Suunto Scuba Diving Equipment SS015964000 User Manual
en  
SUUNTO ZOOP  
USER’S GUIDE  
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INTELLECTUAL PROPERTY AND CONFORMANCE STATEMENTS  
TRADEMARK  
Suunto is a registered trademark of Suunto Oy.  
COPYRIGHT  
© Suunto Oy 8/2011. All rights reserved.  
PATENT NOTICE  
Patents have been issued or applied for one or several features of this product.  
CE  
The CE mark is used to mark conformity with the European Union EMC directive  
89/336/EEC.  
EN 13319  
EN 13319 is a European diving depth gauge standard. Suunto dive computers are  
designed to comply with this standard.  
EN 250 / FIOH  
The tank pressure gauge and dive instrument parts used in measuring the tank pres-  
sure meet the requirements set in the section of the European Standard EN 250 that  
concern tank pressure measurements. FIOH, notified body no.0430, has EC type-  
examined this type of personal protective equipment.  
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WARNING YOU MUST READ the leaflet and user guide for your dive computer.  
Failure to do so may lead to improper use, serious injury or death.  
WARNING is used in connection with a procedure or situation that may  
result in serious injury or death.  
CAUTION  
is used in connection with a procedure or situation that will result  
in damage to the product.  
NOTE  
is used to emphasize important information.  
NOTE!  
You can change from Air mode to Nitrox mode at any time. It is  
however not possible to revert back to Air mode from Nitrox mode  
before the instrument has counted down the no-flying time.  
When planning both air and nitrox dives during the same dive series, you should set  
the instrument in Nitrox mode and modify the gas mix accordingly.  
WARNING ALLERGIC REACTIONS OR SKIN IRRITATIONS MAY OCCUR  
WHEN PRODUCT IS IN CONTACT WITH SKIN, EVEN THOUGH  
OUR PRODUCTS COMPLY WITH INDUSTRY STANDARDS.  
IN SUCH EVENT, STOP USE IMMEDIATLY AND CONSULT A  
DOCTOR.  
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WARNING NOT FOR PROFESSIONAL USE! Suunto dive computers are  
intended for recreational use only. The demands of commercial  
or professional diving may expose the diver to depths and expo-  
sures that tend to increase the risk of decompression illness (DCI).  
Therefore, Suunto strongly recommends that the device not be used  
for commercial or professional diving activity.  
WARNING ONLYDIVERS TRAINED IN THE PROPER USE OFSCUBADIVING  
EQUIPMENT SHOULD USEADIVE COMPUTER! No dive computer  
can replace the need for proper dive training. Insufficient or improper  
training may cause a diver to commit errors that may lead to serious  
injury or death.  
WARNING THERE ISALWAYSARISK OF DECOMPRESSION ILLNESS (DCI)  
FORANY DIVE PROFILE EVEN IFYOU FOLLOW THE DIVE PLAN  
PRESCRIBED BY DIVE TABLES OR A DIVE COMPUTER. NO  
PROCEDURE, DIVE COMPUTER OR DIVE TABLE WILLPREVENT  
THE POSSIBILITY OF DCI OR OXYGEN TOXICITY! An individual’s  
physiological make up can vary from day to day. The dive computer  
cannot account for these variations. You are strongly advised to  
remain well within the exposure limits provided by the instrument to  
minimize the risk of DCI. As an added measure of safety, you should  
consult a physician regarding your fitness before diving.  
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WARNING  
SUUNTOSTRONGLYRECOMMENDSTHATSPORTDIVERSLIMIT  
THEIR MAXIMUM DEPTH TO 40 M [130 FT] OR TO THE DEPTH  
CALCULATED BY THE COMPUTER BASED ON THE SELECTED  
O %ANDAMAXIMUM PO2 OF 1.4 BAR! Exposure to greater depths  
in2creases the risk of oxygen toxicity and decompression illness.  
WARNING DIVES WITH REQUIRED DECOMPRESSION STOPS ARE  
NOT RECOMMENDED. YOU SHOULD ASCEND AND BEGIN  
DECOMPRESSION IMMEDIATELY WHEN THE DIVE COMPUTER  
SHOWS YOU THAT A DECOMPRESSION STOP IS REQUIRED!  
Note the blinking ASC TIME symbol and the upward pointing arrow.  
WARNING USE BACK-UP INSTRUMENTS! Make sure that you use back-up  
instrumentation including a depth gauge, submersible pressure  
gauge, timer or watch, and have access to decompression tables  
whenever diving with the dive computer.  
WARNING PERFORM PRECHECKS! Always activate and check the device  
before diving in order to ensure that all Liquid Crystal Display (LCD)  
segments are completely displayed, that the device has not run out  
of battery power, and that the oxygen, altitude and personal adjust-  
ments are correct.  
WARNING YOUAREADVISEDTOAVOIDFLYINGANYTIMETHECOMPUTER  
COUNTS DOWN THE NO-FLY TIME. ALWAYS ACTIVATE THE  
COMPUTER TO CHECK THE REMAINING NO-FLY TIME PRIOR  
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TO FLYING! Flying or travelling to a higher altitude within the no-fly  
time can greatly increase the risk of DCI. Review the recommen-  
dations given by Divers Alert Network (DAN). There can never be  
a flying after diving rule that is guaranteed to completely prevent  
decompression illness!  
WARNING THE DIVE COMPUTER SHOULD NEVER BE TRADED OR  
SHARED BETWEEN USERS WHILE IT IS IN OPERATION! Its  
information will not apply to someone who has not been wearing it  
throughout a dive, or sequence of repetitive dives. Its dive profiles  
must match that of the user. If it is left on the surface during any dive,  
the dive computer will give inaccurate information for subsequent  
dives. No dive computer can take into account dives made without  
the computer. Thus, any diving activity up to four days prior to initial  
use of the computer may cause misleading information and must  
be avoided.  
WARNING DO NOT EXPOSEANYPART OFYOUR DIVE COMPUTER TOANY  
GAS MIX CONTAINING MORE THAN 40% OXYGEN! Enriched air  
with greater oxygen content presents a risk of fire or explosion and  
serious injury or death.  
WARNING THE DIVE COMPUTER WILL NOT ACCEPT FRACTIONAL  
PERCENTAGE VALUES OFOXYGEN CONCENTRATION. DO NOT  
ROUND UP FRACTIONAL PERCENTAGES! For example, 31.8%  
oxygen should be entered as 31%. Rounding up will cause nitrogen  
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percentages to be understated and will affect decompression cal-  
culations. If there is a desire to adjust the computer to provide more  
conservative calculations, use the personal adjustment feature to  
affect decompression calculations or reduce the PO setting to affect  
oxygen exposure according to the entered O2% an2d PO2 values.  
WARNING SET THE CORRECT ALTITUDE ADJUSTMENT MODE! When div-  
ing at altitudes greater than 300 m [1000 ft], the Altitude Adjustment  
feature must be correctly selected in order for the computer to cal-  
culate the decompression status. The dive computer is not intended  
for use at altitudes greater than 3000 m [10000 ft]. Failure to select  
the correct Altitude Adjustment setting or diving above the maximum  
altitude limit will result in erroneous dive and planning data.  
WARNING SET THE CORRECT PERSONALADJUSTMENT MODE! Whenever  
it is believed that factors that tend to increase the possibility of DCI  
exist, it is recommended that you use this option to make the cal-  
culations more conservative. Failure to select the correct Personal  
Adjustment setting will result in erroneous dive and planning data.  
WARNING DO NOT EXCEED THE MAXIMUM ASCENT RATE! Rapid ascents  
increase the risk of injury. You should always make the Mandatory  
and Recommended Safety Stops after you have exceeded the  
maximum recommended ascent rate. If this Mandatory Safety Stop  
is not completed the decompression model will penalize your next  
dive(s).  
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WARNING YOUR ACTUAL ASCENT TIME MAY BE LONGER THAN  
DISPLAYED BY THE INSTRUMENT! The ascent time will increase  
if you:  
•
•
•
remain at depth  
ascend slower than 10 m/min [33 ft/min] or  
make your decompression stop deeper than at the ceiling.  
These factors will also increase the amount of air required to  
reach the surface.  
WARNING NEVERASCENDABOVE THE CEILING!You must not ascend above  
the ceiling during your decompression. In order to avoid doing so by  
accident, you should stay somewhat below the ceiling.  
WARNING DO NOT DIVE WITHACYLINDER OFENRICHEDAIR IFYOU HAVE  
NOT PERSONALLY VERIFIED ITS CONTENTS AND ENTERED  
THE ANALYSIS VALUE INTO YOUR DIVE COMPUTER! Failure to  
verify cylinder contents and enter the appropriate O2% into your dive  
computer will result in incorrect dive planning information.  
WARNING DO NOT DIVE WITH A GAS IF YOU HAVE NOT PERSONALLY  
VERIFIED ITS CONTENTS AND ENTERED THE ANALYZED  
VALUE INTO YOUR DIVE COMPUTER! Failure to verify cylinder  
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contents and enter the appropriate gas values where applicable into  
your dive computer will result in incorrect dive planning information.  
WARNING Diving with gas mixtures exposes you to risks that are different from  
those associated with diving with standard air. These risks are not  
obvious, and require training to understand and avoid. Risks include  
possible serious injury or death.  
WARNING Traveling to a higher elevation can temporarily cause a change in the  
equilibrium of dissolved nitrogen in the body. It is recommended that  
you acclimatize to the new altitude by waiting at least three hours  
before diving.  
WARNING WHEN THE OXYGEN LIMIT FRACTION INDICATES THAT THE  
MAXIMUM LIMIT IS REACHED, YOU MUST IMMEDIATELY TAKE  
ACTION TO REDUCE OXYGEN EXPOSURE. Failure to take action  
to reduce oxygen exposure after the warning is given can rapidly  
increase the risk of oxygen toxicity, injury, or death.  
WARNING Suunto also recommends that you receive training in Free diving  
techniques and physiology before conducting breath hold dives.  
No dive computer can replace the need for proper dive training.  
Insufficient or improper training may cause a diver to commit errors  
that may lead to serious injury or death.  
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WARNING Using the Suunto Dive Planner software is not a substitute for  
proper dive training. Diving with mixed gases has dangers that are  
not familiar to divers diving with air. To dive with trimix, triox, heliox  
and nitrox or all of them, divers must have specialized training for  
the type of diving they are doing.  
WARNING Always use realistic SAC rates and conservative turn pressures  
during dive planning. Overly optimistic or erroneous gas planning  
can result in the exhaustion of breathing gas during decompression  
or in a cave or a wreck.  
WARNING ENSURE THE WATER RESISTANCE OF THE DEVICE! Moisture  
inside the device or battery compartment will seriously damage the  
unit. Only an authorized SUUNTO dealer or distributor should do  
service activities.  
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TABLE OF CONTENTS  
WARNINGS............................................................................................................... 2  
1. INTRODUCTION................................................................................................. 13  
1.1. SAFETY PRECAUTIONS............................................................................. 14  
1.1.1. Emergency Ascents............................................................................ 15  
1.1.2. Dive Computer Limitations ................................................................. 15  
2. GETTING ACQUAINTED.................................................................................... 16  
2.1. FUNCTIONS................................................................................................. 16  
2.2. PUSH BUTTONS ......................................................................................... 17  
2.3. WATER CONTACTS .................................................................................... 19  
3. DIVING WITH THE ZOOP................................................................................... 20  
3.1. BEFORE DIVING ......................................................................................... 20  
3.1.1. Activation and Prechecks ................................................................... 20  
3.1.2. Battery Indication................................................................................ 23  
3.1.2.1. Battery Power Indicator......................................................... 23  
3.1.3. Dive Planning [PLAN]......................................................................... 25  
3.1.4. User Definable Functions and Alarms................................................ 27  
3.2. SAFETY STOPS .......................................................................................... 27  
3.2.1. Recommended Safety Stop ............................................................... 28  
3.2.2. Mandatory Safety Stop....................................................................... 28  
3.3. DIVING WITH THE ZOOP............................................................................ 29  
3.3.1. Basic Dive Data.................................................................................. 30  
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3.3.2. Bookmark ........................................................................................... 32  
3.3.3. Consumed Bottom Time (CBT) .......................................................... 32  
3.3.4. Ascent Rate Indicator ......................................................................... 33  
3.3.5. Decompression dives......................................................................... 36  
3.4. DIVING IN NITROX MODE.......................................................................... 42  
3.4.1. Before Diving...................................................................................... 42  
3.4.2. Oxygen Displays................................................................................. 44  
3.4.3. Oxygen Limit Fraction (OLF).............................................................. 46  
3.5. AT THE SURFACE ....................................................................................... 47  
3.5.1. Surface Interval .................................................................................. 47  
3.5.2. Dive Numbering.................................................................................. 48  
3.5.3. Flying After Diving............................................................................... 50  
3.6. AUDIBLE AND VISUAL ALARMS................................................................. 52  
3.7. HIGH ALTITUDE DIVES AND PERSONAL ADJUSTMENT......................... 54  
3.7.1. Altitude Adjustment............................................................................. 55  
3.7.2. Personal Adjustment .......................................................................... 55  
3.8. ERROR CONDITIONS................................................................................. 57  
4. MENU BASED MODES ...................................................................................... 59  
4.1. MEMORY FUNCTIONS [1 MEMORY] ......................................................... 61  
4.1.1. Logbook and Dive Profile Memory [1 LOGBOOK] ............................. 63  
4.1.2. Dive History Memory [2 HISTORY] .................................................... 67  
4.1.3. Data Transfer and PC-Interface [3 PC-SET] ...................................... 67  
4.2. SET MODES [2 SET] ................................................................................... 69  
4.2.1. Dive Computer Model Settings [1 SET MODEL]................................ 70  
4.2.1.1. Nitrox Oxygen Settings......................................................... 70  
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4.2.2. Alarm settings [2 SET ALMS] ............................................................. 70  
4.2.2.1. Dive Time Alarm Setting........................................................ 72  
4.2.2.2. Maximum Depth Alarm Setting ............................................. 73  
4.2.3. Setting Time and date [3 SET TIME].................................................. 73  
4.2.4. Personal adjustments [4 SET ADJ] .................................................... 74  
5. CARE AND MAINTENANCE OF MY SUUNTO DIVING COMPUTER............... 76  
5.1. BATTERY REPLACEMENT ......................................................................... 78  
6. TECHNICAL DESCRIPTION .............................................................................. 84  
6.1. OPERATING PRINCIPLES .......................................................................... 84  
6.2. SUUNTO REDUCED GRADIENT BUBBLE MODEL (RGBM)..................... 87  
6.3. OXYGEN EXPOSURE................................................................................. 89  
6.4. TECHNICAL SPECIFICATION..................................................................... 90  
7. SUUNTO LIMITED WARRANTY FOR SUUNTO DIVING COMPUTERS AND  
SUUNTO DIVING COMPUTER ACCESSORIES ............................................... 94  
8. SUUNTO DIVE MANAGER (SDM)..................................................................... 96  
9. GLOSSARY......................................................................................................... 98  
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1. INTRODUCTION  
Congratulations on your purchase of the SUUNTO ZOOP dive computer. The ZOOP  
builds on the Suunto tradition of delivering feature-rich easy-use dive computers. Push  
button controls access a wide selection of choices and the display is optimized for the  
dive mode chosen. This dive computer is a compact and sophisticated multipurpose  
dive instrument, designed to give you years of trouble-free service.  
