TMQ Bosun-AP9, Operation And Installation Manual

Page: 14 / 63

TMQ Bosun - AP9 Rev1 (935) Page 14 16/06/2003
Remember:
Prior to engaging GPS mode, a route must be programmed into
the GPS for the Autopilot to follow.
No GPS Data Alarm
If the autopilot is not receiving valid information while in GPS
Mode, the
No GPS Data alarm will sound, and the GPS light will
blink. This could be caused by:
•
Incorrect wiring of the GPS to the Bosun.
•
Incorrect data output from the GPS unit.
•
No route set up or selected in the GPS unit.
•
No location fix at the GPS unit.
See also Alarms in the Operation section of this manual.
The bearings generated by the GPS unit must correspond to the bearings
the Bosun is receiving from its magnetic compass. The greater the
difference between these bearings, the less accurate will be the
GPS Mode
steering.
•
Ensure that the GPS unit has the correct magnetic correction
factor.
•
Ensure that the Bosun compass is correctly aligned and
installed.