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Suunto None Watch User Manual

1. 4 1 5 Setting the backlight Use the BACKLIGHT SETTING mode to turn the backlight on or off and to define how long it stays on for 5 10 20 30 or 60 seconds When the backlight is turned off it does not illuminate when an alarm sounds n SUUNTO SUUNTO ADJ UST WTH UP AND DOWN BUTTONS ACCEPT WTH SELECT BUTTON 4 1 6 Setting the tones The TONE SETTING mode allows you to activate or deactivate the tones SUUNTO ADJ UST WTH UP AND DOWN BUTTONS ACCEPT WITH SELECT BUTTON NOTE When the tones are off there are no audible alarms 4 2 AC water contacts The water and data transfer contact is located on the rear of the case When submerged the water contact poles are connected by the conductivity of the water and the AC symbol appears on the display The AC text is shown until the water contact deactivates 12 AC APPEARS IN THE TOP RIGHT CORNER OF THE DISPLAY WHEN THE DIVE COMPUTER IS IN CONTACT WITH WATER THIS ALSO ACTIVATES THE DIVE MODE Contamination or dirt on the water contact may prevent this automatic activation It is therefore important that the water contact is kept clean The contact can be cleaned with fresh water and a soft brush for example a tooth brush 4 3 Learning how to use your compass Suunto Cobra3 integrates a digital compass which can be used both while diving and on dry land and can be accessed from either the DIVE mode or TIME mode SUUNTO SUUNTO SUUNTO IF ACCESSE
2. Setting the tank pressure alarm cccccee ee ceee ee eeeeeeseneeeseaeees 21 5 9 Activation and Dre checKS scene deme esc adawasengadsoets 22 5 9 1 Accessing DIVE Mode 2 dors Ea Rod EDS EE Yd Vd wal Fog ea ERR 22 5 92 DIVE Mode acia ON ai decas ubt wr gni qd et Md 22 5 9 9 Battery Dower INGICALON sou cuu Hive tr de cad ctp Nr ota E Ri A wean nubs 23 5 94 Diving at altitude oie ob epo rri err edet pert OS 23 9595 Personal adjustments errire tes oS edEhLo BHO RERO RE bf nas 24 5 10 Solely SIONS PAP PE N coat oe Ta SE MEO AEO 25 5 10 1 Recommended Safety Stops sees 25 5 10 2 Mandatory Safety Stops ooocccccocccccoccccnncnnccnrnnn n 25 oT Deep stObDS oboe eee cias does 26 Be DIV ING sas fee EDS C Fd NU Een penu amende eM s GM ER 27 6 1 Diving in AIR mode DIV Bair ani ue vue S Rad DUM 27 bol Basic die dala aaa iia 27 O2 BOOKMARK siii ARAS AE E 28 0 19 Tank pressure dala a ios 28 6 14 ASCent rate IndICA Outta 29 B15 Sdlely SIODSu s A duas n EM E 29 61 6 DECOMPIESSIONIGIVES c edu sosta A ae ce antennae 29 6 2 Diving in NITROX mode DIVEnitrox ooooocococococccncncccncnnn rn o 32 6 2 1 Before diving in NITROX mode 0 ccc cece cece ence eee e teen eeeanees 32 5 22 OY SIMI plays caian 32 6 2 3 Oxygen limit traci n OLEI 2o cct Rare uaa RE DERURDUPRREX ORDER LPS 33 6 2 4 Gas change and multiple breathing gas mixes ccc ee eee eee ees 33 6 3 D
3. 3 m 10 ft increments ending at 45 m 150 ft No decompression limits longer than 99min are displayed as 36 SUUNTO SUUNTO SUUNTO SUUNTO SUUNTO WHEN ENTERING THE PLANNODEC MODE THE DISPLAY FIRST BRIEFLY SHOWS TISSUE LOADING THE REMAINING DESATURATION TIME BEFORE GOING INTO PLAN MODE USE UP AND DOWN BUTTONS TO SCROLL DIFFERENT NO DECOMPRESSION LIMITS NO DECOMPRESSION LIMITS LONGER THAN 99 MINUTES ARE DISPLAYEDAS The Planning mode takes into account the following information from previous dives e any calculated residual nitrogen e all dive history for the past four days The no decompression times given for different depths will therefore be shorter than before your first fresh dive You can exit the planning mode by pressing the MODE button NOTE The Planning mode is disabled in GAUGE mode and in Error mode see Section 5 6 Error conditions The planning mode calculates no decompression times for MIX1 only If an additional mix is enabled in the NITROX mode it does not affect the calculations in PLANNoDec mode Higher Altitude and conservative Personal Adjustment settings will shorten the no decompression time limits These limits at different Altitude and Personal Adjustment setting selections are explained in Section 5 9 4 Diving at altitude and in Section 5 9 5 Personal adjustments Dive numbering shown during dive planning Dives belong to the same repetitive dive series if the instrument was still
4. F the expected battery lifetime is about 50 75 of that at 20 C 68 F e The use of the backlight and audible alarms e The use of the compass e 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 in the unit at the factory NOTE Low temperature or an internal oxidation of the battery may activate the battery warning even though the battery has enough capacity In this case the warning usually disappears when the DIVE mode is activated again 10 2 RGBM The Suunto Reduced Gradient Bubble Model RGBM is a modern algorithm for predicting both dissolved and free gas in the tissues and blood of divers It was developed in 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 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 dissolved gas only models by e Monitoring continuous multiday diving e Computing closely spaced repetitive diving e Reacting to a dive deeper than the previous dive e Adapting to rapid ascents which produce high microbubble s
5. Mode activates on its own the reason for this is probably contamination or invisible marine growth which may create an electric current between the contacts 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 e Have your dive computer serviced every two years or after 200 dives whichever 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 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 e Should moisture appear inside the case or battery compartment immediately have the instrument checked by your SUUNTO dealer or distributor e 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 e Wash and rinse the unit in fresh water after every use e Protect the unit from shock extreme heat direct sunlight and chemical attack The di
6. Symbol if surface interval should be prolonged see Table 7 1 Alarms e the Deep Stop depth if activated e the Remaining air time SUUNTO DIVE DISPLAY PRESENT DEPTHIS 15 M NO DECOMPRESSION STOP TIME LIMIT IS 38 MN ELAPSED DIVE TIME IS 13 MIN 99 MNUTES OF REMAINING AIR TIME AND 202 BAR TANK PRESSURE Alternative displays by pressing the UP DOWN buttons show the elapsed dive time in minutes shown as DIVE TIME e the water temperature in C F e the maximum depth during this dive in meters feet indicated as MAX e the tank pressure the current time shown as TIME SUUNTO SUUNTO DOWN BUTTON TOGGLES BETWEEN MAXIMUM DEPTH CURRENT TIME AND TANK PRESSURE 27 SUUNTO SUUNTO UP BUTTON TOGGLES BETWEEN DIVE TIME AND WATER TEMPERATURE 6 1 2 Bookmark It is possible to record bookmarks in the profile memory during a dive These bookmarks are displayed when scrolling the profile memory on the display The bookmarks will also be shown as annotations in the downloadable Suunto Dive Manager PC software The bookmark logs the depth time and water temperature as well as compass heading if the compass has been enabled To make a bookmark in the profile memory during a dive press the SELECT button A brief confirmation will be given SUUNTO SUUNTO ABOOKMARK IS PLACED IN THE PROFILE MEMORY DURING A DIVE BY PRESSING THE SELECT BUTTON 6 1 3 Tank pressure data The pressure of your scuba cylin
7. 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 transparent battery compartment cover and 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 FAQs WHAT CAN DO TO MY SUUNTO DIVING COMPUTER MYSELF NOTE It is advisable to contact an authorized Suunto service distributor or retailer for any repairs Batteries and straps can be replaced by the user when the change is made in a proper manner to avoid any leakage of water into the battery compartment or computer Original battery replacement and strap kits must be used Batteries can be changed by the user in all diving computers except Stinger D4 D6 and D9 Instructions for changing batteries and straps can be found in the user manuals or at www suunto com and the user videos there WHAT ARE ORIGINAL SUUNTO ACCESSORIES Original Suunto accessories are only distributed through Suunto s worldwide network of author
8. battery has been replaced according to the instructions NOTE Several repetitive dives are considered to belong to the same repetitive dive series if the no fly time has not ended See Section 7 2 Dive numbering for further information 7 6 2 Dive history MEMHistory The dive history is a summary of all the dives recorded by the dive computer The following information will be shown on the display SUUNTO SUUNTO DIVE HISTORY DISPLAY TOTAL NUMBER OF DIVES DIVE HOURS AND MAXIMUM DEPTH 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 39 NOTE The maximum depth can be reset to 0 0 m 0 ft using the PC Interface unit and the downloadable Suunto Dive Manager software 7 7 Suunto Dive Manager SDM Suunto Dive Manager SDM is optional PC software that greatly enhances the functionality of your Suunto Cobra3 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 Cobra3 You can also plan dives print copies of your dive profiles and upload your dive logs to share with your friends at SuuntoSports com 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
9. counting down the no fly time at the beginning of the dive 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 7 2 Dive numbering 7 5 2 Simulation Mode PLANsimulator The Simulation mode can be used to become familiar with the features and displays of the device before diving to plan dives in advance for demonstrational or educational purposes or just for fun In the Simulation mode time runs faster than real time so after 15 seconds using a simulator the dive time will be one minute Dive Simulator The Dive Simulator is an excellent tool for familiarizing yourself with your dive computer and for planning your dives The Dive Simulator allows you to perform dive profiles of your choice and to see what the display would look like during an actual dive including basic dive information as well as audible and visual warnings 37 SUUNTO SUUNTO SUUNTO SUUNTO PRESS UP OR DOWN BUTTONS TO DESCEND OR ASCEND The mode can also be used to add the desired surface intervals for dive simulations Add the desired surface interval increments to the present surface interval by pressing the UP and DOWN buttons SUUNTO SUUNTO SUUNTO simdive 1 ADD SURFACE TIME IN Bb Olsuret mon lO 15 MINUTES INCREMEN
10. repair Suunto s dive computers and wristop computers can be registered online at www suunto com Model of Dive Computer Date of purchase Serial number Place of purchase Store name Store City Store Country Store stamp with date of purchase Name Address City Telephone Signature Country E mail www suunto com Suunto Oy 9 2008 10 2008 11 2008
11. the dive computer for the first dive to a single depth see Table 10 1 No decompression time limits for various depths m and Table 10 2 No decompression time limits for various depths ft are slightly more conservative than those permitted by the U S Navy tables Table 10 1 No decompression time limits for various depths m No decompression time limits mins for various depths m for the first dive of a series Depth Personal Mode Altitude Mode m PO AO PO A1 PO A2 P1 A0 P1 A1 163 130 163 130 130 96 89 67 89 67 67 54 57 43 57 43 43 35 39 30 39 30 29 29 23 24 24 a f 12 52 37 29 23 18 14 13 11 9 7 9 7 6 6 5 Table 10 2 No decompression time limits for various depths ft No decompression time limits mins for various depths ft for the first dive of a series Depth Personal Mode Altitude Mode ft PO AO PO A1 PO A2 P1 A0 P1 A1 P1 A2 P2 A0 P2 A1 P2 A2 9 12 15 18 21 24 27 30 33 36 39 42 45 30 160 127 160 127 92 127 92 73 40 86 65 86 65 52 65 52 43 50 56 41 56 41 34 41 34 28 60 38 29 38 29 25 29 25 20 70 29 29 20 15 80 23 23 15 11 90 18 11 9 100 14 9 T 110 11 7 6 8 4 No decompression time limits mins for various depths ft for the first dive of a series i 120 10 130 9 140 7 150 6 10 2 3 Altitude diving The atmospheric pressure is lower at high altitudes than at sea level After traveling to a higher altitude you will have
