Airmar LB150 - Manual (Page 34)

LB150 WeatherStation Technical Manual revision 0.013
Proprietary and Confidential
PRELIMINARY - DRAFT 31
_ NMEA 0183 RECEIVED SENTENCE _
$--
HDG
Summary
NMEA 0183 standard Heading, Deviation and Variation.
Syntax
$--HDG,<1>,<2>,<3>,<4>,<5>*hh<CR><LF>
Fields
<1> Magnetic sensor heading, degrees.
<2> Magnetic deviation, degrees east or west.
<3> E if field <2> is degrees East
W if field <2> is degrees West
<4> Magnetic variation, degrees east or west.
<5> E if field <4> is degrees East
W if field <4> is degrees West
Notes
See section 2.2.1. for precedence rules regarding data received via this sentence.