Changing the Data Format
The COM 1 and COM 2 tabs allow you to control the input/output
format used when connecting your unit to external devices. To open
the COM 1 or COM 2 tab, press MENU twice to open the Main
Menu. Select Setup from the vertical tab list. Then select COM 1 or
COM 2 from the row of tabs along the top of the page.
COM 1 Tab of the Setup Tab
Serial Data Format—sets the data format to one of the following:
• Garmin Data Transfer—the proprietary format used to
exchange data with a PC or another Garmin GPSMAP 276C.
Garmin Data Transfer is disabled when the USB is connected,
and the unit automatically switches to USB format. When
the USB is disconnected, the USB field changes to Transfer
Mode, as shown above.
• GARMIN DGPS—used to connect the GPSMAP 276C with
a Garmin DGPS beacon receiver.
• NMEA In/NMEA Out—supports the input/output of
standard NMEA 0183 version 3.01 data and sonar NMEA
input support for the DPT, MTW, and VHW sentences.
• Text Out—allows the unit to output simple text data that
includes, data, time, position, and velocity. The Baud can be
set to 1200, 2400, 4800, or 9600.
• 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 3.01 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, position, and velocity.
• None—provides no interfacing capabilities.
88 GPSMAP 276C Owner’s Manual
CUSTOMIZING YOUR GPSMAP 276C > CHANGING THE DATA FORMAT
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