46 ST4000 Plus Wheel & Tiller Autopilots Owner’s Handbook
Set AutoAdapt to N in the northern hemisphere, or S in the southern
hemisphere. You then need to enter your current latitude in the next
setup screen, so that the ST4000 Plus can provide accurate course
keeping by automatically adjusting the rudder gain depending on the
heading.
Lat i t ude
Use the -1, +1, -10 and +10 keys to set the value to your vesselís
current latitude, to the nearest degree.
Note: If valid latitude data is available via SeaTalk, it will be used
instead of this calibration value.
Rudder damping
You only need to set this option if your system includes a rudder
reference unit, and the drive ìhuntsî when trying to position the rudder.
Test for this when your vessel is moored dockside, by pressing auto
and then +10 . If the helm overshoots and has to drive back or starts to
hunt back and forth, you need to increase the damping level.
In auto damping mode (A), the ST4000 Plus applies damping
compensation derived from auto dockside (if it has been carried out).
Alternatively, you can set a value in the range 1 to 9. Adjust the
damping one level at a time, and always use the lowest acceptable
value.
Cr ui se sp e e d
If boat speed is not available via SeaTalk or NMEA, the cruise speed
should be set to the boats normal cruising speed ñ SeaTalk boat speed is
used in preference to SOG.
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