation Gauge Mode for 24 hours.

Fig. 149 - DEPTH AL

Fig. 150 - FREE TLBG AL

(during audible)

alt w/

Fig. 151 - FREE VIOLATION

(after audible)

alt w/

FRE

min:sec

Fig. 152 - FREE VIOLATION

(after 1 min on surface)

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ATOM 3.0 OPERATING MANUAL

REFERENCE

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ATOM 3.0 OPERATING MANUAL

PC INTERFACE

The unit is conﬁgured with a Data Port (Fig. 153a) that enables it to be connected to a PC USB port using a special interface

cable that is available as an optional accessory.

The USB Driver required for the PC interface system can be downloaded from the Oceanic Worldwide web site.

The PC interface system can be used to set/change the Set T group (Watch Time/Date), Set A group (Alarms), Set U group (Utili-

ties), and Set FA group (FREE Alarms). The Set F group (FO2) settings and Dive Operating Mode selection must be entered using

the button controls.

Fig. 153 - DATA PORT

Information available for retrieval* (download) from the unit to the PC program includes items such as dive number, surface

interval time, depth, dive time, start date and time, lowest temperature, sampling rate, Set Points, TLBG, VARI, air time, start/end

pressure, and Gas/TMT Switching events.

*FREE Dive information is only available using the PC interface system.

The unit checks for the presence of an interface device connection to the Data Port once every second* while in Watch mode.

*Checks are not made if the Wet Activation contacts are wet.

Upon sensing an interface connection, the requesting device (PC) connects to the ATOM and is prepared for upload of settings

or download of data which is then initiated using the PC program. During the process, there is a 2 minute window during which

time a PC countdown screen is displayed on the ATOM (Fig. 154). Upload or download must be started during this time.

Fig. 154 - PC INTERFACE

Prior to attempting to download data from your ATOM or upload settings to it, review the HELP section of the interface program.

Recommended is to print those sections of HELP that you consider appropriate for your interface activities.

PC requirements:

• IBM , or compatible, PC with USB Port

• Intel^®_®Pentium 200 MHz or better microprocessor

• Microsoft_®Windows_®2000, XP, Vista, or 7

• Super VGA card or compatible video graphics adaptor (256 color or greater) with a minimum 800 X 600 pixel screen area of display settings

• 16MB of available RAM

• 20MB of available hard drive storage

• Mouse

• CD Rom drive

• Printer

For software updates, refer to the Oceanic web site at ->> www.OceanicWorldwide.com

For support, call OceanLog Support toll free at ->> (866) 732-7877, 8 Am to 5 Pm USA Paciﬁc time.

CARE AND CLEANING

Protect your unit 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 unit 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. 155a), PC Interface Data Port (Fig. 155b), 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 unit under gently running fresh water and towel dry before storing.

• Transport your equipment cool, dry, and protected.

INSPECTIONS AND SERVICE

Your dive computer should be inspected annually by an Authorized Oceanic Dealer who will perform a factory prescribed func-

tion 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).

Fig. 155 - CASE BACK

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 unit to your local Authorized Oceanic Dealer.

If required to return your unit to the Oceanic USA factory:

• Obtain an RA (Return Authorization) number by contacting Oceanic USA at 510/562-0500 or send an e-mail to service@

oceanicusa.com.

• 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.

• Send freight prepaid and insured using a traceable method.

• Non-warranty service must be prepaid. COD is not accepted.

• Additional information is available on the Oceanic web site OceanicWorldwide.com or on the local Oceanic web site that

serves your global region.

The procedures that follow must be closely adhered to. Damage due to improper battery replacement is

not covered by the unit's warranty.

When the battery is removed, settings and calculations for repetitive dives are retained in the unit's memo-

ry while a new battery is installed.

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ATOM 3.0 OPERATING MANUAL

BATTERY REPLACEMENT

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.

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).

Fig. 156A - COVER

REMOVAL (using tool)

Inspect the Buttons, Lens, and Housing to ensure they are not cracked or damaged. If there is any sign of moisture in the Hous-

ing, DO NOT attempt to use it for diving until it receives proper service by an authorized Oceanic facility.

Battery Removal

• Locate the Battery Compartment on the back of the unit.