12. www suunto com or call a Suunto Help Desk national or premium rates may apply for further details on how to make a claim You will then be advised on how to bring your Product for warranty service Should you wish to return the Product by shipping it to your local authorized Suunto retailer please use prepaid freight When making a claim under this Limited Warranty you are required to include your name and address proof of purchase and or service registration card Suunto warranty registration at www suunto com is considered adequate for this purpose as required in your country which clearly indicates the serial number name and address of the seller the date and place of purchase and the product type The claim will be honored and the Product repaired or replaced at no charge and returned in a reasonable amount of time This shall be determined at the sole discretion of Suunto or a Suunto Authorized Service Center If the Product is found not to be covered by the terms and conditions of this Limited Warranty Suunto or a Suunto Authorized Service Centre reserve the right to charge a handling fee Any claim under this Limited Warranty is subject to you notifying Suunto or a Suunto Authorized Service center of the alleged defect within a reasonable time of it having come to your attention and in any event no later than before the expiry of the Warranty Period Other important notices Please remember to take backup copies of all important conten
13. 0 33 Oxygen exposure scada 49 TINTE LEECTUAE PROPER ITI uicesteMct rene rito be Rete ntu betae I ede E natu 50 TESTS COPIONE eue te aae a ideae ta t ove o Raten Restat na spei ta sls Oed RR RE oed nes 50 11 2 Trademarks ia 50 TRS Patente c 50 12 DISCLAIMER Si E DRESSER OU P UE M E Oe 51 12 1 SERS tes ponia O cee nak 51 PO ata st tout a cet E a pce ech PTT 51 13 SUUNTO LIMITED WARRANTY FOR SUUNTO DIVING COMPUTERS AND SUUNTO DIVING COMPUTER ACCESSORIES c cece cc cece e eee e nene 52 14 DISPOSAL OF THE DEVICE asis Ead 55 GEO ei A Pp ats ca ace octane cot Rows aetna 56 1 WELCOME TO THE WORLD OF SUUNTO DIVING INSTRUMENTS Suunto Cobra3 was designed to help you get the most out of your diving By reading this manual and becoming familiar with the functions of your dive computer you can begin a new era in your diving With integrated digital compass air integration and gas switching Suunto Cobra3 simplifies your diving experience because all the information you need relating to depth time tank pressure decompression status and direction is available on one easy to read screen To get the most out of your Suunto Cobra3 please read this instruction manual carefully and make sure you understand the use displays and limitations of the instrument before using it To make life easier we ve included a glossary of dive specific terminology at the back of the manual 2 WARNINGS CAUTIONS AND NOTES Throughout this m
14. ARISING FROM BREACH OF THE WARRANTY BREACH OF CONTRACT NEGLIGENCE STRICT TORT OR ANY OTHER LEGAL OR EQUITABLE THEORY EVEN IF SUUNTO KNEW OF THE LIKELIHOOD OF SUCH DAMAGES SUUNTO SHALL NOT BE LIABLE FOR DELAY IN RENDERING SERVICE UNDER THE LIMITED WARRANTY OR LOSS OF USE DURING THE TIME THE PRODUCT IS BEING REPAIRED 54 14 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 representative 99 GLOSSARY Air time Altitude dive Ascent rate ASC RATE Ascent time ASC TIME Ceiling Ceiling zone Central nervous system toxicity CNS CNS Compartment DAN DCI Decompression Decompression range Decompression illness Dive series Dive time AP EAD EAN Enriched air nitrox Equivalent air depth Floor Half time HP 56 The amount of dive time remaining based on a calculation of cylinder pressure and ambient pressure and present air consumption A dive made at an elevation greater than 300 m 1000 ft above sea level The speed at which the diver ascends toward the surface Abbreviation for ascent rate The minimum amount of time needed to reach the surface on a decompression stop dive Abbreviation for ascent time On a decompression stop dive the shallowest depth to which a diver may ascend based on computed nitrogen load On a decompre
15. COBRA USER S GUIDE SUUNTO Present Depth Daily Alarm Indicator Active Water Contact Indicator Dive Alarm Indicator S UNTO Diver Attention Symbol No Fly Icon d A UN EP Current Time Display e ee ft Mode Indicator vo Lal Lal y OmU m No Decompression Time Y CE ASE TIN Total Ascent Time Safety Stop Indicator Ceiling Depth Deep Stop Ceiling Safety Deep Stop Time Surface Interval Time No Fly Time Compass Display Tank Pressure Bar Graph Wireless Transmitter Indicator Ascent Rate Bar Graph Date Maximum Depth Dc Oxygen percentage nitrox mode Temperature Time PO Nitrox Mode Tank pressure OLF Nitrox Mode Low Battery Warning 1 WELCOME TO THE WORLD OF SUUNTO DIVING INSTRUMENTS 5 2 WARNINGS CAUTIONS AND NOTES 0 0 00 cee ce scence Ir 6 SOOUUNTOJAI A GLANCE usura drid 9 3 1 JNavigating In the Menus mini boii teens A ce pues td 9 3 2 Button symbols and functions cece eect c eee e ee eee eect eee ee eeneeeeanees 9 4 GETTING STARTED WITH YOUR SUUNTO Cobra ccc cece cece 11 4 1 TIME MOOG SCUING Sins ccccacncckeneetirerveaiene ria amd s e Eno xr ed fee ps Ed es 11 4 1 1 Setting the alarm oococccccccccocccccocococo cana mmn 11 21 2 CU Me 11 41 9 Seting the dale coi A to 11 A AAS SUING the URSS 12 2 1 5 Setting thesbackligbit euis e rk rn wader cR Ida 12 4 1 6 SeN MELONES ous e t cenpe Purses rs R Pur
16. D FROM TIME MODE TIME AND BEARING ARE DISPLAYED AT THE BOTTOM OF THE SCREEN IF ACCESSED FROM DIVE MODE CURRENT DEPTHAND TIME OR MAXIMUM DEPTH AS WELLAS BEARING OR DIVE TIME OR TEMPERATURE ARE DISPLAYED When accessed from DIVE mode toggle between the alternative displays by pressing the UP DOWN buttons 4 3 1 Compass display The Suunto Cobra3 displays the compass as a graphical representation of a compass rose The rose displays the cardinal and half cardinal points in addition to which the current bearing is also displayed numerically 4 3 2 Locking a bearing A bearing can be locked to help you follow a selected course and directional arrows point towards the locked bearing Locked bearings are stored in the memory for later analysis and are available the next time the compass is activated SUUNTO SUUNTO TO LOCK A BEARING PRESS SELECT The Suunto Cobra3 also provides help for navigating square and triangular patterns as well as navigating a return heading This is made possible by following graphical symbols in the center of the compass display 13 Table 4 1 Locked bearing symbols Symbol Explanation 000000000 EL NN are M S S li I towards the locked bearing E You are 90 or 270 degrees from the locked bearing You are 120 or 240 degrees from the locked bearing You are 180 degrees from the locked bearing 4 3 3 Compass settings You can define the compass settings calibration declinatio
17. DCI exist select P1 or even the most conservative P2 The dive computer then adjusts its mathematical model according to the entered Personal Adjustment setting giving shorter no decompression times see Section 10 2 2 No decompression limits Table 10 1 No decompression time limits for various depths m and Table 10 2 No decompression time limits for various depths ft Table 5 5 Personal Adjustment settings Personal Condition Desired tables adjustment value Ideal conditions Default Some risk factors or conditions exist Progressively more conservative Several risk factors or conditions exist The Suunto Cobra3 also allows experienced divers who are willing to accept a greater level of risk to adjust the RGBM model The default setting is 10096 which gives full RGBM effect Suunto strongly advises you to use full RGBM effect Statistically very experienced divers have less incidents with DCI The reason for this is unknown but it is possible that some level of physiological and or psychological accommodation can take place when you are very experienced as a diver Thus for certain divers and diving conditions it may be desirable to set attenuated 5096 RGBM mode See Table 5 6 RGBM model settings Table 5 6 RGBM model settings RGBM setting Desired Tables 10096 Standard Suunto RGBM model Full RGBM effects Default Attenuated RGBM model Smaller RGBM effects higher risk 24 5 10 Safety Stops Safe
18. LY DIVERS TRAINED IN THE PROPER USE OF SCUBA DIVING EQUIPMENT SHOULD USE A DIVE COMPUTER No dive computer can replace the need for proper dive training Insufficient or improper training may cause you to commit errors that may lead to serious injury or death THERE IS ALWAYS A RISK OF DECOMPRESSION ILLNESS DCI FOR ANY DIVE PROFILE EVEN IF YOU FOLLOW THE DIVE PLAN PRESCRIBED BY DIVE TABLES OR A DIVE COMPUTER NO PROCEDURE DIVE COMPUTER OR DIVE TABLE CAN PREVENT 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 precaution you should consult a physician regarding your fitness before diving SUUNTO STRONGLY RECOMMENDS THAT SPORT DIVERS LIMIT THEIR MAXIMUM DEPTH TO 40 M 130 FT OR TO THE DEPTH CALCULATED BY THE COMPUTER BASED ON THE SELECTED O AND A MAXIMUM PO OF 1 4 BAR WARNING WARNING WARNING WARNING WARNING WARNING WARNING DIVES THAT REQUIRE 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 USE BACK UP INSTRUMENTS Make sure that you use back up instrumentation including a depth gauge submer
19. ND ENTERED THE ANALYZED VALUE INTO YOUR DIVE COMPUTER Failure to verify cylinder contents and enter the appropriate O into your dive computer will result in incorrect dive planning information THE DIVE COMPUTER WILL NOT ACCEPT FRACTIONAL PERCENTAGE VALUES OF OXYGEN CONCENTRATION DO NOT ROUND UP FRACTIONAL PERCENTAGES For example 31 896 oxygen should be entered as 3196 Rounding up will cause nitrogen percentages to be understated and will affect decompression calculations If you want 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 WARNING WARNING WARNING NOTE SELECT THE CORRECT ALTITUDE ADJUSTMENT SETTING When diving at altitudes greater than 300 m 1 000 ft the Altitude Adjustment feature must be correctly selected in order for the computer to calculate the decompression status The dive computer is not intended for use at altitudes greater than 3 000 m 10 000 ft Failure to select the correct Altitude Adjustment setting or diving above the maximum altitude limit will result in erroneous dive and planning data SELECT THE CORRECT PERSONAL ADJUSTMENT SETTING 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 calculations more conservative Failure to select the correct Personal Adjustment se
20. NITROX mode the Dive Planning mode calculates using the 0 and PO values that are currently in the computer To set the nitrox mixes refer to Section 5 8 3 Setting the nitrox values Default nitrox settings In NITROX mode the Suunto Cobra3 allows you to set 1 or 2 nitrox mixes containing 21 99 oxygen In the NITROX mode the default setting for MIX1 is standard air 21 O3 It remains in this setting until the O2 is adjusted to any other percentage of oxygen 22 99 The default setting for maximum oxygen partial pressure is 1 4 bar however you are able to set it in the range of 0 5 1 6 bar MIX2 is set to OFF by default To set MIX2 refer to Section 6 2 4 Gas change and multiple breathing gas mixes Oxygen percentages and maximum oxygen partial pressures for MIX2 are stored permanently 6 2 2 Oxygen displays When NITROX mode is activated the display will show the information in the figure below In NITROX mode the maximum operational depth is calculated based on set 0 and PO values SUUNTO NITROX DIVE MODE ACTIVATION MAXIMUM OPERATIONAL DEPTH BASED ON SET 0 21 AND PO 1 4 BAR IS 56 7 M Of roem 1002 f DEEPSTOP OFF If set to NITROX mode the Suunto Cobra3 will additionally show on the alternative display the oxygen percentage labeled 05 e the set oxygen partial pressure limit labeled PO e the current oxygen toxicity exposure labeled OLF e maximum depth current time e water t
