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Choose from different input/output serial data formats (‘I/O FORMAT’) for connecting
external NMEA devices, a DGPS beacon receiver, a personal computer, etc. Effective use of
this feature requires a working knowledge of these formats:
GARMIN: The proprietary format used to exchange waypoint, track, and map data with a
PC.
GARMIN DGPS: Allows DGPS input using a GARMIN beacon receiver and a standard
RTCM SC-104 and DGPS tuning.
NMEA Out: Supports the output of standard NMEA 0183 version 3.0 data.
Text Out: Allows ASCII text output of location and velocity information without input
capabilities.
RTCM In: Allows DGPS input using a standard RTCM SC-104 format without output
capabilities.
RTCM/NMEA: Allows DGPS input using a standard RTCM SC-104 format and supports the
output of standard NMEA 0183 version 3.0 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.
If ‘GARMIN DGPS’ or ‘RTCM/NMEA’ format is selected, additional fields are provided to
control a GARMIN differential beacon receiver (e.g. GBR 21 & GBR 23) directly from your
unit. In the ‘BEACON’ list, select ‘SCAN’ to tune automatically, or select ‘USER’ to manually
tune the receiver and enter the beacon frequency and bit rate. Refer to the beacon receiver
instructions.
Setup Menu: Set Interface
Setup Menu
Set Interface Page
Selecting the I/O Format