2 – Target should not have
3 – Unit shall be well leveled with deviation from 0 not more than ±0.75 degrees. Horizontal direction shall be to Magnetic North (not True North). If devices detects large installation errors (unit is not well leveled or not aimed to the North), then LCD will show result “444”, which means that correction was not performed due to incorrect setup.
Compass calibration
If the System was exposed to a strong magnetic field or was not in use for a long time, the compass accuracy may diminish.
To return the compass into working condition:
Select CALc from CAL menu
Keeping the unit horizontally, perform one full rotation (360˚) around vertical axis within a minute
If one rotation does not restore calibration – perform two rotations per a minute.
The normal compass functioning will be restored.
16