Garmin GPS 120XL - Manual (Page 47)

TracBack Function
The TracBack option lets you activate a TracBack
route using the track log (see pages 29-30 for more
information).
To activate a TracBack route:
1. Highlight the ‘TRACBACK?’ option and press
F
.
Interface Setup
The interface setup page lets you specify the inter-
facing formats for connecting external devices. There
are five interface options: GRMN/GRMN, None/None,
None/NMEA, RTCM/None, and RTCM/NMEA. Each
option lists the input format first, followed by the out-
put format.
To select I/O format:
1. Highlight the I/O field and press
F
.
2. Use the
U
and
D
keys to toggle through and
select the desired setting, and press
F
.
The GRMN/GRMN setting is a proprietary format
that lets you exchange information such as waypoints,
routes and track logs between two GARMIN GPS
devices or a PC. During data transfer, the number of
packets being exchanged will be displayed on screen.
To select a transfer option:
1. Highlight the ‘host’ field and press
F
.
2. Use
U
and
D
to select a setting and press F .
43
A field for additional infor-
mation will be displayed
when required for the select-
ed interface option. Above,
the None/NMEA option will
allow input of NMEA ver-
sions and a baud rate.
REFERENCE
TracBack &
Interface
Options
Chose a ‘HOST’ field based
upon the type of informa-
tion transfer you want to
occur between the two
interfacing devices.
120XL Man RevB 7/10/98 10:55 AM Page 43