Choice of Operating Modes and Set-up Options  
User options for the ZOOP are selected using the push buttons.  
Pre Dive configuration and setup options include:  
• Choice of operating mode - Air / Nitrox  
• Choice of unit - Metric / Imperial  
• Maximum depth alarm  
• Dive time alarm  
• Clock, calendar  
• Mix Oxygen fraction % (Nitrox mode only)  
• Maximum PO2 (Nitrox mode only)  
• Altitude adjustment  
• Personal adjustment  
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Continuous Decompression with Suunto RGBM  
The Suunto Reduced Gradient Bubble Model (RGBM) utilized in the ZOOP predicts  
both dissolved and free gas in blood and tissues of divers. It is a significant advance  
on the classic Haldane models, which do not predict free gas. The advantage of  
Suunto RGBM is additional safety through its ability to adapt to a variety of situations  
and dive profiles.  
In order to optimize how to respond to different added risk situations an additional  
category of stop, referred to as a Mandatory Safety Stop, has been introduced. Also  
a countdown for the Recommended Safety Stop is included. The combination of stop  
types will depend on the specific dive situation.  
To get the most from the safety benefits be sure to read the summary of the Reduced  
Gradient Bubble Model in chapter 6.2.  
1.1. SAFETY PRECAUTIONS  
Do not attempt to use the dive computer without reading this instruction manual in its  
entirety, including all the warnings. Make sure that you fully understand the use, dis-  
plays and limitations of the instrument. If you have any questions about the manual or  
the dive computer, contact your SUUNTO dealer before diving with the dive computer.  
Always remember that YOU ARE RESPONSIBLE FOR YOUR OWN SAFETY!  
When used properly, the dive computer is an outstanding tool for assisting properly  
trained, certified divers in planning and executing sport dives. It is NOTASUBSTITUTE  
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FOR CERTIFIED SCUBA INSTRUCTION, including training in the principles of  
decompression.  
1.1.1. Emergency Ascents  
In the unlikely event that the dive computer malfunctions during a dive, follow the  
emergency procedures provided by your certified dive training agency or, alternatively,  
STEP 1: Assess the situation calmly and then move promptly to less than 18 m [60 ft].  
STEP 2: At 18 m [60 ft], slow down your ascent rate to 10 m/min [33 ft/min] and move  
to a depth between 3 and 6 meters [10 to 20 ft].  
STEP 3: Stay there as long as you assess your air supply will safely allow. After  
reaching the surface stay out of the water for at least 24 hours.  
1.1.2. Dive Computer Limitations  
While the dive computer is based on current decompression research and technology,  
you must realize that the computer cannot monitor the actual physiological functions  
of an individual diver. All decompression schedules currently known to the authors,  
including the U.S. Navy Tables, are based on theoretical mathematical models, which  
are intended to serve as a guide to reduce the probability of decompression illness.  
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2. GETTING ACQUAINTED  
2.1. FUNCTIONS  
The Suunto ZOOP can be set to function as a regular air dive computer or as a nitrox  
dive computer.  
The ZOOP features two dive computer models (AIR, NITROX), three main operat-  
ing modes (TIME/STAND-BY, SURFACE, DIVING), two menu based main modes  
(MEMORY, SET) and seven menu based submodes (review separate Quick Reference  
Guide). You can scroll through the modes using the push buttons. The mode indicator at  
the left side and the mode text at the bottom of the display indicate the selected mode.  
The timekeeping display is the default display of the instrument (Fig. 2.1.). If a button is  
not pressed within 5 minutes, the dive computer beeps and returns to the timekeeping  
display automatically (except in Diving mode). The timekeeping display shuts off after  
two hours, but pressing the PLAN or TIME button activates it.  
Making the ZOOP Personal  
For best use of the ZOOP take some time and make it YOUR computer.  
Set the correct time and date. Read this manual. Set dive alarms and make all the  
other settings listed in the introduction in this manual. Install the ZOOP in your console  
or fit it on to your wrist.  
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All this so you know your computer and have it set up as you want it before getting  
into the water.  
2.2. PUSH BUTTONS  
The ZOOP has easy-to-use push buttons and an advisory display, which guides the  
user. The SMART (MODE) button is the key to the system. The two scroll buttons,  
PLAN and TIME, are used for scrolling up and down the menus and to show the al-  
ternative displays. The dive computer is controlled with these three push buttons as  
follows (see Fig. 2.2.).  
The SMART button  
The PLAN, TIME and  
SCROLL buttons  
Fig. 2.1. Timekeeping  
display. Pressing PLAN  
or TIME button activates  
display.  
Fig. 2.2. Push buttons of  
the dive computer.  
Press the SMART (MODE) button  
• To activate the dive computer.  
• To change from the Surface Mode to the menu based modes.  
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• To select, confirm or quit a submode (short press).  
• To immediately exit any submode to the Surface Mode (long press).  
Press the arrow up scroll (PLAN) button  
• To activate the timekeeping display, if the display is blank.  
• To activate the Dive Planning in the Surface Mode.  
• To make a special bookmark in the profile memory during a dive.  
• To scroll up the options (, increase).  
Press the arrow down scroll (ALTER) button  
• To activate the timekeeping display, if the display is blank.  
• To activate the alternative display(s).  
• To scroll down the options (, decrease).  
The dive computer is controlled with the SMART (MODE/On/Select/OK/Quit) and the  
PLAN and TIME push buttons and with the water contacts as follows:  
Activation  
press the SMART (On) button or immerse the instrument in water  
for five (5) seconds.  
Dive Planning  
Menu Modes  
in the Surface Mode, press the PLAN (s) button.  
press the SMART (MODE) button.  
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2.3. WATER CONTACTS  
The water contacts control the automatic activation of the Dive Mode.  
The water and data transfer contacts are located on bottom of the case (Fig 2.3.).  
When submerged the water contacts are connected to the push buttons (which are  
the other pole of the water contact) by the conductivity of the water. The “AC” text  
(Active Contacts, Fig. 2.4.) will appear on display. The AC text will be shown until the  
water contact deactivates or the dive computer enters the Dive Mode automatically.  
E
O
P
S
O
E
N
L
C
B
A
Fig. 2.3. Depth sensor  
(A), water/data transfer  
contacts (B).  
Fig. 2.4. Active water  
contacts are indicated by  
the text AC.  
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3. DIVING WITH THE ZOOP  
This section contains instructions on how to operate the dive computer and interpret  
its displays. You will find that this dive computer is easy to use and read. Each display  
shows only the data relevant to that specific diving situation.  
3.1. BEFORE DIVING  
3.1.1. Activation and Prechecks  
The dive computer will activate if submerged deeper than 0.5 m (1.5 ft). However, it is  
necessary to turn on the Dive Mode before diving to check the altitude and personal  
adjustment settings, battery condition, oxygen settings etc. Press the SMART (Mode)  
button to activate the instrument.  
After activation all display elements will turn on showing mostly figure 8’s and graphical  
elements (Fig. 3.1.). A few seconds later the battery power indicator is shown and the  
buzzer is activated (Fig. 3.2. display a, b, c or d depending on the battery voltage). If  
set to Air mode the screen will enter the Surface mode (Fig. 3.3.) and if set to Nitrox  
mode the essential oxygen parameters are shown with the text NITROX (Fig. 3.20.)  
before the Surface mode.  
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°C  
Fig. 3.1. Startup I.  
All segments shown.  
Fig. 3.2. Startup II. Battery power indicator.  
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m
ºC  
DIVE TIME  
TIME  
Fig. 3.3. Startup III.  
Surface mode. Depth  
and dive time are zero,  
current temperature,  
20°C. Pressing TIME  
button activates alternative  
display of current time.  
At this time, perform your prechecks making sure that:  
• the instrument operates in the correct mode and provides a complete display  
(Air/Nitrox modes)  
• the low battery indicator is not on  
• the altitude and personal adjustment settings are correct  
• the instrument displays correct units of measurement (Metric/Imperial)  
• the instrument displays correct temperature and depth (0.0 m [0 ft])  
• the buzzer beeps  
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And if set to Nitrox mode (refer to chapter 3.4 Diving in Nitrox mode), make sure that:  
• the oxygen percentage is adjusted according to the measured Nitrox blend in  
your cylinder  
• the oxygen partial pressure limit is set correctly.  
The dive computer is now ready for diving.  
3.1.2. Battery Indication  
3.1.2.1. Battery Power Indicator  
This dive computer has a unique graphic Battery Power Indicator designed to give you  
an advance notice of impending need to change the battery.  
The Battery Power Indicator can always be seen when the Dive Mode is activated.  
The following Table and Figure show the various warning levels.  
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TABLE 3.1. BATTERY POWER INDICATOR  
Display  
Operation  
Figure 3.2  
BAT + 4 segments + OK  
BAT + 3 segments  
Normal, full battery.  
a
b
Normal, battery power is getting low  
or the temperature is low.  
Battery replacement is recommended  
if you are going to colder conditions or  
if you are planning to make a dive trip.  
LOWBAT + 2 segments  
+ low battery symbol  
Battery power is low and the battery  
replacement is recommended. The  
battery symbol is displayed.  
c
LOWBAT + 1 segments  
+ QUIT + low battery  
symbol  
Change the battery! Returns to  
the Time display. Activation and all  
functions are disabled.  
d
Temperature or an internal oxidation of the battery affects the battery voltage. If the  
instrument is stored for a long period, the low battery warning may be displayed even  
though the battery has enough capacity. The low battery warning may also be dis-  
played at low temperatures, even though the battery has enough capacity in warmer  
conditions. In these cases repeat the battery check procedure.  
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After battery check the Low Battery Warning is indicated by the battery symbol  
(Fig. 3.4.).  
If the battery symbol is displayed in the Surface mode or if the display is faded or  
weak, the battery may be too low to operate the dive computer and battery replace-  
ment is recommended.  
m
DIVE  
MAX  
QUIT  
NO DEC TIME  
ºC  
DIVE TIME  
Fig. 3.4. Low Battery  
Warning. Battery  
Fig. 3.5. Dive Planning.  
Planning mode is  
symbol indicates that  
the battery is low and  
battery replacement is  
recommended.  
indicated by PLAN text.  
No-decompression time  
limit at 30.0 m [100 ft] is  
14 minutes in A0/P1 mode.  
3.1.3. Dive Planning [PLAN]  
To enter Planning Mode, press the PLAN button at any time during Surface Mode.  
After showing the text “PLAN” (Fig. 3.5.), the display will show the no-decompression  
limit for the depth of 9 m [30 ft]. By pressing the down arrow () (TIME) button, the  
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dive computer will calculate and show the next deeper no-decompression limits in  
3 m [10 ft] increments ending at 45 m [150 ft]. By pressing the up arrow () (PLAN)  
button, the next shallower depth will be shown again.  
The Planning Mode is canceled by pressing the SMART (QUIT) button.  
NOTE!  
The Planning mode is disabled in Error mode (see section 3.8. “Error  
Conditions”).  
Higher Altitude and conservative Personal Adjustment Modes will shorten the no-  
decompression time limits. These limits at different Altitude and Personal Adjustment  
Mode selections are shown in Table 6.1 and 6.2 in section 6.1. “Operating Principles”.  
The Planning mode also accounts for the following information from previous dives:  
• any calculated residual nitrogen  
• all dive history for the past four days  
• oxygen toxicity (Nitrox mode)  
The no-decompression times given for different depths will therefore be shorter than  
before your first “fresh” dive.  
DIVE NUMBERING SHOWN DURING DIVE PLANNING  
Dives belong to the same repetitive dive series if the instrument was still counting  
down the no-fly time at the beginning of the dive.  
