Heading And Position Data - Raymarine hsb2 PLUS Series Owner's Handbook Manual

Chapter 1: Overview 1-9

Heading and Position Data

Full functionality of the radar/chartplotter is achieved when it is part of an
integrated system with other equipment (in addition to another unit)
hsb 2
connected via SeaTalk or NMEA 0183. Data from this equipment including
position and heading is shown on the display and is used in calculations.
Details on connecting other equipment are given in Chapter 8.
Providing Heading Data for Radar/Chart Overlay and MARPA
The performance of MARPA and Radar/Chart Overlay is dependent on the
quality of your heading sensor. It is important that both the heading sensor and
the radar scanner (bearing alignment) are correctly calibrated. Refer to the
appropriate heading sensor handbooks for calibration details. The better the
accuracy of your heading data, the better the performance of MARPA and
Radar/Chart Overlay.
A gyro compass provides the best performance in all conditions. Alternatively
you could use a fluxgate compass with rate gyro stabilization.
MARPA requires heading data to be frequently updated (i.e a minimum data
output rate of 8 Hz); heading data must therefore be provided on NMEA.
Good results are obtained with a Raymarine autopilot system incorporating a
150G or 400G Course Computer with internal rate gyro.
The Raymarine ST80 Active (fluxgate) Compass connected on NMEA
should provide satisfactory results in reasonable sea states.
Contact Raymarine Customer Services or your authorized Raymarine dealer
for additional information. For specific configuration and calibration details
with the Raymarine course computer and ST80 active compass refer to
Appendix E. If you are using a suitable third party heading sensor, refer to its
documentation for installation and calibration details; connect such a compass
in a similar manner to the ST80 active compass, giving due consideration to
the power requirements.