Sitex SP38 Autopilot, Installation And Operation Manual

Page: 93 / 162

Sitex SP38 Installation and Operation Basic Operation
Document PN 29010101 V2r0
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Notes on AUTO Mode
If you need to, you can quickly “dodge” around obstacles, and automatically
return to your original Commanded Heading when the boat is clear of the obstacle, without having to turn the
COURSE CHANGE knob. See the Dodge and Jog Steering Turns section for more information.
You can limit the maximum amount of rudder travel in AUTO mode by turning on the Auto/Nav rudder
limits. Turning them on, and adjusting them to suit, is done in the Power Steer menu.
The autopilot has an automatic Off-Course Alarm that will be activated should the boat fall off the
Commanded Heading by more than 20°. There is a 30 second delay on this alarm.
.
Auto Menu displayed
by double-press the
red Auto button
LEVEL 1 LEVEL 2
LEVEL 3
Rudder Gain
Counter Rudder
Seastate
Turn Rate Limit
Parameter Set
Seed Trip Point
Speed Source
ALC
Trim Start Pos.
Gain 1-10
Gain 1-10
Auto & 1-10
0.1-10
Auto, Hi & Low
Speed Trip Point
N2000, Nav1 & Nav2
On or Off
Actual or Midship
Hi & Lo Speed Rudder Gain
Counter Rudder is a measure of how much rudder is applied for a given rate of change in
course error. If the course error is increasing, the counter rudder adds to the rudder
correction, and if the course error is decreasing, the counter rudder subtracts from the rudder
correction applied.
Figure 44 - Typical Auto Menu Screen