Chapter 5: Customising theST4000 Plus 43Rudder gainThis is the ìpower-onî rudder gain setting, and should be adjusted tothe setting that gives the best steering performance as described inChapter 7, Post Installation Procedures.ResponseThis is the power-on response setting. The response level can bechanged during normal operation (see section 3.3) or via the ResponseData Page, if this is set for display (see section 2.5).Turn limitThis limits the rate of turn of your vessel when under autopilot control.The value must be within the range 5 to 20∞. For sailboat applications itshould be set to 20∞.Align rudder (Rudder Offset)You only need to set this option if your system includes a rudderreference unit.ï Manually place the helm in a central position. The reported rudderangle is indicated on the rudder bar graphic at the bottom of thescreen.ï Adjust the offset value, using the +1 and -1 keys, until the rudderposition is shown as central on the rudder bar. The offset must bewithin the range -7 to +7.Off course alarmThis is the off course alarm angle. It controls the alarm that warns you ifthe autopilot is unable to maintain its set course. The alarm operates ifthe autopilot strays off course by more than the alarm angle limit formore the 20 seconds.The value must be within the range 15 to 40∞, and can be adjusted in 1∞steps.
