62 ST600R Autopilot Control UnitOperating SenseThe operating sense defines the direction the helm will be appliedwhen a course change key is pressed or the vessel goes off course.Check the operating sense as follows:1. Press AUTO.2. Press the +10 key. The helm should move to produce a turn tostarboard.+10Operating SenseSTDBY3. If the helm produces a turn to port, reverse the motor connections atthe course computer.4. If the helm overshoots and has to drive back or starts to hunt backand forth, you need to increase the Rudder Damping option inDealer Setup (see Chapter 5).Navigation Interface (GPS, Decca, Loran)If the course computer is interfaced to a navigator, via an NMEAdata port, the interface can be checked by displaying the Data Pages.Press to display the first chapter heading. After 2 seconds, thefirst data page in this chapter is displayed. Press to check eachsuccessive page.If dashes are displayed instead of data values, the cause could be oneor more of the following:• A cabling error. Check for an open circuit, short circuit or reversedwires.• The navigator is not configured to transmit the required data format.• The signals being received by the navigator are too weak for reliablenavigation. Refer to the navigator handbook for further action.
