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Simrad AP21 User Manual

Simrad AP21
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Installation
20220596G 103
The automatic calibration obtained by the compass is not
correct, and may be due to a large magnetic influence near the
compass (a relocation may be needed) or too much waves
during calibration.
Proceed to the AUTOTUNE function by pressing the STBD [>]
button, or return to STBY mode.
Automatic tuning
Automatic
tuning
AUTOTUNE is a dynamic function that enables the autopilot
system to automatically set up the two main steering parameters
(Rudder, Counter Rudder) for the boat. The scaling factors of the
parameters are also set automatically as a function of the boat
type selection performed in the Dockside menu.
Note ! Autotune is an optional procedure that is not required for the
autopilot to function. The autopilot is preset with steering
parameters that should steer most boats in the 30 - 80 foot range
and Autotune is not needed if the preset parameters steer your
boat satisfactory.
Recommended speed during Autotune varies with the type of
boat, but should not exceed 10 knots. Autotune should not be
performed at planing speed!
For displacement boats use a speed that is approximately half the
normal cruising speed (i.e. if cruising speed is 10 knots, do the
Autotune at about 5 knots).
The parameter values calculated during Autotune becomes the
LO speed parameters. The HI speed parameters are automatically
set to 66% of the LO.
If possible it is recommended to perform the Autotune steering
East or West, as this will yield the best balanced parameters.
WARNING ! The Autotune function will take control of the boat and
perform a number of S-turns. It must always be performed
in open waters with sufficient safe distance to other traffic.
The Autotune function may take from 1 to 2 minutes to
complete.

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Simrad AP21 Specifications

General IconGeneral
BrandSimrad
ModelAP21
CategoryMarine Equipment
LanguageEnglish

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