Suppression Bus - Garmin GTX 45R Installation Manual

5.6.3 HSDB
The HSDB interface uses Ethernet wiring to communicate with certain Garmin panel-mount navigators
and active traffic systems.
ETHERNET OUT 1A
ETHERNET OUT 1B
ETHERNET IN 1A
ETHERNET IN 1B
ETHERNET OUT 2A
ETHERNET OUT 2B
ETHERNET IN 2A
ETHERNET IN 2B
5.6.4 RS-422
The RS-422 interface conforms to the electrical specifications of EIA standard RS-422.
RS-422 A
RS-422 B
5.7

Suppression Bus

The EXTERNAL SUPPRESSION is intended for connection to other L-band equipment, such as a DME
or UAT. The output is active whenever the GTX 35R/45R transmits. When driven by another source, the
GTX 35R/45R transponder receiver and transmitter functions will be suppressed.
The EXTERNAL SUPPRESSION output is driven to ≥ 18 VDC when the GTX 35R/45R transmits. An
input voltage of ≥ 10 VDC will suppress the GTX 35R/45R.
EXTERNAL SUPPRESSION
190-01499-10
Rev. 1
Table 5-9 Ethernet Inputs and Outputs
Pin Name
Table 5-10 RS-422 Outputs
Pin Name
Table 5-11 External Suppression Bus Pin
Pin Name
GTX 35R/45R Installation Manual (Non-Certified Aircraft)
Connector Pin
P3252 6
P3252 1
P3252 7
P3252 2
P3252 8
P3252 3
P3252 9
P3252 4
Connector Pin
P3252 11
P3252 12
Connector Pin
P3251 18
I/O
O
O
I
I
O
O
I
I
I/O
O
O
I/O
I/O
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