Holux GM-120 - Manual (Page 42)

35
Calibrating Altitude
Altitude calibration is the process used with barometer altimeter and GPS
altitude. GPS altitude is used as the reference.
To perform altitude calibration:
1. In Professional mode, press the Page button to
display the Info page.
2. Press the Menu button to display the menu
options.
3. Use the up/down navigation keys to select
Calibration
Alt.
and press OK to confirm.
4. Select Auto by GPS or Manual and press OK
to confirm.
Note: This function just for the models integrated
barometer, the GM-120B and GM-120C.