Garmin GPSMAP 172C Owner's Manual - Page 85

NMEA Interface, Advanced NMEA Output Setup, To activate the NMEA data

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NMEA Interface If you are going to interface the GPSMAP 172/172C with another piece of equipment (such as a radio or autopilot), the unit needs to be set to output NMEA data. More information on wiring and NMEA data may be found on page 92. To activate the NMEA data: 1. On either port of the Comm Tab, highlight the 'Serial Data Format' field and press ENTER. 2. Select 'NMEA In/NMEA Out' and press ENTER. Advanced NMEA Output Setup The GPSMAP 172/172C NMEA data transmission can be customized to change the precision of the Lat/Lon minutes, set up the waypoint IDs, and keep the output rate at two seconds. If the unit is set up to output all of the available NMEA sentences, the output rate may exceed two seconds. The 'Advanced NMEA Output Setup' page allows you to turn on/off the GPS status (GSA. GSV), Waypoint/Route (WPL, RTE), and the Garmin Proprietary sentences. See page 92 for more information on wiring and NMEA data. Lat/Lon Minutes Precision allows you to adjust the number of digits to the right of the decimal point for transmission of NMEA Output, either 2, 3 or 4 digits. The Waypoint ID setting lets you choose to output the waypoint identifiers as names or numbers. To set up the Advanced NMEA page: 1. Highlight 'NMEA In/NMEA Out' in the Serial Data Format field, and press MENU. Select 'NMEA Setup' and press ENTER. 2. To change the settings, place the highlight over the desired field and press ENTER. Make a selection and press ENTER again to accept the selection. Reference Main Menu: Comm Tab Activating NMEA data 75

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Main Menu: Comm Tab
NMEA Interface
If you are going to interface the GPSMAP 172/172C with another piece of equipment (such as a
radio or autopilot), the unit needs to be set to output NMEA data. More information on wiring and
NMEA data may be found on page 92.
To activate the NMEA data:
1.
On either port of the Comm Tab, highlight the ‘Serial Data Format’ field and press
ENTER
.
2.
Select ‘NMEA In/NMEA Out’ and press
ENTER
.
Advanced NMEA Output Setup
The GPSMAP 172/172C NMEA data transmission can be customized to change the precision of the
Lat/Lon minutes, set up the waypoint IDs, and keep the output rate at two seconds. If the unit is set up
to output all of the available NMEA sentences, the output rate may exceed two seconds. The ‘Advanced
NMEA Output Setup’ page allows you to turn on/off the GPS status (GSA. GSV), Waypoint/Route
(WPL, RTE), and the Garmin Proprietary sentences. See page 92 for more information on wiring and
NMEA data.
Lat/Lon Minutes Precision allows you to adjust the number of digits to the right of the decimal
point for transmission of NMEA Output, either 2, 3 or 4 digits. The Waypoint ID setting lets you
choose to output the waypoint identifiers as names or numbers.
To set up the Advanced NMEA page:
1.
Highlight ‘NMEA In/NMEA Out’ in the Serial Data Format field, and press
MENU
. Select ‘NMEA
Setup’ and press
ENTER
.
2.
To change the settings, place the highlight over the desired field and press
ENTER
. Make a
selection and press
ENTER
again to accept the selection.
Activating NMEA data
¸¶
Reference