14 ST600R Autopilot Control UnitChapter 3: Advanced OperationThis chapter provides information on:• Operation in Track mode• Operation in Vane mode (WindTrim)• Adjusting response and rudder gain• Alarms3.1 Operation in Track ModeTrack mode is used to maintain a track between two waypointscreated on a GPS, Decca, or Loran navigation system. The autopilotwill then compute any course changes to keep your boat on track,automatically compensating for tidal streams and leeway.The autopilot can receive cross track error (the distance your vesselis from a planned track) from a SeaTalk navigation instrument orchartplotterTrack mode is selected by pressing the TRACK key, but can only beselected in Auto mode. You can return to either Auto or Standbyfrom Track as follows:• Press AUTO to leave Track mode and return to Auto mode.• Press STANDBY to leave Track mode and return to manualsteering.Initiating Track ModeWhen initiating Track mode, the track can be acquired in one of twoways:• Automatic acquisition – when cross track error and bearing towaypoint data are available• Manual acquisition – when cross track error is the only availabledata
