8
Setting the time
Holding down the ●
▲
key for a long time
(3 seconds) will change from the main menu
to Option mode. The currently entered time
will flash.
The time can be put back with the ●
▼
key
and put forward with the ●
▲
key. Either press
the key briefly to alter the time displayed
in one-minute increments or hold it down
continuously for fast resetting.
Save your entry by pressing both keys ●
▼
●
▲
simultaneously or wait 8 seconds; the display
will change from Option mode to the main
menu.
An altimeter measures the altitude on the
basis of air pressure. The air pressure at sea
level is assumed to be zero pressure. This
zero pressure is called QNH. Dependent on
weather conditions, the air pressure at sea
level fluctuates between 950 and 1050 milli-
bars. Even on a stable day, there can be fluct-
uations in the air pressure of ±1 mbar due to
the temperature and this corresponds to a
deviation in altitude of ±8 meters. When the
weather is changing fast, for example, cold
fronts, the air pressure can change by up to
5 mbars in one day and the deviation in alti-
tude can amount to up to 40 meters. Owing to
these fluctuations in air pressure, an altimeter
must be recalibrated each time it is used. This
means that the altimeter must be reset at a
known altitude (e. g. at home, at a railway
station, at a ski hut, etc.).
Note: If instrument is set up to read feet, and
user exceeds 19,999 ft., the ‹1› digit will
drop off. (i. e., At an elevation of 21,500 ft.,
instrument will read 1,500 ft.).
Altimeter
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