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01/08/2020
It is important to realise that on any
vessel the ship’s compass can have
heading errors as a result of the
vessel’s magnetic signature. These
errors can be minimised by having
the ship’s compass swung and
compensated by a licensed compass
adjuster. In any case it is highly
unlikely that the ship’s compass and
autopilot compass will be congruent
for every heading.
If you are unsure of the success of
the calibration, you may return to the
factory calibration setting by doing the
following:
Auto must not be selected to reset
the compass calibration.
To reset calibration to factory
default:
•
Press MODE button nine times
• Display will read rStC
•
Press ◄ and ► together to reset
calibration to factory setting
Heading Sensitivity
The heading sensitivity adjusts the
angle the boat is allowed to move off
course before the autopilot reacts to
correct. This is sometimes referred to
as dead band.
A low sensitivity value will cause
the drive to operate with minimum
pulsing to position the rudder position
and the autopilot system may work
continuously (hunt).
A high sensitivity value the drive will
position the rudder with maximum
pulsing. The vessel’s course will
wander slightly.
To adjust sensitivity:
•
Press MODE button
•
Display will read S * * - present
setting (**) will be between
1 and 10
•
Press ► to increase setting
•
Press ◄ to decrease setting
• Display will revert to heading after
3 seconds has elapsed
Rudder Ratio
The rudder ratio varies the amount
of rudder angle which can be applied
for a given course error. This is
sometimes referred to as rudder
response.
A low rudder setting which is too low
will cause the boat to track in a slow
“ S ” motion, ie: understeer through
too little rudder applied.
When the rudder setting is too high,
vessel track will be a rapid “ S ” ie:
oversteer through too much rudder
applied.
To adjust rudder ratio:
•
Press MODE button twice
•
Display will read r * * - present
setting (**) will be between
1 and 10
•
Press ► to increase setting
•
Press ◄ to decrease setting
• Display will revert to heading after
3 seconds has elapsed.
