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Autopilot | NSS Installation Manual
control head, refer to the AP24 Operator manual (part no 20222535) or the AP28 Operator
manual (part no 20222527).
If you connect the NSS to an already commissioned autopilot system, you only have to do an
automatic source selection as described above before the autopilot is ready to be used.
Dockside setup
Initiating the required dockside setup is done from within the Commissioning dialog. Com-
pleted procedures are labelled with a tick.
When the autopilot computer is delivered from factory AND ANY TIME AFTER AN AUTOPILOT
RESET HAS BEEN PERFORMED, you will have to run a complete setup again.
All steps in all commissioning procedures are clearly described on-screen, and you will be
guided step by step through the process.
1.
Press the STBY/AUTO key to ensure that the autopilot is in standby mode
2. Activate the autopilot commissioning dialog as shown above
3. Select boat type
The boat type setting is used by the system to select appropriate preset steering parameters.
It will also a ect available autopilot features.
4.
Perform the rudder calibration
Used if you have a rudder feedback unit installed. This calibration is used to ensure that the
physical rudder movement corresponds to the rudder angle displayed on the NSO unit.
VRF (Virtual Rudder Feedback) calibration:
The Virtual Feedback option enables your autopilot to steer without a conventional rudder
feedback unit. This function is designed for vessels up to 40 ft. powered by outboard or stern
drives only.
The Virtual Feedback option will only be available when there is no feedback unit connected
at  rst time turn on or at turn on after an autopilot reset.
Note: Installing a feedback unit will enhance the performance of the autopilot and provide an
accurate rudder angle indicator on the autopilot display. Unless impractical or impossible, a
rudder feedback unit should be installed.
5.
Set the drive voltage
Refer to the drive unit table in the AC12/AC42 Installation manual or to your drive unit docu-
mentation for information.
6.
Run the rudder test as described in the on-screen instructions
Note: If the boat uses power assisted steering, it is important that the engine or electric mo-
tor used to enable the power assist steering is turned on prior to this test.
Stand CLEAR of the wheel and do not attempt to take manual control of the wheel
during this test!
When this test is started the autopilot computer will issue a series of PORT and STBD rudder
commands and automatically verify correct rudder direction. It detects minimum power to
drive the rudder and reduces the rudder speed if it exceeds the maximum preferred speed
(8°/sec.) for autopilot operation. The system will also detect whether the drive unit is a revers-
ible motor or if a solenoid valve is operated.
44


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