Garmin Marine GPS System GPSMAP User Manual

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Advanced NMEA Output Setup
If you are going to interface the GPSMAP 378/478 with another
piece of equipment (such as a radar or autopilot), the unit needs
to be set to output NMEA data. The NMEA data transmission can
be customized to keep the output rate at two seconds. If too many
NMEA sentences are activated, the unit might take longer than two
seconds to update.
You can also set the Output Rate to Fast to output a minimum
number of NMEA sentences at one-second intervals.
To access the Advanced NMEA Output Setup:
1. Highlight the Setup tab on the Main Menu.
2. Select the Interface sub tab.
3. Highlight the Serial Data Format eld, and press ENTER.
4. Select NMEA In/NMEA Out, and press ENTER.
5. Press MENU to open the options menu. Select Advanced
NMEA Setup, and press ENTER.
Advanced NMEA Output Setup
Use the Advanced NMEA Output Setup Page to set the output rate,
change the precision of the Lat/Lon minutes, set Waypoint IDs to
names or numbers, and turn on and off the GPS status, the Garmin
Proprietary sentences, and Waypoint/Route (WPL, RTE).
GPSMAP 378/478 NMEA Sentence Output (NMEA version 3.01
compliant):
• Always transmitted: GPRMC, GPGGA, GPGLL, GPBWC,
GPVTG, GPXTE, GPRMB
• Switchable sentences: GPGSA, GPGSV, GPWPL, GPRTE
• Garmin proprietary: PGRME, PGRMZ, PGRMM
94 GPSMAP 378/478 Owner’s Manual
MAIn Menu > setuP tAb

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