Operation | 17
Alternating rudder angle bargraph
If your autopilot is driving a Simrad
MSD50 Stern Drive, the rudder
angle display will after turn-on
alternate between 10 degrees port
and starboard to indicate that the
(rudder) zero point need be set.
Refer to page
118 to set the zero point.
No rudder angle bargraph
When the autopilot is operating on
Virtual Rudder Feedback (VRF), the
rudder angle bargraph is empty.
2.5 Automatic steering
AUTO (Compass) mode
When the AUTO key is pressed, the AP28 automatically
selects the current boat heading as the set course and
maintains the rudder angle. This gives a bumpless
transfer at the mode change.
• Automatic steering mode
• Set course: 340 degrees
• Compass reading: 339°M
• Heading source: RC42
• Rudder angle: 01° to
starboard
• Speed: 12.8 kn (from log)
• Steering parameter set: LO-A
(Low automatic)