Filter
Top Products
45
Interface formats are selected from the SETUP Page.
The input/output lines on your eTrex are RS-232 compat-
ible, allowing easy interface to a wide range of external
devices, including PC’s, differential beacon receivers,
marine autopilots and/or a second GPS receiver.
The NMEA 0183 version 2.0 interface format is
supported by the eTrex 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
GARMIN 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. The GARMIN GBR 21 is the recommended beacon
receiver for use with the eTrex. 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 eTrex may be hard-wired to a serial connector
using the Data Cable (see page 8 for ordering informa-
tion). Refer to the wiring diagram and the eTrex unit data
connection illustrated below.
The optional PC Interface Cable (010-10206-00)
allows you to connect your eTrex to a PC-compatible
computer’s serial port.
eTrex
Connector
Data
Cable
Ground (-)
Data Out
Data In
Power (+)
Ground
Data Out
Data In
White
Green
Black
Appendices
Appendix E
Wiring Diagram
etrex manual.indd 10/12/00, 11:17 AM45