Garmin eTrex Manuale Utente

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The Interface Page allows you to connect and use 

devices such as computers and differential GPS (DGPS) 
beacon receivers to the eTrex.  

The ‘Interface’ Settings Page allows you to use your 

eTrex with external NMEA devices, DGPS beacon receiv-
ers, a personal computer, etc. You can choose from seven 
different input/output serial data formats, or none at all. 
Below is a description of each format:

•  GARMIN - the proprietary format used to exchange 

waypoint, route, and track data with a PC.  

•  GARMIN DGPS - allows DGPS input using a GARMIN 

beacon receiver and a standard RTCM SC-104 format 
and DGPS tuning.

•  NMEA OUT - supports the output of standard NMEA 

0183 version 2.0 data.

•  TEXT OUT - allows simple ASCII text output of 

location and velocity information, without any input 
capabilities.

•  RTCM IN - allows DGPS input using a standard RTCM 

SC-104 format without any output capabilities.

•  RTCM/NMEA- allows DGPS input using a standard 

RTCM SC-104 format and supports the output of 
standard NMEA 0183 version 2.0 data. 

•  RTCM/TEXT- allows DGPS input using a standard 

RTCM SC-104 format and simple ASCII text output of 
location and velocity information.

• NONE - provides no interfacing capabilities.

NOTE: Use the ‘RTCM IN’ setting if your 
beacon receiver is self-tuning.

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