Garmin gpsmap76c Manuale Utente

IMPORTANT NOTE:

When the USB cable is con-
nected to the GPS map 76C, it 
is automatically detected and 
communicates only in Garmin 
Format. When the USB is con-
nected, Garmin format will not 
communicate through the Serial 
connection, while all other 
formats can be used by the 
Serial connection with the USB 
still connected.

RTCM In - Provides DGPS input using a standard RTCM SC-104 
format. No output.
RTCM In/NMEA Out - Allows DGPS input using a standard RTCM 
SC-104 format and supports the output of standard NMEA 0183 ver-
sion 3.01 data.
RTCM In/Text Out - Allows DGPS input using a standard RTCM 
SC-104 format and supports the output of simple ASCII text output of 
location and velocity information
None - Provides no interfacing capabilities.

1.  Access the Interface Setup Page as explained at the beginning 

of this section.

2.  Highlight the desired setting and press ENTER.
3. When you select Text Out and /or RTCM In, additional fi elds will 

appear. Use the ROCKER key to highlight “Baud Rate” and 
press ENTER. Use the ROCKER key to highlight the desired 
setting and press ENTER.

4. For Garmin DGPS or RTCM In/NMEA Out, use the ROCKER key 

to highlight “Beacon” and press ENTER. Use the ROCKER key 
to select “Scan” or “User” and press ENTER.

   If “Scan” is selected, the GPSMap 76C will automatically direct 

the beacon receiver to scan for available beacon transmitters.

   If “User” is selected, select the “Freq” and “Bit Rate” fi elds and 

enter the appropriate settings. The beacon status, signal-to-noise 
ratio and distance to beacon are displayed in the bottom of the page. 

Data Format Page for 

GARMIN DGPS

Data Format Page for: 

NMEA In/NMEA Out

Text Out
RTCM In

RTCM In/Text Out

Data Format Page for 

RTCM In/NMEA Out

GPSmap 76C Owner's Guide copy.indd   49

3/25/2004, 11:30:42 AM