For example: If it is London city, its declination is
-4°,which can be got from some reference documents. Then
set the declination to -4°, and save the data and return to
compass measurement state by long press the MODE
button. Now, the angle displayed on panel is the current
bearing reference to earth north.
Another way to set declination: If earth north is known,
then hold device level, and directing to north, then read the
angle
θ
, displayed on LCD panel. If
θ
is in the range of 0 to
360, then set the declination to “-
θ
°”. If
θ
is in the range of
270 to 359, then set the declination to “360-
θ
°”. By this way,
not only to calibrate the declination, but also to avoid the
device offset error.
Setting Declination: Short press the MODE button to
switch setting option. Short press the FUNCTION button to
change the setting option, which is blinking. Declination
can be set to the angle in the range of –90 degree to 90
degree.
Enter Compass Calibration: Press both the Mode key
(left key of the back side)and the function key(right key of
the back side)in the same time, when the screen showing
numbers, relase the function key first, do not relase the
Mode key until you see the “CALIB”, show in the above
Compass Calibration: Short press the FUNCTION
button to start calibration in calibration state. As showing
in the below picture. Then, hold the device level, and
rotate the device slowly and equably in a full clockwise or
counterclockwise circle. At last, short press the FUNCTION
button to exit compass calibration state. And it enters
compass mode after displaying the “END” message for
about 0.5 seconds.
Note: Hold the device level during the compass
calibration. And make sure that there is none strong
magnetism disturbance around. Because it will cause the
inaccuracy of the compass, even to work incorrectly. Then
it should calibrate the compass again.
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