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The surface interval must be at least 5 minutes for a dive to be considered a repetitive  
dive. Otherwise, it is considered a continuation of the same dive. The dive number  
will not change and the dive time will continue where it left off (see also section 3.5.2.  
“Dive Numbering”).  
3.1.4. User Definable Functions and Alarms  
The ZOOP has several user definable functions and depth and time related alarms  
that you can set according to your personal preference.  
The dive computer model (Air/Nitrox) can be set in the MODE- SET- MODELsubmode.  
The dive alarms can be set under MODE- SET- SET ALARMS, the time and date  
settings in MODE-SET-SET TIME, and the units (metric/imperial) as well as personal  
adjustments in the MODE- SET- SET ADJUSTMETS submode. Setting of the user  
definable functions and alarms are explained in detail in section 4.2. “Set Modes”.  
3.2. SAFETY STOPS  
Safety stops are widely considered “good diving practice” and are an integral part of  
most dive tables. Reasons to perform a safety stop include a reduction in sub clinical  
DCI, microbubble reduction, ascent control, and orientation before surfacing.  
The ZOOP displays two different types of safety stops: Recommended Safety Stop  
and Mandatory Safety Stop.  
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The Safety Stops are indicated by:  
• STOP label, when in the depth range 3 m - 6 m [10 ft - 20 ft] =  
Recommended Safety Stop Countdown  
• STOP+ CEILING label, when in the depth range 3 m - 6 m [10 ft - 20 ft] =  
Mandatory Safety Stop Time display  
• STOP label, when deeper than 6 m = Mandatory Safety Stop scheduled  
3.2.1. Recommended Safety Stop  
With every dive over 10 meters the instrument has a three minute countdown for the  
recommended safety stop, to be taken in the 3 - 6 meter [10 ft - 20 ft] range. This is  
shown with the STOP sign and a three-minute countdown in the center window instead  
of the no-decompression time (Fig. 3.9.).  
The Recommended Safety Stop, as the name implies, is recommended. If it is ignored,  
there is no penalty applied to the following surface intervals and dives.  
3.2.2. Mandatory Safety Stop  
When the ascent rate exceeds 12 meters/min [40 ft] momentarily or 10 meters/min  
[33 ft] continuously the micro-bubble build-up is predicted to be more than allowed for  
in the decompression model. The Suunto RGBM calculation model responds to this by  
adding a Mandatory Safety Stop to the dive. The time of this Mandatory Safety Stop  
will depend on the severity of the ascent rate excess.  
The STOP sign will appear in the display and when you reach the depth zone between  
6 m to 3 m [20 ft to 10] also the CEILING label, ceiling depth and the calculated Safety  
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Stop time appear in the display. You should wait until the Mandatory Safety Stop  
warning disappears (Fig. 3.13.).  
The Mandatory Safety Stop time always includes the three minute Recommended  
Safety Stop time. The total length of the Mandatory Safety Stop time depends on the  
seriousness of the ascent rate violation.  
You must not ascend shallower than 3 m [10 ft] with the Mandatory Safety Stop warn-  
ing on. If you ascend above the Mandatory Safety Stop ceiling, a downward pointing  
arrow will appear and a continuous beeping starts (Fig. 3.14.). You should immedi-  
ately descend to, or below, the Mandatory Safety Stop ceiling depth. If you correct  
this situation at any time during that dive, there are no affects on the decompression  
calculations for future dives.  
If you continue to violate the Mandatory Safety Stop, the tissue calculation model is  
affected and the dive computer shortens the available no-decompression time for your  
next dive. In this situation, it is recommended to prolong your surface interval time  
before your next dive.  
3.3. DIVING WITH THE ZOOP  
The ZOOP has two operating modes: Air mode for diving with standard air only and  
Nitrox mode for diving with oxygen enriched (EANx) mixtures. The Nitrox mode is  
enabled in the MODE-SET-MODEL.  
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3.3.1. Basic Dive Data  
The dive computer will remain in the Surface mode at depths less than 1.2 m [4 feet].  
At depths greater than 1.2 m the instrument will go into the Diving mode (Fig. 3.6.).  
m
MAX  
NO DEC TIME  
C
B
T
ºC  
DIVE TIME  
Fig. 3.6. Dive starts.  
All information on the display is labeled (Fig. 3.6). During a no-decompression stop  
dive, the following information will be displayed:  
• your present depth in meters [ft]  
• the maximum depth during this dive in meters [ft], indicated as MAX  
• the available no-decompression time in minutes in the center window as NO DEC  
TIME and as a bar graph on the left side of the display. It is calculated based on  
the five factors described in section 6.1. “Operating Principles”.  
• the water in temperature in °C [°F] in the lower left corner  
• the elapsed dive time in minutes, shown as DIVE TIME in the lower right corner  
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• the Altitude Adjustment setting on the left side of the center window with a wave  
and mountain symbols (A0, A1, or A2) (see Table 3.4.)  
• the Personal Adjustment setting on the left side of the center window with a diver  
symbol and + signs (P0, P1, or P2) (see Table 3.5.)  
• Diver Attention Symbol if there is micro-bubble buildup, and surface interval  
should be prolonged (see Table 3.3.)  
Alternative displays by pressing the TIME button (Fig. 3.7.):  
• the current time, shown as TIME  
NOTE!  
In Dive Mode the alternative display switches back to the main display  
after 5 seconds.  
m
MAX  
NO DEC TIME  
C
B
T
ºC  
DIVE TIME  
TIME  
Fig. 3.7. Fig. 3.7. Diving display. Present depth is 19.3 m [63 ft] and no-decompression stop  
time limit is 23 minutes in A0/P1 mode. Maximum depth during this dive was 19.8 m [65 ft], water  
temperature is 18°C [64°F], elapsed dive time is 16 minutes. Alternative display of current time 10:20  
[10:20 am] is shown for 5 seconds after pressing TIME button.  
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m
m
MAX  
MAX  
STOP  
NO DEC TIME  
C
C
B
B
T
T
ºC  
DIVE TIME  
ºC  
DIVE TIME  
Fig. 3.8. Bookmark  
activation. An annotation,  
Bookmark, is placed in  
the profile memory during  
a dive by pressing PLAN  
button. Note Logbook  
symbol.  
Fig. 3.9. A three minute  
Recommended Safety  
Stop.  
Fig. 3.10. Ascent Rate  
Indicator. Three segments.  
3.3.2. Bookmark  
It is possible to make special marks in the profile memory during a dive. These  
Bookmarks will be shown as a blinking dive log symbol when scrolling the profile  
memory on the computer display. To make a bookmark on the profile memory during  
a dive press the PLAN button (Fig. 3.8.).  
3.3.3. Consumed Bottom Time (CBT)  
The available no-decompression stop time is also shown visually in the multi-function  
bar graph on the left side of the display (Fig. 3.7. and 3.8.). When your available no-  
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decompression time decreases below 200 minutes, the first (lowest) bar graph seg-  
ment appears. As your body absorbs more nitrogen, more segments start to appear.  
White Zone - As a safety precaution Suunto recommends you should maintain the  
no-decompression bar graph within the green zone. Segments start to appear when  
the available no-decompression time decreases below 100, 80, 60, 50, 40, 30 and  
20 minutes.  
Yellow Zone - As the bars reach the yellow zone, your no-decompression stop time is  
less than 10 or 5 minutes and you are getting very close to no-decompression limits.  
At this point, you should start your ascent towards the surface.  
Red Zone - As all of the bars appear (red zone), your no-decompression stop time  
has become zero and your dive has become a decompression stop dive (for more  
information see section 3.3.5. “Decompression dives”).  
3.3.4. Ascent Rate Indicator  
The ascent rate is shown graphically along the right side of the display as follows:  
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TABLE 3.2. ASCENT RATE INDICATOR  
Ascent Rate Indicator  
No segments  
The equivalent ascent speed  
Example in Fig.  
Normal, full battery.  
3.7  
One segment  
4 - 6 m/min [13 - 20 ft/min]  
6 - 8 m/min [20 - 26 ft/min]  
8 - 10 m/min [26 - 33 ft/min]  
10 - 12 m/min [33 - 39 ft/min]  
Above 12 m/min [39 ft/min] or  
3.8  
Two segments  
3.9  
Three segments  
Four segments  
Four segments, the  
3.10  
3.11  
3.12  
SLOW segment, blinking continuously above 10 m/min  
depth reading, the STOP [33 ft/min]  
sign and an audible alarm  
When the maximum allowed ascent rate is exceeded, the fifth SLOW warning seg-  
ment and the STOP sign appear and the depth reading starts to blink, indicating that  
the maximum ascent rate has been exceeded continuously or that the current ascent  
rate is significantly above the allowed rate.  
Whenever the SLOW warning segment and the STOP sign appear (Fig. 3.12.), you  
should immediately slow down your ascent. When you reach the depth zone between  
6 m to 3 m [20 ft to 10 ft] the STOP and CEILING depth labels will advise you to make  
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a Mandatory Safety Stop. Wait until the warning disappears (Fig. 3.13.). You should  
not ascend shallower than 3 m [10 ft] with the Mandatory Safety Stop warning on.  
BEE
BEEP  
BEEP  
m
CEILING  
MAX  
STOP  
C
B
T
ºC  
DIVE TIME  
TIME  
Fig. 3.11. Ascent Rate  
Indicator. Maximum  
allowed ascent rate. Four  
segments.  
Fig. 3.12. Ascent Rate  
Indicator. Blinking depth  
reading, SLOW and four  
Fig. 3.13. A Mandatory  
Safety Stop. You are  
advised to make a  
Mandatory Safety Stop in  
the depth zone between  
6 m and 3 m [20 ft and  
10 ft]. Pressing TIME  
button shows alternative  
display.  
segments are shown together  
with an audible alarm: ascent  
rate is more than 10 m/min  
[33 ft/min]. This is a caution to  
slow down! STOP sign means  
that you are advised to make a  
Mandatory Safety Stop when  
you reach a depth of 6 m [20 ft].  
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WARNING DO NOT EXCEED THE MAXIMUM ASCENT RATE! Rapid ascents  
increase the risk of injury. You should always make the Mandatory  
and Recommended Safety Stops after you have exceeded the  
maximum recommended ascent rate. If this Mandatory Safety Stop  
is not completed the decompression model will penalize your next  
dive(s).  
3.3.5. Decompression dives  
When your NO DEC TIME becomes zero, your dive becomes a decompression stop  
dive, i.e. you must perform one or several decompression stops on your way to the  
surface. The NO DEC TIME on your display will be replaced by an ASC TIME nota-  
tion and the maximum depth will be replaced by a CEILING notation and an upward  
pointing arrow (Fig. 3.15.).  
If you exceed the no-decompression limits on a dive, the dive computer will provide  
decompression information required for ascent. After this, the instrument will continue  
to provide subsequent interval and repetitive dive information.  
Rather than requiring you to make stops at fixed depths, the dive computer lets you  
to decompress within a range of depths (Continuous Decompression).  
The ascent time (ASC TIME) is the minimum amount of time needed to reach the  
surface in a decompression dive. It includes:  
• the time needed to ascend to the ceiling at an ascent rate of 10 m/min [33 ft/min]  
plus  
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• the time needed at the ceiling. The ceiling is the shallowest depth to which you  
should ascend  
plus  
• the time needed at the Mandatory Safety Stop (if any)  
plus  
• the 3 minute Recommended Safety Stop  
plus  
• the time needed to reach the surface after the ceiling and safety stops have been  
completed.  
WARNING YOUR ACTUAL ASCENT TIME MAY BE LONGER THAN  
DISPLAYED BY THE INSTRUMENT! The ascent time will increase  
if you:  
• remain at depth  
• ascend slower than 10 m/min [33 ft/min]  
or  
• make your decompression stop deeper than at the ceiling.  
These factors will also increase the amount of air required to reach  
the surface.  
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BEEP  
BEEP  
BEEP  
m
CEILING  
STOP  
C
B
T
ºC  
DIVE TIME  
Fig. 3.14. Violated  
Fig. 3.15. Decompression Fig. 3.16. Decompression  
Mandatory Safety Stop.  
Downward pointing arrow  
and an audible alarm  
indicate you should  
dive, below floor. Upward  
pointing arrow, blinking  
ASC TIME label and an  
audible alarm tell you to  
ascend. Minimum total  
ascent time including  
dive, above floor. Upward  
pointing arrow has  
disappeared and ASC  
TIME label has stopped  
blinking, which means  
that you are in the  
descend to ceiling zone.  
safety stop is 7 minutes.  
Ceiling is at 3 m [10 ft].  
decompression range.  
CEILING, CEILING ZONE, FLOOR AND DECOMPRESSION RANGE  
When in decompression, it is important that you understand the meaning of ceiling,  
floor, and decompression range (Fig. 3.19.):  
• The ceiling is the shallowest depth to which you should ascend when in decom-  
pression. At this depth, or below, you must perform all stops.  
• The ceiling zone is the optimum decompression stop zone. It is the zone between  
the minimum ceiling and 1.8 m [6 ft] below the minimum ceiling.  
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• The floor is the deepest depth at which the decompression stop time will not  
increase. Decompression will start when you pass this depth during your ascent.  
• The decompression range is the depth range between the ceiling and floor.  
Within this range, decompression takes place. However, it is important to remem-  
ber that the decompression will be very slow at, or close to, the floor.  
The depth of the ceiling and floor will depend on your dive profile. The ceiling depth  
will be fairly shallow when you enter the decompression mode, but if you remain at  
depth, it will move downward and the ascent time will increase. Likewise, the floor and  
ceiling may change upwards while you are decompressing.  
