Garmin GTX 23 Manual De Usuario
190-00906-01
GTX 23 Installation Manual
Rev. C
Page 4-5
4.3 Serial Data Electrical Characteristics
4.3.1 RS-232 Input/Output
RS-232 input #1 is used to receive pressure altitude control commands. RS-232 output #1 provides unit
status and TIS data. RS-232 #1 input and output are also used for software upgrades.
For installations that enable ADS-B, RS-232 input #2 should be connected to a GNS 400W/500W-series
WAAS enabled unit or a GTN 6XX/7XX series unit. This connection provides the GTX 23 with GPS data
for ADS-B. The RS-232 output #2 is unused on the GTX 23.
The RS-232 outputs conform to EIA Standard RS-232C with an output voltage swing of at least ±5 V
when driving a standard RS-232 load. Refer to figures in Appendix C for the RS-232 serial data
interconnect.
status and TIS data. RS-232 #1 input and output are also used for software upgrades.
For installations that enable ADS-B, RS-232 input #2 should be connected to a GNS 400W/500W-series
WAAS enabled unit or a GTN 6XX/7XX series unit. This connection provides the GTX 23 with GPS data
for ADS-B. The RS-232 output #2 is unused on the GTX 23.
The RS-232 outputs conform to EIA Standard RS-232C with an output voltage swing of at least ±5 V
when driving a standard RS-232 load. Refer to figures in Appendix C for the RS-232 serial data
interconnect.
4.3.2 ARINC 429 Input/Output
The ARINC 429 outputs conform to ARINC 429 electrical specifications when loaded with up to five
standard ARINC 429 receivers.
standard ARINC 429 receivers.
Table 4-5 RS-232 Input/Output
Pin Name
Connector
Pin
I/O
RS-232 OUT 1
P2301
23
Out
RS-232 GROUND 1
P2301
43
--
RS-232 IN 1
P2301
22
In
RS-232 OUT 2
P2301
25
Out
RS-232 IN 2
P2301
24
In
RS-232 GROUND 2
P2301
50
--
Table 4-6 ARINC 429 Input/Output
Pin Name
Connector
Pin
I/O
ARINC 429 OUT 1A
P2301
37
Out
ARINC 429 OUT 1B
P2301
34
Out
ARINC 429 OUT 2A
P2301
30
Out
ARINC 429 OUT 2B
P2301
28
Out
SIGNAL GROUND
P2301
51
--
SIGNAL GROUND
P2301
58
--