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SSC300 User's Manual
$PMAREXE,SSC300,,5D,0,<variation>,,
Where <variation> is the magnetic variation in units of degrees and resolution in tenth of degrees –
positive values represent easterly variation, and negative values represent westerly variation.
For example, to program the SSC300 with 18.0° easterly magnetic variation, as might be seen in Seattle,
WA, USA, type the sentence:
$PMAREXE,SSC300,,5D,0,18.0,,
To program the SSC300 with 5.5° westerly magnetic variation, as might be seen on the east coast of
Florida, USA, type the sentence:
$PMAREXE,SSC300,,5D,0,-5.5,,
5. The SSC300 should now be transmitting true heading data. Examine the NMEA 0183 sentences coming
from the SSC300 or check the heading indication on the system connected to the NMEA 0183 output of
the SSC300 for true heading data.
Page D2
Appendix D – Transmitting True Heading Data
Revision 1.0
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