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[TG11] St5000+
11-14-19, 02:58 AM (This post was last modified: 11-14-19 11:48 AM by Chuck - Raymarine - Moderator.)
Post: #1
[TG11] St5000+
I am having issues calibrating my autopilot - has previously worked well

I can complete the compass deviation correction getting a deviation of 4deg. The issue is with the heading alignment. I go thro the procedure and get the display heading to agree with my compass heading. I then exit the calibration screen

When I do this the alignment heading remains on the display irrespective of the heading of the boat. Ie set to say 180deg during calibration - after exiting calibration 180deg remains the displayed heading

Any advice appreciated

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11-19-19, 08:57 PM
Post: #2
RE: [TG11] St5000+
Hello Geoff0499,

Is the indicated heading static from power-up, or does it respond normally up to a point and then stop changing? If the latter, what is the trigger for it stopping responding?
  • Heading that is completely static from power-up is usually a faulty fluxgate compass, though if this were the case I would not expect the compass swing to complete.
  • Heading that is dynamic at start-up and then stops changing at some time after without any buttons being pressed is usually either a Data Loop (data cycling between two networks, e.g. Seatalk and NMEA0183, and the same stale data value being passed between the networks) or a broken winding in the fluxgate compass.
  • If the heading only stops responding when you perform some action, what is the action?


Raymarine since 1999.
Interests: Diagnosis of problems in sonar/fishfinders, NMEA2000, ethernet comms, autopilots, thermal cameras
Location: Sydney, Australia.

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