Raytheon STD 21 GPS Operation Manual page 79

Examples to calculate the correction heading--value:
Nominal value (heading from
the pier or other heading ref-
Indicated values can be changed after selection with soft key "Select" and will be stored
into the processor unit by soft key "Set".
In general: Settings are possible in a range of ±12° but the installation should be made
within a tolerance of ±6° (manufacturers recommendation).
Edition: Feb. 05, 2007
Satellite Compass
STD 21 GPS
If there is a difference from the pier--heading value (refer-
ence) and heading value from the display of appr. 180°, then
the antenna--cable connections in the Processor Unit have to
be checked (they may be mixed up).
erence)
358°
4°
17°
25°
The measured angle should be noted in case of a replace-
ment of the Processor Unit.
Heading value at the display
of Operator Unit
4°
358°
25°
17°
71
STD 21 GPS
Correction
value
--6°
6°
--8°
8°
3717/110--850.DOC020002