Garmin GPSMAP 196 - Manual (Page 104)

• GARMIN DGPS—used to connect the GPSMAP 196 with a
Garmin DGPS beacon receiver.
• NMEA In/NMEA Out—supports the input/output of
standard NMEA 0183 version 2.3 data and sonar NMEA input
support for the DPT, MTW, and VHW sentences.
• Aviation In—the proprietary format used for connection to a
Garmin panel-mounted GPS receiver. Allows the GPSMAP
196 to show a Goto or route selected on the panel-mounted
GPS receiver. This eliminates the need to enter the destination
on both units.
• RTCM In—allows Differential GPS (DGPS) input using a
standard RTCM format.
• RTCM In/NMEA Out—allows Differential GPS (DGPS)
input using a standard RTCM format and also provides
NMEA 0183 version 2.3 output.
• RTCM In/Text Out—allows Differential GPS (DGPS) input
using a standard RTCM format and also outputs simple text
data that includes, data, time, location, and velocity.
• Text Out—allows the unit to output simple text data that
includes, data, time, location, and velocity. The Baud can be
set to 1200, 2400, 4800, or 9600.
• None—provides no interfacing capabilities.
If you select GARMIN DGPS or RTCM In/NMEA Out format,
you can control a differential beacon receiver directly from your
GPSMAP 196 using the Interface sub tab. You can have the unit
automatically scan for the DGPS beacon signal, or you can enter
the beacon frequency and bit rate on the unit, and the information is
used to tune the beacon receiver. If you use a DGPS receiver, WAAS
capability is automatically turned off.
To have the unit automatically scan for a frequency:
1. With the unit set to GARMIN DGPS or RTCM In/NMEA Out,
use the ROCKER to highlight the Beacon field, and press
ENTER.
2. Highlight Scan, and press ENTER. The numbers in the
Frequency field change as the unit scans from 284 kHz to
325 kHz, 200 bit rate, then 100, at 6-second intervals.
Interface sub tab of the Setup tab with GARMIN DGPS selected
96 GPSMAP 196 Pilot’s Guide
M
AIN
M
ENU
> S
ETUP
T
AB