34
®
NO DECO
C Z
DECO
C Z
O
2
FT
MAX
2
O
Fig. 32 - Setting FO2
Setting FO2
To access FO2 Mode while in the Surface Mode and set the unit for Air or the
percentage (%) of oxygen (FO2) in your nitrox mix:
• press the Advance (Left) button 2 times
• press the Select (Right) button repeatedly, or press and hold it, until the
value of FO2 for the nitrox mix being used is displayed
• the FO2 value displayed (Fig. 32a) will advance from 21 to 50 (%) in in-
crements of 1 (%), then display 'Air' again.
• the Maximum Depth that can be achieved with an oxygen partial pres-
sure (PO2) of 1.60 ATA will be displayed (Fig. 32b) for each FO2 value.
No value will appear for Air.
The unit reverts to Surface Mode after 10 seconds, unless the Advance (Left)
button is pressed to access the Pre Dive Planning Sequence.
FO2 Set for a Nitrox Dive
You can set the Pro Plus for nitrogen-oxygen (nitrox) mixtures of 21% to 50%
oxygen (O2). If FO2 is set at a value of 21% (Fig. 33), the unit will remain set
as a '21% nitrox computer' for subsequent nitrox dives until FO2 is set to a
higher value, or until it automatically turns off and is reactivated.
Fig. 33 - FO2 21%
a
b
NO DECO
C Z
DECO
C Z
O
2
FT
MAX
2
O
