Magellan GPS 315 User Manual - Page 60

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 application. 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 GGA GLL GSA GSV RMB RMC VTG Range and bearing to a waypoint. GPS position, time, fix quality, number of satellites used, HDOP (Horizontal Dilution of Precision), differential reference information, and age. GPS-derived latitude, longitude, and time of fix. GPS receiver operating mode, satellites used in the navigation solution reported by the $--GGA sentence and DOP (Dilution of Precision) values. Number of satellites in view, satellite numbers, elevation, azimuth, and SNR value. Data status, cross track error, direction to steer, origin, destination landmark, landmark location, bearing to destination, and velocity toward the destination. Time, latitude, longitude, speed, heading, and date. Track (magnetic and true) and groundspeed (knots and KPH). 52 Magellan GPS 315/GPS 320