21. TS e 2 Ol Surft esp 20 LIO E 7 6 MEMORY mode The memory options include a dive logbook MEMLogbook and dive history MEMHistory SUUNTO SUUNTO SUUNTO SUUNTO The dive time and date are registered in the Logbook memory Always check before diving that the time and date are correctly set especially after traveling between different time zones 7 6 1 Dive logbook MEMLogbook The Suunto Cobra3 has a very sophisticated high capacity Logbook and Profile Memory The data is recorded in the profile memory based on the selected sample rate The END OF LOGS text is displayed between the oldest and most recent dive The following information will be shown on three pages 38 SUUNTO SUUNTO SUUNTO SUUNTO THERE ARE THREE PAGES OF LOGBOOK DIVE INFORMATION USE SELECT BUTTON TO SCROLL BETWEEN LOGBOOK PAGES I II AND III THE DATA OF THE MOST RECENT DIVE IS SHOWN FIRST Page l main display e maximum depth e date of dive e type of dive AIR NITROX GAUGE dive start time dive number e oxygen percentage for Mix1 e total dive time in minutes in all modes Page Il e maximum depth e warnings e consumed tank pressure Page Ill e water temperature e tank pressure NOTE The memory will retain approximately the last 42 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 providing that the
22. UGE so that for example nitrox settings are only available in the NITROX submode The following figure shows how to enter the DIVE mode settings menu SUUNTO SUUNTO SUUNTO SUUNTO SUUNTO USE UP AND DOWN BUTTONS TO TOGGLE BETWEEN DIVE SETTINGS NOTE Some settings cannot be changed until 5 minutes has elapsed after the dive 5 8 1 Setting the depth alarm You can set a depth alarm in the dive computer Depth Alarm O ADJ UST WTH UP AND on DOWN BUTTONS ACCEPT WITH SELECT BUTTON The depth alarm is factory set to 30 m 100 ft but you can adjust it according to your personal preference or switch it off altogether The depth range can be set from 3 m to 100 m 9 ft to 328 ft 5 8 2 Setting the dive time alarm The Suunto Cobra3 has a dive time alarm setting which when activated can be used for several purposes to add to your diving safety 19 A SUUNTO SUUNTO Alarm Tira on DOWN BUTTONS ACCEPT WITH SELECT BUTTON NOTE With a range of 1 999 minutes the alarm can be set to your planned bottom time for example 5 8 3 Setting the nitrox values If set to the NITROX mode the correct oxygen percentage of the gas in your cylinder and additional gases must always be entered into the computer to ensure correct nitrogen and oxygen calculations In addition the oxygen partial pressure limit must be set When in the NITROX setting mode the equivalent allowed maximum depth based on the chosen setting will also be d
23. acing the first stop about halfway between the maximum depth and the ceiling depth After the first Deep Stop is completed another Deep Stop will be prompted halfway to the ceiling and so on until the ceiling depth is reached The Deep Stop length can be set to 1 or 2 minutes 26 6 DIVING This section contains instructions on how to operate the dive computer and interpret its displays You ll find that this dive computer is easy to use and read Each display shows only the data relevant to that specific diving mode 6 1 Diving in AIR mode DIVEair In this section we look at how to make the most of the dive computer when diving with standard air To activate DIVEair mode please see Section 5 9 1 Accessing DIVE mode SUUNTO DIVE HAS J UST BEGUNAND AVAILABLE NO DECOMPRESSION TIME IS OVER 99 MINUTES SO NO VALUE IS DISPLAYED NOTE The dive computer will remain in the Surface mode at depths less than 1 2 m 4 ft At depths greater than 1 2 m 4 ft the instrument will go into the DIVE mode automatically However it is recommended that you activate the Surface mode manually before entering the water in order to perform the necessary dive pre checks 6 1 1 Basic dive data During a No decompression dive the following information is displayed e your present depth in meters feet e the available no decompression time in minutes as NO DEC TIME e the ascent rate presented as a bar graph on the right side e the Diver Attention
24. additional nitrogen in your body compared to the equilibrium situation at the original altitude This additional nitrogen is released gradually over time and equilibrium is restored It is recommended that you acclimatize to a new altitude by waiting at least three hours before making a dive Before high altitude diving the instrument must be set to the Altitude Adjustment mode to adjust the calculations for the new altitude The maximum partial pressures of nitrogen 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 OONO 10 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 For example e the displayed oxygen exposure calculations are raised to the next higher percentage value e for recreational scuba diving the recommended upper limit of 1 4 bar PO is used as a default e the CNS limits up to 1 6 bar are based on 1991 NOAA Diving Manual limits e the OTU monitoring is based on the long term daily tolerance level and the recovery rate is reduced Oxygen related information displayed by the dive computer is also designed to ensure that all warnings and displays occur at the appropriate phases of a dive For example
25. anual important safety icons are displayed Three classifications are used to separate these icons by their order of importance WARNING CAUTION NOTE is used in connection with a procedure or situation that could result in serious injury or death is used in connection with a procedure or situation that could result in damage to the device is used to emphasize important information Before you go on to read the manual itself it is extremely important that you read the following warnings These warnings are intended to maximize your safety while using Suunto Cobra3 and must not be ignored WARNING WARNING WARNING WARNING WARNING READ THIS MANUAL Carefully read this manual in its entirety paying close attention to all the warnings listed below including Section 5 BEFORE DIVING Make sure that you fully understand the use displays and limitations of the dive computer because any confusion resulting from neglecting to follow this user s manual or from improper use of this device could cause you to commit errors that may lead to serious injury or death 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 conditions that tend to increase the risk of decompression illness DCI Therefore Suunto strongly recommends that the device is not used for any commercial or professional diving activities ON
26. assisting properly trained certified divers in planning and executing sport dives It is NOT A SUBSTITUTE FOR CERTIFIED SCUBA INSTRUCTION including training in the principles of decompression WARNING Diving with enriched air mixtures nitrox 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 Do not attempt to dive with any gas mix other than standard air without first receiving certified training in this specialty 5 1 The Suunto RGBM Deep Stop Algorithm Suunto s Reduced Gradient Bubble Model RGBM utilized in the Suunto Cobra3 predicts both dissolved and free gas in the 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 The Suunto Cobra3 uses traditional recommended safety stops as well as deep stops SUUNTO SUUNTO YOU ARE ADVISED TO MAKE A DEEPSTOP AT 18 M THE SECOND INDICATOR SHOWS THAT YOU HAVE 110 SECONDS LEFT OF YOUR DEEPSTOP In order to optimize the response to different increased risk situations an additional category of stop referred to as a Mandatory Safety Stop has been introduced The combination of stop types depends on the user settings and the specific di
27. ate 10 m per min 33 ft per activated backlight min is exceeded Ascent rate bar graph blinks and STOP warning appears Decompression ceiling depth is exceeded An error warning Er and a downward 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 You can set alarms for maximum depth dive time and tank pressure See also Section 5 8 DIVE mode settings and Section 4 1 TIME mode settings Table 5 2 Preset alarm types Continuous beep series for 24 seconds Preset maximum depth has Maximum depth blinks as long as the current depth value been exceeded exceeds the preset value Continuous beep series for 24 seconds or until any Preset dive time has been button is pressed exceeded Dive time blinks for one minute Continuous beep series for 24 seconds or until any Preset alarm time is reached button is pressed Current time blinks for one minute Table 5 3 Oxygen alarms in NITROX mode Continuous beeps for 3 minutes Set oxygen partial pressure limit is exceeded The and activated backlight alternative display is replaced with a current blinking PO value You should immediately ascend above the PO depth limit OLF value reaches 80 The OLF value will start to blink OLF value reaches 100 The OLF value will blink NOTE When the backlight is turned OFF it does not
28. bly shipping or at any other time in the delivery chain or otherwise and in any way acquired by you 3 defects or alleged defects caused by the fact that the Product was used with or connected to any product accessory software and or service not manufactured or supplied by Suunto or was used otherwise than for its intended use 4 replaceable batteries 52 This Limited Warranty is not enforceable if 1 the Product has been opened modified or repaired by anyone other than Suunto or a Suunto Authorized Service Centre 2 the Product has been repaired using unauthorized spare parts 3 the Product s serial number has been removed erased defaced altered or made illegible in any way and this shall be determined at the sole discretion of Suunto 4 the Product has been exposed to influence from chemical products 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 in combination with any hardware or software provided by a third party Access to Suunto warranty service Please access and review the online help resources available at www suunto com customer service or referred to in the Product manual before seeking warranty service If a claim under this Limited Warranty appears to be necessary please contact your local authorized Suunto retailer for contact information please visit the Suunto website
29. condition oxygen settings etc After activation all graphical display elements are turned on and the backlight and the beep are activated After this the selected altitude and personal settings are displayed as well as the RGBM and Deep Stop status A few seconds later the battery power indicator is shown SUUNTO SUUNTO SUUNTO SUUNTO Cy FGEm 100 DEEPSTDP OFF At this time perform your pre checks making sure that e the instrument operates in the correct mode and provides a complete display AIR NITROX GAUGE mode e the battery level is ok e the altitude personal adjustment Safety Deep stops and RGBM settings are correct e the instrument displays correct units of measurement Metric Imperial e the instrument displays the correct temperature and depth 0 0 m O ft the alarm beeps And if set to NITROX mode make sure that e the correct number of mixes is set and that the oxygen percentages are adjusted according to the measured nitrox blends in your cylinders 22 e the correct oxygen percentages are adjusted according to the measured oxygen percentages in your cylinders e the oxygen partial pressure limits are set correctly For more information on the NITROX mode refer to Section 6 2 Diving in NITROX mode DIVEnitrox The dive computer is now ready for diving 5 9 3 Battery power indication Temperature or internal oxidation of the battery affect the battery voltage If the instrument is stored
