40
ATR
O
2
N
2
TO SET - FO2 50% DEFAULT
(while in the Surface Mode)
Factory set ON, the FO2 50% Default feature can be set to
OFF. The effects of this feature being ON or OFF are de-
scribed on page 19.
Press Both buttons simultaneously, release when SET: 2
appears (4 seconds).
Press and release the Left (Advance) button, the Units
screen appears with the set point flashing.
Press the Left (Advance) button 14 more times.
The graphics FO2 and 50 appear with ON (or OFF)
flashing (Fig. 38).
Press and release the Right (Select) button to toggle
between ON and OFF.
Press the Left (Advance) button to accept the setting and
advance to Set Backlight Duration, or press and hold Both
buttons for 2 seconds to revert to Surface Mode.
Fig. 38 - Set FO2 50% Default
