Setup Tab - Garmin GPSMAP GPSMAP 196 Pilot's Manual & Reference

Main Menu
Setup Tab: Interface
An 'Advanced NMEA Setup' option allows you so select the types
of data you wish to have the GPSMAP 196 output.
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The "Status" fi eld will show one of the following:
• Tuning— unit is attempting to tune to the specifi ed frequency and bit rate.
• Scanning— unit is automatically scanning through the frequencies and bit rates.
• Receiving— unit is receiving DGPS signal and ready for operation.
• Check Wiring— unit is not making connection with DGPS receiver.
When the unit is receiving a DGPS signal, the "SNR" (Signal to Noise Ratio) and 'Distance' fi elds
will show data. The SNR range is 0dB to 30dB, with 30 being the best. The Distance may or may not
show data, depending upon the signal being broadcast from the DGPS site.
The DGPS beacon transmitters are operated by the U.S. Coast Guard (or similar government agency
in other countries), which is responsible for their accuracy and maintenance. For DGPS transmitter
problems or to fi nd the most updated list of frequencies and coverage areas, contact your local USCG,
or see their web site at http://www.navcen.uscg.mil/.
Advanced NMEA Output Setup
The GPSMAP 196 NMEA data transmission can be customized to 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 will allow you to turn on/off the GPS status
(GSA. GSV), Waypoint/Route (WPL, RTE) and the Garmin Proprietary sentences. You can also change
the precision of the Lat/Lon minutes.
To set up the Advanced NMEA page:
1. With 'NMEA In/NMEA Out' selected, press MENU. Select 'Advanced NMEA Setup' and press ENTER.
2. To turn a fi eld On/Off, place the highlight over the desired fi eld and press ENTER. Make a selection
and press ENTER again to accept the selection.
GPSMAP 196 NMEA Sentence Output (NMEA version 3.0 compliant)
Always transmitted: GPRMC, GPGGA, GPGLL, GPBWC, GPVTG, GPXTE, GPRMB, GPBOD
Switchable sentences: GPGSA, GPGSV, GPWPL, GPRTE
Garmin proprietary: PGRME, PGRMZ, PGRMM