[DG] [DG11] dual autopilots and hunting

[Derek - Raymarine - Moderator]

Hi shparrot

Thank you for your enquiry.

The advice you received was correct, only one system can be conncted to a rudder reference unit at a time, also make sure the system that is reconnected to the rudder reference unit is power cycled after the connection too. Unless the ACU is power cycled it will not recognise the rudder reference is connected.

The next issue is the positional instability, more guidance can be found here where the issue is most likely associated with rudder damping, which should be increased to 8 or 9 to stop the oscillation.

regards
Derek