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APPENDIX B
Specifications &
Wiring
DATA IN
(WHITE)
POWER
(RED)
GROUND
(BLACK)
DATA OUT
(BROWN)
Three optional cables are available to connect the GPS 12XL to an external
power source or interface with another unit or PC:
• Cigarette Lighter Adapter— Allows connection to a 12-volt DC cigarette
lighter plug. Part No. 010-10085-00.
• Data Transfer Cable— Allows data transfer between GARMIN GPS units. The
GPS 12XL is compatible with the following units: GPS 38/40/45/45XL, GPS
II/II plus, GPS 12, and GPS 12XL. Information that can be transferred
includes the almanac, waypoints, routes, and tracklog. However, waypoint
symbols are only transferrable from or to units that support waypoint symbols
such as the GPS II plus, GPS 12, and GPS 12XL software version 3.01 or
later. Part No. 010-10142-00.
• PC Kit Interface Cable— PC interface cable with 9-pin ‘D’ serial data connec-
tor. Part No. 010-10141-00.
The following interface formats are supported by the GPS 12XL for driving
three NMEA devices:
unit view
NMEA 0180
NMEA 0182
NMEA 0183 version 1.5
Approved sentences:
GPRMB, GPRMC, GPWPL
Proprietary sentences:
PGRMM (map datum),
PGRMZ (altitude), PSLIB
(beacon rec. control)
NMEA 0183 version 2.0
Approved sentences:
GPGGA, GPGSA, GPGSV,
GPRMB, GPRMC, GPRTE,
GPWPL
Proprietary sentences:
PGRME (estimated error),
PGRMM (map datum), PSLIB
(beacon receiver control)
DGPS corrections are accepted on
RTCM-104 v. 2.1 format.
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GPS 12XL Manual Rev C 7/10/98 11:19 AM Page 51