When conditions are rough, it may be difficult to maintain a constant depth near the  
surface. In this case it will be more manageable to maintain an additional distance  
below the ceiling, to make sure that the waves do not lift you above the ceiling. Suunto  
recommends that decompression takes place deeper than 4 m [13 ft], even if the  
indicated ceiling is shallower.  
NOTE  
It will take more time and more air to decompress below the ceiling  
than at the ceiling.  
WARNING NEVERASCENDABOVE THE CEILING!You must not ascend above  
the ceiling during your decompression. In order to avoid doing so by  
accident, you should stay somewhat below the ceiling.  
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DISPLAY BELOW THE FLOOR  
The blinking ASC TIME and an upward pointing arrow indicate that you are below  
the floor (Fig. 3.15.). You should start your ascent immediately. The ceiling depth is  
shown on the right top corner and the minimum total ascent time on the right side of  
the center window.  
DISPLAY ABOVE THE FLOOR  
When you ascend above the floor, theASC TIME display stops blinking and the upward  
pointing arrow disappears (Fig. 3.16.). Decompression will now begin, but is very slow.  
You should therefore continue your ascent.  
DISPLAY AT THE CEILING ZONE  
When you reach the ceiling zone, the display will show you two arrows pointing at each  
other (the “hour glass” icon, Fig 3.17.). Do not ascend above this zone.  
During the decompression stop, ASC TIME will count down towards zero. When the  
ceiling moves upwards, you can ascend to the new ceiling. You may surface only  
after the ASC TIME and CEILING labels have disappeared, which means that the  
decompression stop and any Mandatory Safety Stop has been completed. You are  
advised, however, to stay until the STOP sign has also gone. This indicates that the  
three minute Recommended Safety Stop has also been completed.  
DISPLAY ABOVE THE CEILING  
If you ascend above the ceiling during a decompression stop, a downward pointing  
arrow will appear and a continuous beeping starts (Fig. 3.18.). In addition, an error  
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warning Er reminds you that you have only three minutes to correct the situation. You  
must immediately descend to or below the ceiling.  
If you continue to violate the decompression, the dive computer goes into a permanent  
Error Mode. In this mode the instrument can only be used as a depth gauge and timer.  
You must not dive again for at least 48 hours (see also section 3.8. “Error Conditions”).  
BEEP  
BEEP  
BEEP  
...  
m
CEILING  
m
CEILING  
MAX  
STOP ASC TIME  
STOP ASC TIME  
CEILING  
C
3 m / 10 ft  
B
T
C
ºC  
DIVE TIME  
TIME  
B
T
ºC  
DIVE TIME  
6 m / 18 ft  
FLOOR  
Fig. 3.17. Decompression  
dive, at ceiling zone. Two  
arrows point at each other  
(“hour glass”). You are in  
the optimum ceiling zone  
at 3.5 m [11 ft] and your  
minimum ascent time is  
5 minutes. Pressing TIME  
button activates alternative  
display.  
Fig. 3.18. Decompression Fig. 3.19. Ceiling and Floor  
dive, above ceiling.  
Zones. The Recommended  
and Manadatory Safety  
Note downward pointing  
arrow, Er warning and  
an audible alarm. You  
should immediately (within  
3 minutes) descend to or  
below ceiling.  
Stop zone lies between 6 m  
and 3 m [20 ft and 10 ft].  
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3.4. DIVING IN NITROX MODE  
3.4.1. Before Diving  
The ZOOP can be set for diving with standard air only (Air mode) or it can be set for  
diving with Enriched Air Nitrox (Nitrox mode). If you are educated for nitrox diving  
and you plan to make nitrox dives, it is recommended that you set the dive computer  
permanently to its NITROX Mode. The Nitrox mode can be enabled by accessing  
MODE-SET-MODEL (see chapter 4.2. “Set Modes”).  
If set to Nitrox mode, the correct oxygen percentage of the gas in your cylinder must  
always be entered into the computer to ensure correct nitrogen and oxygen calculations.  
The dive computer adjusts its mathematical nitrogen and oxygen calculation models  
according to the entered O2% and PO2 values. Calculations based on Nitrox use result  
in longer no-decompression times and shallower maximum depths than diving with  
air. When the dive computer is set in Nitrox mode the Dive Planning modes calculates  
with the O2% and PO2 values that are currently in the computer.  
WARNING DO NOT DIVE WITHACYLINDER OFENRICHEDAIR IFYOU HAVE  
NOT PERSONALLY VERIFIED ITS CONTENTS AND ENTERED  
THE ANALYSIS VALUE INTO YOUR DIVE COMPUTER! Failure  
to verify cylinder contents and enter the appropriate O2% into your  
dive computer will result in incorrect dive planning information.  
WARNING The dive computer will not accept fractional percentage values of  
oxygen concentration. Do not round up fractional percentages. For  
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example, 31.8% oxygen should be entered as 31%. Rounding up  
will cause nitrogen percentages to be understated and will affect  
decompression calculations. If there is a desire to adjust the com-  
puter to provide more conservative calculations, use the personal  
adjustment feature to affect decompression calculations or reduce  
the PO2 setting to affect oxygen exposure according to the entered  
O2% and PO2 values.  
NOTE  
As a safety precaution the oxygen calculations in the computer are  
made with an oxygen percentage of 1% + set O2% .  
DEFAULT NITROX SETTINGS  
In the NITROX Mode, when set to standard air (21% O ), the instrument can be used  
as an air dive computer. It remains in this air mode un2til the O2% setting is adjusted  
to any other percentage of oxygen (22% - 50%).  
NOTE  
The computer will automatically revert to the air (21% O2) setting  
when a new dive series is started, if it is not set to any other mix  
during the last two hours. When the oxygen percentage is set for  
air, the computer will retain this setting.  
Manually entered values for oxygen percentage are retained for about two hours after  
the setting if a dive series has not started. In case a dive series is started, the set  
value is retained until a new dive series is started or a new value is entered manually.  
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The default setting for maximum oxygen partial pressure is 1.4 bar, however you are  
able to set it between the range of 1.2 - 1.6 bar.  
3.4.2. Oxygen Displays  
If set to Nitrox mode the NITROX display, with all labeled oxygen information and the  
label NITROX, is shown after activation, and before the Dive Planning Mode. The  
Nitrox display shows (Fig. 3.20.):  
• the oxygen percentage, labeled with O2%, is shown in the left side of the center  
window  
• the set oxygen partial pressure limit, labeled with PO2, is shown in the upper right  
display  
• the maximum allowed depth based on the set oxygen percentage and partial  
pressure limit  
• the current oxygen toxicity exposure shown with an Oxygen Limit Fraction (OLF)  
bar graph along the left side of the display (instead of the CBT).  
In Dive mode, the oxygen percentage labeled with O2% and the current oxygen toxicity  
exposure shown with an Oxygen Limit Fraction (OLF) bar graph are shown (Fig. 3.21.  
and Fig. 3.22.). During a dive, the oxygen partial pressure, labeled with PO2, is also  
shown instead of the maximum depth in the upper right display, if the partial pressure  
is greater than 1.4 bar or the set value (Fig. 3.23.).  
By pressing the TIME button during a nitrox dive, the alternative display appears,  
which includes (Fig. 3.24.):  
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• current time  
• Consumed Bottom Time  
• maximum depth (during decompression stop dive).  
After five seconds the display will automatically revert to the original display.  
m
m
m
PO2  
MAX  
O2%  
O2%  
O2%  
NO DEC TIME  
OLF  
OLF  
OLF  
ºC  
DIVE TIME  
ºC  
DIVE TIME  
Fig. 3.20. Nitrox display.  
Maximum depth based on  
set O2% (21%) and PO2  
(1.4 bar) is 54.1 m [177 ft].  
Fig. 3.21. Surface display Fig. 3.22. Diving in Nitrox  
in the Nitrox mode.  
mode. The O2% is set to  
32%.  
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BEEP  
BEEP  
BEEP  
...  
m
m
m
MAX  
MAX  
PO2  
O2%  
O2%  
O2%  
NO DEC TIME  
NO DEC TIME  
NO DEC TIME  
DIVE TIME  
OLF  
OLF  
C
B
T
ºC  
TIME  
ºC  
DIVE TIME  
ºC  
Fig. 3.23. Oxygen  
Fig. 3.24. Alternative  
display. Pressing TIME  
button displays current  
time, maximum depth,  
temperature, CBT and  
O2%,  
Fig. 3.25. The lowest bar  
graph blinks to indicate  
that the OLF value shown  
relates to OTU.  
partial pressure and OLF  
displays. There is an  
audible alarm as oxygen  
partial pressure is greater  
than 1.4 bar or set value,  
and/or the OLF has  
reached 80% limit.  
3.4.3. Oxygen Limit Fraction (OLF)  
In addition to tracking the diver’s exposure to nitrogen, the instrument tracks the  
exposure to oxygen, if set to Nitrox mode. These calculations are treated as entirely  
separate functions.  
The dive computer calculates separately for Central Nervous System oxygen toxicity  
(CNS) and Pulmonary Oxygen toxicity, the latter measured by the addition of Oxygen  
Toxicity Units (OTU). Both fractions are scaled so that the maximum tolerated exposure  
for each is expressed as 100%.  
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The Oxygen Limit Fraction (OLF) has 11 segments, each representing 10%. The  
OLF bar graph displays only the value of the higher of the two calculations. When  
the OTU value meets and exceeds the CNS value then in addition to displaying its  
percentage the lowest segment blinks to indicate that the value shown relates to OTU  
(Fig. 3.25.). The oxygen toxicity calculations are based on the factors listed in section  
6.3. “Oxygen Exposure”.  
3.5. AT THE SURFACE  
3.5.1. Surface Interval  
An ascent to any depth shallower than 1.2 m [4 ft] will cause the DIVING display to  
be replaced by the SURFACE display, giving the following information (Fig. 3.26.):  
• maximum depth of last dive in meters [ft]  
• present depth in meters [ft]  
• no-flying warning indicated by an airplane icon (Table 3.3)  
• Altitude Adjustment setting  
• Personal Adjustment setting  
• Diver attention symbol indicates surface interval time should be prolonged  
(Table 3.3)  
• STOP label for 5 min, if the Mandatory Safety Stop was violated  
• Er, if the decompression ceiling was violated (= Error Mode) (Fig. 3.29, Table 3.3)  
• the current temperature with °C for Centigrade [or °F for Fahrenheit]  
• dive time of last dive in minutes, shown as DIVE TIME.  
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Or when the TIME button is pressed:  
• the current time, shown as TIME instead of the DIVE TIME  
• the surface time in hours and minutes (separated by a colon), telling the duration  
of the present surface interval (Fig. 3.27.)  
• the desaturation/no-flying time in hours and minutes is shown next to the airplane  
in the center window of the display (Fig. 3.28.).  
If set to Nitrox mode, the following information will also be shown:  
• the oxygen percentage labeled with O2% is shown on the left side of the center  
window  
• the current oxygen toxicity exposure shown with an Oxygen Limit Fraction (OLF)  
bar graph along the left side of the display.  
3.5.2. Dive Numbering  
Several repetitive dives are considered to belong to the same repetitive dive series  
when the dive computer has not counted the no-flying time to zero. Within each series,  
the dives are given individual numbers. The first dive of the series will be numbered  
as DIVE 1, the second as DIVE 2, the third as DIVE 3, etc.  
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m
m
m
MAX  
MAX  
MAX  
NO  
NO  
SURF  
NO  
SURF  
TIME  
TIME  
ºC  
DIVE TIME  
ºC  
TIME  
ºC  
TIME  
Fig. 3.26. Surface display. Fig. 3.27. Surface interval, Fig. 3.28. Surface interval,  
You have surfaced from  
a 18 minute dive, which  
maximum depth was  
20.0 m [66 ft]. The present time display.  
depth is 0.0 m [0 ft].  
Surface time display.  
Pressing TIME button  
once will show surface  
no-flying time. Pressing  
TIME button twice will  
show no-flying time,  
indicated by an airplane  
symbol.  
Airplane symbol indicates  
that you should not fly and  
Diver Attention Symbol  
indicates that you should  
prolong your surface  
interval time because of  
excess micro-bubbles.  
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TABLE 3.3. WARNING SYMBOLS  
Symbol on display  
Indication  
Diver Attention Symbol - Extend Surface Interval  
Violated Decompression Ceiling  
Do Not Fly Symbol  
If you start a new dive with less than 5 minutes of surface interval time, the dive computer  
interprets this as a continuation of the previous dive and the dives are considered to  
be the same. The diving display will return, the dive number will remain unchanged,  
and the dive time will begin where it left off. After 5 minutes on the surface, subsequent  
dives are, by definition, repetitive. The dive counter displayed in the Planning Mode  
will increment to the next higher number if another dive is made.  
3.5.3. Flying After Diving  
The no-flying time is shown in the center window next to the airplane image. Flying  
or travelling to a higher altitude should be avoided at any time the computer counts  
down the no-flying time.  
NOTE  
The airplane symbol is not shown on the stand-by display. You should  
always activate the dive computer and check that the airplane symbol  
is not displayed prior to flying.  
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The no-flying time is always at least 12 hours or equivalent to the so-called desatura-  
tion time (if longer than 12 hours).  
In the permanent Error mode the no-flying time is 48 hours.  
Divers Alert Network (DAN) recommends the following on no-flying times:  
• A minimum surface interval of 12 hours would be required in order to be reason-  
ably assured a diver will remain symptom free upon ascent to altitude in a com-  
mercial jetliner (altitude up to 2400 m [8000 ft]).  
