Garmin GPS 72 Owner's Manual - Page 49

Setup Menu - 'Interface' Tab The Interface Tab contains one field, 'Serial Data Format'. This field contains eight settings that allow the GPS 72 to communicate with computer software and other electronic devices. • GARMIN - Allows the GPS 72 to communicate with GARMIN software and other GARMIN GPS units. • GARMIN DGPS - Allows the GPS 72 to communicate with GARMIN Differential Correction devices. The unit can have the beacon receiver scan for an available DGPS beacon or can tune the beacon receiver to the frequency and bit rate of a nearby DGPS beacon. • NMEA - Causes the unit to transmit NMEA 0183, version 2.3 data. It also allows the GPS 72 to accept NMEA data from another NMEA device, like a echo sounder. The baud (speed of communication in bits per second) is displayed in the Baud field. • Text Out - Allows the GPS 72 to output simple text data that includes, date, time, position, and velocity information. The Baud can be set to 1200, 2400, 4800, or 9600 bps. • RTCM In - Allows the GPS 72 to accept DGPS information from a device supplying RTCM data in a SC-104 format. The Baud can be set to 1200, 2400, 4800, or 9600 bps. • RTCM In/NMEA Out - Functions the same as the 'GARMIN DGPS' setting except, the unit will output NMEA 0183, version 2.3 sentences, GPRMC, GPGGA, GPGSA, GPGSV, GPGLL, GPBOD, GPRTE, and GPWPL. • RTCM In/Text Out - The same as the 'RTCM In' setting except, the unit will output simple text data that includes date, time, position, and velocity information. The Baud can be set to 1200, 2400, 4800, or 9600 bps. • None - Turns off all serial communication. InRterofedruecntcioen Main Menu Setup Menu - Interface Tab When any NMEA output is selected, the NMEA data transmission can be customized to keep the update rate at two seconds. With an NMEA output selected, press MENU and select 'Setup NMEA Output' to show the setup window. You can set the precision of the location, control how waypoints are identifed, and enable/disable selected NMEA sentences. To change a setting, highlight the field and press ENTER. Make your selection, press ENTER again to accept the selection. To check/uncheck a box, highlight the box and press ENTER. NMEA Sentence Output (NMEA 2.3 compliant) Always transmitted: GPRMC, GPGGA, GPGL, GPBWC, GPVTG, GPXTE, GPRMB Switchable: GPGSA, GPGSV, GPWPL, GPRTE Garmin proprietary: PGRME, PGRMZ, PGRMM 47