30. cy 0 3 m 1 ft Operating conditions e Normal altitude range 0 to 3 000 m 10 000 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 e Suunto Deep Stop RGBM algorithm developed by Suunto and Bruce R Wienke BSc MSc PhD e Otissue compartments e 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 Battery e One 3 V lithium battery CR 2450 Battery storage time shelf life Up to three years e Replacement Every three years or more often depending on dive activity 46 Life expectancy at 20 C 68 F e Odives year gt 3 years e 100 dives year gt 1 5 years e 300 dives year gt 1 year The following conditions have an effect on the expected battery lifetime e The length of the dives e The conditions in which the unit is operated and stored e g temperature cold conditions Below 10 C 50
31. d indicating a leak Secur O ing Ring Cobra case Battery Cobra console 2 Compart front Console screw ment Lid 3 5 x 16mm with buzzer C O Ring Cobra console Battery back Retainer E e Battery 45 10 TECHNICAL DATA 10 1 Technical specifications Dimensions and weight Diameter width 73 mm 2 85 in length 165 mm 6 50 in Thickness 35 mm 1 40 in e Weight 210 g 7 4 oz without hose Depth gauge Temperature compensated pressure sensor e Salt water calibrated in fresh water the readings are about 3 smaller calibrated in compliance with EN 13319 e Maximum depth of operation 100 m 328 ft complying with EN 13319 e Accuracy 1 of full scale or better from O to 80 m 262 ft at 20 C 68 F complying with EN 13319 Depth display range 0 to 150 m 492 ft Resolution 0 1 m from 0 to 100 m 1 ft from 0 to 328 ft Temperature display e Resolution 1 C 1 F Display range 20 to 50 C 9 to 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 e 12 24 h display Displays only in NITROX mode e Oxygen 21 99 Oxygen partial pressure display 0 2 3 0 bar Oxygen Limit Fraction 1 200 with 1 resolution Logbook dive profile memory Recording interval 20 seconds adjustable 1 10 20 30 60s e Memory capacity approximately 42 hours of diving with 20 second recording interval Depth accura
32. d 10 ft the CEILING label ceiling depth and the calculated Safety Stop time also appear in the display You should wait until the Mandatory Safety Stop warning disappears The total length of the Mandatory Safety Stop time depends on the seriousness of the ascent rate violation SUUNTO WHEN CEILING AND STOP ARE DISPLAYED MAKE AONE MINUTE MANDATORY SAFETY STOP IN THE DEPTH ZONE BETWEEN 6 MAND 3 M You must not ascend shallower than 3 m 10 ft with the Mandatory Safety Stop warning on If you ascend above the Mandatory Safety Stop ceiling a downward pointing arrow will appear and a continuous beeping starts You should immediately descend to or below the Mandatory Safety Stop ceiling depth If you correct this situation at any time during the dive there are no effects on the decompression calculations for future dives 25 a SUUNTO WHEN CEILING AND STOP ARE DISPLAYED IMMEDIATELY WITHIN 3 MINUTES DESCEND TO OR BELOW CEILING 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 that you prolong your surface interval time before your next dive 5 11 Deep stops Deep Stops are safety stops that occur deeper than traditional stops with the purpose of minimizing microbubble formation and excitation The Suunto RGBM model calculates deep stops iteratively pl
33. d end of a dive Abbreviation for equivalent air depth Abbreviation for enriched air nitrox Also called nitrox or Enriched Air EANx Air that has some oxygen added Standard mixes are EAN32 NOAA Nitrox NN I and EAN36 NOAA Nitrox Il NN Il Nitrogen partial pressure equivalent table The deepest depth during a decompression stop dive at which decompression takes place 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 Abbreviation for high pressure cylinder pressure Multi level dive Nitrox NOAA No decompression time No decompression dive NO DEC TIME OEA EAN EANx OLF OTU Oxygen tolerance unit Oxygen limit fraction O Oxygen partial pressure PO RGBM Reduced Gradient Bubble Model Repetitive dive Residual nitrogen SURF TIME Surface interval time Tissue group Whole body toxicity 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 In sports diving refers to any mix with a higher fraction of oxygen than standard air United States National Oceanic and Atmospheric Administration The maximum amount of time a diver may remain at a particular depth without having to make decompression stops during t
34. d slower than 10 m 33 ft per minute e make your decompression stop deeper than at the ceiling These factors will also increase the amount of air required to reach the surface Ceiling ceiling zone floor and decompression range When in decompression it is important that you understand the meaning of ceiling floor and decompression range e The ceiling is the shallowest depth to which you should ascend when in decompression At this depth or below you must perform all stops e The ceiling zone is the optimum decompression stop zone It is the zone between the minimum ceiling and 1 2 m 4 ft below the minimum ceiling 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 remember that the decompression will be very slow at or close to the floor Y CEILING Y 3m 10ft A 6m 18ft A 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
35. der in bars or psi is shown digitally in the lower left corner of the alternative display Whenever you start a dive the remaining air time calculation begins After 30 60 seconds sometimes more depending on your air consumption the first estimation of remaining air time will be shown in the left center window of the display The calculation is always based on the actual pressure drop in your cylinder and will automatically adapt to your cylinder size and current air consumption SUUNTO The change in your air consumption will be based on constant one second interval pressure measurements over 30 60 second periods An increase in air consumption will influence the remaining air time rapidly while a drop in air consumption will increase the air time slowly In this way an over optimistic air time estimation caused by a temporary drop in air consumption is avoided The remaining air time calculation includes a 35 bar 500 psi safety reserve This means that when the instrument shows the air time to be zero there is still about 35 bar 500 psi of pressure left in your cylinder depending on your air consumption rate With a high consumption rate the limit will be closer to 50 bar 725 psi and with a low rate closer to 35 bar 500 psi NOTE Filling your BC affects the air time calculation due to the temporary increase in air consumption NOTE A change of temperature will affect the cylinder pressure and consequently the air time calcula
36. e European Union EMC directive 89 336 EEC FIOH Topeliuksenkatu 41 a A Fl 00250 Helsinki Finland notified body no 0430 has EC type examined this type of personal protective equipment EN 250 Respiratory equipment Open circuit self contained compressed air diving apparatus Requirements testing marking The cylinder pressure gauge and the parts of this product used in measuring the cylinder pressure meet the requirements set in the section of the European Standard EN 250 that concern cylinder pressure measurements The instruments must be serviced by an authorized Suunto representative every second year or after 200 dives whichever comes first EN 13319 Diving accessories Depth gauges and combined depth and time measuring devices Functional and safety requirements test methods is a European diving depth gauge standard The Suunto Cobra3 is designed to comply with this standard 51 13 SUUNTO LIMITED WARRANTY FOR SUUNTO DIVING COMPUTERS AND SUUNTO DIVING COMPUTER ACCESSORIES This Limited Warranty is valid as of January 1st 2007 Suunto Oy Suunto provides this limited warranty to those who have purchased the Suunto Diving computer and or Suunto diving computer accessories Product Suunto warrants that during the Warranty Period Suunto or a Suunto Authorized Service Center will at its sole discretion remedy defects in materials or workmanship free of charge either by a repairing the Product or the parts
37. e Soft cloth for cleaning e Needlenose pliers or small screwdriver for turning securing ring 9 3 Replacing the battery The battery and the buzzer are located in the back of the instrument in a separate compartment To change the battery 1 Unscrew the four screws at the back of the elastomer console and remove the back cover 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 and turn the ring clockwise Be careful not to damage any of the parts 4 Remove the ring 5 Carefully remove the lid with the beeper attached to it You can remove the lid by pressing with your finger on the outermost edge of the lid while simultaneously pulling with your nail at the opposite side Don t use sharp metal objects as they might damage the O ring or the sealing surfaces 6 Remove the O ring and the battery retainer 7 Carefully remove the battery Do not damage the electrical contacts or the sealing surface 8 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 repai
38. e depth profile of the dive e dive time e preceding surface interval time e dive number e dive start time year month day and time e dive computer settings e Oxygen percentage settings and maximum OLF in NITROX mode e tissue calculation data e real time water temperature e additional dive information e g SLOW and Mandatory Safety Stop violations Diver Attention Symbol Bookmark Surfaced Mark Decompression Stop Mark Ceiling Error Mark Gas Change dive computer serial number e personal information 30 characters Using SDM you are able to enter setup options such as e input a personal 30 character field into the Suunto Cobra3 e reset the Dive History s maximum depth to zero It is also possible to manually add comments multimedia and other personal information to the PC based dive data files 7 8 www suuntosports com and Suunto Diving World at www suunto com diving When you have dived and transferred your dive data to your Suunto Dive Manager you can share your best experiences with other diving enthusiasts at SuuntoSports com It s a free and open Internet community where you can compare your underwater experiences with other Suunto users and learn from each other SuuntoSports com includes three sections In My Suunto you can register your dive computer and manage your membership profile The section also contains a personal event calendar The Communities section is meeting a place for smaller groups of S
39. e ufum tts 12 T2 AU Water CONACS etes tas put etes ds 12 4 3 Learning how to use your compass sssssssssssssss ee 13 4 9 1 COMPASS dll tatit ca tuti cascos dne ers 13 4 3 2 Locking a bearing rra raus eR IER X RARO TERRE tarada dear 13 2 3 9 C OIpelss SENINGS doo odon 14 5 BEFORE DIVINO 5 ait ui sd aeree nha eee Eee OL EPOD dn UEM MR Deu PER 16 5 1 The Suunto RGBM Deep Stop Algorithm sssseuseesseeseeeesse 16 Daza Emergency ASCOMS xxr eeu ss oi UE UAE 16 5 9 Dive Computer Iimitatlohis cse pae oh Rob Or C EDAM xa TREE RR REUS 16 SA s dt D ahem a 17 5 5 Audible and visual alarms inicia 17 XO ENOr CONGINONS rr 18 SARME AON ie itanamusesomectahagnatine TERE A a 18 5 7 1 Connecting Suunto Cobra3 to a regulator ccc cece eee e eee e ee nooo 19 3 02 DIVE MOUS S6UINGS int Aone tua ease towne gua Ue nia mean nore aea 19 5 8 1 Setting the depth alarm 0 cece cece cece cence eee ee eeeeeeseeneeneees 19 5 8 2 Setting the dive time alarm ccc cece cece eee eecee cocoa canarias 19 5 8 3 Setting the nitrox values a ie 20 5 8 4 Setting the personal altitude adjustments 0c cc cece eee eee ee ees 20 575 5 Setting The sample Tale c 21 5 8 6 Setting the Safety Stops Deep Stops ccc cece eee e eee e eens 21 5 8 7 Setting the RGBM values add dt 21 5 8 8 Setting the units 0 ccc cece cece e ee eee eee nesses mmn 21 5 8 9
