67
Calibration of the
barometer
The watch has been
calibrated at the
factory. Under normal
use you do not need to
calibrate the barometer.
For advanced users,
however, the watch is
adjustable.
Calibration of absolute
pressure
The watch can adapt the cur-
rent pressure measurement to
an absolute pressure value.
Before calibration of the
barometer you should contact
the nearest weather station
to fi nd out the air pressure of
your current position.
In the current time mode
press the “PILOT” key until
Calibration to factory
settings
Keep pressing the “PILOT”
key until the altitude indicator
“BARO” appears. Press
“MODE” for 2 seconds.
The fl ashing “SET” symbol
and “AIRP.” are displayed. By
again pressing the “MODE”
key you change to the indica-
tor “F.DEF”.
Press the “MODE” key
for around 2 seconds to
confi rm the settings.
the altitude indicator “BARO”
appears.
Press “MODE” for 2 seconds.
The fl ashing “SET” symbol
and “AIRP.” are displayed.
After pressing the “CHRONO”
key the current pressure fl ashes
in the display. You can change
the value with the “CHRONO”
and “LAP/RESET” keys.
With the “CHRONO” and
“LAP/RESET” keys you can
choose between “YES” and
“NO”. With “YES” you return
to the factory setting.
Then press the “MODE” key
for 2 seconds to confi rm the
settings.
The watch returns to barome-
ter mode.
TRE_GA_GC350-400.indd 67
22.12.2006 11:59:10 Uhr
