Raymarine ST6000 Service Manual page 167

Fluxgate Compass (Z105)
1. Description
The Z105 Fluxgate Compass Transducer contains a precision Fluxgate sensor and,
once detected as faulty, should be replaced as a complete unit.
2. Functional Test
Disconnect the Fluxgate from the autopilot and check continuity as follows:-
Cable Colour
Screen to Blue
Red to Green
Red to Yellow
Red to Screen
3. Magnetic Deviation
The Z105 Fluxgate Compass requires careful siting if optimum autopilot performance
is to be achieved. The SeaTalk Course Computers are able to correct the compass
for any deviating magnetic fields present when the linearisation procedure is carried
out. Any further deviation, introduced after linearisation, will introduce an error be-
tween the Fluxgate and the ships compass. This can be removed by carrying out the
linearisation procedure again. If the displayed deviation is greater than +/-15 degrees
the Fluxgate should be re-sited. Note:
The linearisation procedure should always be carried out if the fluxgate has been
exchanged, removed or moved from its original mounting position.
Resistance
< 10 ohms
< 5 ohms
< 5 ohms
Open Circuit
Autohelm Autohelm
Autohelm Autohelm
SeaTalk Service Manual 3