20
FO2 50% Default
If the Default function is set to ON
(Fig. 12) and FO2 is
set to a value 'greater than 21%', the FO2 set point value will
automatically revert to 50% 10 minutes after that dive. The
Maximum Depth that can be achieved with a PO2 of 1.60 ATA
will also be displayed.
• FO2 must therefore be reset for each repetitive nitrox dive,
or the value will automatically 'default' to 50(%) and the
dives will be calculated based on 50% O2 (50% nitrogen)
for oxygen calculations and 21% O2 (79% nitrogen) for
nitrogen calculations.
If the Default function is set to OFF
(Fig. 13), the FO2
value for repetitive dives remains the same as previously set until
the set point is manually changed.
WARNING: When the unit shuts off, the FO2 set
point will default to AIR regardless if the 50% Default
is set ON or OFF. Always set, or verify, the FO2 set
point prior to each nitrox dive.
Setting FO2 for a nitrox dive is described on page 27.
Fig. 12 - FO2 Default ON
Fig. 13 - FO2 Default OFF
ATR
O
2
ATR
O
2
