User manual SUUNTO D6 QUICK GUIDE

[. . . ] CUSTOMER SERVICE CONTACTS S u u nt o O y Suunto USA Canada Europe Suunto website Phone +358 9 875870 F ax +3 5 8 9 8 7 5 8 73 0 1 Phone 1 (800) 543-9124 Phone 1 (800) 776-7770 Phone +358 2 284 11 60 www. suunto. com 1 1. WELCOME TO THE WORLD OF SUUNTO DIVING INSTRUMENTS . . . . . . . . . . . . WARNINGS, CAUTIONS, AND NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SUUNTO D6 AT A GLANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] This is shown with the STOP sign and a three-minute countdown in the center window instead of the no-decompression time. 52 WHEN STOP IS DISPLAYED, MAKE A RECOMMENDED SAFETY STOP FOR 3 MINUTES. NOTE The Recommended Safety Stop, as the name implies, is recommended. If it is ignored, there is no penalty applied to the following surface intervals and dives. 5. 10. 2. Mandatory Safety Stops When the ascent rate exceeds 12 m/40 ft per minute momentarily, or 10 meters/33ft per minute continuously, the microbubble build-up is predicted to be more than is allowed for in the decompression model. When the ascent rate exceeds 10 m/33 ft per minute continuously for more than 5 seconds, the microbubble build-up is predicted to be more than is allowed for in the decompression model. 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. 53 The STOP sign appears in the display and when you reach the depth zone between 6 m and 3 m/20 ft and 10 ft, the CEILING label, ceiling depth, and the calculated Safety Stop time also appear in the display. You should wait until the Mandatory Safety Stop warning disappears. The total length of the Mandatory Safety Stop time depends on the seriousness of the ascent rate violation. WHEN CEILING AND STOP ARE DISPLAYED, MAKE A ONE MINUTE MANDATORY SAFETY STOP IN THE DEPTH ZONE BETWEEN 6 M AND 3 M. You must not ascend shallower than 3 m/10 ft with the Mandatory Safety Stop warning on. If you ascend above the Mandatory Safety Stop ceiling, a downward 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 dive, there are no effects on the decompression calculations for future dives. 54 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 is recommended that you prolong your surface interval time before your next dive. Deep stops The Suunto D6 allows you to choose a Deep Stop algorithm instead of the traditional Recommended Safety Stop. 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. The Deep Stop length can be set to 1 or 2 minutes. Enabling the Deep Stops disables the Recommended Safety Stops, but Mandatory Safety Stops due to continuous ascent rate violations, for example, are still prompted. 55 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. Diving in AIR mode (DIVEair) In this section, we look at how to make the most of the dive computer when diving with standard air. [. . . ] 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. 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. Dive series Dive time EAD EAN Enriched air nitrox Equivalent air depth Floor Half time Multi level dive 104 Nitrox NOAA No decompression time In sports diving, refers to any mix with a higher fraction of oxygen than standard air. United States National Oceanic and Atmospheric Administration. The maximum amount of time a diver may remain at a particular depth without having to make decompression stops during the subsequent ascent. [. . . ]