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FO2 will continue to reset to the FO2 50% Default after subsequent repetitive dives until
24 hours elapse after the last dive, or the FO2 50% Default is set Off.
FO2 set to Air
The default FO2 setting for each new activation period will be Air.
When FO2 is set for Air -
> calculations are the same as when FO2 is set for 21%.
> it will remain set for Air until set for a numerical FO2 value (21 to 50%).
> O2 data (such as PO2, O2%) will not be displayed at any time during the dive, on
the surface, or during the PDPS.
> MODs (Max Operating Depths) will not be displayed on the FO2 set screen.
> internally, it will keep track of O2 data in case FO2 is subsequently set for Nitrox for
repetitive dives.
FO2 set for Nitrox
When FO2 is set for a numerical value (21 to 50%), the dive is considered Nitrox and the
NX icon will be displayed.
> The Air option will not be displayed as a FO2 set selection until 24 hours elapse after
the last dive.
