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Software setup | NSO evo2 Installation Manual
3. Select the boat type
• The boat type setting is used by the system to select appropriate preset steering parameters.
It will also aff 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 evo2 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 fi rst time turn on, or at turn on after an autopilot reset.
¼ 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.
¼ Note: The rudder ‘max starboard’ and ‘max port’ steps can be skipped using ‘cancel’ if only
the rudder center position needs to be adjusted.
5. Set the drive voltage
• Refer to your drive unit documentation for information.
6. Run the rudder test as described in the on-screen instructions
¼ 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 dur-
ing 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 angle if boat turning exceeds the maximum
preferred speed (8°/sec.) for autopilot operation. The system will also detect whether the
drive unit is a reversible motor or if a solenoid valve is operated.
Rudder drive setup
The rudder drive setup controls how the autopilot computer controls the steering system.
Drive voltage
Voltage specifi ed for your drive unit.
The Drive unit voltage setting does not apply when the system operates solenoids on a
continuous running pump/steering gear. Hence, the output voltage to the solenoids will be
the same as the input voltage.
Refer to your drive unit documentation for information.
!
Warning: Selection of improper voltage level for your drive unit may damage both the
drive unit and the Autopilot computer even if the protection circuits are activated.
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