Marine Tech Seacraft ENC II, Quick User Manual

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21. Compass
Allows to calibrate the magnetometer (compass sensor) and to set the magnetic declination and deviation.
Calibration – This option is used for basic magnetometer calibration. You should use this function, when the compass
direction shown on this device is improper. This is usually needed when the magnetic properties of the environment
have changed.
In every location, magnetic background, declination and other magnetometer-influencing factors are different. Thus,
the compass should be calibrated every time, when the location is changed, especially when there are big distances
travelled (travelling to another continent, or to a distant country).
Activate this function, and rotate the device slowly in all possible directions in 8-shape. This should take at least 1
minute. A green progress bar will be shown on the screen. The lower button will be marked as BACK until the progress
is less than 100% (time <1min). Pressing this button stops this operation, and no calibration data will be changed. After 1
minute, the lower button will be marked as SET, and pressing it will cause to apply the new collected calibration values
to the compass sensor.