Table 14. Discrete Inputs - Garmin GTX 330 System Maintenance Manual

AVIONICS MASTER ON SELECT
EXTERNAL IDENT SELECT*
EXTERNAL STANDBY SELECT*
SQUAT SWITCH IN
TIS CONNECT SELECT*
AUDIO MUTE SELECT*
* This output is considered active if either the voltage to ground is < 1.9 VDC or the resistance to
ground is < 375 Ω. This output is considered inactive if the voltage to ground is 11-33 VDC.
5.3.5 RS-232 INPUT/OUTPUT
Pin Name
RS-232 OUT 1
RS-232 IN 1
RS-232 OUT 2
RS-232 IN 2
5.3.6 ARINC 429 INPUT/OUTPUT
ARINC 429 OUT 1A
ARINC 429 OUT 1B
ARINC 429 IN 1A
ARINC 429 IN 1B
ARINC 429 IN 2A
ARINC 429 IN 2B
ARINC 429 OUT 2A
ARINC 429 OUT 2B
ARINC 429 IN 3A
ARINC 429 IN 3B
ARINC 429 IN 4A
ARINC 429 IN 4B
190-00734-11
Rev. 1
The document reference is online, please check the correspondence between the online documentation and the printed version.

Table 14. Discrete Inputs

Pin Name
Table 15. RS-232 Connections
Table 16. Arinc 429 Connections
Pin Name
Pin Number I/O
1 In
12 In
13 In
17 In
46 In
47 In
Pin Number I/O
23 Out
22 In
25 Out
24 In
Pin Number I/O
37 Out
34 Out
32 In
35 In
33 In
36 In
30 Out
28 Out
26 In
29 In
48 In
49 In
GTX 330/33 with ADS-B Out
Maintenance Manual with ICA
5-7
Unit
(33/330)
330 Only
Both
Both
Both
Both
Both
Unit
(33/330)
Both
Both
Both
Both
Unit
(33/330)
Both
Both
Both
Both
Both
Both
Both
Both
Both
Both
Both
Both