Suunto 25002D Manuale Utente

Pagina di 66
29
3.3. ALTI/BARO MODE
The Alti/Baro mode has two alternative displays: Altitude and related parameters in
Alti Use and weather data such as barometric pressure and temperature in Baro use.
With the Use selection you can select whether you use this mode as an altimeter or
as a weather station. The Alti/Baro mode also contains the weather memory and the
reference setting needed to relate the current weather state to your current altitude.
3.3.1. Use (Alti/Baro)
With this function you can set Suunto t6 to display either barometric or altitude-related
information. It also defines whether the Training logbook records altitude profile or
not.
When the Alti use is active, Suunto t6 assumes that all the barometric pressure
changes are due to altitude changes. The logbook in the Training mode records
altitude data. Alti is intended for measuring the altitude whenever you are on the
move. However, since substantial barometric pressure changes can take place during
a day, you should compare the changes reported by Suunto t6 to well-known
references. If these differ from each other too much, the reason is the weather
change and you should set a new reference value as advised in section 3.3.4.
Reference altitude and barometric pressure
. A general rule is that a 10 m change in
altitude equals 1,2 hPa in the barometric pressure at sea level and 0,5 hPa at 8000
m.
When the Baro use is active, Suunto t6 assumes that all the barometric pressure
changes are due to weather changes. The training logbook does not record altitude
data. Baro use is practical for following and predicting weather trends when staying in
a constant altitude.