TracVision M9 User Manual page 68

Recalibrate the System
1. Select a calm day and a clear area. Excessive pitching
and rolling can distort calibration data.
2. Apply power to the TracVision system.
3. Write down your approximate heading. You will use
this information later in this procedure.
4. Steer the vessel at a slow, steady pace through a full
circle that takes at least two minutes to complete. Use
the heading information that you recorded earlier to
confirm that you completed a full circle (see
Figure
Figure D-3 Timing the Calibration Circle
30 Seconds
D-3).
2 Minutes
1 Minute,
1 Minute
TracVision M9 User's Guide
Appendix D - Recalibration
30 Seconds
77