SUUNTO Vyper Air - Manual (Page 30)

Explanation Symbol
You are 180 degrees from the locked bearing
You are 120 (or 240) degrees from the locked bearing
4.3.3. Compass settings
You can define the compass settings (Calibration, Declination and Timeout) in the
COMPASS mode:
Calibration
Because of changes in the surrounding magnetic field, the Suunto Vyper Air electronic
compass occasionally needs to be re-calibrated. During the calibration process, the
compass adjusts itself to the surrounding magnetic field and to tilting. As a basic rule,
you should calibrate the compass whenever it does not seem to operate properly, or
after replacing the dive computer's battery.
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