NOTE: If there is more history information available than can be shown in a single
screen, you can scroll through the additional information with the upper and lower buttons.
3.14. Dive modes
By default, Suunto D5 has three dive modes: Air / Nitrox, Free and Gauge (bottom timer).
Select the appropriate mode for your dive under Dive settings »Mode. If you select
O, your
Suunto D5 can be used as a regular watch. In this case, all dive functionalities are switched
o.
3.14.1. Air / nitrox mode
Air mode is for diving with regular air.
Nitrox mode is for diving with oxygen-enriched gas mixtures.
Diving with Nitrox allows you to increase bottom times or reduce the risk of decompression
illness. However, when the gas mix is altered or depth increased, the oxygen partial pressure
is generally increased. Suunto D5 provides you with information to adjust your dive and stay
within safe limits.
In Nitrox mode, both the percentage of oxygen in your tank and the oxygen partial pressure
limit must be entered into Suunto D5.
This ensures correct nitrogen and oxygen calculations and the correct maximum operating
depth (MOD), which is based on your entered values.
The default oxygen percentage (O
2
%) setting is 21% (air) and oxygen partial pressure (PO
2
)
setting is 1.6 bar (20 psi).
Air/ Nitrox mode has four views:
•
No deco - The arch shows the no deco time.
•
Compass
Suunto D5
26
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