Raymarine hsb2 - Appendix E:Connecting A Raytheon ST80 Active Compass for MARPA; Course Computer

Appendix E: Connecting A Raytheon ST80 Active Compass for MARPA E-1
Appendix E:
Connecting A
Raytheon ST80
Appendix E:Connecting A Raytheon ST80
Active Compass for MARPA
The performance of MARPA on the 10.4" LCD and 10" CRT radar displays is
dependent on the quality of your heading sensor and such data must be
provided on NMEA.
If you have an ST80 active (fluxgate) compass as part of an existing system on
SeaTalk, you should do the following when connecting it to your display:
• Rewire the compass to provide heading data on NMEA.
• Calibrate the compass manually; it is not possible to calibrate the compass
via the autopilot or ST80 system.
Note: If you are using a suitable third party, NMEA heading sensor refer to its
documentation for installation and calibration details. Connect such a com-
pass in a similar manner to the ST80 active compass, giving due consideration
to the power requirements.
The following sections provide configuration and connection details for three
typical Raytheon systems:
1. A course computer (software version 11 or above) on SeaTalk with an
ST80 active compass (which could be part of an ST80 system).
2. An ST4000 or 5000 autopilot and an ST80 active compass.
3. An ST80 system including an active compass, without a course computer.
If you require further assistance please contact your authorised Raytheon
dealer.
Course Computer
If you have a Raytheon course computer and active compass we recommend
that you configure your system as follows:
• Disconnect any compass directly connected to the course computer.
• Ensure the active compass is re-wired to provide heading data on NMEA.
• Power the active compass from the course computer.
• Connect the active compass to the NMEA input of the course computer
and to the NMEA input of your display as shown in the following illustra-
tion.
• Set Bridge NMEA Heading OFF in the display System Set Up menu.