Garmin GPS III Plus Owner's Manual - Page 98

APPENDIX C Interfacing / Wiring H Complete information concerning NMEA & RTCM formats and sentences is available for purchase from NMEA at: NMEA PO Box 3435 New Bern, NC 28564-3435 U.S.A. 252-638-2626 252-638-4885 FAX www.nmea.org Radio Technical Commission For Maritime Services (RTCM) 1800 Diagonal Road, Suite 600 Alexandria, VA 22314-2480 U.S.A. 703-684-4481 (Info Only) 703-836-4229 FAX www.rtcm.org 88 Interfacing formats are selected from the Setup Menu, described on page 84. The input/output lines on your GPS III+ are RS-232 compatible allowing easy interface to a wide range of external devices, including PCs, differential beacon receivers, marine autopilots and/or a second GPS receiver. The NMEA 0183 version 2.0 interface format is supported by the GPS III+ and enables the unit to drive up to three NMEA devices: 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 receiver control) DGPS (Differential GPS) corrections are accepted in RTCM SC-104 version 2.0 format through the Data In line. A GARMIN Differential Beacon Receiver (such as the GBR 21 or GBR 23) is recommended for use with the GPS III+. Other beacon receivers with the correct RTCM format may be used, but may not correctly display status or allow tuning control from the GPS unit. The GPS III+ may be hard-wired to a vehicle's electrical system (10-32 VDC) using an optional Power/Data Cable. Consult the diagram to the left for proper connections. (The male connector on the back of the GPS III+ is illustrated.) A cigarette lighter adapter is also available to power your GPS III+ without making permanent connections. (-) Ground Data In Data Out Additional cables are available for the GPS III+. Contact your GARMIN dealer or visit the GARMIN web site (www.garmin.com) for additional accessories. (+) Power GPS III+ Connections (from back of unit)