• Divers who plan to make daily, multiple dives for several days, or make dives  
that require decompression stops, should take special precautions and wait for  
an extended interval beyond 12 hours before flight. Further, the Undersea and  
Hyperbaric Medical Society (UHMS) suggests divers using standard air cylinders  
and exhibiting no symptoms of decompression illness wait 24 hours after their  
last dive to fly in an aircraft with cabin pressure up to 2400 m [8000 ft]. The only  
two exceptions to this recommendation are:  
• If a diver had less than 2 hours total accumulated dive time in the last 48 hours,  
then a 12 hour surface interval before flying is recommended.  
• Following any dive that required a decompression stop, flying should be delayed  
for at least 24 hours, and if possible, for 48 hours.  
• Suunto recommends that flying is avoided until all the DAN and UHMS guidelines  
and the dive computer wait to fly conditions are satisfied.  
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Diver Attention Symbol  
Violated Decompression Ceiling  
Do Not Fly Symbol  
m
MAX  
NO  
ºC  
DIVE TIME  
Fig. 3.29. Surface  
Mode after a violated  
decompression dive. Er  
symbol indicates that  
you have violated the  
ceiling for more than three  
minutes. You must not dive  
again for at least 48 hours.  
3.6. AUDIBLE AND VISUAL ALARMS  
The dive computer features audible alarms to advise when important limits are ap-  
proached or to acknowledge preset alarms.  
A short single beep occurs, when:  
• the dive computer is activated.  
• when the dive computer automatically returns to the TIME mode.  
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Three single beeps with a two second interval occurs, when:  
• the no-decompression dive turns into a decompression stop dive. An arrow point-  
ing upwards and the blinking ascent warning ASC TIME will appear (Fig. 3.15.).  
Continuous beeps for 5 seconds occur, when:  
• the maximum allowed ascent rate, 10 m/min [33 ft/min], is exceeded. SLOW and  
STOP warnings will appear (Fig. 3.12.).  
• the Mandatory Safety Stop ceiling is exceeded. A downward pointing arrow will  
appear (Fig. 3.14.).  
• the decompression ceiling depth is exceeded. An error warning Er and a down-  
ward pointing arrow appear. You should immediately descend to, or below, the  
ceiling. The instrument will otherwise enter a permanent Error Mode within three  
minutes, indicated by a permanent Er (Fig. 3.18.).  
You are able to preset alarms before the actual dive. The user programmable alarms  
can be set for maximum depth and dive time. The alarms activate when:  
• The preset maximum depth is reached  
• continuous beep series for 24 seconds or until any button is pressed.  
• the maximum depth blinks as long as the present depth value exceeds the ad-  
justed value.  
• The preset dive time is reached  
• continuous beep series for 24 seconds or until any button is pressed.  
• the dive time blinks for one minute, if no button is pressed.  
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OXYGEN ALARMS IN NITROX MODE  
Three double beeps for 5 seconds occur, when:  
• the OLF bar graph reaches 80%. The segments exceeding the 80% limit start to  
blink (Fig. 3.23.)  
• the OLF bar graph reaches 100%.  
The blinking of the segments exceeding 80% will stop, when the OLF is not loading  
anymore. At that point the PO2 is less than 0.5 bar.  
Continuous beeps for 3 minutes occur, when:  
• the set oxygen partial pressure limit is exceeded. The maximum depth is replaced  
with a current blinking PO2 value. You should immediately ascend above the PO2  
depth limit (Fig. 3.23.).  
WARNING WHEN THE OXYGEN LIMIT FRACTION INDICATES THAT THE  
MAXIMUM LIMIT IS REACHED, YOU MUST IMMEDIATELY  
ASCEND UNTIL THE WARNING STOPS BLINKING! Failure to do  
so may lead to improper use, serious injury or death.  
3.7. HIGH ALTITUDE DIVES AND PERSONAL ADJUSTMENT  
The dive computer can be adjusted both for diving at altitude and also to increase the  
conservatism of the mathematical nitrogen model.  
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3.7.1. Altitude Adjustment  
When programming the instrument for the correct altitude, you need to select the correct  
Altitude Mode according to Table 3.4. The dive computer will adjust its mathematical  
model according to the entered altitude mode, giving shorter no-decompression times  
at higher altitudes (see Section 6.1. “Operating Principles”, Table 6.1. and 6.2.).  
TABLE 3.4. ALTITUDE ADJUSTMENT RANGES  
Altitude mode  
Symbol on display  
Altitude range  
A0  
A1  
A2  
0 - 300 m [0 - 1000 ft]  
300 - 1500 m [1000 - 5000 ft]  
1500 - 3000 m [5000 - 10000 ft]  
The entered Altitude Adjustment Mode is indicated by mountain symbols (A0,  
A1 = one mountain, or A2 = two mountains). Section 4.2.4. “ Personal Adjustments”  
describes how the Altitude Mode is adjusted.  
Traveling to a higher elevation can temporarily cause a change in the equilibrium of  
dissolved nitrogen in the body. It is recommended that you acclimate to the new altitude  
by waiting at least three hours before making a dive.  
3.7.2. Personal Adjustment  
There are adverse personal factors for DCI which divers can predict in advance and  
input into the decompression model. Factors that may affect susceptibility to decom-  
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pression illness vary between divers and also for the same diver from one day to  
another. The three-step PersonalAdjustment Mode is available, if a more conservative  
dive plan is desired.  
The personal factors which tend to increase the possibility of DCI include, but are  
not limited to:  
• cold exposure - water temperature less than 20°C [68°F]  
• the diver is below average physical fitness level  
• diver fatigue  
• diver dehydration  
• previous history of DCI  
• stress  
• obesity  
The Personal Adjustment Mode is indicated by a diver symbol and plus signs  
(P0 = a diver, P1 = diver +, or P2 = diver ++). Section 4.2.4. “ Personal Adjustments”  
describes how the Personal Mode is adjusted.  
This feature should be used to adjust the computer to be more conservative, according  
to personal preference, by entering the suitable PersonalAdjustment Mode with the help  
of Table 3.5. In ideal conditions, retain the default setting, P0. If conditions are more  
difficult or other mentioned factors which tend to increase the possibility of DCI exist,  
select P1 or even the most conservative P2. As a result the dive computer adjusts its  
mathematical model according to the entered PersonalAdjustment Mode, giving shorter  
no-decompression times (see section 6.1. “Operating Principles”, Table 6.1 and 6.2).  
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TABLE 3.5. PERSONAL ADJUSTMENT RANGES  
Personal  
mode  
Symbol on Condition  
display  
Desired tables  
P0  
P1  
P2  
Ideal condition  
Default  
Some mentioned factors or  
conditions exist  
Progressively more  
conservative  
Several mentioned factors or  
conditions exist  
3.8. ERROR CONDITIONS  
The dive computer has warning indicators that alert the user to react to certain situ-  
ations that would significantly increase the risk of DCI. If you do not respond to its  
warnings, the dive computer will enter an Error Mode, indicating that the risk of DCI  
has greatly increased. If you understand and operate the dive computer sensibly, it is  
very unlikely you will ever put the instrument into the Error Mode.  
OMITTED DECOMPRESSION  
The Error Mode results from omitted decompression, i.e. when you stay above the  
ceiling for more than three minutes. During this three-minute period the Er warning is  
shown and the audible alarm beeps.After this, the dive computer will enter a permanent  
Error Mode. The instrument will continue to function normally if you descend below  
the ceiling within this three-minute period.  
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Once in the permanent Error Mode only the ER warning is shown in the center window.  
The dive computer will not show times for ascent or stops. However, all the other dis-  
plays will function as before to provide information for ascent. You should immediately  
ascend to a depth of 3 to 6 m [10 to 20 ft] and remain at this depth until air supply  
limitations require you to surface.  
After surfacing, you should not dive for a minimum of 48 hours. During the permanent  
Error Mode, the Er text will be displayed in the center window and the Planning Mode  
will be disabled.  
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4. MENU BASED MODES  
To make yourself familiar with the menu based functions, please use your Quick  
Reference Guide supplied with the ZOOP together with the information in this chapter.  
The main menu based functions are grouped under 1) Memory and 2) Setting modes.  
The use of the menu based functions  
1. Activate the menu based modes by pressing once the SMART (MODE) button  
in the Dive Mode (Fig. 4.1.).  
2. Scroll the mode options by pressing the arrow up/down buttons. When scroll-  
ing the options, the label and an equivalent number are shown on the display  
(Fig. 4.2. – 4.3.).  
3. Press the SMART (Select) button once to select the desired option.  
4. Scroll the submode options by pressing the arrow up/down buttons. When  
scrolling the options, the label and an equivalent number are shown on the  
display.  
5. Select the desired option by pressing once the SMART (Select) button. Repeat  
the procedure, if there are more submodes.  
6. Depending on the mode, you are now able to have a look at the memories or  
make desired settings (use the the arrow up/down buttons). The SMART button  
is used to Quit or to confirm the settings (OK).  
If you do not press any of the buttons for 5 minutes while in a Menu based mode, the  
instrument beeps and returns to the timekeeping display.  
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EXIT / QUIT!  
By pressing the SMART button for more than 1 second, any menu based function  
or submode can be quit and the dive computer will return directly to the Dive Mode.  
QUIT  
SELECT  
SELECT  
OPTIONS  
Fig. 4.1. Main menu  
based Mode options.  
[2 MODE].  
Fig. 4.2. Memory option.  
[1 MEMORY].  
Fig. 4.3. Set option.  
[2 SET].  
THE LIST OF THE MENU BASED MODES  
1. MEMORY FUNCTIONS [1 MEMORY]  
1. Logbook and Dive Profile Memory [1 LOGBOOK]  
2. Dive History Memory [2 HISTORY]  
3. PC Settings [3 PC SET]  
2. SET MODES [2 SET]  
1. Air or Nitrox Oxygen settings [1 MODEL]  
2. Set Alarms [2 SET ALMS]  
1. Maximum depth alarm setting  
2. Dive time alarm setting  
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3. Set time and date [3 SET TIME]  
1. Time display, time, date and year settings  
4. Personal Adjustments [4 SET ADJ]  
1. Altitude adjustment  
2. Personal adjustment  
3. Dive computer units setting  
NOTE  
The menu based modes cannot be activated until 5 minutes after  
the dive.  
4.1. MEMORY FUNCTIONS [1 MEMORY]  
The memory options (Fig. 4.4.) for this dive computer include the combined Logbook  
and Dive Profile Memory (Fig. 4.5. – 4.11.), Dive History Memory (Fig. 4.12. – 4.13.).  
The dive entry time and date is registered in the Logbook memory. Always check be-  
fore diving that the time and date are correctly set, especially after traveling between  
different time zones.  
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page 1  
DIVE  
QUIT  
SELECT  
SELECT  
TIME  
OPTIONS  
Fig. 4.4. Memory options. Fig. 4.5. Logbook option.  
Fig. 4.6. Logbook, page I.  
Scroll different pages of  
specific dive.  
[3 MEMORY].  
[1 LOGBOOK].  
page 2  
page 3  
DIVE  
DIVE  
DIVE  
MAX  
STOP ASC TIME  
QUIT  
AVG  
O2%  
SURF  
QUIT  
QUIT  
TIME  
OLF  
ºC  
DIVE TIME  
DIVE TIME  
page 4  
Fig. 4.7. Logbook, page II. Fig. 4.8. Logbook, page III. Fig. 4.9. Logbook, page IV.  
Main dive related data.  
Surface interval time and  
average depth  
Profile of specific dive.  
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4.1.1. Logbook and Dive Profile Memory [1 LOGBOOK]  
This instrument has a very sophisticated high capacity Logbook and Profile Memory,  
with a data recording interval of 30 seconds. Dives shorter than the recording interval  
are not registered.  
To enter the Logbook Memory Mode select MODE- MEMORY- LOGBOOK.  
For each dive there are four pages of logbook dive information. Use the scroll but-  
tons to scroll the display between Logbook pages I, II, III and IV. The data of the most  
recent dive is shown first.  
The logbook dives can be scrolled through displaying only the first page of each dive,  
or scrolling through the 4 different pages of a dive.  
When at the first page of a dive use the MODE button to change the scroll sequence.  
When the arrow icon is next to the Mode button the scroll button will scroll through  
the first page only of each dive.  
When Select is displayed next to the mode button the scroll buttons will scroll through  
the four pages of the selected dive.  
The END text is displayed between the oldest and most recent dive. (Fig. 4.11.)  
Note that chronological sequence in the logbook is determined by the date, not by  
the dive number.  
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The following information will be shown on four pages:  
Page I, main display (Fig. 4.6.)  
• dive number in the dive series  
• dive entry time and date.  
Page II (Fig. 4.7.)  
• dive number in the dive series  
• maximum depth  
NOTE  
Due to lower resolution, the reading may differ from the maximum  
depth reading of the Dive History up to 0.3 m [1 ft].)  
• total dive time  
• temperature at the maximum depth  
• Altitude Adjustment setting  
• Personal Adjustment setting  
• SLOW label, if the diver has violated the maximum ascent rate  
• STOP label, if the Mandatory Safety Stop was violated  
• ASC TIME label, if the dive was a decompression stop dive  
• Diver attention symbol, if the symbol was displayed when dive was started  
• downward pointing arrow, if the ceiling was violated  
• oxygen percentage  
• maximum OLF during the dive (only in Nitrox mode).  
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Page III (Fig. 4.8.)  
