Garmin GPSMAP 180 - Manual (Page 82)

Connecting the Power/Data Cable
The power/data cable connects the GPSMAP 180 to a 10-40 volt DC system
and provides interface capabilities for connecting external devices, including an
external alarm. The color code in the diagram below indicates the appropriate
harness connections.
The following formats are supported for connection to up to 3 NMEA devices:
• NMEA 0180/NMEA 0182
• NMEA 0183 version 1.5
Approved sentences— GPBWC, GPGLL, GPRMB, GPRMC, GPXTE, GPVTG, GPWPL, GPBOD
Proprietary sentences— PGRMM, PGRMZ (alt.), PSLIB (beacon receiver control input)
• NMEA 0183 version 2.0
Approved sentences— GPGGA, GPGLL, GPGSA, GPGSV, GPRMB, GPRMC, GPRTE, GPWPL,
GPBOD
Proprietary sentences— PGRME (estimated error), PGRMM (map datum)
PGRMZ (altitude), PSLIB (beacon rec. control input)
DGPS corrections are accepted in RTCM-104 v. 2.0
format through the NMEA In (BROWN) harness lead. The
GARMIN GBR 21 is the recommended beacon receiver for
use with the GPSMAP system.Other receivers with the
correct RTCM format may be used, but may not correctly
display status or allow tuning control from the GPSMAP
unit.
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SECTION
B
APPENDIX
Wiring &Specifications
PIN ASSIGNMENT