Serial Data Interfaces - Garmin GTX 45R Installation Manual

5.6

Serial Data Interfaces

5.6.1 RS-232
The RS-232 outputs are compatible with EIA Standard RS-232C with an output voltage swing of at least
± 5 V when driving a standard RS-232 load. RS-232 ports 2 through 4 can be configured for different
functions depending on the installation. Pins P3252-5, -10, and -15 are on the GTX 45R only.
In a G3X system, RS-232 IN/OUT 1 are always connected to the #1 ADAHRS LRU.
RS-232 OUT 1
RS-232 IN 1
RS-232 GND 1
RS-232 OUT 2
RS-232 IN 2
RS-232 GND 2
RS-232 OUT 3
RS-232 IN 3
RS-232 GND 3
RS-232 OUT 4
RS-232 IN 4
RS-232 GND 4
5.6.2 ARINC 429
The ARINC 429 output conforms to the ARINC 429 electrical specification when loaded with up to five
standard ARINC 429 receivers. The ARINC 429 inputs and outputs are automatically configured for
different functions depending on the installation.
ARINC 429 OUT A
ARINC 429 OUT B
ARINC 429 IN 1A
ARINC 429 IN 1B
ARINC 429 IN 2A
ARINC 429 IN 2B
190-01499-10
Rev. 1
Table 5-7 RS-232 Inputs and Outputs
Pin Name
Table 5-8 ARINC 429 Inputs and Outputs
Pin Name
GTX 35R/45R Installation Manual (Non-Certified Aircraft)
Connector Pin
P3251 9
P3251 31
P3251 52
P3251 8
P3251 30
P3251 51
P3251 7
P3251 29
P3251 50
P3252 5
P3252 10
P3252 15
Connector Pin
P3251 5
P3251 6
P3251 27
P3251 28
P3251 48
P3251 49
I/O
O
I
O
O
I
--
O
I
--
O
I
O
I/O
O
O
I
I
I
I
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