uAvionix AV 30 Calibration of Magnetometer

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This is the procedure for calibrating the built in magnetometer., in the AV30 display used with the Tail Beacon-X. It took us three tried to get the proper result.
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Thanks so much for making this. I think the company would have saved thousands of hours of phone calls had they mad this video themselves. 👍

grant
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I just had a pair of these installed in my 172-N and the vac system removed. By default, the DG does not use the magnetometer and drifted about 5* per 30 minutes, which is better than a mechanical gyro. I was happy with that, but just for fun I enabled the internal magnetometer (set AID mode to MAG1) and then calibrated it similar to how you did it here. All turns standard rate (2 minutes per 360). For the first calibration I made my turns R, R then L, L and the drift was worse than the default of not using the magnetometer! I calibrated a second time making the turns alternating: L, R, L, R and the result was much better.

michaelclements
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Great video, I need to do mine again.

scottyp
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What are you using for a DG and the OBS heading adjust?. Also, does the AV 30, heading bug move to indicate what the GPS has it set to, or the DG has it set to? Example: I know you can't set the OBS bug or heading bug on the AV 30. But does it at least show what the bug is?, assuming the bug was set by the DG OBS, or the bug was set GPS itself due to direct to hdg mode .

josephkaminski
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Did you have yours in MAG1 or MAG2?
Also I’m wondering why when the DG is function locked there is no way to adjust heading after it drifts

VGreggUndercover
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I would be interested in hearing if you precession is now acceptable after a few flights.

garytroop