Seiwa SW AP01 - Manual (Page 23)

The use of each menu item is described in the following pages.
BACKLIGHT The backlight for the display can be set to 4 different brightness
levels. Use the arrow keys to adjust.
CONTROL MODE The system is preset to the AUTOTUNE mode, but may be
changed to operate with fixed tuning. Use the arrow keys to select
between the following:
AUTO TUNE
When selected, no further adjustment should be needed during use.
However, there may be situations where you wish to operate with
fixed tuning and the following manual choices may be selected.
NORMAL
Direct proportional control with a counter-rudder component that be
adjusted from the menu (see below). More information on manual
settings is given in Sec 2.7.
ROUGH
This suits most vessels in heavy conditions. The control has a
deadband which permits a 5 deg yaw about the reference course
before correction is applied. Outside this window, the control is as
for the Normal mode. Rudder activity and power consumption are
therefore kept to a minimum.
RUDDER FACTOR This may be increased or reduced using the arrow keys. In the
auto-tune mode, this value is the ‘starting point’ which applied
when the pilot key is pressed. As the vessel travels, the effective
rudder factor is internally adjusted above or below this point. In the
two Manual modes, this setting becomes the fixed rudder factor.
There is more about the rudder factor in Sec 2.7.
RATE FACTOR The RATE FACTOR controls the amount of counter rudder applied
in all control modes. Guidelines for setting it are given in Sect 2.7.
HEADING CONTROL GROUP
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