Raytheon Standard 22 Compact Operator's Manual page 16

Operator Manual
Compass Standard 22
and
Standard 22 Compact
Voltage is supplied to the gyro compass via the Distribution Unit or is directly connected
to the compass itself.
There are separate manuals for the Operator Unit and for the Distribution Unit.
The Quick Settling function is activated via the Operator Unit.
The automatic Speed Error Correction function is available only when a GPS
(NMEA speed and NMEA position) or Pulse Log and a NMEA position is connected.
The relevant data must be supplied via the Distribution Unit.
Manual Speed Error Correction (SEC) is applicable by manual input of speed and
position at an Operator Unit.
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4201.DOC010102 Edition: February 2015