40. einafter Warranty Period The different Warranty Periods are a Two 2 years for the diving computers b One 1 year for the consumable parts and accessories including but not limited to chargeable batteries chargers docking stations straps cables and hoses whether included in the diving computer sales package or sold separately To the extent your national laws permit the Warranty Period will not be extended or renewed or otherwise affected due to subsequent resale Suunto authorized repair or replacement of the Product However part s repaired or replaced during the Warranty Period will be warranted for the remainder of the original Warranty Period or for three 3 months from the date of repair or replacement whichever is longer Exclusions and Limitations This Limited Warranty does not cover 1 a normal wear and tear b defects caused by rough handling including without limitation defects caused by sharp items by bending compressing or dropping etc or c defects or damage caused by misuse of the Product including use that is contrary to the instructions provided by Suunto e g as set out in the Product s user guide and instruction manual and or e other acts beyond the reasonable control of Suunto 2 user manuals or any third party software even if packed or sold with the Suunto hardware settings content or data whether included or downloaded in the Product or whether included during installment assem
41. emain 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 5 7 Air integration The Cobra3 can be attached to the high pressure port of the regulator enabling you to receive cylinder pressure and remaining air time data 18 5 7 1 Connecting Suunto Cobra3 to a regulator When purchasing the Suunto Cobra3 we strongly recommend that you have your Suunto representative attach it to the first stage of your regulator However if you decide to attach it yourself follow the steps outlined below 1 Remove the high pressure HP port plug on the first stage of your regulator using an appropriate tool 2 Thread the high pressure hose of the Suunto Cobra3 into the HP port of your regulator with your fingers Tighten the hose fitting with a 16 mm 5 8 wrench DO NOT OVERTIGHTEN 3 Attach the regulator to the scuba cylinder and slowly open the valve Check for leaks by submerging the regulator first stage in water If leaks are detected check the condition of the O ring and sealing surfaces 5 8 DIVE mode settings Suunto Cobra3 has several user definable functions as well as depth and time related alarms that you can set according to your personal preferences The DIVE mode settings are dependent on the dive submode chosen AIR NITROX GA
42. emperature dive time e tank pressure SUUNTO SUUNTO SUUNTO SUUNTO DOWN BUTTON TOGGLES BETWEENO MAXIMUM DEPTH TANK PRESSURE AND CURRENT TIME UP BUTTON TOGGLES BETWEEN PO OLF DIVE TIME AND WATER TEMPERATURE 6 2 3 Oxygen limit fraction OLF If set to NITROX mode in addition to tracking the diver s exposure to nitrogen the instrument tracks the exposure to oxygen 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 The Oxygen Limit Fraction OLF displays only the value of the higher of the two calculations The oxygen toxicity calculations are based on the factors listed in Section 10 3 Oxygen exposure 6 2 4 Gas change and multiple breathing gas mixes The Suunto Cobra3 allows gas changes to enabled gas mixes during the dive Gas changes are made by following the procedure below CHANGING GAS MIX SCROLL THROUGH ENABLED MIXES BY PRESSING THE UP OR DOWN BUTTONS SELECT NEW MIX BY PRESSING THE SELECT BUTTON NOTE Mix number O and PO for the mixes are shown when scrolling If the set PO limit is exceeded it will be shown with the PO value blinking The dive computer does not allow you to change to a
43. er 10m 6 1 6 Decompression dives When your NO DEC TIME becomes zero your dive becomes a decompression dive so you must perform one or more decompression stops on your way to the surface The NO DEC TIME on your display will be replaced by an ASC TIME and a CEILING notation will appear An upward pointing arrow will also prompt you to start your ascent If you exceed the no decompression limits on a dive the dive computer will provide the 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 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 e the time needed to ascend to the ceiling at an ascent rate of 10 m 33 ft per minute The ceiling is the shallowest depth to which you should ascend e the time needed at the ceiling e the time needed at the Mandatory Safety Stop if any e the time needed to reach the surface after the mandatory decompression dives have been completed 29 NOTE In addition there may also be Mandatory Safety Stops which are not displayed in ASC TIME WARNING YOUR ACTUAL ASCENT TIME MAY BE LONGER THAN DISPLAYED BY THE INSTRUMENT The ascent time will increase if you e remain at depth e ascen
44. eriod or for three 3 months from the date of repair or replacement whichever is longer 43 9 BATTERY REPLACEMENT NOTE It is advisable to contact an authorized Suunto representative 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 CAUTION Defects caused by improper battery installation are not covered by the warranty CAUTION When the battery is changed all nitrogen and oxygen uptake data is lost Therefore the no fly time shown by the computer should have reached zero or you must wait for 48 hours or preferably up to 100 hours before you 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 settings are lost In the NITROX mode the nitrox settings also revert back to default settings MIX1 21 Os 1 4 bar PO MIX2 OFF When working with the battery compartment cleanliness is extremely important Even the smallest dirt particles may cause a leakage when you dive 9 1 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 9 2 Required tools e A Phillips head screwdriver
45. for a long period or used in cold temperatures the low battery warning may be displayed even though the battery has enough capacity In these cases re enter DIVE mode to receive the battery power indication After the battery check the Low Battery Warning is indicated by the battery symbol SUUNTO SUUNTO SUUNTO 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 replacement is recommended NOTE For safety reasons the backlight cannot be activated when the low battery warning is indicated by the battery symbol 5 9 4 Diving at altitude The dive computer can be adjusted both for diving at altitude and also to increase the conservatism of the mathematical nitrogen model When programming the instrument for the correct altitude you need to select the correct Altitude Adjustment settings according to Table 5 4 Altitude Adjustment settings The dive computer will adjust its mathematical model according to the entered altitude setting giving shorter no decompression times at higher altitudes see Table 10 1 No decompression time limits for various depths m and Table 10 2 No decompression time limits for various depths ft in Section 10 2 RGBM Table 5 4 Altitude Adjustment settings Alt adjustment value Altitude range 0 0 300 m 0 1000 ft 1500 3000 m 5000 10 000 ft NOTE Section 5 8 4 Setting the perso
46. gas whose set PO is exceeded In such a case the mix is shown but cannot be selected NOTE If no button is pressed in 15 seconds the dive computer will go back to the dive display without changing the gas mix Upon ascent the computer prompts you to change gas when the PO level you have set for the next mix allows a gas change The prompt is an audible 3 beeps and the current O mix starts to blink 6 3 Diving in GAUGE mode DIVEgauge If set to GAUGE mode the dive computer can be used as a bottom timer 33 In the GAUGE mode the total dive time is always displayed in minutes in the lower right corner In addition a Dive Timer in the center window displays time in minutes and seconds The center window Dive Timer is activated at the start of the dive and it can be reset during the dive and used as a stopwatch by pressing the SELECT button SUUNTO SUUNTO SUUNTO SUUNTO BY PRESSING THE SELECT BUTTON DURING A DIVE A BOOKMARK IS WRITTEN INTHE PROFILE MEMORY THE DIVE TIMER IS RESET AND THE PREVIOUSLY TIMED INTERVAL IS DISPLAYED BELOW NOTE The GAUGE mode does not provide decompression information NOTE There is no ascent rate monitoring in the GAUGE mode NOTE If you dive with the GAUGE mode it is not possible to change between the modes before the no fly time has counted down 34 7 AFTER DIVING Once back at the surface Suunto Cobra3 continues to provide post dive safety information and alarms Calculations to enable
47. he TIME mode settings the time alarm date units backlight and tones In this section we look at how to do this NOTE The display is illuminated by holding down the MODE button for more than 2 seconds The following figure shows how to enter the TIME SETTINGS menu SUUNTO SUUNTO SUUNTO SUUNTO SUUNTO USE UP AND DOWN BUTTONS TO TOGGLE BETWEEN ALARM TIME DATE UNITS BACKLIGHT AND TONES 4 1 1 Setting the alarm The dive computer has a daily alarm function When the daily alarm activates the screen blinks and the alarm sounds for 24 seconds Press any button to stop the alarm SUUNTO SUUNTO SUUNTO 1 aam ADJ UST WITH UP AND gt Ci EMEN DOWN BUTTONS ACCEPT WTH SELECT BUTTON 4 1 2 Setting the time In the TIME SETTING mode you are able to set the hour minute and second as well as choose between 12 and 24 hour display SUUNTO SUUNTO ADJ UST WTH UP AND DOWN BUTTONS ACCEPT WTH SELECT BUTTON 4 1 3 Setting the date Use the DATE SETTING mode to set the year month and day The day of the week is automatically calculated in accordance with the date 11 SUUNTO SUUNTO AD UST WTH UP AND DOWN BUTTONS ACCEPT WTH SELECT BUTTON 4 1 4 Setting the units In the UNITS SETTING mode you can choose to have the units displayed in either the metric or imperial system meters feet Celsius Fahrenheit etc SUUNTO SUUNTO ADJ UST WTH UP AND DOWN BUTTONS ACCEPT WTH SELECT BUTTON
48. he subsequent ascent Any dive which permits a direct uninterrupted ascent to the surface at any time Abbreviation for no decompression time limit Abbreviations for oxygen enriched air nitrox Abbreviation for oxygen limit fraction Abbreviation for oxygen tolerance unit Used to measure the whole body toxicity A term used by Suunto for the values displayed in the oxygen toxicity bar graph The value is either the CNS or the OTU Oxygen percentage or oxygen fraction in the breathing gas Standard air has 21 oxygen Limits the maximum depth to which the nitrox mixture can be safely 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 risk immediate oxygen toxicity Abbreviation for oxygen partial pressure Abbreviation for Reduced Gradient Bubble Model Modern algorithm for tracking both dissolved and free gas in divers Any dive whose decompression time limits are affected by residual nitrogen absorbed during previous dives The amount of excess nitrogen remaining in a diver after one or more dives Abbreviation for surface interval time Elapsed time between surfacing from a dive and beginning a descent for the subsequent repetitive dive Theoretical concept used to model bodily tissues for the construction of decompression tables or calculations Another form of oxygen toxicity which is caused by prolonged exposure to h
