Instruction manual

Robertson AP11 Autopilot
78 20220513E
Compass calibration
The display will read COMP CAL. This function will
activate the AP11 compass calibration procedure. The
procedure will enable the compass to be automatically
corrected for magnetic deviation on the boat that would
alter the heading readout from the AP11 autopilot.
Before you begin the compass calibration procedure, make
sure you have enough open water around you to make a
full clockwise or anti clockwise turn with the boat. Let the
boat turn at idle. You need 1
1
/
4
turn to complete.
The calibration should be done in calm sea conditions and
with minimal wind to obtain good results.
• Begin turning the boat.
• Press the MODE button to activate, - the display will
flash YES or NO.
• If the display reads NO, press > to acknowledge YES.
• Press MODE again.
• When the calibration is completed, (after having made
approximately 1 1/4 turns), it will be confirmed in the
display by showing dONE.
If the compass is close to disturbing magnetic objects, the
compass calibration may fail, and the display will show
"FAIL"
In that case move the compass to a better location and
re-calibrate.
After calibration, check the compass readout against a
known reference, other compass or leading line. If the
reading is correct (+/-3°) except for a fixed offset, use the
COMPASS OFFSET setting to input a fixed correction to
offset the heading readout.
Push > to proceed to next menu item.
Compass Offset
The display will read COMP ADJ. This feature allows you to
correct for a constant compass heading offset that may be
present as a result of the RFC35 being installed with the
lubber line offset or a fixed offset remains after the
calibration procedure has been completed. The COMP ADJ