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GPSMAP 76Cx Owner’s Manual 77
APPENDIX > INTERFACING
Interfacing
The following formats are supported for connection of
external devices.
Garmin Proprietary Sentences—PGRME (estimated
error), PGRMM (datum string), PGRMZ (altitude).
The NMEA 0183 version 3.01 interface format is
supported by the GPSMAP 76Cx and enables the unit
to drive up to three NMEA devices.
The following are the sentences for NMEA 0183,
version 3.01 output:
Approved sentences—GPGGA, GPGLL, GPGSA,
GPGSV, GPRMB, GPRMC, GPRTE, GPVTG,
GPWPL, GPBOD, GPAPB
The USB Interface Cable provided with this unit allows
you to connect your GPSMAP 76Cx to a PC-compatible
computer’s USB port.
Unit Power/Data Port View
(-) Ground
Data OutData In
(+) Power
Power(+)
Data In
Data Out
Ground(-)
Optional Power/Data Serial Port Cable with Bare Wire Leads