Chapter 4: Customising the System 47Proportional applies rudder in proportion to Joystick movement - thefurther the Joystick is held over the greater the applied rudder.Bang-Bang applies continuous rudder drive in the direction of levermovement. To improve control the speed of rudder movementchanges with the angle of the lever. For maximum speed push the leverhard over. If the lever is returned to the centre position the rudder willremain in its current position.Range: OFF1 = Proportional2 = Bang-bangDefault: OFFDrive TypeThe drive type controls the way which the autopilot drives the steeringsystem. The default setting should be retained for mechanically drivenvessels.Range: 1 = Mechanically driven vessels without a rudder reference unit2 = Hydraulic, no rudder reference unit3 = Linear, rotary and sterndrive with a rudder reference unit4 = Hydraulic with rudder reference unitDefault: for Pilot Type Displacement 3for Pilot Type Semi-Displacement 4for Pilot Type Planing 4for Pilot Type Sterndrive 3Rudder DampingSet this option only if your system includes a rudder reference unit, andthe drive hunts when trying to position the rudder.Test for this when your vessel is moored dockside, by pressing AUTOand then +10. If the helm overshoots and has to drive back, or starts tohunt back and forth, increase the damping level.Alternatively, you can set a value between 1 to 9. Adjust the dampingone level at a time, and always use the lowest acceptable value.Range: 1 to 9Default: 2
