3-3-6 Section 3: Using Analog Instruments
ST290 Instrument System Owner’s Handbook
Figure 3-6: Auto lock indications
Whenever the autopilot is engaged, the heading set by the autopilot is
displayed on the digital display and the analogue pointer displays the
autopilot’s course error.
Note: In Auto mode, all ST290 Compass instrument button functions, ex-
cept illumination, are disabled.
Operating hints
Steering sense
When the analogue pointer indicates an off course error, steer the vessel
in the direction you want the pointer to move.
Man overboard/reciprocal course
When the ST290 Compass instrument is in lock mode and the vessel is
turned through 110° or more, the ST290 Compass instrument
automaticallylocks to the reciprocal of theoriginal course (180° from the
original). The digital display shows the reciprocal course and the pointer
shows the course error from the reciprocal course.
The reciprocal course function is reversible, so that a second similar turn
would lock onto the original locked course.
Note: The Man overboard/reciprocal course feature is not available
when operating in Auto mode.
D5890-1
81183_2 S3.book Page 6 Tuesday, May 6, 2003 8:41 AM
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