16
FO2 MODE
After Activation, the
ATMOS ai
will operate as an Air computer
without displaying information associated with oxygen calcula-
tions, unless it is set for a percentage of oxygen (FO2) other than
Air (numerical value between 21 and 50 %).
NOTE: Setting FO2 is described on Page 27.
When set with an
FO2 value of 'Air'
(Fig. 6), the
ATMOS ai
will
perform calculations the same as if FO2 were set for 21% oxygen,
internally accounting for oxygen loading for any subsequent
Nitrox dives. However, oxygen related displays, warnings, and the
O2 bar graph will not appear on the display for that dive, or subse-
quent dives, unless FO2 is set for a numerical value (21 - 50).
Once a dive is made with the unit set as a nitrox computer (FO2 set
for a numerical value), the unit cannot be programmed to operate
as an 'Air' computer until 24 hours after the last dive. 'Air' will not
be displayed as an option in the FO2 Mode. However, you can set
FO2 for 21% for use with Air.
When FO2 is set at a
value of 21%
(Fig. 7), the unit will remain
set at 21% for subsequent nitrox dives until FO2 is set to a higher
value, or until it automatically turns off and is reactivated.
Fig. 6 - FO2 Air
Fig. 7 - FO2 of 21%
