Garmin GPS 40 - Manual (Page 61)

Three optional cables are available to connect the GPS 40 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 and reduces voltage to 5-8 volts DC.
• Data Cross-Load Cable— Allows direct transfer of data between GPS 40 units.
• PC Kit Data Cable— PC Kit interface cable with 9-pin ‘D’ serial data connector.
The following interface formats are supported by the GPS 40 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)
Complete information concerning NMEA formats and sentences is available from
the NMEA at P. O. Box 50040, Mobile, AL 36605; 205-473-1793, 205-473-1669 FAX.
Cost of the NMEA materials is currently $35 U. S. dollars, plus shipping and handling.
DGPS corrections are accepted on RTCM-104 v. 2.0 format. The GARMIN GBR 21
is the recommended beacon receiver for use with the GPS 40. Other receivers with the
correct RTCM format may be used, but may not correctly display status or allow tuning
control from the GPS 40.
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Appendix F
Electrical
Wiring &
Interfaces
(UNIT VIEW)
40 rev B 8/6/98 1:48 PM Page 55