Garmin 190-00683-00 Manuale Utente

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.

1.  Highlight the

Setup tab on the Main Menu.

2.  Select the

Interface sub tab.

3.  Highlight the

Serial Data Format field, 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.

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

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