Suunto Wristop Computer X10 User Manual

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4.1.3. Second hiking day
Right on time, Mike wakes up to a beeping sound, shuts down the alarm with a press 
of a button, and checks the Baro mode. He is happy to notice that the barometric 
pressure is on the rise, which augurs good weather.
Before setting off, Mike switches his Suunto X10 to the Alti mode so that he can use 
the altimeter as a navigational aid, and of course that he can monitor how far it is to the 
top
While waiting for his breakfast to be ready, he calibrates the compass to make sure it 
works properly. He also sets the declination to the Auto setting so that he does not 
need to look at the map too often.
Mike navigates using the Suunto X10 compass together with the uploaded routes, the 
altimeter and the map. Just like with a regular compass, he checks from time to time 
that the compass works properly. If the bearing indicator stops moving or the cardinal 
points seem to be in weird directions, he calibrates the compass again.
Even though the weather conditions are excellent and there is not a cloud in the sky, 
Mike is also prepared for a whiteout, which would reduce visibility drastically and 
cause problems to the GPS signal reception. He has practiced taking his bearings 
using a map and transferring them to his Suunto X10 on dozens of easier routes 
where mistakes do not have as dramatic consequences.