TMQ AP4 - Calibrating TMQ Electronic Compass - ELECOM; Resetting Compass to Factory Calibration

TMQ AP4 Autopilot (AP4S10) 49 of 62 Version 4.96 9/10/2017
Calibrating TMQ Electronic Compass - ELECOM
 Rotate MODE switch on AP4 to SET
 Press and hold pressed the GPS button
 Press TIMER button – display should read 900
 Release GPS and TIMER buttons
 Rotate COURSE knob until display reads 901
 Press TIMER button
 Display should flash between CAL and current boat heading
 Turn the boat slowly through one complete circle in any direction.
Note 1: on completion of the turn for the electronic compass, the autopilot does
two (2) beeps, and displays “CAL” for 5 seconds. The calibration is
saved automatically and the AP4 goes back to set mode.
Note 2: if the vessel is being turned too slow, or too fast, the calibration fails.
“SLO” or “FAS” is displayed respectively, and then after some seconds
“FAil" is displayed.
This completes the compass calibration. Check alignment of the AP4 compass
by steering vessel due North (000 on ships compass) and, if necessary, rotate
outer case of AP4 compass in its bracket until heading display reads 000.
It is important to realise that on any vessel the ships compass can have heading
errors as a result of the vessels magnetic signature. These errors can be
minimised by having the ships compass swung and compensated by a licensed
compass adjuster. Such adjustment should be repeated annually. In any case it
is highly unlikely that the ships compass and autopilot compass will be
congruent for every heading.
If you are unsure of the success of the calibration, you may return to the factory
calibration.
Resetting Compass to Factory Calibration
 Switch MODE switch on AP4 to SET
 Press and hold pressed GPS button
 Press TIMER button – display should read 900