• Rotate the Battery Cover clockwise 10 degrees using the special Battery Cover Tool (Fig. 156A), or by pushing the lower

portion to the left while pushing the upper portion to the right using your thumbs (Fig. 156B).

• Lift the Cover with O-ring up and away from the Housing.

• Using care not to damage the Contact (Fig. 157a), slide the Battery up and out of the left side of the Compartment.

• Discard the Battery according to local regulations governing disposal of Lithium batteries.

Fig. 156B - COVER

REMOVAL (using thumbs)

CAUTION: DO NOT allow a metal object to short circuit the top of the Battery, which is positive (+), to

the negative ( - ) contact of the Battery Compartment.

Inspection

• 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.

• Remove the Battery Cover O-ring and inspect it for any signs of deterioration or deformity. DO NOT use tools to remove the

O-ring.

Fig. 157 - BATTERY

REMOVAL

• To ensure proper sealing, O-ring replacement is highly recommended each time the Battery is replaced.

• Closely examine the threads of the Battery Cover and Housing for any signs of damage that might prevent proper threading.

• Closely examine the inside of the Battery Compartment for any signs of corrosion indicating entrance of moisture into the

unit.

Fig. 158 - BATTERY INSTALL

Fig. 159 - COVER O-RING

WARNING: If damage, moisture, or corrosion is found, return your unit to an Authorized Oceanic

Dealer, and DO NOT attempt to use it until it has received factory prescribed service.

Battery Installation

• Slide a new 3 volt type CR2430 Lithium Battery, negative side down into the Battery Compartment. Slide it in from the left

side (Fig. 158) and ensure that it slides under the contact clip on the lower/right rim of the cavity.

• Lightly lubricate the new Cover O-ring* with silicone grease and place it on the inner rim of the Battery Cover. Ensure that it

is evenly seated (Fig. 159).

*The O-ring must be a genuine Oceanic part that can be purchased from an Authorized Oceanic Dealer. Use of any other O-ring will void the warranty.

• Carefully place the Battery Cover (with O-ring) into position on the rim of the Battery Compartment, then press it evenly and

completely down into place.

• Maintain the Battery Cover securely in place and turn it counter clockwise 10 degrees using the special Battery Cover tool

(Fig. 160A), or by pushing the lower portion to the right while pushing the upper portion to the left (Fig. 160B).

Fig. 160A - COVER

INSTALL (using tool)

Testing

• Observe the LCD display to ensure it is consistently clear and sharp in contrast throughout the screen.

• Set the Date and Time.

• Verify all Set Points prior to diving.

Fig. 160B - COVER

INSTALL (using thumbs)

If any portions of the display are missing or appear dim, or if a Low Battery Condition is indicated, return

your unit to an Authorized Oceanic Dealer for a complete evaluation before attempting to use it.

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ATOM 3.0 OPERATING MANUAL

ALTITUDE SENSING AND ADJUSTMENT

Altitude (i.e., ambient pressure) is measured upon activation and every 15 minutes until a dive is made.

> Measurements are only taken when the unit is dry.

> 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 unit automatically adjusts to

these conditions providing adjusted Depth, and allowed Dive Times at intervals of 1,000 feet (305 meters).

> When the Conservative Factor is set On, allowed Dive Times are calculated based upon the next higher 3,000 foot (915

meter) Altitude.

> At Sea Level, calculations are based upon an Altitude of 6,000 feet.

> 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).

> The unit will not function as a dive computer above 14,000 feet (4,270 meters).

ADDITIONAL INFORMATION PERTAINING TO FREE DIVE MODE

•

Although breathing apparatus is not utilized for Free Dive activities, nitrogen tissue loading remains a factor. Nitrogen loading is calculated

based upon a ﬁxed FO2 of Air.

Since a user has the option of alternating between 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 from one operating mode to the other, which permits the user

to maintain awareness of nitrogen absorption and offgasing status.

•

The mathematical models currently used in this dive computer 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.

