SUUNTO X10 - Manual (Page 34)

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2. Hold your Suunto X10 horizontally level and rotate it 360 degrees in the direction of
the arrows for 30 seconds. If the calibration succeeds, the message ‘COMPLETE’ is
displayed. If it does not succeed, the message ‘FAILED’ is displayed. If this
happens, you have to calibrate it again.
3. When the calibration is finished, press ENTER to return to the main display.
3.4.3. Declination
You can set the compass declination manually or let the GPS do it. The compass
declination options are introduced in the table below:
Off Compass points to the magnetic north.
On Compass points to the geographic north based on the manually
set declination.
Use this when you know the exact declination of
the location. Normally, you can find this on a topographic map.
Auto Compass points to the geographic north based on the declina-
tion from the GPS database value for the current location.
Use
this when you do not know the exact declination of the area.