Alignment Error Correction - C.Plath NAVIGAT X MK 1 Mod. 10 Operator's Manual

NAVIGAT X MK 1 Mod. 10 / SR-180 MK 1 Mod. 10
4.4.1

Alignment Error Correction

In order to obtain correct heading data, the existing alignment error (i.e. the angle
between the compass' and the vessel's longitudinal axes) must be determined and
the required correction applied. Alignment error is 0° if the sides of the compass
housing run exactly parallel to the vessel's longitudinal axis and the back of the hous-
ing points dead ahead. Alignment error correction is carried out electronically by set-
ting the required correction value in the service setup 1.
Caution:
Before alignment error correction is carried out, the gyrocompass system is to be in
continuous operation for at least 4 hours.
1) Determine the existing alignment error.
Note: If bearing repeaters are used to determine the aligment error, these must be
properly aligned to the vessel's longitudinal axis.
2) In the service setup 1, select the align error correction sub-menu.
3) Enter the required correction value. The correction value equals the align-
ment error with the sign reversed.
Note: After correction of the alignment error, the compass is to display the vessel's
true heading to an accuracy of at least 0.5°.
Page 4-04
vessel's longitudinal axis
compass orientation
alignment error
correction value = -(alignment error)
056310
3-149 MK110ENG.P65
... SERVICE SETUP 1 . .
.. ALIGN ERROR CORR. . .
.......+000.0°