ADDITIONAL WARNINGS

• Ensure that you know which Operating Mode is selected (NORM, GAUG, or 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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ATOM 3.0 OPERATING MANUAL

TECHNICAL DATA

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ATOM 3.0 OPERATING MANUAL

PZ+ ALGORITHM >> NDLS (minutes) at ALTITUDE (Imperial)

Altitude

(feet)

3001

4000

4001

5000

5001

6000

6001

7000

7001

8000

8001

9000

9001

10000

10001

11000

11001

12000

12001

13000

13001

3000

14000

Depth

( FT )

197

109

150

141

134

128

122

117

112

107

100

110

120

130

140

150

160

170

180

190

PZ+ ALGORITHM >> NDLS (minutes) at ALTITUDE (Metric)

Altitude

(meters)

916

1220

1221

1525

1526

1830

1831

2135

2136

2440

2441

2745

2746

3050

3051

3355

3356

3660

3661

3965

3966

4270

915

Depth

( M )

217

115

161

151

143

136

130

124

119

104

110

103

DSAT ALGORITHM >> NDLS (minutes) at ALTITUDE (Imperial)

Altitude

(feet)

3001

4001

5000

5001

6000

6001

7000

7001

8000

8001

9000

9001

10000

10001

11000

11001

12000

12001

13000

13001

14000

3000

4000

Depth

( FT )

260

137

201

103

187

175

165

156

148

141

135

130

124

118

100

110

120

130

140

150

160

170

180

190

DSAT ALGORITHM >> NDLS (minutes) at ALTITUDE (Metric)

Altitude

916

1220

1221

1525

1526

1830

1831

2135

2136

2440

2441

2745

2746

3050

3051

3355

3356

3660

3661

3965

3966

4270

(meters) to

915

Depth

( M )

283

144

217

112

204

104

190

178

168

159

151

144

138

132

127

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ATOM 3.0 OPERATING MANUAL

SPECIFICATIONS

CAN BE USED AS

•

Watch

Dive Computer (Air or Nitrox) with up to 3 Gases up to 100% O2 and 3 Transmitters.

Digital Depth Gauge/Timer with up to 3 Transmitters.

Free Dive (breath hold) activity with Depth Gauge/Countdown Timer.

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.

TRANSMITTERS

•

Battery and Pressure check

every 2 minutes when asleep

every 2 seconds when awake

Startup

Pressure => 120 PSI (8 BAR)

Battery => 2.75 volts

Shutdown

Pressure < 50 PSI (3.5 BAR)

TMT Compatibility with Nitrox

When packaged and shipped from the factory, Oceanic TMTs are rated for use with compressed Air and Nitrox mixtures containing up to 99% O2 by volume and with 100% O2.

OPERATIONAL PERFORMANCE

Function:

Accuracy:

•

Depth

Timers

±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 4 FT (1.2 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 displays Dives #1 to 24, FREE displays #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 DC 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:

• Watch Battery

• Transmitter Battery

• Shelf life

• Replacement

• Use Life (ATOM 3.0)

(1) 3 vdc, CR2450, Lithium battery (Panasonic or equivalent)

(1) 3 vdc, CR2, .75 Ahr, Lithium battery (Duracell model DL-CR2 or equivalent)

Up to 7 years (when shipped from factory in Deep Sleep mode)

User replaceable (annual recommended)

1 year or 300 dive hours if (2) 1 hour dives per dive day

• Use Life (Transmitter) 300 dive hours if (2) 1 hour dives per dive day

Battery Indicator (ATOM 3.0 only):

•

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 the water >> between 28 °F and 95 °F (-2 and 35 °C).

BAR GRAPHS:

TLBG

segments

1 to 3

• No Deco Normal zone

• No Deco Caution zone

• Decompression zone

5 (all)

VARI

60 FT (18 M) & Shallower

Deeper than 60 FT (18 M)

segments

FPM

MPM

0 - 3

3.5 - 4.5

5 - 6

6.5 - 7.5

8 - 9

> 9

segments

FPM

0 - 20

21 - 30 6.5 - 9

31 - 40 9.5 - 12

41 - 50 12.5 - 15

51 - 60 15.5 - 18

MPM

0 - 6

0 - 10

11 - 15

16 - 20

21 - 25

26 - 30

> 30

•

Normal zone

•

Caution zone

Too Fast zone (ﬂashing)

5 (all)

> 60

> 18

Doc. No. 12-5216-r02 (9/6/11)

