ComNav 1101 Autopilot4 - 14 INSTALLATION
Locate and mount the compass in a position which minimizes
magnetic interference. The compass should be at least 1m (about
3’) away from such equipment as radios, radars, depth sounders,
and engine instruments.
The compass can be used as a steering compass if desired. If the
amount of cable supplied is too short to reach the SPU, obtain an
extra plug-in length of cable from your ComNav dealer. Cutting and
splicing the compass cable is NOT recommended.
To reduce the possibility of the card ‘tumbling’ in rough weather,
mount the compass as
close as practical to the center of pitch.
Mounting the compass far forward under a bunk or similar location
is a poor choice for rough weather performance.
IMPORTANT!
It is important to remember that the compass is a vital
part of the 1101 Autopilot System. Locating it properly,
particularly on steel-hulled vessels, is essential to ensure
proper operation of the Autopilot. We recommend that the
services of a qualified compass adjuster be used to select
the best installation location and to compensate the
compass properly for deviation, including that caused by
heeling error.
Care must be taken not to place compensating magnets
too close to the compass, as this will cause the Compass
Sensor, mounted underneath the compass, to read
incorrectly. To correct compass deviation on steel vessels,
or on other vessels with magnetic compensating problems
due to interference from adjacent iron masses such as an
engine block or winches, the use of a pair of
compensating quadrantal spheres is recommended.
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