Suunto Cobra3 None User Manual
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Suunto Cobra3 None User Manual

Suunto cobra3 user's guide
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COBRA3
USER'S GUIDE

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  • Page 1 COBRA3 USER’S GUIDE...
  • Page 2 Time Tank pressure...

  • Page 3: Table Of Contents

    1. WELCOME TO THE WORLD OF SUUNTO DIVING INSTRUMENTS ... 5 2. WARNINGS, CAUTIONS, AND NOTES ... 6 3. SUUNTO AT A GLANCE ... 9 3.1. Navigating in the menus ... 9 3.2. Button symbols and functions ... 9 4. GETTING STARTED WITH YOUR SUUNTO Cobra3 ... 11 4.1.
  • Page 4 7.7. Suunto Dive Manager (SDM) ... 40 7.8. www.suuntosports.com and Suunto Diving World at www.suunto.com/diving ... 40 8. CARE AND MAINTENANCE OF MY SUUNTO DIVING COMPUTER ... 42 9. BATTERY REPLACEMENT ... 44 9.1. Battery kit ... 44 9.2. Required tools ... 44 9.3.

  • Page 5: Welcome To The World Of Suunto Diving Instruments

    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.

  • Page 6: Warnings, Cautions, And Notes

    (DCI). Therefore, Suunto strongly recommends that the device is not used for any commercial or professional diving activities. ONLY DIVERS TRAINED IN THE PROPER USE OF SCUBA DIVING...
  • Page 7 DIVES THAT REQUIRE DECOMPRESSION STOPS ARE NOT WARNING RECOMMENDED. 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 WARNING instrumentation, including a depth gauge, submersible pressure gauge, timer or watch, and have access to decompression tables whenever...
  • Page 8 SELECT THE CORRECT ALTITUDE ADJUSTMENT SETTING! When WARNING 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.

  • Page 9: Suunto At A Glance

    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.
  • Page 10 Symbol Button Press Long DOWN Short DOWN Long Main functions Enable gas switching in NITROX mode Toggle between alternative displays Change submode Decrease values Enter Setting mode Toggle between ceiling and remaining air time display...

  • Page 11: Getting Started With Your Suunto Cobra3

    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.

  • Page 12: Setting The Units

    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. 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).

  • Page 13: Learning How To Use Your Compass

    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.

  • Page 14: Compass Settings

    COMPASS mode: 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...
  • Page 15 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.

  • Page 16: Before Diving

    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.

  • Page 17: Nitrox

    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 usually considered in recreational diving.

  • Page 18: Error Conditions

    Alarm type Continuous beep series for 24 seconds or until any button is pressed. Current time blinks for one minute Table 5.3. Oxygen alarms in NITROX mode Alarm type Continuous beeps for 3 minutes and activated backlight When the backlight is turned OFF, it does not illuminate when an NOTE alarm is activated.

  • Page 19: Connecting Suunto Cobra3 To A Regulator

    Remove the high pressure (HP) port plug on the first stage of your regulator using an appropriate tool. 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! Attach the regulator to the scuba cylinder and slowly open the valve.

  • Page 20: Setting The Nitrox Values

    With a range of 1 - 999 minutes, the alarm can be set to your planned NOTE 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.

  • Page 21: Setting The Sample Rate

    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.

  • Page 22: Activation And Pre-Checks

    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.

  • Page 23: Battery Power Indication

    the correct oxygen percentages are adjusted according to the measured oxygen • percentages in your cylinders 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).

  • Page 24: Personal Adjustments

    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 100%, which gives full RGBM effect. Suunto strongly advises you to use full RGBM effect. Statistically, very experienced divers have less incidents with DCI.

  • Page 25: Safety Stops

    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.

  • Page 26: 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, placing 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.

  • Page 27: Diving

    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.

  • Page 28: Bookmark

    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).

  • Page 29: Ascent Rate Indicator

    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.
  • Page 30 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.
  • Page 31 TIME AND AN ALARM TELL YOU TO ASCEND. MINIMUM TOTAL ASCENT 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.

  • Page 32: Diving In Nitrox Mode (Divenitrox)

    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% O this setting until the O % is adjusted to any other percentage of oxygen (22% - 99%).

  • Page 33: Oxygen Limit Fraction (Olf)

    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: Mix number, O...
  • Page 34 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.

  • Page 35: After Diving

    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.

  • Page 36: Flying After Diving

    • for at least 24 hours, and if possible, for 48 hours • 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).

  • Page 37: Simulation Mode (Plansimulator)

    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 DISPLAYED AS “–”. The Planning mode takes into account the following information from previous dives: any calculated residual nitrogen •...

  • Page 38: Memory Mode

    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...

  • Page 39: Dive History (Memhistory)

    Page I, main display maximum depth • date of dive • type of dive (AIR, NITROX, GAUGE) • dive start time • • dive number oxygen percentage for Mix1 • total dive time (in minutes in all modes) • Page II maximum depth •...

  • Page 40: Suunto Dive Manager (Sdm)

    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.
  • Page 41 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.

  • Page 42: Care And Maintenance Of My Suunto Diving Computer

    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.
  • Page 43 Original Suunto accessories are only distributed through Suunto`s worldwide network of authorized Suunto distributors and retailers. Original Suunto accessories are tested to be compatible with Suunto products and can be used safely. Damage caused by non-original accessories will not be covered by NOTE warranty.

  • Page 44: Battery Replacement

    Check for any traces of flooding, particularly between the beeper and the lid, or for any other damage. In case of a leak or any other damage, bring the dive computer to an authorized SUUNTO dealer or distributor for check and repair. , MIX2 OFF).
  • Page 45 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.

  • Page 46: Technical Data

    It is recommended that the instrument be stored in a dry place at room temperature. Do not leave the dive computer in direct sunlight! NOTE Tissue calculation model: • Suunto Deep Stop RGBM algorithm (developed by Suunto and Bruce R. Wienke, BSc, MSc, PhD) • 9 tissue compartments •...

  • Page 47: Rgbm

    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.

  • Page 48: No-Decompression Limits

    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.

  • Page 49: Altitude Diving

    No-decompression time limits (mins) for various depths (ft) Depth (ft) P0/A0 P0/A1 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 additional nitrogen in your body, compared to the equilibrium situation at the original altitude.

  • Page 50: Intellectual Property

    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...

  • Page 51: Disclaimers

    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 the European Union EMC directive 89/336/EEC FIOH, Topeliuksenkatu 41 a A, FI-00250 Helsinki, Finland, notified body no.0430, has EC...

  • Page 52: Suunto Limited Warranty For Suunto Diving Computers And Suunto Diving Computer Accessories

    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.
  • Page 53 When the Product or a part is 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.
  • Page 54 RESULTING FROM THE PURCHASE OR USE OF THE PRODUCT OR 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.

  • Page 55: Disposal Of The Device

    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.

  • Page 56: Glossary

    GLOSSARY Air time Altitude dive Ascent rate ASC RATE Ascent time ASC TIME Ceiling Ceiling zone Central nervous system toxicity CNS% Compartment Decompression Decompression range Decompression illness Dive series Dive time ΔP Enriched air nitrox Equivalent air depth Floor Half time The amount of dive time remaining, based on a calculation of cylinder pressure and ambient pressure and present air consumption.
  • Page 57 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.
  • Page 58 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 in this documentation is both comprehensive and accurate, no warranty of accuracy is expressed or implied.
  • Page 60 © Suunto Oy 9/2008, 10/2008, 11/2008...

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