8-5-12 Section 8: Autopilots
ST290 Instrument System Owner’s Handbook
Counter rudder
Use theCOUNTER RUDDER screen toset therequired counterruddervalue.
Counter rudder is the amount of rudder the autopilot applies, to control
the yaw of the boat. Higher counter rudder settings result in more rudder
being applied. The default rudder gain is set during the initial seatrial.
To adjust the counter rudder:
Note: Counter rudder on 150G and 400G autopilots is adjusted automat-
ically during the AutoLearn process. Manual adjustment of Counter rud-
der is required for T150 and T400 autopilots (see Section 8, Chapter 4).
Rudder damping
If the autopilot ‘hunts’ when trying to position the rudder (see Section 8,
Chapter 4), adjust the rudder damping value by using the RUDDER
DAMPING screen to set a different value. Increasing the rudder damping
value reduces hunting.
To adjust the rudder damping:
1. Use the button to scroll to the
COUNTER RUDDER screen.
2. Use the or button to adjust the
counter rudder level The adjustment
can be made from 1 to 9.
3. To move to the next setting press the
button, or to leave the current cali-
bration chapter and save all setting
changes, press the button.
1. Use the button to scroll to the RUD-
DER DAMPING page.
2. Use the or button to select the
required value. The adjustment can be
made from 1 to 9.
3. To move to the next setting press the
button, or to leave the current cali-
bration chapter and save all setting
changes, press the button.
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81183_2 S8.book Page 12 Tuesday, May 6, 2003 9:08 AM
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