49. hrenheit psi units SUUNTO SUUNTO ADJ UST WTH UP AND DOWN BUTTONS ACCEPT WTH SELECT BUTTON 5 8 9 Setting the tank pressure alarm The tank pressure alarm can be set ON or OFF and in the range of 10 200 bar The alarm is the secondary cylinder pressure alarm point The alarm is activated when the tank pressure drops below the set limit The 50 bar alarm however is fixed and cannot be changed 21 SUUNTO SUUNTO TankAlarm A mgr ADJ UST WITH UP AND DOWN BUTTONS ACCEPT WITH SELECT BUTTON 5 9 Activation and pre checks This section describes how to activate the DIVE mode and explains the pre checks that it is highly recommended you perform before you get into the water 5 9 1 Accessing DIVE mode The Suunto Cobra3 has three diving modes AIR mode for diving with standard air only NITROX mode for diving with oxygen enriched mixtures and GAUGE mode for use as a bottom timer and for freediving The OFF mode disables the DIVE mode and allows the TIME mode to be used underwater The chosen dive mode is displayed when the DIVE mode is accessed and you can toggle between the submodes by pressing the UP DOWN buttons SUUNTO SUUNTO SUUNTO SUUNTO SUUNTO 5 9 2 DIVE mode activation The dive computer activates automatically wnen submerged deeper than 0 5 m 1 5 ft However it is necessary to activate the DIVE mode BEFORE diving to check the altitude and personal adjustment settings battery
50. igh 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 57 CUSTOMER SERVICE CONTACTS Global Help Desk 358 2 284 11 60 Suunto USA Phone 1 800 543 9124 Canada Phone 1 800 267 7506 Suunto website www suunto com COPYRIGHT This publication and its contents are proprietary to Suunto Oy Suunto Dive Computer Suunto Cobra3 and their logos are registered or unregistered trademarks of Suunto Oy All rights reserved While we have taken great care to ensure that information contained inthis documentation is both comprehensive and accurate no warranty of accuracy is expressed or implied Its content is subject to change at any time without notice SUUNTO TWO YEAR WARRANTY This product is warranted to be free of defects in material and or workmanship to the original owner for the above noted period does not include battery life Keep a copy of the original purchase receipt and make sure to get this warranty card stamped at the place of purchase The warranty originates from the date of purchase All warranties are limited and are subject to the restrictions given in the instruction manual This warranty does not cover the damage to the product resulting from improper usage improper maintenance neglect of care alteration improper battery replacement or unauthorized
51. ilent bubble build up e Incorporating consistency with real physical laws for gas kinetics 10 2 1 Suunto RGBM adaptive decompression The Suunto RGBM algorithm adapts its predictions of both the effects of microbubble build up and adverse dive profiles in the current dive series It also changes these calculations according to the personal adjustment you select The pattern and speed of decompression at the surface is adjusted according to microbubble influence On repetitive dives adjustment may also be applied to the maximum allowable nitrogen overpressure in each theoretical tissue group Depending on the circumstances Suunto RGBM will adapt the decompression obligations by doing any or all of the following e Reducing No decompression Stop dive times e Adding Mandatory Safety Stops e Increasing Decompression Stop times e Advising an extended surface interval Diver Attention symbol 47 Diver Attention Symbol Advice to Extend Surface Interval Some patterns of diving cumulatively add a higher risk of DCI for example dives with short surface intervals repetitive dives deeper than earlier ones multiple ascents and substantial 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 that you extend your surface interval 10 2 2 No decompression limits The no decompression limits displayed by
52. illuminate when an alarm is activated 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 5 6 Error conditions The dive computer has warning indicators that alert you to react to certain situations 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 the dive computer and operate it 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 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 displays 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 r
53. ils several times in a row it is possible that you are in an area with sources of magnetism such as large metal objects power lines or electric appliances Move to another location and try to calibrate the compass again If the calibration continues to fail contact an authorized Suunto service center Declination You can compensate for the difference between true north and magnetic north by adjusting the compass declination The declination can be found for example from sea charts or topographic maps of the local area SUUNTO AD UST WTH UP AND DOWN BUTTONS ACCEPT WITH SELECT BUTTON Time out You can set the compass time out to 1 3 or 5 minutes After the set time has passed from the latest button press the dive computer returns to the TIME or DIVE mode from the COMPASS mode SUUNTO SUUNTO AD UST WTH UP AND DOWN BUTTONS ACCEPT WTH SELECT BUTTON You can exit the COMPASS mode also by long pressing the SELECT button 15 5 BEFORE DIVING Do not attempt to use the dive computer without reading this user s manual in its entirety including all the warnings Make sure that you fully understand the use displays and limitations of the instrument If you have any questions about the manual or the Suunto Cobra3 please contact your Suunto representative before diving with the dive computer Always remember that YOU ARE RESPONSIBLE FOR YOUR OWN SAFETY When used properly Suunto Cobra3 is an outstanding tool for
54. isplayed Settings for an additional mix MIX2 are made similarly but with the additional selection of ON or OFF In order to minimize the risk of error during a dive it is highly recommended that the mixes are set in the proper order This means that as the mix number rises so does oxygen content and this is the order they are usually used during the dive Before a dive only set to ON the mixes you actually have available and remember to check the set values to make sure they are correct The default oxygen percentage 05 setting is 21 air and oxygen partial pressure PO setting 1 4 bar After entering values for MIX1 you can enable disable and set an additional gas mix MIX2 SUUNTO SUUNTO SUUNTO ADJ UST WTH ADJ UST WTH UP AND DOWN one UP AND DOWN BUTTONS p mmn o BUTTONS ACCEPT WTH A iia ACCEPT WITH SELECT BUTTON 19 SELECT BUTTON NOTE If MIX2 is set ON settings for all mixes are stored until changed If MIX2 has an oxygen content of 22 or greater settings for all mixes are stored until changed 5 8 4 Setting the personal altitude adjustments The current Altitude and Personal Adjustment settings are displayed in the startup screen when entering the DIVE mode If the mode does not match the altitude or personal conditions see Section 5 9 4 Diving at altitude and Section 5 9 5 Personal adjustments it is imperative that you enter the correct selection before diving Use Altit
55. ives 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 number if another dive is made 7 3 Repetitive dive planning The Suunto Cobra3 includes a dive planner that allows you to review the no decompression limits on a subsequent dive taking the residual nitrogen loading of previous dives into consideration The Dive Planning mode is explained in Section 7 5 1 Dive Planning mode PLANnodec 35 7 4 Flying after diving In DIVE mode the no fly time is shown in the center window next to the airplane image In TIME mode the airplane image is shown in the top left corner Flying or traveling to a higher altitude should be avoided at any time when the computer is counting down the no fly time The no fly time is always at least 12 hours or equivalent to the so called desaturation time if longer than 12 hours For desaturation times lower than 70 minutes no no fly time is given In the Permanent Error mode and GAUGE mode the no fly time is 48 hours The Divers Alert Network DAN recommends the following on no fly times e A minimum surface interval of 12 hours would be required in order to be reasonably assured a diver will remain symptom free upon ascent to altitude in a commercial jet
56. iving in GAUGE mode DIVEgauge c cece cence eee nets eee eeeeneees 33 CAPT BIR DIMING 3 actos toe A oranda eum 35 TA 9utfacelterVal a Sn A TA Fa ona amas Coen on qs 35 zos DIVE MUNDO ada 35 75 9 Repetitive dive plannihg si A EA EE EAD EIAS 35 E AA dsl Se 36 MO PEANWTIOOG Nit 36 7 5 1 Dive Planning mode PLANnodec ssesssessss ee 36 7 5 2 Simulation Mode PLANSimulator sess 37 7 6 MEMORY mode 5 2 sica et ara RA RERRRRDRESERERIRARARARGRRARRRREERA TARRRURE elas 38 7 6 1 Dive logbook MEMLogbook ccc cece cece eee e eee eee eeeeeeeanneees 38 7 6 2 Dive history MEMHistory 0cc cece cece eee e ee ee cnn rr 39 7 7 Suunto Dive Manager SDM cc cece cece cece eee II 40 7 8 www suuntosports com and Suunto Diving World at WWW SUUINIO COM GIVING cu A a amen itu do ca A oH 40 8 CARE AND MAINTENANCE OF MY SUUNTO DIVING COMPUTER 42 S BATTERY REPLACEMENT vec citata pM ab DEDERE isa 44 Ole BOUCIy mp TC 44 AO O o A OE 44 9 3 Replacing the battery v a oz assa sek iu roo dee xe cn daa caida 44 TO TECHNICAL DATA i rerutteus acetic etu tud e meets suce teh EM EE 46 10 1 Technical Specifications us Fo o CA E Slane Fu oe 46 T02 ROBM MuR I 47 10 2 1 Suunto RGBM adaptive decompression sseuuuuusue 47 10 2 2 No decompression IIMS ur Sencar ES RE RRERE RA 48 10 23 Altitude CIV WG eratis tret Sedet Pus sd 49 1
57. ized Suunto distributors and retailers Original Suunto accessories are tested to be compatible with Suunto products and can be used safely NOTE Damage caused by non original accessories will not be covered by warranty HOW TO GET MORE INFORMATION You can find service amp warranty information in these pages by searching the FAQs If you do not find the answer in the FAQs you can also send a support request To be able to send a support request you have to register in the system REGISTER NOW You can also contact our European help desk by telephone at 358 2 284 1160 The cost of the call is that of a normal call to Finland The call center is open Mon Fri 24h day The service is provided in English all the time Other languages French German Swedish Japanese Spanish and Finnish are only provided during local business hours Call center professionals can answer customer questions regarding diving products outdoor products and compasses HOW DO KNOW IF MY SUUNTO PRODUCT IS COVERED BY WARRANTY You can check the proof pf purchase which has to be 2 years or less You can also check the serial number of your unit Does repairing my Suunto product extend the warranty As far as the national laws permit repairing the product does not extend or otherwise affect the warranty period However part s repaired or replacement product s provided during the warranty period will be warranted for the remainder of the original warranty p
58. liner altitude up to 2 400 m 8 000 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 a 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 2 400 m 8 000 ft The only two exceptions to this recommendation are e Ifa diver has less than 2 hours total accumulated dive time in the last 48 hours a 12 hour surface interval before flying is recommended e Following any dive that required a decompression stop flying should be delayed for at least 24 hours and if possible for 48 hours e Suunto recommends that flying is avoided until all the DAN and UHMS guidelines as well as the dive computer s no fly conditions are satisfied 7 5 PLAN mode The PLAN mode includes a dive planner PLANnodec and simulation mode PLANsimulator SUUNTO 7 5 1 Dive Planning mode PLANnodec The Dive Planning mode displays no decompression times for a new dive taking into account the effects of previous dives When entering the PLANnodec mode the display first briefly shows the remaining desaturation time before going into plan mode By pressing the UP DOWN buttons you can scroll the no decompression limits in