• dive number in the dive series  
• average depth  
• surface interval time before the dive  
Page IV (Fig. 4.9.)  
• dive number in the dive series  
• the profile of the dive, automatic scrolling during which:  
• logbook symbol blinks at the point when the user has pressed the PLAN button  
for Bookmark  
• O % during the dive profile  
• bl2inking SLOW label when registered  
• blinking ASC TIME label when the dive became a decompression dive.  
Press the SMART (Select) button once to change the scroll buttons to scroll the dif-  
ferent dives forward and backward (Fig. 4.10.). Press the SMART (>Select) button  
again to change function of the scroll buttons back to scroll the different pages of the  
selected dive. When searching the dives, only the page 1 is shown. The END text is  
displayed between the oldest and the most recent dive (Fig. 4.11.).  
The memory will retain approximately the last 50 hours of dive time. After that, when  
new dives are added, the oldest dives are deleted. The contents of the memory will  
remain when the battery is changed (assuming that the replacement has been done  
according to the instructions).  
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DIVE  
QUIT  
SELECT  
TIME  
Fig. 4.10. Logbook,  
page I. Press SMART  
(Select) button once to  
be able to scroll between  
different dives.  
Fig. 4.11. Logbook, end  
of the memory. END text is  
displayed between oldest  
and the most recent dive.  
DIVE PROFILE MEMORY [PROF]  
The scrolling of the profile will start automatically when the Logbook page IV (PROF)  
is entered.  
With the default setting, the dive profile is recorded and displayed in 30-second incre-  
ments with each display being shown for about three seconds. The depths shown are  
the maximum values of each interval.  
Pressing any button stops the scrolling of the profile.  
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NOTE  
Several repetitive dives are considered to belong to the same repeti-  
tive dive series if the no-flying time has not ended.  
See ”Dive Numbering” in section 3.5.2. for further information.  
4.1.2. Dive History Memory [2 HISTORY]  
The Dive History is a summary of all the dives recorded by the dive computer. To  
enter the Dive History Memory Mode select MODE- MEMORY- HISTORY (Fig. 4.12.).  
The following information will be shown on the display (Fig. 4.13.):  
• the maximum depth ever reached  
• the total accumulated dive time in hours  
• the total number of dives.  
The Dive History Memory can hold a maximum of 999 dives and 999 diving hours.  
When these maximum values are reached, the counters will start again from zero.  
4.1.3. Data Transfer and PC-Interface [3 PC-SET]  
The instrument can be connected to a personal computer (PC), using the optional  
PC-Interface and its software. With the PC-Interface, dive data from the dive computer  
can be downloaded to a PC. The PC-Interface software can be used for educational  
and demonstration purposes, for planning dives, and for keeping a complete record  
of your dive history with the instrument. Complete Logbook data can also be included.  
Paper copies of your dive log and profiles can then easily be printed.  
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To enter the Data Transfer select MODE- 1 MEMORY- 3 PC - SET (Fig.4.14)  
The data transfer is carried out using the connector on the bottom of the unit.  
The following data is transferred to the PC:  
• depth profile of the dive  
• dive time  
• surface interval time  
• dive number  
• Altitude and Personal adjustment settings  
• oxygen percentage setting and maximum OLF (in NITROX Mode)  
• tissue calculation data  
• temperature at the maximum depth, beginning of the dive, and end of the dive  
• dive entry time (year, month, day and time)  
• additional dive information (e.g. SLOW and Mandatory Safety Stop violations,  
Dive Attention Mark, Bookmark, Surfaced Mark, Decompression Mark, Ceiling  
Error Mark)  
• identity number of the dive computer  
• personal information.  
It is also possible to manually add comments and other personal information to the PC  
based dive data files. The PC-Interface package comes complete with the interface  
unit, the software, and an instruction and getting started guide.  
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NOTE  
While in the Data Transfer Mode, the connector/water contacts are  
used only for the data transfer. The Dive Mode IS NOT automatically  
activated if the contacts are submerged.  
After you have finished the data transfer, press the SMART (Quit) to exit Data Transfer  
Mode [PC-SET]. If no button is operated or no data is transferred within 5 minutes, the  
instrument beeps and returns to the timekeeping display automatically.  
DIVE  
MAX  
QUIT  
SELECT  
SELECT  
DIVE TIME  
Fig. 4.12. Dive  
History Memory Mode.  
[2 HISTORY].  
Fig. 4.13. Dive History  
information. Total number  
of dives, dive hours and  
maximum depth.  
Fig. 4.14. Data Transfer  
mode. [3 PC SET].  
4.2. SET MODES [2 SET]  
The Set Mode (Fig. 4.15.) is divided into four submodes: dive computer model setting,  
alarm settings, time setting and personal adjustments.  
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4.2.1. Dive Computer Model Settings [1 SET MODEL]  
In the Model Setting mode the ZOOP can be set to function in Air or Nitrox model. To  
enter the model settings select MODE- SET- MODEL (Fig. 4.16). Select AIR if diving  
with standard air and select NITROX if diving with oxygen enriched air.  
4.2.1.1. Nitrox Oxygen Settings  
The correct oxygen percentage of the gas in your cylinder must always be entered  
into the computer to ensure correct nitrogen and oxygen calculations. Also the oxygen  
partial pressure limit must be set. In the Nitrox Setting mode the equivalent allowed  
maximum depth based on the chosen values will also be displayed.  
To enter the Nitrox/Oxygen Setting Mode select MODE- SET- MODEL- NITROX. The  
default oxygen percentage (O %) setting is 21% (air) and oxygen partial pressure  
(PO2) setting 1.4 bar (Fig. 4.172.).  
NOTE! The Nitrox settings will revert to default settings 21% (air) and PO2 1.4 bar  
after approximately 2 hours.  
4.2.2. Alarm settings [2 SET ALMS]  
In the alarm settings you can set a dive time alarm and a maximum depth alarm. To  
enter Alarm settings select MODE - SET - SET ALARMS (Fig. 4.18).  
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m
PO2  
O2%  
QUIT  
OK  
SELECT  
OPTIONS  
Fig. 4.15. Setting Options. Fig. 4.16. Set Model mode. Fig. 4.17. Setting Nitrox  
[4 SET].  
parameters, Oxygen  
percentage is 32%,  
oxygen partial pressure  
limit is 1.4 bar. The  
equivalent maximum  
depth is displayed as  
32.8 m [107 ft]. Press  
scroll buttons to change  
oxygen percentage and to  
set oxygen partial setting  
value. Accept settings by  
pressing MODE (OK).  
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m
MAX  
OK  
OK  
SELECT  
DIVE TIME  
Fig. 4.18. Set Alarms  
Mode.  
Fig. 4.19. Setting Dive  
Time Alarm. Press scroll  
buttons to change alarm  
on/off and to set dive time  
value.  
Fig. 4.20. Setting  
Maximum Depth Alarm.  
Press scroll buttons to  
change alarm on/off and to  
set maximum depth value.  
4.2.2.1. Dive Time Alarm Setting  
The instrument has one Dive Time Alarm Setting, which can be used for several  
purposes to add to your diving safety. The alarm can be set, for example, to your  
planned bottom time.  
Set the Dive Time alarm ON or OFF and the alarm time from 1 to 999 minutes.  
(Fig. 4.19).  
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4.2.2.2. Maximum Depth Alarm Setting  
You can set one depth alarm in the dive computer. The depth alarm is set to 40 m  
[131 ft] at the factory, but you are able to adjust it according your personal preference or  
switch it off. The depth range can be set from 3.0 m to 100 m [9 ft to 328 ft] (Fig. 4.20.).  
OK  
OK  
SELECT  
Fig. 4.21. Time Setting  
Fig. 4.22. Adjusting Time. Fig. 4.23. Adjusting Date.  
Mode.  
4.2.3. Setting Time and date [3 SET TIME]  
To enter the Time Setting Mode select MODE- SET- SET TIME (Fig. 4.21.)  
After entering this mode you are able to select between 12 h and 24 hour time formats  
and set the correct time by using the SMART (MODE) and scroll buttons (Fig. 4.22.).  
After this you are able to set the correct year, month and day in this order (Fig. 4.23.).  
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NOTE  
• The day of the week is automatically calculated in accordance with the date.  
• The date can be set within the range of Jan 1, 1990 to Dec. 31, 2089.  
4.2.4. Personal adjustments [4 SET ADJ]  
To enter the Personal adjustments mode select MODE- SET- SET ADJ (Fig. 4.24).  
The adjustments are altitude, personal and dive computer units  
The currentAltitude and PersonalAdjustment modes are shown when diving and at the  
surface. If the mode does not match the altitude or personal conditions (see section 3.7.  
“HighAltitude Dives and PersonalAdjustment”), it is imperative that you enter the correct  
selection before diving. Use theAltitudeAdjustment to select the correct altitude mode  
(Fig. 4.25.) Use the Personal Adjustment to add an extra level of conservatism  
(Fig. 4.26.).  
Use the units adjustment to choose choose between metric and imperial units  
(Fig. 4.27.).  
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OK  
OK  
SELECT  
Fig. 4.24. Adjustment  
Setting Mode.  
Fig. 4.25. Setting Altitude  
adjustment. Press scroll  
buttons to change altitude  
mode.  
Fig. 4.26. Setting  
Personal adjustment.  
Press scroll buttons to  
change personal mode.  
ft  
m
OK  
ºC  
ºF  
Fig. 4.27. Setting Metric/  
Imperial units.  
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5. CARE AND MAINTENANCE OF MY SUUNTO DIVING  
COMPUTER  
The SUUNTO dive computer is a sophisticated precision instrument. Although it is  
designed to withstand the rigors of scuba diving, you must treat it with the same proper  
care and caution as any other precision instrument.  
• WATER CONTACTS AND PUSH BUTTONS  
Contamination or dirt on the water contacts/connector or push buttons may  
prevent the automatic activation of the Dive Mode and cause problems during the  
data transfer. Therefore, it is important that the water contacts and push buttons  
are kept clean. If the water contacts are active (AC text remains on display) or the  
Dive Mode activates on its own, the reason for this is probably contamination or  
invisible marine growth, which may create an electric current between the con-  
tacts. It is important that the dive computer is carefully washed in fresh water after  
the day’s diving is completed. The contacts can be cleaned with fresh water and,  
if necessary, a mild detergent and a soft brush. Sometimes it might be necessary  
to remove the instrument from the protective boot for cleaning.  
• CARE OF YOUR DIVE COMPUTER  
• NEVER try to open the case of the dive computer.  
• Have your dive computer serviced every two years or after 200 dives (which-  
ever comes first) by an authorized dealer or distributor. This service will include  
a general operational check, replacement of the battery, and water resistance  
check. The service requires special tools and training. Therefore, it is advisable  
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to contact an authorized SUUNTO dealer or distributor for the biennial service.  
Do not attempt to do any servicing that you are not sure of.  
• Should moisture appear inside the case, immediately have the instrument  
checked by your SUUNTO dealer or distributor.  
• Should you detect scratches, cracks or other such flaws on the display that  
may impair its durability, immediately have it replaced by your SUUNTO dealer  
or distributor.  
• Wash and rinse the unit in fresh water after every use.  
• Protect the unit from shock, extreme heat, direct sunlight, and chemical attack.  
The dive computer cannot withstand the impact of heavy objects like scuba cyl-  
inders, nor chemicals like gasoline, cleaning solvents, aerosol sprays, adhesive  
agents, paint, acetone, alcohol, etc. Chemical reactions with such agents will  
damage the seals, case and finish.  
• Store your dive computer in a dry place when you are not using it.  
• The dive computer will display a battery symbol as a warning when the power  
gets too low. When this happens, the instrument should not be used until the  
battery has been replaced.  
• Do not fasten the strap of your dive computer too tightly. You should be able to  
insert your finger between the strap and your wrist. Shorten the strap by cutting  
it if you do not expect to need the extra length.  
• MAINTENANCE  
The instrument should be soaked, thoroughly rinsed with fresh water, then dried  
with a soft towel after each dive. Make sure that all salt crystals and sand parti-  
cles have been flushed out. Check the display for possible moisture or water. DO  
NOT use the dive computer if you detect any moisture or water inside. Contact an  
authorized Suunto dealer for battery replacement or other service.  
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CAUTION  
• Do not use compressed air to blow water off the unit.  
• Do not use solvents or other cleaning fluids that might cause damage.  
• Do not test or use the dive computer in pressurized air.  
• WATER RESISTANCE INSPECTION  
The water resistance of the unit must be checked after replacing the battery or  
after other service operations. The check requires special equipment and training.  
You must frequently check the display for any sign of leaks. If you find moisture  
inside your dive computer, there is a leak. A leak must be corrected without delay  
as moisture will seriously damage the unit, even beyond repair. SUUNTO does  
not take any responsibility for damage caused by moisture in the dive computer  
unless the instructions of this manual are carefully followed. In the event of a  
leak, immediately take the dive computer to an authorized SUUNTO dealer or  
distributor.  
sda  
For more information on service & warranty, please refer to FAQs on www.suunto.com.  
5.1. BATTERY REPLACEMENT  
NOTE  
It is advisable to contact an authorized Suunto dealer for battery  
replacement. It is imperative that the change is made in a proper  
manner to avoid any leakage of water into the battery compartment  
or computer.  
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CAUTION  
When the battery is changed all nitrogen and oxygen uptake data  
is lost. Therefore, the no-flying time shown by the computer should  
have reached zero or you must wait for 48 hours or preferably even  
100 hours between dives before you may dive again.  
