[CA] [CA11] Autopilot heading and COG intermittent mismatch

[roycadman]

Chuck

Thanks for the reply. The a97 chartplotter is the master with the GPS enabled and is located outside at the helm. The other chart plotter is the slave, GPS disabled, a Raymarine switch connects the two plotters. All instruments have the latest software, albeit over two years old as there are no longer updates for this chartplotter. The autopilot ACU400 is mounted inside the saloon adjacent to the rotary drive, behind a protective panel, the sensor pack is mounted on the opposite side of a wooden panel, behind the trash can. There are two other pictures attached, showing the behavior, taken less than one minute apart. There is an external GPS mounted just to the side of the a97 that is connected to the AIS650 only. I have attached 5 pictures to this reply.

Regards
Roy