Magellan GPS 310 User Manual download pdf (Page 40)

NMEA Data Messages

NMEA DATA MESSAGES. NMEA data is output at 4800

baud, 8, N, 1, checksum off. These settings are acceptable to

most equipment and software applications.

Your GPS receiver outputs the following NMEA 0183 version

2.1 messages.

GSA, GSV, GLL, GGA, RMB, RMC and APB.

Vers. 2.1 NMEA is recommended for navigation data,

satellite data and autopilots.

NMEA Message Definitions

APB Revised autopilot message contains all of the above plus:

heading to steer toward destination, bearing from the

present position to the destination (magnetic or true).

GGA GPS position, time, fix quality, number of satellites used,

HDOP (Horizontal Dilution of Precision), differential

reference information, and age.

GLL GPS-derived latitude, longitude, and time of fix.

GSA GPS receiver operating mode, satellites used in the

navigation solution reported by the $--GGA sentence and

DOP (Dilution of Precision) values.

GSV Number of satellites in view, satellite numbers, elevation,

azimuth, and SNR value.

RMB Data status, cross track error, direction to steer, origin,

destination landmark, landmark location, bearing to

destination, and velocity toward the destination.

RMC Time, latitude, longitude, speed, heading, and date.

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Magellan GPS 310 User Manual Page 40