59. lly considered in recreational diving In order to manage this risk the dive computer tracks the time and intensity of the oxygen exposure and provides the diver with information to adjust the dive plan in order to maintain oxygen exposure within reasonably safe limits In addition to the physiological effects of enriched air on the body there are operational considerations to be addressed when handling altered breathing mixes Elevated concentrations of oxygen present a fire or explosion hazard Consult the manufacturer of your equipment to check its compatibility with nitrox 5 5 Audible and visual alarms The dive computer has audible and visual alarms that advise when important limits are approached or that prompt you to acknowledge preset alarms The table below describes the different alarms and their meanings Table 5 1 Audible and visual alarm types Short single beep Dive computer is activated Dive computer automatically returns to the TIME mode Three beeps with a three Cylinder pressure reaches 50 bar 725 psi The cylinder second interval pressure display will start to blink Cylinder pressure reaches the selected alarm pressure Calculated remaining air time reaches zero Three beeps with a three No decompression dive turns into a decompression stop second interval and activated dive An arrow pointing upwards and the blinking ascent backlight warning ASC TIME will appear Continuous beeps and Maximum allowed ascent r
60. mple rate Tones Deepstops RGBM Units Tank Pressure Alarm Tank Pressure 3 2 Button symbols and functions The table below explains the main functions of the dive computer s buttons The buttons and their use are explained in more detail in the relevant sections of the manual Table 3 1 Button symbols and functions MODE Short Switch between main modes Switch from submode to main mode Activate backlight in DIVE mode MODE Activate backlight in other modes SELECT Short Select a submode Select and accept settings SELECT Activate compass in TIME and DIVE modes UP Short Toggle between alternative displays Change submode Increase values DOWN Short Toggle between alternative displays Change submode Decrease values DOWN Long Enter Setting mode Toggle between ceiling and remaining air time display 10 4 GETTING STARTED WITH YOUR SUUNTO COBRA3 To get the most out of your Suunto Cobra3 take some time to personalize it and really make it YOUR computer Set the correct time and date as well as the alarms and tones unit and backlight settings Then calibrate and test the compass function Suunto Cobra3 is a very user friendly dive computer and you will quickly become familiar with its functions Make absolutely sure that you know your computer and have it set up as you want it BEFORE getting into the water 4 1 TIME mode settings The first thing you ll want to do with your Suunto Cobra3 is to modify t
61. n 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 Below is an example of a decompression dive at the ceiling zone SUUNTO TWOARROWS POINT AT EACH OTHER HOUR GLASS YOU ARE IN THE OPTIMUM CEILING ZONE AT 3 M AND YOUR MINIMUM ASCENT TIME IS 15 MNUTES 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 have been completed You are advised however to stay until the STOP sign has also disappeared 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 SUUNTO DECOMPRESSION DIVE ABOVE CEILING NOTE DOWNWARD POINTING ARROW ER WARNING ANDALARM YOU SHOULD IMMEDIATLY WITHIN 3 MINUTES DES CEND TO OR BELOW CEILING In addition an Error 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 will go into a pe
62. n and time out when in COMPASS mode SUUNTO SUUNTO SUUNTO SUUNTO SUUNTO Compass settings Calibration Because of changes in the surrounding magnetic field the Suunto Cobra3 electronic compass occasionally needs to be re calibrated During the calibration process the compass adjusts itself to the surrounding magnetic field and to tilting As a basic rule you should calibrate the compass whenever it doesn t seem to operate properly or after replacing the dive computer s battery First the compass is level calibrated and after a successful level calibration the compass is tilt calibrated The tilt calibration compensates for tilting the compass in any direction in angles of up to 45 Strong electromagnetic fields such as power lines stereo speakers and magnets can affect the compass calibration It is therefore advisable to calibrate the compass if your Suunto Cobra3 has been exposed to these fields NOTE When traveling overseas it is recommended that you recalibrate the compass at the new location before using it NOTE Remember to hold the Suunto Cobra3 level during the level calibration process A deviation of 5 is allowed in any direction from the horizontal plane during level calibration To calibrate the compass 14 SUUNTO SUUNTO SUUNTO A og 4 Y o M y HOLD THE 5 AND SLOWLY ROTATE 360 SUUNTO HOLD THE DEVICE STILL AND SLOWLY TILT 90 VERTICALLY If the calibration fa
63. nal altitude adjustments describes how the Altitude value is set 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 23 5 9 5 Personal adjustments There are personal factors that can affect your susceptibility to DCI which you can predict in advance and input into the decompression model Such factors vary between divers and also for the same diver from one day to another The three step Personal Adjustment setting is available if a more conservative dive plan is desired and for very experienced divers a two step adjustment for RGBM effect on repetitive dives is available 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 below average physical fitness level e fatigue e dehydration e previous history of DCI e stress obesity e patent foramen ovale PFO exercise on or after dive This feature is used to adjust the computer to be more conservative according to personal preference by entering the suitable Personal Adjustment setting with the help of Table 5 5 Personal Adjustment settings In ideal conditions retain the default setting PO If conditions are more difficult or any of the factors which tend to increase the possibility of
64. or b replacing the Product or the parts or c refunding the purchase price of the Product subject to the terms and conditions of this Limited Warranty Your mandatory legal rights under your applicable national laws relating to the sale of consumer products are not affected by this Limited Warranty This Limited Warranty is only valid and enforceable in the country in which you purchased the Product provided that Suunto has intended the Product for sale in that country If however you purchased the Product in a member state of the European Union Iceland Norway Switzerland or Turkey and Suunto originally intended the Product for sale in one of these countries this Limited Warranty is valid and enforceable in all of these countries The warranty service may be limited due to the possible country specific elements in the Products In countries outside the European Union Iceland Norway Switzerland or Turkey subject to your agreement to pay a service fee and compensation for the possible shipment costs incurred by Suunto or a Suunto Authorized Service Centre you can have warranty service other than in the country in which you purchased the Product Any spare parts will be provided free of charge in this case Warranty Period The Warranty Period starts at the date of retail purchase by the original end user purchaser The Product may consist of several different parts and the different parts may be covered by a different warranty period her
65. r 44 9 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 10 Check that the battery compartment battery holder and lid are clean Clean with soft cloth if necessary 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 position on the battery compartment lid 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 while making 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 16 The dive computer should now active its timekeeping mode and show time 18 00 6 00 PM and date SA 01 01 Activate the instrument Check that e all display segments work the low battery warning is off e the buzzer beeps and backlight works e all the settings are correct Reset if necessary 17 Reassemble computer into the console The instrument is now ready for use CAUTION Check after the first dives for possible moisture under the transparent battery compartment li
66. repetitive dive planning also help to maximize diver safety Table 7 1 Alarms A o o Diver Attention Symbol Extend Surface Interval Ee 0 Violated Decompression Ceiling 7 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 SUUNTO IT IS 15 MINUTES SINCE YOU SURFACED FROMA6 MINUTE DIVE THE PRESENT DEPTHIS 0 0 M THE AIRPLANE SYMBOL AND NO FLY VALUE INDICATE THAT YOU SHOULD NOT FLY FOR 20 HOURS Or in the alternative displays the following information will be shown e maximum depth of last dive in meters feet e dive time of last dive in minutes shown as DIVE TIME e the current time shown as TIME e the current temperature in C F e tank pressure If set to NITROX mode the following information will also be shown e the oxygen percentage labeled O e the oxygen partial pressure labeled PO e the current oxygen toxicity exposure labeled OLF 7 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 fly 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 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 d
67. rmanent 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 Section 5 6 Error conditions 31 6 2 Diving in NITROX mode DIVEnitrox NITROX mode DIVEnitrox is the second dive mode available in Suunto Cobra3 and is used when using oxygen enriched gas mixtures 6 2 1 Before diving in NITROX mode If set to the 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 accordingly The dive computer will not accept fractional percentage values of oxygen concentration Do not round up fractional percentages For example 31 8 oxygen should be entered as 31 Rounding up will cause nitrogen percentages to be understated and will affect decompression calculations If you want 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 0 and PO values Calculations based on nitrox use result in longer no decompression times and shallower maximum depths than diving with air As a safety precaution the oxygen calculations in the computer are made with an oxygen percentage of 1 set O When the dive computer is set in
68. sible pressure gauge timer or watch and have access to decompression tables whenever diving with the dive computer PERFORM PRE CHECKS 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 personal Safety Deep Stop and RGBM adjustments are correct YOU ARE ADVISED TO AVOID FLYING ANY TIME THE COMPUTER COUNTS DOWN THE NO FLY TIME ALWAYS ACTIVATE THE COMPUTER TO CHECK THE REMAINING NO FLY TIME PRIOR TO FLYING Flying or traveling to a higher altitude within the no fly time can greatly increase the risk of DCI Review the recommendations given by Divers Alert Network DAN in Section 7 4 Flying after diving 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 DO NOT DIVE WITH A CYLINDER OF ENRICHED AIR IF YOU HAVE NOT PERSONALLY VERIFIED ITS CONTENTS A
69. ssion stop dive the zone between the ceiling and the ceiling plus 1 8 m 6 ft This depth range is displayed with two arrows pointing toward each other the hour glass icon Toxicity caused by oxygen Can cause a variety of neurological symptoms The most important of which is an epileptic like convulsion which can cause a diver to drown Abbreviation for central nervous system toxicity Central nervous system toxicity limit fraction Also note Oxygen Limit Fraction See Tissue group Abbreviation for Divers Alert Network Abbreviation for decompression illness Time spent at a decompression stop or range before surfacing to allow absorbed nitrogen to escape naturally from tissues On a decompression stop dive the depth range between the floor and the 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 the bends or DCI 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 Delta P describing the Cylinder Pressure drop during the dive the difference in cylinder pressure between the beginning an
