Installation Instructions

GTN 6XX/7XX AML STC Installation Manual 190-01007-A3
Page 1-10 Rev. 4
If there are two GTXs connected to dual GTNs, GTN #1 should be connected to GTX #1 and GTN #2
should be connected to GTX #2 as shown in Figure 1-6. In this configuration, each of the GTN units is
capable of controlling either GTX through the HSDB interface.
GTN 6XX/7XX
#1
GTN 6XX/7XX
#2
GTX 3X/3XX
#1
GTX 3X/3XX
#2
RS232
RS232
HSDB
Figure 1-6. Interface Between Two GTNs and Two GTXs
To enable TIS traffic for the combination of two GTXs connected to dual GTNs, each of the GTX units
must be connected to both GTNs because the TIS data is not transmitted over HSDB. Also, only the
GTX 33 and the GTX 330 are capable of receiving TIS traffic data. This arrangement is shown in
Figure 1-7. The pressure altitude source must also be connected to both GTNs.
GTN 6XX/7XX
#1
GTN 6XX
/7XX
#2
GTX
33/330
#1
GTX 33
/330
#2
RS232
RS
232
HSDB
RS
232
RS
232
Figure 1-7. Interface Between Two GTNs and Two GTXs with TIS Traffic
1.5.1.1 Installation with GTN Control of GTX Transponder
When connected to a GTX 32/33/327/328/330, the GTN can control the transponder as well as transmit
pressure altitude (if a pressure altitude source is connected to the GTN). GTN and GTX configuration
settings can be found in Section C.8 and Figure E-12, respectively.