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58 Magellan MAP 410 GPS Receiver
NMEA DATA MESSAGES
Your GPS receiver can be set to output GPS data in the NMEA 0183 version 1.5 or
version 2.1 format to interface with other marine devices or equipment.
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. The
baud rate can also be set to 1200, 9600 or 19200.
There are several NMEA output message sets, each with a slightly different applica-
tion. Check documentation for your external equipment to choose the appropriate
message set.
SET OUTPUT/USAGE
V1.5.APA BWC, APA, GLL, VTG
Remote displays, version 1.5 marine autopilots
V1.5 XTE XTE, BWC, GLL, VTG
Version 1.5 Marine autopilots
V2.1 GSA GSA, GSV, GLL, GGA, RMB, RMC, APB, and autopilots.
Vers. 2.1 NMEA recommended navigation data, satellite data
and autopilots.
NMEA Message Definitions
APA Autopilot cross track error, direction to steer, status of GPS, route status,
destination waypoint name, and bearing from origin to destination (old
format).
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).
BWC Range and bearing to a waypoint.
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.
VTG Track (magnetic and true) and groundspeed (knots and KPH).