Simrad Autopilot AP26 - Manual (Page 105)

Maintenance
20221586B
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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 45). However, viewing or changing
the parameters can be made from within the Parameters menu
item. See also “Recall Autotune” on page 107.
Proceed to the next menu item by pressing the STBD button, or
return to Standby mode by pressing the STBY button.
Transition Speed
The transition speed is the speed where the autopilot will
automatically change the steering parameter set from HI to LO
parameters, or vice versa (page 23).
The default setting of transition speed is 5 kts.
It is recommended that you set the transition speed to a speed
that represents the speed where the hull begins to plane, or the
speed where you change from slow to cruising speed.
The speed used for the automatic transition is obtained with the
following priority:
1. Speed through water from the speed log source.
2. Speed Over Ground (SOG) from the GPS/Chartplotter.
If no speed data is available, manual speed selection is required.
See also chapters 2.9 and 2.10.