Garmin GPS 90 - Manual (Page 75)

The GPS 90 Power/Data Cable allows you run the unit
off 8-40 volts DC power and connect to external devices.
Always use the power cable with a 2 amp fuse (included).
To connect the power/data cable:
1. Connect the red lead to the positive side of a 8-40 VDC source.
2. Connect the black lead to the negative side of the power source.
3. Connect the white lead to the output port of a connected device.
4. Connect the brown lead to the input port of a connected device.
The following interface formats are supported by the
GPS 90 for driving three NMEA devices:
• NMEA 0180 • NMEA 0182
• NMEA 0183 version 1.5
Approved sentences:
GPBWC, GPGLL, GPRMB, GPRMC, GPXTE, GPVTG,
GPWPL
Proprietary sentences:
PGRMM (map datum), PGRMZ (altitude), PSLIB
(beacon rec. control)
• NMEA 0183 version 2.0
Approved sentences:
GPGGA, GPGLL, GPGSA, GPGSV, GPRMB, GPRMC,
GPRTE, GPWPL
Proprietary sentences:
PGRME (estimated error), PGRMM (map datum), PGRMZ
(altitude), PSLIB (beacon receiver control)
67
Appendix C
Batteries
& Electrical
Wiring
If you are using the
power/data cable, make
sure the power/data con-
nector is properly
installed in the mounting
bracket before inserting
the unit in the bracket.
To connect to external
power, open the rubber
plug on the back of the
unit and snap the GPS
90 firmly into the
mounting bracket. Once
the unit is properly con-
nected, the GPS 90 will
run off external power,
and the battery level
indicator will no longer
appear on the Satellite
Status page.
gps 90 manual 8/6/98 10:01 AM Page 67