Suunto Cobra2, User Manual

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Page 3: ...and visual alarms 17 5 6 Error conditions 18 5 7 Air integration 18 5 7 1 Connecting Suunto Cobra2 to a regulator 19 5 8 DIVE mode settings 19 5 8 1 Setting the depth alarm 19 5 8 2 Setting the dive...

Page 4: ...m and Suunto Diving World at www suunto com diving 39 8 CARE AND MAINTENANCE 40 8 1 Water contacts and buttons 40 8 2 Care of your dive computer 40 8 3 Maintenance 40 8 4 Water resistance inspection 4...

Page 5: ...gas switching Suunto Cobra2 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...

Page 6: ...r 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 stro...

Page 7: ...HE 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 repetiti...

Page 8: ...ion to make the calculations more conservative Failure to select the correct Personal Adjustment setting will result in erroneous dive and planning data WARNING This device contains a Lithium cell bat...

Page 9: ...bols and functions The table below explains the main functions of the dive computer s buttons The buttons and their use will be explained in more detail in the relevant sections of the manual Table 3...

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

Page 11: ...display is illuminated by holding down the MODE button for more than 2 seconds Now that you know how to toggle between the shortcuts you can start to set them The following figure shows how to enter...

Page 12: ...r 60 seconds When the backlight is turned off it does not illuminate when an alarm sounds ADJUST WITH UP AND DOWN BUTTONS ACCEPT WITH SELECT BUTTON 4 1 6 Setting the tones The TONE SETTING mode allows...

Page 13: ...H AND TIME OR MAXIMUM DEPTH AS WELL AS BEARING OR DIVE TIME OR TEMPERATURE ARE DISPLAYED NOTE When accessed from DIVE mode toggle between the alternative displays by pressing the UP DOWN buttons NOTE...

Page 14: ...the center of the compass display Table 4 1 Locked bearing symbols Explanation Symbol You are traveling towards the locked bearing You are 90 or 270 degrees from the locked bearing You are 180 degree...

Page 15: ...is therefore advisable to calibrate the compass if your Suunto Cobra2 has been exposed to these fields NOTE When traveling overseas it is recommended that you recalibrate the compass at the new locat...

Page 16: ...its ability to adapt to a variety of situations and dive profiles The Suunto Cobra2 uses traditional recommended safety stops as well as deep stops YOU ARE ADVISED TO MAKE A DEEPSTOP AT 18 M THE SECON...

Page 17: ...Dive computer is activated Short single beep Dive computer automatically returns to the TIME mode Cylinder pressure reaches 50 bar 725 psi The cylinder pressure display will start to blink Three beeps...

Page 18: ...e 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 ins...

Page 19: ...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 sub mode chosen AIR...

Page 20: ...ly 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 O2 setting is 21 air and oxygen partial pressure PO2...

Page 21: ...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...

Page 22: ...ure and depth 0 0 m 0 ft the alarm beeps And if set to NITROX mode make sure that the correct number of mixes is set and that the oxygen percentages are adjusted according to the measured nitrox blend...

Page 23: ...t 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...

Page 24: ...ffect Desired Tables RGBM setting Full RGBM effects Standard Suunto RGBM model Default 100 Smaller RGBM effects higher risk Attenuated RGBM model 50 5 10 Safety Stops Safety Stops are widely considere...

Page 25: ...rd 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 di...

Page 26: ...owever it is recommended that you activate the DIVE Mode manually in order to perform the necessary dive pre checks 6 1 1 Basic dive data During a No decompression dive the following information is di...

Page 27: ...ll 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 con...

Page 28: ...datory 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...

Page 29: ...ortant to remember that the decompression will be very slow at or close to the floor The depth of the ceiling and floor will depend on your dive profile The ceiling depth will be fairly shallow when y...

Page 30: ...E 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 decompr...

Page 31: ...set O2 When the dive computer is set in NITROX mode the Dive Planning mode calculates using the O2 and PO2 values that are currently in the computer To set the nitrox mixes refer to Section 5 8 3 Sett...

Page 32: ...exposure 6 2 4 Gas change and multiple breathing gas mixes The Suunto Cobra2 allows gas changes to enabled gas mixes during the dive Gas changes are made by following the procedure below CHANGING GAS...

Page 33: ...e dive and used as a stopwatch by pressing the SELECT button BY PRESSING THE SELECT BUTTON DURING A DIVE A BOOKMARK IS WRITTEN IN THE PROFILE MEMORY THE DIVE TIMER IS RESET AND THE PREVIOUSLY TIMED IN...

Page 34: ...pressure labeled PO2 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 ha...

Page 35: ...uggests 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...

Page 36: ...ctions 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 inst...

Page 37: ...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 Cobra2 has a very sophisticated hig...

Page 38: ...display 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...

Page 39: ...ternet 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 co...

Page 40: ...it replaced immediately by your Suunto representative Check the strap and the buckle for flaws If needed have them replaced by your Suunto representative Wash and rinse the unit in fresh water after...

Page 41: ...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...

Page 42: ...lems 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...

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Page 44: ...ording interval 20 seconds adjustable 1 10 20 30 60s Memory capacity approximately 42 hours of diving with 20 second recording interval Depth accuracy 0 3 m 1 ft Operating conditions Normal altitude r...

Page 45: ...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 var...

Page 46: ...us depths m No decompression time limits mins for various depths m for the first dive of a series Personal Mode Altitude Mode Depth m P2 A2 P2 A1 P2 A0 P1 A2 P1 A1 P1 A0 P0 A2 P0 A1 P0 A0 75 45 29 96...

Page 47: ...ed 9 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 conserva...

Page 48: ...from Suunto 10 2 Trademark Suunto Cobra2 Consumed Bottom Time CBT Oxygen Limit Fraction OLF Suunto Reduced Gradient Bubble Model RGBM and Continuous Decompression and their logos are all registered o...

Page 49: ...s designed to comply with this standard 11 3 Limits of liability and ISO 9001 compliance Suunto Oy does not assume any responsibility for losses or claims by third parties which may arise through the...

Page 50: ...m the date of purchase and in scope to the warranties expressed herein Suunto shall not be liable for loss of use of the product or other incidental or consequential costs expenses or damage incurred...

Page 51: ...AL 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 represen...

Page 52: ...ape naturally from tissues Decompression range 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 Decompression i...

Page 53: ...21 oxygen Oxygen partial pressure 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...

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Page 55: ...ties 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 o...

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