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ATOM 3.0 OPERATING MANUAL

SPECIFICATIONS (CONTINUED)

NUMERIC DISPLAYS:

Range:

Resolution:

•

Main Time of Day

Dual Time of Day

Dual Time Differential

Watch Countdown Timer

Watch Chrono Lap #

Watch Chrono Lap Time

00:00_00 to 23:59_59 hr:min_sec

00:00 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

1 minute

1 (lap)

0:00 to 1:59:59_99

(hr:min:sec_.01 sec)

.01 second

•

PCI Countdown Timer

Altitude Level

Time to Fly

1:59 to 0:00 min:sec

Sea, EL-2 to EL-7

23:50 to 0:00 hr:min

1 second

1 (level)

1 minute

(starting 10 min after the dive)

23:50 to 0:00 hr:min

•

Time to Desaturate

1 minute

(starting 10 min after the dive)

•

Temperature

0 to 99°F (-18 to 60°C)

0 to 330 FT (100 M)

330 FT (100 M)

1°F (C)

1 FT (0.1/1 M )

Depth (display)

Max Operating Depth

Tank Pressure

0 to 5000 PSI (345 BAR)

5 PSI (1 BAR)

•

NORM/GAUG SI Time

NORM/GAUG Dive Number

0:00 to 23:59 hr:min

0 to 24

1 minute

1 (dive)

•

NORM EDT

GAUG EDT (with Run Time)

GAUG EDT (without Run Time)

00 to 199 min

00 to 99 min

00 to 999 min

1 minute

•

NORM DTR (NDC, OTR)

0 to 199 min

1 minute

•

NORM/GAUG ATR

FO2 (1, 2, 3) Set Points

PO2 Value

0 to 199 min

1 minute

1 %

.01 ATA

1 %

Air, 21 to 100 %

0.00 to 5.00 ATA

0 to 100 %

O2 Saturation

•

No Deco Deep Stop Time

No Deco Safety Stop Time

Safety Stop Run Timer

GAUG Dive Run Timer

2:00 to 0:00 min:sec

5:00 to 0:00 min:sec

0:00 to 9:59 min:sec

0:00 to 199:59 min:sec

1 second

•

Deco Stop Time

Total Ascent Time

Violation Countdown Timer

1 to 99 min

1 to 199 min

23:50 to 0:00 hr:min

1 minute

•

FREE SI Time (< 1 hr)

FREE SI Time (=> 1 hr)

FREE Dive Number

FREE Countdown Timer

FREE EDT (< 1 min)

FREE EDT (=> 1 min, no NDC)

FREE EDT (=> 1 min, with NDC)

0:00 to 59:59 min:sec

1:00 to 23:59 hr:min

0 to 99

59:59 to 0:00 min:sec

0 to 59 sec

1 second

1 minute

1 second

1 minute

1_00 to 59_59 min_sec

1 to 59 min

WARNING: If your ATOM 3.0 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 ATOM 3.0, a backup instrument system is highly recommended.

FCC ID: MH8A

FCC COMPLIANCE:

This equipment complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: 1.) this equipment may not cause harmful interference, and 2.) this equipment must accept any interference received,

including interference that may cause undesired operation.

FCC INTERFERENCE STATEMENT:

This equipment has been tested and found to comply with the limits for an Intentional Radiator, a Class B Digital Device, pursuant to Part 15 of FCC Rules, Title 47 of the Code of Federal Regulations. These rules are designed to

provide reasonable protection against harmful interference in a commercial or residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the

instructions, may cause harmful interference to radio communications.

There is no guarantee that interference will not occur in a particular installation. If this equipment does cause interference to radio or television reception, which can be determined by turning the equipment off and on, the user is

encouraged to try to correct the interference by one or more of the following measures:

•

Reorient or relocate the receiving antenna.

Increase the separation between the equipment and receiver.

Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.

Consult the dealer or an experienced radio/TV technician.

Warning: Changes or modiﬁcations to this unit not expressly approved by Oceanic/2002 Design could void the user's authority to operate the equipment.

Doc. No. 12-5216-r02 (9/6/11)

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ATOM 3.0 OPERATING MANUAL

INSPECTION / SERVICE RECORD

ATOM 3.0 Serial Number: