User manual SUUNTO COBRA 2

[. . . ] WELCOME TO THE WORLD OF SUUNTO DIVING INSTRUMENTS . . . . . . . . . . . . . . . . WARNINGS, CAUTIONS, AND NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SUUNTO Cobra2 AT A GLANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Navigating in the menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] 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. 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 NOTE Filling your BC affects the air time calculation due to the temporary increase in air consumption. A change of temperature will affect the cylinder pressure and consequently the air time calculation. 27 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. ADJUST WITH UP AND DOWN BUTTONS. ACCEPT WITH SELECT BUTTON. Three double beeps are also heard when the cylinder pressure goes down to the userselected alarm pressure and when the remaining air time reaches zero. Ascent rate indicator The ascent rate is show 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!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 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. [. . . ] Abbreviations for oxygen enriched air nitrox. 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%. [. . . ]