Just discovered I was using a metal housed DB-9 connector on the EDC-10A magnetometer. While a magnetic survey of the area (rear deck of an RV-9A) revealed no magnetic anomalies, the compass would swing mildly when very close to that connector.
A call to Dynon support confirmed that there is an all plastic connector that is to be used with the magnetometer. I must have accidently substituted another connector when I did the install... almost 5 years ago.
My symptoms were wallowing in roll, or we had to use higher sensitivity settings which induced twitchiness. I settled for the dumbed down settings (roll rate = 0) and that worked for the most part. Also when capturing a track it showed as an underdamped system and was in need of some pilot guidance.
It will be a few weeks until we fly again so I will not be able to confirm that the connector is the issue. Meanwhile though, I thought I would alert those that may see some strange autopilot behaviour with the EDC-10A magnetometer so they can check that they have the correct connector installed.
Alfio
A call to Dynon support confirmed that there is an all plastic connector that is to be used with the magnetometer. I must have accidently substituted another connector when I did the install... almost 5 years ago.
My symptoms were wallowing in roll, or we had to use higher sensitivity settings which induced twitchiness. I settled for the dumbed down settings (roll rate = 0) and that worked for the most part. Also when capturing a track it showed as an underdamped system and was in need of some pilot guidance.
It will be a few weeks until we fly again so I will not be able to confirm that the connector is the issue. Meanwhile though, I thought I would alert those that may see some strange autopilot behaviour with the EDC-10A magnetometer so they can check that they have the correct connector installed.
Alfio