45
Maximum Operating Depths affected by the PO2 limit set will
not be displayed when FO2 is set for AIR.
Internally, the GEO keeps track of the oxygen loading so that if
FO2 is subsequently set for a numerical value, the oxygen
accumulation for previous AIR dives will be accounted for in
the next Nitrox dive (during that dive period and series of
repetitive dives).
Once FO2 is set for a numerical value (21 to 50%) and a dive
is made, the AIR option is disabled until 24 hours elapse after
the last dive. The AIR option will not be displayed in Set FO2
selections until a full 24 hour Surface Interval has elapsed.
If FO2 is set for 21%, it will remain set for 21% for that series
of dives until set for a higher numerical value.
SET FO2, information provided includes (Fig. 37/38):
> Graphic FO2
> Max Depth allowed for the PO2 Alarm Set, if FO2 is set
for 21 to 50% (Nitrox).
> FO2 Set Point value flashing, graphic Air or numerical
value with FO2 icon.
> PO2 Alarm Set Point with PO2 icon, for Nitrox Set Points.
> Nx icon, for Nitrox Set Points.
Pressing and releasing the S button will advance FO2 in
increments of 1% per press of the button.
Fig. 37 - SET FO2
(AIR setting)
Fig. 38 - SET FO2
(32% O2 setting)