All history and profile data, as well as the altitude, personal and alarm settings, will  
remain in the dive computer memory after the battery change. However, the clock  
time and time alarm setting is lost. In the NITROX Mode the Nitrox settings are also  
reverted back to default settings (21 % O2, 1.4 bar PO2).  
When working with the battery compartment, cleanliness is extremely important. Even  
the smallest dirt particles may cause a leakage when you dive.  
BATTERY KIT  
The battery kit includes a 3.0 V coin type lithium cell battery and a lubricated O-ring.  
When handling the battery do not make contact with both of the poles at the same  
time. Do not touch the surfaces of the battery with your bare fingers.  
TOOLS REQUIRED  
• A flat 1.5 mm screwdriver or a special tool for spring bars (K5857).  
• Soft cloth for cleaning.  
• Needlenose pliers or large screwdriver for turning securing ring.  
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BATTERY REPLACEMENT  
The battery and the buzzer are located in the back of the instrument in a separate  
compartment, the parts of which are shown in Fig. 5.1. To change the battery, follow  
the procedure below:  
1. Remove the computer from the console or boot.  
Wrist model:  
• Disassemble the shorter part of the strap with a flat 1.5 mm screwdriver or a  
special tool for spring bars. The longer part of the strap may stay on but removing  
it may ease the work later on.  
Console model:  
1. Remove the dive computer from the console according the instructions of the  
console.  
2. Thoroughly rinse and dry the computer.  
3. Open the securing ring of the battery compartment lid by pushing it down and  
rotating it clockwise. You may use a pointed nose pliers or a small screwdriver  
as an aid in the rotating. Put the pliers ends into the holes of the securing ring or  
the screwdriver onto the side of the right tooth on the ring (Fig. 5.2) and turn the  
ring clockwise. Care should be taken not to damage any of the parts.  
4. Remove the ring.  
5. Carefully remove the lid with the beeper attached to it. The lid can be removed  
by pressing with your finger on the outermost edge of the lid while at the same  
time pulling with your nail at the opposite side. Do not use sharp metal objects  
as they might damage the O-ring or the sealing surfaces.  
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6. Remove the O-ring and the battery retainer.  
7. Carefully remove the battery. Do not damage the electrical contacts or the seal-  
ing surface. Check for any traces of flooding, particularly between the beeper  
and the lid, or for any other damage. In case of a leak or any other damage,  
bring the dive computer to an authorized SUUNTO dealer or distributor for  
check and repair.  
8. Check the condition of the O-ring; a defective O-ring may indicate sealing or  
other problems. Dispose the old O-ring, even if it seems to be in good condition.  
9. Check that the battery compartment, battery holder and lid are clean. Clean with  
soft cloth if necessary.  
10. Gently insert the new battery in the battery compartment. Check the polarity of  
the battery: the “-” mark should point toward the bottom of the compartment and  
the “+” mark upwards.  
11. Reinstall the battery retainer in its correct position.  
12. Check that the new lubricated O-ring is in good condition. Put it in the right posi-  
tion on the battery compartment. Be very careful not to get any dirt on the o-ring  
or its sealing surfaces.  
13. Carefully press the lid onto the battery compartment with your thumb. It is better  
to press down the lid down one side first, this minimizes entrapped air and it is  
thus easier to hold down the lid. Make sure that the O-ring is not at any point  
protruding out on the edge.  
14. Put your other thumb through the locking ring. Press this thumb firmly against  
the lid and release the other one. Make sure that the lid is pressed completely  
down!  
15. Turn the locking ring counterclockwise with your free thumb and fingers until it  
snaps into its locked position.  
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16. The dive computer should now active it’s timekeeping mode and show time  
18:00 [6:00 PM] and date SA 01,01. Activate the instrument. Check that:  
• All display segments work.  
• The low battery warning is off.  
• The buzzer beeps and backlight works.  
• All the settings are correct. Reset if necessary.  
17. Install the dive computer back into the console or boot and reassemble the  
strap. The instrument is now ready for use.  
Wrist model:  
• Assembling into the boot: First insert the longer strap in its hole in the front of the  
boot and then the dive computer into its cavity in the boot starting at the back  
end. Then snap also the long strap end of the instrument into the boot. Stretch  
the boot as needed.  
• Assemble the shorter part of the strap. Use the spring bar tool or small screwdriv-  
er to compress the spring bars. Make sure that the spring bars get fully seated so  
they will not come off their holes.  
Console model:  
• Refit the dive computer in the console according the instructions of the console.  
CAUTION  
Check after the first dives for possible moisture under the transparent  
battery compartment lid, indicating a leak.  
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Complete Strap  
(V5841)  
Securing Ring (V5844)  
Short Strap with buckle  
(V5836)  
Battery Compartment Lid  
with buzzer (V5843)  
Spring Bar (K5588)  
Long Strap (K5592)  
O-Ring (K5664)  
Battery Retainer (V5842)  
Battery (K5597)  
Fig. 5.1. Instrument parts. The code after the name stands for spare part order number.  
Fig. 5.2. Opening of the securing ring.  
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6. TECHNICAL DESCRIPTION  
6.1. OPERATING PRINCIPLES  
NO-DECOMPRESSION LIMITS  
The no-decompression limits displayed by the dive computer for the first dive to a  
single depth (see Table 6.1. and Table 6.2.), are slightly more conservative than those  
permitted by the U.S. Navy tables.  
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TABLE 6.1. NO-DECOMPRESSION TIME LIMITS (MIN) FOR VARIOUS DEPTHS (M) FOR  
THE FIRST DIVE OF A SERIES.  
Personal Mode / Altitude Mode  
Depth P0/A0 P0/A1 P0/A2 P1/A0 P1/A1 P1/A2 P2/A0 P2/A1 P2/A2  
[m]  
9
- -  
124  
72  
52  
37  
29  
23  
18  
13  
11  
9
163  
89  
57  
39  
29  
24  
18  
14  
11  
9
130  
67  
43  
30  
23  
19  
15  
12  
9
163  
89  
57  
39  
29  
24  
18  
14  
11  
9
130  
67  
43  
30  
23  
19  
15  
12  
9
96  
54  
35  
25  
20  
16  
12  
9
130  
67  
43  
30  
23  
19  
15  
12  
9
96  
54  
35  
25  
20  
16  
12  
9
75  
45  
29  
21  
15  
12  
9
12  
15  
18  
21  
24  
27  
30  
33  
36  
39  
42  
45  
7
8
8
6
8
8
6
8
6
5
8
6
7
6
5
6
5
4
7
6
5
6
5
4
5
4
4
6
5
5
5
5
4
5
4
3
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TABLE 6.2. NO-DECOMPRESSION TIME LIMITS (MIN) FOR VARIOUS DEPTHS [FT] FOR  
THE FIRST DIVE OF A SERIES  
Personal Mode / Altitude Mode  
Depth P0/A0 P0/A1 P0/A2 P1/A0 P1/A1 P1/A2 P2/A0 P2/A1 P2/A2  
[ft]  
30  
- -  
120  
69  
50  
36  
28  
22  
17  
13  
10  
9
160  
86  
56  
38  
29  
23  
18  
14  
11  
9
127  
65  
41  
29  
23  
19  
15  
11  
9
160  
86  
56  
38  
29  
23  
18  
14  
11  
9
127  
65  
41  
29  
23  
19  
15  
11  
9
93  
53  
34  
25  
20  
15  
11  
9
127  
65  
41  
29  
23  
19  
15  
11  
9
93  
53  
34  
25  
20  
15  
11  
9
73  
43  
28  
20  
15  
11  
9
40  
50  
60  
70  
80  
90  
100  
110  
120  
130  
140  
150  
7
7
7
6
8
8
6
8
6
5
7
6
7
6
5
6
5
4
7
6
5
6
5
4
5
4
4
6
5
4
5
4
4
4
4
3
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ALTITUDE DIVING  
The atmospheric pressure is lower at high altitudes than at sea level. After traveling  
to a higher altitude, the diver will have additional nitrogen in his body, compared to  
the equilibrium situation at the original altitude. This “additional” nitrogen is released  
gradually in time and equilibrium is reached. It is recommended that you acclimate to  
the new altitude by waiting at least three hours before making a dive.  
Before high altitude diving, the instrument must be set to theAltitudeAdjustment mode  
to adjust the calculations for the new altitude. The maximum partial pressures of nitro-  
gen allowed by the mathematical model of the dive computer are reduced according  
to the lower ambient pressure.  
As a result, the allowed no-decompression stop limits are considerably reduced.  
SURFACE INTERVALS  
The dive computer requires a minimum surface interval of 5 minutes between dives. If  
a surface interval is shorter than 5 minutes, the next dive is treated as a continuation  
of the previous dive.  
6.2. SUUNTO REDUCED GRADIENT BUBBLE MODEL (RGBM)  
The Suunto Reduced Gradient Bubble Model (RGBM) is a modern algorithm for predict-  
ing both dissolved and free gas in the tissues and blood of divers. It was developed in  
a co-operation between Suunto and Bruce R. Wienke BSc, MSc. PhD. It is based on  
both laboratory experiments and diving data, including data from DAN.  
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It is a significant advance on the classical Haldane models, which do not predict free  
gas (microbubbles). The advantage of Suunto RGBM is additional safety through its  
ability to adapt to a wide variety of situations. Suunto RGBM addresses a number of  
diving circumstances outside the range of just dissolved gas models by:  
• Monitoring continuous multiday diving  
• Computing closely spaced repetitive diving  
• Reacting to a dive deeper than the previous dive  
• Adapting for rapid ascents which produce high micro-bubble (silent-bubble)  
build-up  
• Incorporating consistency with real physical laws for gas kinetics.  
Suunto RGBM Adaptive decompression  
The SUUNTO RGBM algorithm adapts its predictions of both the effects of micro-bubble  
build-up and adverse dive profiles in the current dive series. It will also change these  
calculations according to the personal adjustment you select.  
The pattern and speed of decompression at the surface is adjusted according to  
micro-bubble influence.  
Also on repetitive dives adjustment may be applied to the maximum allowable nitrogen  
overpressure in each theoretical tissue group.  
Depending on circumstances Suunto RGBM will adapt the decompression obligations  
by doing any or all of the following:  
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• Reducing no-decompression stop dive times  
• Adding Mandatory Safety Stops  
• Increasing decompression stop times  
• Advising an extended surface interval (Diver Attention symbol).  
Some patterns of diving cumulatively add a higher risk of DCI, e.g. dives with short  
surface intervals, repetitive dives deeper than earlier ones, multiple ascents, substan-  
tial multiday diving. When this is detected in addition to adapting the decompression  
algorithm the Suunto RGBM model will in some circumstances also advise, with the  
Diver Attention Symbol (review chapter 3.6) that the diver extend the surface interval.  
6.3. OXYGEN EXPOSURE  
The oxygen exposure calculations are based on currently accepted exposure time limit  
tables and principles. In addition to this the dive computer uses several methods to  
conservatively estimate the oxygen exposure. These include for example:  
• the displayed oxygen exposure calculations are upped to the next higher percent-  
age value  
• for recreational scuba diving, the recommended upper limit of 1.4 bar PO2 is used  
as a default  
• the CNS% limits up to 1.4 bar are based on 1991 NOAA Diving Manual limits, but  
the limits above 1.4bar are significantly shortened  
• the OTU monitoring is based on the long-term daily tolerance level and the recov-  
ery rate is reduced  
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Oxygen related information displayed by the dive computer is also designed to ensure  
all warnings and displays in the appropriate phases of a dive. E.g. the following informa-  
tion will be shown before and during a dive, when the computer is set in Nitrox mode:  
• the selected O2%  
• the color-coded OLF% bar graph for either CNS% or OTU%  
• audible alarms are given and the OLF bar graph starts to blink when the 80% and  
100% limits are exceeded  
• the blinking of the bar graph stops, when the PO2 is below 0.5 bar  
• audible alarms are given and the actual PO2 value blinks when it exceeds the  
preset limit  
• in dive planning the maximum depth according to the O2% and maximum PO2  
selected.  
6.4. TECHNICAL SPECIFICATION  
Dimensions and weight:  
• Diameter: 61 mm [2.4in].  
• Thickness: 28 mm [1.1in].  
• Weight: 68g [2.4 oz].  
Depth Gauge:  
• Temperature compensated pressure sensor.  
• Calibrated complying with EN 13319, in fresh water the readings are about 3%  
smaller.  
• Maximum depth of operation: 80 m [262 ft] (complying with EN 13319).  
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• Accuracy: ± 1% of full scale or better from 0 to 80 m [262 ft] at 20°C [68°F]  
(complying with EN 13319).  
• Depth display range: 0 … 99.9 m [328 ft].  
• Resolution: 0.1 m from 0 to 99.9 m [1 ft from 0 to 328 ft].  
Temperature display:  
• Resolution: 1°C [1.5°F].  
• Display range: -9 ... +50°C [-9 ... +122°F].  
• Accuracy: ± 2°C [± 3.6°F] within 20 minutes of temperature change.  
Calendar Clock:  
• Accuracy: ± 25 s/month (at 20°C [68°F]).  
• 12/24 h display.  
Other displays:  
• Dive time: 0 to 999 min, counting starts and stops at 1.2 m [4 ft] depth.  
• Surface time: 0 to 99 h 59 min.  
• Dive counter: 0 to 99 for repetitive dives.  
• No-decompression time: 0 to 199 min (- - after 199).  
• Ascent time: 0 to 99 min (- - after 99).  
• Ceiling depths: 3.0 to 100 m [10 to 328 ft].  
