Simrad Robertson AP9 Mk3, Instruction Manual, Page: 121 / 202

Installation
20169223D
5-31
gain. With MIN. THRUST, the gain of the analogue signal equals the
RUDDER setting. By this combination it is possible to operate the
rudder with one set of parameters and at the same time have
different settings of the above mentioned parameters. Whenever the
parameters are set or changed, they are stored.
Parameter 2 option
This parameter is entered by selection “Only Rudder” when the
options “Only Thruster”, “Thruster”, “Only Rudder”, is
shown in the Thruster Function selection. Ref. page 2-14.
The parameter allows for a second set of parameters to be stored and
recalled whenever this mode is entered, hence the parameters for i.e.
high speed or low speed or i.e. loaded-unloaded may be selected by
flipping a switch. The connection is shown below.
11
13
J/P4
Open = Normal parameter settings
(Parameter 1)
Closed = Parameter 2
AP9 MK3
CONTROL
UNIT
5.16 Connection to Navigational Receiver
The output from the navigational receiver is connected to AP9 MK3
J4 pin 9/10 (see Fig. 5-38.). The AP9 MK3 accepts signals of NMEA
0180/0183 format, with Baud rate of 4800 baud and standard polarity
(Standard polarity: Logic "0"= 5V (20mA)). Correct NMEA format,
baud rate and current loop polarity are found in the navigational
receiver manual.
The NMEA 0183 format accepts different sentences. See Technical
specifications, page 4-1.
For receivers with NMEA 0183 format that outputs both the cross
track error and the course to steer type of nav. information, the
autopilot displays the type of information selected from the INFO-
function (NAV. TYPE). When radius steering is selected, the VTG
sentence must be included.
AP9 MK3
CONTROL UNIT
Lo
Hi
9
10
J4
NAVIGATIONAL
RECEIVER
Lo
Hi
Fig. 5-38
Navigational receiver connection