Owners manual

17
Move the sensor towards or away from
the compass until a new maximum level
is observed. This is the optimum
distance from the compass to mount the
sensor. Any closer and the sensor may
interfere with the operation of the
compass.
The accuracy of the sensor, and its
sensitivity to external fields, will slowly
weaken as it is moved further from the
compass. If the reading on the autopilot
display decreases when the heading on
the compass is increasing, turn the
sensor over. Rotate the sensor until the
heading on the display of the autopilot
matches the reading on the compass,
and tighten the mounting screw.
Rotate the compass through 360
degrees, comparing readings every 20
degrees. The readings should agree
within +/- 2 degrees (4 degrees total
error) if the compass is compatible with
the sensor.
As a further test, tilt the bowl of the
compass so the card tilts relative to the
sensor. The heading on the display of
the autopilot should not change more
than two degrees, with the compass still
indicating the same heading.
If the heading changes more than two
degrees, the magnets on the compass
card are not powerful enough, and the
compass is not compatible with the
sensor.
If the accuracy of the compass and
sensor combination cannot be made at
least +/- 2 degrees, then the compass is
not compatible with the autopilot sensor.
Your dealer can supply a compass
specifically designed for the ComNav
1001 autopilot.