User manual SUUNTO COBRA 3

[. . . ] WARNINGS, CAUTIONS, AND NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SUUNTO AT A GLANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Navigating in the menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Button symbols and functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] 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. 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. ACTIVATED BACKLIGHT, ALARM AND A BLINKING ASCENT RATE BAR GRAPH INDICATE YOU ARE ASCENDING FASTER THAN 10 M/MIN. YOU ARE ADVISED TO MAKE A MANDATORY SAFETY STOP WHEN YOU REACH A DEPTH OF 6 M. NORMAL ASCENT RATE. WARNING DO NOT EXCEED THE MAXIMUM ASCENT RATE!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 over 10m. 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. 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: · 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 · the time needed at the ceiling · the time needed at the Mandatory Safety Stop (if any) · the time needed to reach the surface after the mandatory decompression dives have been completed 29 NOTE WARNING In addition, there may also be Mandatory Safety Stops which are not displayed in ASC TIME. 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 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. · The ceiling is the shallowest depth to which you should ascend when in decompression. At this depth, or below, you must perform all stops · The ceiling zone is the optimum decompression stop zone. It is the zone between the minimum ceiling and 1. 2 m/4 ft below the minimum ceiling · The floor is the deepest depth at which the decompression stop time will not increase. [. . . ] Standard mixes are EAN32 (NOAA Nitrox I = NN I) and EAN36 (NOAA Nitrox II = NN II). 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). Central nervous system toxicity CNS CNS% Compartment DAN DCI Decompression Decompression range Decompression illness Dive series Dive time P EAD EAN Enriched air nitrox Equivalent air depth Floor Half time HP 56 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. [. . . ]