Raymarine Autohelm ST 30 - Manual (Page 20)

Chapter 3: Calibration 17
Chapter 3: Calibration
3.1 About this Chapter
Before the ST30 Compass system can be used as a navigational aid, the
fluxgate compass MUST be linearised to compensate for deviation and the
displayed heading MUST be aligned to a known transit bearing.
Other calibration features allow you to adjust the speed at which the
heading and heading error displays are updated.
3.2 User Calibration
User calibration contains features to perform compass linearisation and
heading alignment.
Manual Compass Linearisation
For first-time installation, the fluxgate compass must be manually
linearised to compensate for deviation.
1. Press and LOCK together for 2 seconds to open the initial
calibration menu.
Cal
LOCK
COMPASS
LOCK
HEADING
AVERAGE
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