Raymarine ST4000+ - Page 24

16 ST4000+ Wheel & Tiller Autopilots: Owner’s Handbook
3 Advanced Operation
Automatic track acquisition
If cross track error and bearing to waypoint information are both
available (via SeaTalk or NMEA), the autopilot can acquire a track
automatically:
1. Bring the boat within 0.1 nm of track.
2. Press auto. The autopilot will display the current locked heading.
3. Press track to enter Track mode.
4. Wait for the Waypoint Advance alarm to sound. The display will
show the bearing to the next planned waypoint and the direction
the boat will turn to reach this waypoint.
Note: If the boat is more than 0.3 nm from the track, the Large Cross
Track Error alarm will sound (see page 17). Press standby to
cancel the alarm, hand steer closer to the track, press auto and then
press track.
5. Check that it is safe to turn the boat onto the new course.
6. Press the track key:
• the boat will turn onto the new course
• the display shows the new bearing to waypoint
Manual track acquisition
If your navigation system only provides cross track error information,
you must acquire the track manually:
Current
heading
Previous
heading
D5414-3
Waypoint at 270˚ Waypoint at 270˚
From auto mode, press track to enter Track mode . . . . . . then press track again to turn boat to waypoint.
Automatic track acquisition
81131_7.book Page 16 Wednesday, March 17, 2004 3:59 PM