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Autopilot fails on Raytheon ST5000+ with "No Data" error

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Peter Bennett

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Autopilot fails on Raytheon ST5000+ with "No Data" error

On 10 Jun 2004 15:40:53 -0700, (Donagh) wrote:

Hello, I have a 38ft (11.5m) sailing cruiser with a Raytheon ST5000+
autopilot, Raytheon radar/chart plotter with Wind, Depth, Speed, GPS,
fluxgate compass, etc.
The autopilot works only when travelning west. Attempting to calibrate
the system always fails at the "Turn Boat" phase with a "Too Fast"
error even thou I've done the turn dozens of times exactly by the
book. The ST5000+ compass heading is wildly inaccurate. As the boat
turns the ST5000+ compass display jumps in large increments rather
than smoothly as I would expect.
Tying the autopilot in any direction other than West results in a
change of direction or a "No Data" error.
Any ideas?

Many thanks, Donagh.

I had some very weird problems with an AutoHelm compass caused by the
compass sensor getting hung up on its wiring or gimbals (inside the
sensor housing). I opened the sensor housing and made sure the sensor
itself was correctly positioned and free to move - _then_ I was able
to do the calibration, and the pilot worked.

--
Peter Bennett, VE7CEI
peterbb4 (at) interchange.ubc.ca
new newsgroup users info : http://vancouver-webpages.com/nnq
GPS and NMEA info: http://vancouver-webpages.com/peter
Vancouver Power Squadron: http://vancouver.powersquadron.ca

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