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Simrad AP25 Autopilot
122 20221495F
Recommended speed during Automatic tuning varies with the
type of boat, but should not exceed 10 knots. It should be
performed in calm or moderate sea conditions.
Note ! Automatic tuning should not be performed at planing speed or in
following seas!
For displacement boats use a speed that is approximately half the
normal cruising speed (i.e. if cruising speed is 10 knots, perform
the Automatic tuning at about 5 knots).
The parameter values calculated during Automatic tuning
becomes the HI parameters. The LO parameters are
automatically set to 66% of the HI.
It also is recommended to perform the Automatic tuning steering
East or West, as this will yield the best balanced parameters.
Note ! After the Automatic tuning has been completed the rudder must
be controlled manually, as the autopilot has returned to STBY
mode.
Caution ! The Automatic tuning function will take control of the boat
and perform a number of S-turns. It must always be performed
in open waters at a safe distance from other traffic. The
Automatic tuning function may take from 1 to 2 minutes to
complete. To stop the Automatic tuning, press the STBY
button.
Activate the Automatic
tuning, by rotating the course
knob clockwise. The display
will flash “Automatic tuning”.
After an Automatic tuning, there should be no need for further
adjustments. “Fine tuning” of these parameters are made by the
response control (see page
56). However, viewing or changing
the parameters can be made from within the Parameter menu
item. See also “Recall Autotune” on page
128.
Proceed to the next menu item by pressing the STBD button, or
return to Standby mode by pressing the STBY button.