Garmin GNC 255 User Manual

190-01182-02 GTR 225/GNC 255 TSO Installation Manual
Rev. B Page 6-3
6.4.1 SYS Configuration
6.4.1.1 Serial Port
The Serial Port page (Figure 6-2) allows the installer to configure the I/O mode for the RS-232 port. See
Table 6-1 for the selections that are available:
Figure 6-2. Serial Port Page
Table 6-1. Serial Port Selections
6.4.1.2 DST Display
The DST Display page (Figure 6-3) allows the installer to configure source priority for the display of
distance, speed, time (DST) information, if both GPS and DME systems are providing data to the GNC.
The GNC can display DST data from a DME or GPS device. Select “GPS, DME” to give priority to DST
data from a connected GPS receiver or “DME, GPS” to give priority to DST data from a connected DME
receiver.
Figure 6-3. DST Display Page
Selection Description
NONE No unit(s) connected to input/output of this channel.
AVN IN/MAPCOM Serial data transfer with the GTN 6XX/7XX and GNS 400W/500W series.
NMEA
Serial data transfer with G500/G600, GPSMap, Aera Series, XL Series, or
GX Series.

Garmin GNC 255 Specifications

General

Channels	760
Frequency Range	118.000 to 136.975 MHz
Channel Spacing	25 kHz
Input Voltage	11 to 33 VDC
Dimensions	159 x 50 x 193 mm