3.14.3.1. Surface timer
While freediving, you can use the surface timer to help you prepare yourself for you next dive.
Suunto D5 starts the counter as soon as you reach 0.9 m (2.9 ft).
3.15. Dive planner
The dive planner in Suunto D5 helps you to quickly plan your next dive. The planner displays
available no decompression time and gas times for your dive based on depth, tank size and
gas consumption set.
The dive planner can also help you plan dives in series, taking into account the residual
nitrogen from your previous dive(s) based on the planned surface time you enter.
NOTE: It is important to adjust tank size, tank pressure and personal gas consumption
to get the gas calculations right.
See 4.7. How to plan a dive using the Dive planner for details on planning your dives.
3.16. Gas consumption
Gas consumption refers to your real-time consumption rate of gas during a dive. In other
words, it is the amount of gas a diver would use in one minute on the surface. This is
commonly known as your surface air consumption or SAC rate.
Gas consumption rate is measured in liters per minute (cubic feet per minute). This is an
optional
field and needs to be added to your custom dive mode views in DM5.
For enabling gas consumption metering, see 4.9. How to enable gas consumption metering.
3.17. Gas mixtures
If Air / Nitrox dive mode is selected, you need to
define the gas(es) for the decompression
algorithm to work properly. You
define the gases under Gases. In Air / Nitrox mode you can
change O
2
percentage and PO
2
value.
NOTE: When you have analyzed your gas, you should round the result down when
entering it for Suunto D5. For example, if the analyzed gas is 31.8% oxygen, then define the
gas as 31%. This makes the decompression calculations safer.
WARNING: THE DIVE COMPUTER WILL NOT ACCEPT FRACTIONAL PERCENTAGE
VALUES OF OXYGEN CONCENTRATION. DO NOT ROUND UP FRACTIONAL PERCENTAGES!
Rounding up will cause nitrogen percentages to be understated and will
aect
decompression calculations.
NOTE: You can customize what you see in the Gases menu. See 3.8. Customizing with
Suunto DM5.
Suunto D5
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