Simrad Robertson AP9 Mk3, Instruction Manual, Page: 131 / 202

Installation
20169223D
5-41
Service Speed
I I I I I I
SERV. SP.
The software includes a variable rudder gain, controlled by the VTG
input signal from the GPS. The service speed is used to reference the
scaling of the rudder gain set by the SPEED SENS. Note that the
software will read the VTG speed sentence from the GPS in all
modes, (not only NAV). The speed signal is also used to control
RADIUS turns.
Range:
3-70 knots
Speed Sens
I I I I I I I I
SPEED SENS
This feature allows for an adjustable relation between selected speed
(service speed) rudder gain and low speed rudder gain. When the
VTG sentence from the GPS is received, the amount of rudder (gain)
when running with low speed is adjusted by the speed sens
(Increase/Decrease) until best steering is obtained. The amount of
rudder will hence be determined by the actual vessel speed within
the low speed and full speed range.
Change of speed will now automatically adjust the rudder gain in a
linear matter between “low speed gain” and “high speed gain”.
Range:
OFF – 1.92
Minimum Radius
I I I I I I
MIN. RADIUS
This parameter determines the minimum turning circle (or maximum
turn rate). The maximum turn rate or minimum radius is
automatically calculated by entering the minimum radius value in
nautical mile. Once set it is not possible to exceed those limits in the
1
st Info-loop (TURN RATE or RADIUS).
Range: 0,01 – 1,1 nautical mile.