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Suunto COBRA3 User Manual
Summary of COBRA3
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En user’s guide cobra3.
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Tank pressure time.
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1. Welcome to the world of suunto diving instruments . . . . . . . . . . . . . . . . 5 2. Warnings, cautions, and notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3. Suunto at a glance . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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6.1.5. Safety stops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 6.1.6. Decompression dives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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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...
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2. Warnings, cautions, and notes throughout this manual, important safety icons are displayed. Three classifications are used to separate these icons by their order of importance: warning is used in connection with a procedure or situation that could result in serious injury or death caution is used...
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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. Warning use back-up instruments! Make sur...
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Warning 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...
Page 9: 3. 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, p...
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Main functions press 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 display long down 10
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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 ...
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Adjust with up and down buttons. Accept with 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. Adjust with up and down buttons. Accept with select button. 4.1.5. ...
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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 ...
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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 degrees from the locked bearing you are 120 (or 240) degrees from the locked bearing 4.3.3. Compass settings you can define the compass se...
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Hold the device level and slowly rotate 360°. Hold the device still and slowly tilt 90° vertically. If the calibration fails 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 loca...
Page 16: 5. Before Diving
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 c...
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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 ...
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Alarm reason alarm type preset alarm time is reached. 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 reason alarm type set oxygen partial pressure limit is exceeded. The alternative display is rep...
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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 ...
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Adjust with up and 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...
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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. Adjust with up and down buttons. Accep...
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Adjust 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 ...
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• 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). The dive computer is now ready for di...
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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 settin...
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5.10. Safety stops safety 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 ...
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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...
Page 27: 6. 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. Diving in air mode (diveair) in this section, we look...
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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 suunt...
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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 remaini...
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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: • remain at depth • ascend slower than 10 m/33 ft per minute • make your decompression...
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Upward pointing arrow, blinking asc 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....
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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 alway...
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Up button toggles between po 2 , olf, dive time and water temperature. Down button toggles between o 2 , maximum depth tank pressure and current time. 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 exposur...
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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 s...
Page 35: 7. After Diving
7. After diving once back at the surface, suunto cobra3 continues to provide post-dive safety information and alarms. Calculations to enable repetitive dive planning also help to maximize diver safety. Table 7.1. Alarms indication symbol on display diver attention symbol - extend surface interval vi...
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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...
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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 ta...
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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. Add surface time in 15 minutes increments. 7.6. Memory ...
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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 i, main display • maximum depth • date of dive • type of dive (air, nitrox, gauge) • dive start time • dive number • oxygen perce...
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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 ...
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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.
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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. • water contacts and push...
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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 yo...
Page 44: 9. Battery Replacement
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 installat...
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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 r...
Page 46: 10. Technical Data
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 • weight: 210 g/7.4 oz (without hose) depth gauge: • temperature compensated pressure sensor • salt water calibrated, in fresh water the readings...
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• life expectancy at 20°c/68°f: • 0 dives/year –> 3 years • 100 dives/year –>1.5 years • 300 dives/year –>1 year the following conditions have an effect on the expected battery lifetime: • the length of the dives • the conditions in which the unit is operated and stored (e.G. Temperature/cold condit...
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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 ...
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No-decompression time limits (mins) for various depths (ft) for the first dive of a series personal mode / altitude mode depth (ft) p2/a2 p2/a1 p2/a0 p1/a2 p1/a1 p1/a0 p0/a2 p0/a1 p0/a0 5 4 4 3 6 5 4 4 8 6 5 4 6 5 4 4 8 6 5 4 9 7 6 5 8 6 5 4 9 7 6 5 10 9 7 6 120 130 140 150 10.2.3. Altitude diving t...
Page 50: 11. Intellectual Property
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 (cb...
Page 51: 12. 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...
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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 ...
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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, alte...
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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 li...
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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. 55.
Page 56: Glossary
Glossary air time the amount of dive time remaining, based on a calculation of cylinder pressure and ambient pressure and present air consumption. Altitude dive a dive made at an elevation greater than 300 m/1000 ft above sea level. Ascent rate the speed at which the diver ascends toward the surface...
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Multi level dive a single or repetitive dive that includes time spent at various depths and whose no decompression limits are therefore not determined solely by the maximum depth attained. Nitrox in sports diving, refers to any mix with a higher fraction of oxygen than standard air. Noaa united stat...
Page 58: Customer Service Contacts
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...
Page 59: Year
Tw o year warranty t h is p ro d u c t is w a rr a n te d t o b e f re e o f de fe ct s in m at er ia l a nd /o r w or km an sh ip t o th e o rig in al ow ne r f or th e a bo ve n ot ed p er io d (d oe s n ot in clu de b at te ry lif e) . K ee p a c op y o f th e original pu rc hase receipt and mak ...
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