Simrad AP25 - Manual (Page 104)

Simrad AP25 Autopilot
102
20221495F
Confirm Rudder feedback
calibration to STBD by turning
the course knob clockwise.
Manually turn the helm to
starboard until the rudder stops at
starboard lock (H.O.).
The value on the display is the
angle read by the rudder feedback
unit before any adjustment is
made. If the actual rudder angle is
different from that of the display,
correct the reading by turning the
course knob clockwise to increase
the value or counter clockwise to
decrease the value. See note.
Advance to the next step by pressing the STBD button.
Manually turn the helm to port until the rudder stops at
maximum port rudder.
Adjust the displayed angle the same way as for starboard rudder.
Note ! Many boats have ±45° (90° H.O. - H.O.) rudder angle as
standard. So if you are not making any adjustment to the display
readout (i.e. not turning the course knob), the AP25 will set a
(default) value of 45° to each side. However, you should always
simulate an adjustment by turning the course knob clockwise
and then back again. This is necessary to prevent the rudder
from hitting the end stops.
Rudder zero may still be inaccurate and should be adjusted later
during sea trial.
Proceed to next menu item by pressing STBD button.