70. surface In such cases it is 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 NEVER ASCEND ABOVE 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 Display below the floor The blinking ASC TIME and an upward pointing arrow indicate that you are below the floor You should start your ascent immediately The ceiling depth is shown on the left side and the minimum total ascent time on the right side of the center window Below is an example of a decompression dive without Deep Stops below the floor 30 SUUNTO UPWARD POINTING ARROW BLINKING ASC TIME ANDAN ALARM TELL YOU TOASCEND MINIMUM TOTALASCENT TIME INCLUDING MANDATORY SAFETY STOP IS 15 MINUTES CEILING IS AT 3 M Display above the floor When you ascend above the floor the ASC TIME display stops blinking and the upward pointing arrow disappears Below is an example of a decompression dive above the floor SUUNTO UPWARD POINTING ARROW HAS DISAPPEAREDANDASC TIME LABEL HAS STOPPED BLINKING MEANING YOU ARE IN THE DECOMPRESSION RANGE Decompression will now begi
71. t and data stored in your Product because content and data may be lost during repair or replacement of the Product Suunto or a Suunto Authorized Service Centre is not responsible for any damage or loss of any kind whatsoever resulting from loss of damage to or corruption of content or data during repair or replacement of the Product When the Product or a partis replaced any replaced item becomes the property of Suunto If a refund is given the Product for which the refund is given must be returned to a Suunto Authorized Service Centre as it becomes the property of Suunto and or Suunto Authorized Service Centre When repairing or replacing the Product Suunto or a Suunto Authorized Service Centre may use products or parts that are new equivalent to new or re conditioned 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 OR PROFITS LOSS OF SAVINGS OR REVENUE LOSS OF DATA PUNITIVE DAMAGES LOSS OF USE OF THE PRODUCT OR ANY ASSOCIATED EQUIPMENT COST OF CAPITAL COST OF ANY SUBSTITUTE EQUIPMENT OR FACILITIES DOWNTIME THE CLAIMS OF ANY THIRD PARTIES INCLUDING CUSTOMERS AND INJURY TO PROPERTY 53 RESULTING FROM THE PURCHASE OR USE OF THE PRODUCT OR
72. the following information will be shown before and during a dive when the computer is set in NITROX mode the selected O2 on the alternative display e OLF alternative display for either CNS or OTU whichever is larger e audible alarms are given and the OLF value starts to blink when the 80 and 100 limits are exceeded e audible alarms are given and the actual PO value blinks when it exceeds the preset limit e indive planning the maximum depth according to the O2 and maximum PO selected 49 11 INTELLECTUAL PROPERTY 11 1 Copyright This user s manual is copyrighted and all rights are reserved It may not in whole or in part be copied photocopied reproduced or translated to any media without prior written consent from Suunto 11 2 Trademark Suunto Cobra3 Consumed Bottom Time CBT Oxygen Limit Fraction OLF Suunto Reduced Gradient Bubble Model RGBM and Continuous Decompression and their logos are all registered or unregistered trademarks of Suunto All rights are reserved 11 3 Patent notice This product is protected by the following patents and patent applications US 5 845 235 and US11 152 075 Other patents have been applied for 50 12 DISCLAIMERS 12 1 User s responsibility This instrument is intended for recreational use only Suunto Cobra3 must not be used for obtaining measurements that require professional or industrial precision 12 2 CE The CE mark is used to mark conformity with th
73. tion 28 Low Air Pressure Warnings The dive computer will warn you with three audible double beeps and a blinking pressure display when the cylinder pressure reaches 50 bar 725 psi Three double beeps are also heard when the cylinder pressure goes down to the user selected alarm pressure and when the remaining air time reaches zero 6 1 4 Ascent rate indicator The ascent rate is shown graphically along the right hand side When the maximum allowed ascent rate is exceeded the lower segments start to blink with the top segment staying solid indicating that the maximum ascent rate has been exceeded continuously or that the current ascent rate is significantly above the allowed rate SUUNTO A ACTIVATED BACKLIGHT ALARMANDA BUNKING ASCENT RATE BAR GRAPH INDICATE YOU ARE ASCENDING FASTER THAN 10 MMIN YOU ARE ADVISED TO MAKE A MANDATORY SAFETY STOP WHEN YOU REACHA DEPTH OF 6 M 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 Continuous ascent rate violations will result in Mandatory Safety Stops When Recommended Deep Stop is enabled the length is indicated in seconds 6 1 5 Safety Stops A 3 minute Recommended Safety Stop is prompted after every dive to ov
74. tting will result in erroneous dive and planning data This device contains a Lithium cell battery To reduce the risk of fire or burns do not disassemble crush puncture short external contacts or dispose of in fire or water Replace only with manufacturer specified batteries Recycle or dispose of used batteries properly It is not possible to change between AIR NITROX and GAUGE modes before the instrument has counted down the no fly time There are however exceptions to this You can change from AIR to NITROX mode as well as from AIR or NITROX mode to GAUGE mode even during the no fly 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 In GAUGE mode the no fly time is always 48 hours 3 SUUNTO AT A GLANCE 3 1 Navigating in the menus Suunto Cobra3 has four main operating modes TIME mode TIME DIVE mode DIVE PLAN mode PLAN and MEMORY mode MEMORY as well as the COMPASS submode which can be activated from either TIME or DIVE modes To toggle between the main modes press the MODE button To select a submode in DIVE PLAN and MEMORY modes press the UP DOWN buttons COMPASS SUUNTO SETTINGS LT Calibrate Declination TIME Time out DIVE MEMORY Ne S LIGHT SETTINGS T d b SUB MODES Depth Alarm Air Log Dive Time Alarm EAN Plan Nitrox Gauge His Units Personal Altitude Off Backlight Sa
75. ty Stops are widely considered good diving practice for recreational diving and are an integral part of most dive tables The reasons for performing a Safety Stop include reducing sub clinical DCI microbubble reduction ascent control and orientation before surfacing The Suunto Cobra3 displays two different types of Safety Stops Recommended Safety Stop and Mandatory Safety Stop 5 10 1 Recommended Safety Stops With every dive over 10 meters there is a three minute countdown for the Recommended Safety Stop to be taken in the 6 3 m 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 SUUNTO 199 3 WHEN STOP IS DISPLAYED MAKE ARECOMMENDED SAFETY STOP FOR 3 MINUTES me ros NOTE 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 5 10 2 Mandatory Safety Stops When the ascent rate exceeds 10 m 33 ft per minute continuously for more than 5 seconds the microbubble build up is predicted to be more than is 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 depends on the severity of the ascent rate excess The STOP sign appears in the display and when you reach the depth zone between 6 m and 3 m 20 ft an
76. ude Adjustment to select the correct altitude and use Personal Adjustment to add an extra level of conservatism SUUNTO SUUNTO m O A f sona m ADJ UST WITH UP AND MOS Altitude D DONNE SEE WITH SELECT BUTTON 20 5 8 5 Setting the sample rate The sample rate controls how often the depth time tank pressure and water temperature is stored in the memory You can set the dive profile sample rate to 1 10 20 30 or 60 seconds The factory default setting is 20 seconds SUUNTO SUUNTO AD UST WTH UP AND DOWN BUTTONS ACCEPT WITH SELECT BUTTON 5 8 6 Setting the Safety Stops Deep Stops The Deep Stop setting allows you to view Deep Stops If Deep Stops are set to OFF only the traditional Safety Stop calculation is used If set to ON iterative Deep Stops will be prompted as well The length of the individual Deep Stops can be set to 1 or 2 minutes SUUNTO SUUNTO y Ceepstop y ADJ UST WTH UP AND on DOWN BUTTONS ACCEPT WITH SELECT BUTTON 5 8 7 Setting the RGBM values For certain divers and diving conditions it may be desirable to set the attenuated RGBM mode The selection is displayed during the DIVE mode startup The options are full RGBM effects 100 and attenuated RGBM 50 SUUNTO SUUNTO AD UST WITH UP AND DOWN BUTTONS ACCEPT WTH SELECT BUTTON 5 8 8 Setting the units Use Unit Settings to choose between metric meters celsius bar and imperial feet fa
77. uuntoSports com members Here you can create and manage your own communities and search for others All communities have a home page that lists the latest group activities Community members can also use group specific bulletin boards and calendars create their own link lists and group activities All registered SuuntoSports com users automatically become members of the World of Suunto Sports community The Sport forums include sport specific news bulletin boards event calendars ranking lists and discussions You can also exchange experiences and read travel reports written by other members 40 To learn more about SuuntoSports com s functions and activities visit the site try them and if necessary use the site Help The Help is available on the right side of the bar that divides the screen 41 8 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 42 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
78. ve computer cannot withstand the impact of heavy objects like scuba cylinders 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 e Store your dive computer in a dry place when you are not using it e 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 e 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 particles have been flushed out Check the display and the transparent battery compartment cover for possible moisture or water DO NOT use the dive computer if you detect any moisture or water inside In order to limit corrosion damage remove the battery and moisture from the battery compartment Contact an authorized Suunto dealer for battery replacement or other service CAUTION e Do not use compressed air to blow water off the unit e Do not use solvents or other cleaning fluids that might cause damage Donottest or use the dive computer in pressurized
79. ve situation To get the most from the RGBM safety benefits refer to Section 10 2 RGBM 5 2 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 follow these steps 1 Assess the situation calmly and then move promptly to less than 18 m 60 ft 2 At 18 m 60 ft slow down your ascent rate to 10 m 33 ft per minute and move to a depth between 3 and 6 m 10 and 20 ft 3 Stay there for as long as your air supply will safely allow After reaching the surface do not dive for at least 24 hours 5 3 Dive computer limitations While the dive computer s calculations are based on current decompression research and technology it is important to 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 16 5 4 Nitrox Diving with nitrox provides you with an opportunity to increase bottom times or reduce the risk of decompression illness by reducing the nitrogen content in the gas mix However when the gas mix is altered the oxygen content of the mix is generally increased This increase exposes the diver to an oxygen toxicity risk not usua

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