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Connecting the Power/Data
The power/data cable connects the GPS 76 to a 8-35 volt DC system and
provides interface capabilities for connecting external devices. The color code in
the diagram below indicates the appropriate harness connections. Replacement
fuse is a AGC/3AG - 2.0 Amp fuse.
Interfacing
The following formats are supported for connection of external devices:
GARMIN proprietary Differential GPS (DGPS), NMEA 0183 version 2.3, ASCII
Text Output, RTCM SC-104 input (version 2.0).
The following are the sentences for NMEA 0183, version 2.3 output:
Approved sentences — GPRMC, GPGGA, GPGSA, GPGSV, GPGLL, GPBOD,
GPRTE, and GPWPL; Proprietary sentences — PGRME, PGRMZ, and PSLIB. The
GPS 76 also includes NMEA input with support for the DPT, MTW, and VHW
sentences.
You can download a copy of GARMIN’s proprietary communication protocol on
the Help and Support section of our website at www.garmin.com.
3
8-35
Brown: Data Out
White: Data In
Black: Ground
Red: Power
59
Getting Started
59
Wiring & Interfacing
Appendix B
Unit View
Data In
White
Power
Red
Ground
Black
Data Out
Brown
Cable View
Data In
White
Power
Red
Data Out
Brown
Ground
Black
190-00229-00.indd 07/25/01, 11:23 AM59