Displays only in Nitrox mode:  
• Oxygen%: 21 - 50.  
• Oxygen partial pressure display: 1.2 - 1.6 bar depending on the limit setting.  
• Oxygen Limit Fraction: 1 - 110% with 10% resolution (bar graph).  
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Logbook/Dive Profile Memory:  
• Recording interval: 30 seconds  
• Depth accuracy: 0.3 m [1 ft].  
Operating Conditions  
• Normal altitude range: 0 to 3000 m [10000 ft] above sea level.  
• Operating temperature: 0°C to 40°C [32°F to 104°F].  
• Storage temperature: -20°C to +50°C [ -4°F to +122°F].  
It is recommended that the instrument be stored in a dry place at room temperature.  
NOTE  
Do not leave the dive computer in direct sunlight!  
Tissue Calculation Model  
• Suunto RGBM algorithm (developed by SUUNTO and Bruce R. Wienke, BS, MS  
and PhD).  
• 9 tissue compartments.  
• Tissue compartment halftimes: 2.5, 5, 10, 20, 40, 80, 120, 240 and 480 minutes  
(on gassing). The off gassing halftimes are slowed down.  
• Reduced gradient (variable) “M” values based on diving habit and dive violations.  
The “M” values are tracked up to 100 hours after a dive.  
• The EAN and oxygen exposure calculations are based on recommendations  
by R.W. Hamilton, PhD and currently accepted exposure time limit tables and  
principles.  
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Battery  
• One 3 V lithium battery: CR 2450 (K5597) and O-ring 1.78 mm x 31.47 mm  
70 ShA (K5664).  
• Battery storage time (shelf life): Up to three years.  
• Replacement: Every two years or more often depending on dive activity.  
• Life expectancy at 20°C [68°F]:  
• 0 dives/y  
2 years  
• 100 dives/y 1.5 years  
• 300 dives/y 1 year  
The following conditions have an affect on the expected battery lifetime:  
• The length of the dives.  
• The condition in which the unit is operated and stored (e.g. temperature/cold  
conditions). Below 10°C [50°F] the expected battery lifetime is about 50-75% of  
that at 20°C [68°F].  
• The use of the audible alarms.  
• The quality of the battery (some lithium batteries may exhaust unexpectedly,  
which cannot be tested in advance).  
• The time the dive computer has been stored until it gets to the customer. The battery  
is installed into the unit at the factory.  
NOTE  
Low temperature or an internal oxidation of the battery may cause  
the battery warning even though the battery has enough capacity.  
In this case, the warning usually disappears when the Dive Mode  
is activated again.  
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7. SUUNTO LIMITED WARRANTY FOR SUUNTO DIVING  
COMPUTERS AND SUUNTO DIVING COMPUTER  
ACCESSORIES  
Suunto warrants that during the Warranty Period Suunto or a Suunto Authorized  
Service Center (hereinafter Service Center) will, at its sole discretion, remedy defects  
in materials or workmanship free of charge either by a) repairing, or b) replacing, or  
c) refunding, subject to the terms and conditions of this Limited Warranty. This Limited  
Warranty is only valid and enforceable in the country of purchase, unless local law  
stipulates otherwise.  
Warranty Period  
The Limited Warranty Period starts at the date of original retail purchase. The Warranty  
Period is two (2) years for display devices. The Warranty Period is one (1) year for  
accessories and consumable parts, including but not limited to chargeable batteries,  
chargers, docking stations, straps, cables and hoses.  
Exclusions and Limitations  
This Limited Warranty does not cover:  
1. a) normal wear and tear, b) defects caused by rough handling, or c) defects or  
damage caused by misuse contrary to intended or recommended use;  
2. user manuals or any third-party items;  
3. defects or alleged defects caused by the use with any product, accessory, soft-  
ware and/or service not manufactured or supplied by Suunto;  
4. replaceable batteries.  
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This Limited Warranty is not enforceable if item:  
1. has been opened beyond intended use;  
2. has been repaired using unauthorized spare parts; modified or repaired by  
unauthorized Service Center;  
3. serial number has been removed, altered or made illegible in any way, as deter-  
mined at the sole discretion of Suunto;  
4. has been exposed to chemicals including but not limited to mosquito repellents.  
Suunto does not warrant that the operation of the Product will be uninterrupted or error  
free, or that the Product will work with any hardware or software provided by a third party.  
Access to Suunto warranty service  
You must have proof of purchase to access Suunto warranty service. For instructions  
how to obtain warranty service, visit www.suunto.com/warranty, contact your local  
authorized Suunto retailer, or call Suunto Help Desk +358 2 2841160 (national or  
premium rates may apply).  
Limitation of Liability  
To the maximum extent permitted by applicable mandatory laws, this Limited Warranty  
is your sole and exclusive remedy and is in lieu of all other warranties, expressed or  
implied. Suunto shall not be liable for special, incidental, punitive or consequential  
damages, including but not limited to loss of anticipated benefits, loss of data, loss  
of use, cost of capital, cost of any substitute equipment or facilities, claims of third  
parties, damage to property resulting from the purchase or use of the item or arising  
from breach of the warranty, breach of contract, negligence, strict tort, or any legal or  
equitable theory, even if Suunto knew of the likelihood of such damages. Suunto shall  
not be liable for delay in rendering warranty service.  
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8. SUUNTO DIVE MANAGER (SDM)  
Suunto Dive Manager (SDM) is optional PC software that greatly enhances the func-  
tionality of your Suunto Zoop.  
With the SDM software, you can download dive data from your dive computer to your  
PC. You can then view and organize all the data recorded with your Suunto Zoop. You  
can also print copies of your dive profiles.  
You can always download the latest version of Suunto Dive Manager from  
www.suunto.com.  
Please check for updates regularly as new features are constantly being developed.  
The following data is transferred to your PC:  
• depth profile of the dive  
• dive time  
• preceding surface interval time  
• dive number  
• dive start time (year, month, day and time)  
• dive computer settings  
• tissue calculation data  
• water temperature  
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• additional dive information (e.g. SLOW and Mandatory Safety Stop violations,  
Diver Attention Symbol, Bookmark, Surfaced Mark, Decompression Stop Mark,  
Ceiling Error Mark)  
• dive computer serial number  
• personal information (30 characters)  
Using SDM, you are able to enter setup options such as:  
• input a personal, 30-character field into the Suunto Zoop  
It is also possible to manually add comments, multimedia and other personal informa-  
tion to the PC-based dive data files.  
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9. GLOSSARY  
Altitude dive  
A dive made at an elevation greater than 300 m  
[1000 ft] above sea level.  
Ascent rate  
The speed at which the diver ascends toward the  
surface.  
ASC RATE  
Abbreviation for ascent rate.  
Ascent time  
The minimum amount of time needed to reach the  
surface on a decompression stop di  
ASC TIME  
Ceiling  
Abbreviation for ascent time.  
On a decompression stop dive the shallowest depth to  
which a diver may ascend based on computer nitrogen  
load.  
Ceiling Zone  
CNS  
On a decompression stop dive the zone between the  
ceiling and the ceiling plus 1.8 m [6 ft]. This depth  
range is displayed with the two arrows pointing toward  
each other (the ”hour glass” icon).  
Abbreviation for Central Nervous System toxicity.  
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Central Nervous System Toxicity caused by oxygen. Can cause a variety of  
Toxicity  
neurological symptoms. The most important of which  
is an epileptic-like convulsion which can cause a diver  
to drown.  
CNS%  
Central Nervous System toxicity limit fraction. Also note  
Oxygen Limit Fraction.  
Compartment  
DAN  
See “Tissue group”.  
Divers Alert Network.  
DCI  
Abbreviation for decompression illness.  
Decompression  
Time spent at a decompression stop or range before  
surfacing, to allow absorbed nitrogen to escape  
naturally from tissues.  
Decompression range  
Decompression illness  
On a decompression stop dive the depth range,  
between the floor and ceiling, within which a diver must  
stop for some time during ascent.  
Any of a variety of maladies resulting either directly  
or indirectly from the formation of nitrogen bubbles  
in tissues or body fluids, as a result of inadequately  
controlled decompression. Commonly called “bends”  
or “DCI”.  
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Dive series  
Dive time  
A group of repetitive dives between which the dive  
computer indicates some nitrogen loading is present.  
When nitrogen loading reaches zero the dive computer  
deactivates.  
Elapsed time between leaving the surface to descend,  
and returning to the surface at the end of a dive.  
EAD  
Abbreviation for equivalent air depth.  
Abbreviation for enriched air nitrox.  
EAN  
Enriched Air Nitrox  
Also called Nitrox or Enriched Air = EANx. Air that  
has some oxygen added. Standard mixes are EAN32  
(NOAA Nitrox I = NN I) and EAN36 (NOAA Nitrox II =  
NN II).  
Equivalent Air Depth  
Floor  
Nitrogen partial pressure equivalent table.  
The deepest depth during a decompression stop dive  
at which decompression takes place.  
Half-time  
After a change in ambient pressure, the amount  
of time required for the partial pressure of nitrogen  
in a theoretical compartment to go half-way from  
its previous value to saturation at the new ambient  
pressure.  
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Multi-level dive  
A single or repetitive dive that includes time spent at  
various depths and whose no-decompression limits are  
therefore not determined solely by the maximum depth  
attained.  
NITROX  
NOAA  
In sports diving refers to any mix with a higher fraction  
of oxygen than standard air.  
United States National Oceanic and Atmospheric  
Administration.  
No-decompression time The maximum amount of time a diver may remain at a  
particular depth without having to make decompression  
stops during the subsequent ascent.  
No-decompression dive Any dive which permits a direct, uninterrupted ascent  
to the surface at any time.  
NO DEC TIME  
OEA = EAN = EANx  
OLF  
Abbreviation for no-decompression time limit.  
Abbreviation for Oxygen Enriched Air Nitrox.  
Abbreviation for Oxygen Limit Fraction.  
Abbreviation for Oxygen Tolerance Unit.  
Is used to measure the Whole-Body-Toxicity.  
OTU  
Oxygen Tolerance Unit  
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Oxygen Limit Fraction  
O2%  
A term used by SUUNTO for the values displayed in  
the Oxygen Toxicity bargraph. The value is either the  
CNS% or the OTU%.  
Oxygen percentage or oxygen fraction in the breathing  
gas. Standard air has 21% oxygen.  
Oxygen partial pressure Limits the maximum depth to which the used Nitrox  
mixture can safely be used. The maximum partial  
pressure limit for enriched air diving is 1.4 bar. The  
contingency partial pressure limit is 1.6 bar. Dives  
beyond this limit have the risk for immediate oxygen  
toxicity.  
PO2  
Abbreviation for oxygen partial pressure.  
RGBM  
Abbreviation for Reduced Gradient Bubble Model.  
Reduced Gradient  
Bubble Model  
Modern algorithm for tracking both dissolved and free  
gas in divers.  
Repetitive dive  
Any dive whose decompression time limits are affected  
by residual nitrogen absorbed during previous dives.  
Residual nitrogen  
The amount of excess nitrogen remaining in a diver  
after one or more dives.  
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SURF TIME  
Abbreviation for surface interval time.  
Surface interval time  
Elapsed time between surfacing from a dive and  
beginning a descent for the subsequent repetitive dive.  
Tissue group  
Theoretical concept used to model bodily tissues  
for the construction of decompression tables or  
calculations.  
Whole-Body Toxicity  
Another form of oxygen toxicity, which is caused by  
prolonged exposure to high oxygen partial pressures.  
The most common symptoms are irritation in the  
lungs, a burning sensation in the chest, coughing and  
reduction of the vital capacity. Also called Pulmonary  
Oxygen Toxicity. See also OTU.  
DISPOSAL OF THE DEVICE  
Please dispose of the device in an appropriate way, treating it as  
electronic waste. Do not throw it in the garbage. If you wish, you  
may return the device to your nearest Suunto dealer.  
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DIVING MODE  
> 1.2 m / 4 ft  
TIME & STAND-BY MODE  
SURFACE MODE  
m
3 sec.  
Nitrox  
°C  
°C  
DIVE TIME  
display  
2 MODE OPTIONS  
Biip, biip!  
Timekeeping  
display  
Plan Time &  
alternate  
display  
2) SET  
1) MEMORY  
Bookmark Time &  
in proꢀle  
memory  
alternate  
display  
4 SET OPTIONS 3 MEMORY OPTIONS  
4) SET ADJ  
3) SET TIME  
2) SET ALARMS  
1) SET MODEL 3) PC SET  
2) HISTORY  
1) LOGBOOK  
(ALTITUDE)  
A0/A1/A2  
(PERSONAL)  
P0/P1/P2  
(UNITS)  
METR/IMP  
24H/AM/PM  
HOURS  
MINUTES  
YEAR  
ON/OFF  
DIVE TIME (min)  
ON /OFF  
AIR/NITROX  
O2%  
PC SETTINGS  
HISTORY  
DIVE 1, page 1 page 2 page 3 page 4  
DIVE 2, page 1 page 2 page 3 page 4  
DIVE N, page 1 page 2 page 3 page 4  
PO2  
ALARM DEPTH  
END  
MONTH  
DAY  
Copyright © Suunto Oy 12/2009. All rights reserved.  
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SUUNTO HELP DESK  
Global  
+358 2 284 1160  
USA (toll free)  
Canada (toll free)  
+1-800-543-9124  
+1-800-267-7506  
www.suunto.com  
Copyright © Suunto Oy 12/2009, 08/2011.  
Suunto is a registered trademark of Suunto Oy.  
All Rights reserved.  
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