Simrad AUTOPILOT SYSTEM AP50 - Manual (Page 151)

Advanced Settings
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The Autotrim parameter is reset every time the AUTO mode is
entered or when a course change greater than approximately 20°
is made by the course knob.
Autotrim is automatically disabled during a turn.
Course Adjust
When using the (PORT) or (STBD) buttons in AUTO
mode, you are changing the set course in 1° increments. If you
prefer the increments to be 5° or 10° each press, proceed as
follows:
Select Course adjust using the (PORT) or (STBD) button.
Turn the rotary knob to display the setting. The default value is
1°, which is the preferred setting. Select 5° or 10° if you want to
make major course changes in 5° or 10° increments with the
buttons and fine-tune the set course with the course knob.
Compass difference
When two compasses are used (main compass and monitor
compass), there is virtually always a difference between the
readings of the two. If the difference in reading exceeds the set
limit for Compass diff., an alarm is given.
Range: 5 to 35°.
Default: 10°.
Note ! The difference between the two compass readings may vary with
the vessel’s heading and from one area to another where a
vessel is in transit. The difference between the two compass
readings is automatically reset when the Compass diff. alarm is
given and then reset.
Off Heading lim
This sets the limit for the ‘Vessel off course’ alarm. This alarm
occurs when the actual heading deviates from the set heading by
more than the selected limit.
Range: 3 to 35°.
Default: 10°.