
PS Engineering
PAC45J Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-045-2000
Appendix
November 2020
8.1.1
EFIS Interface
J455
1
2
3
4
5
6
7
8
9
P455
PILOT
EFIS
INTERFACE
PAC45G
HUB LRU
RX- RS422 TX -
RX+ RS422 TX +
TX- R S422 RX -
TX+ RS422 RX +
GND
1
2
3
4
5
6
7
8
9
P454
21
22
19
20
9
PAC45
HUB LRU
RX- RS422 TX -
RX+ RS422 TX +
TX- RS422 RX -
TX+ RS422 RX +
GND
OBSR 1
J455
1
2
3
4
5
6
7
8
9
12
13
10
11
8
RX- RS422 TX -
RX+ RS422 TX +
TX- RS422 RX -
TX+ RS422 RX +
GND
POWER
AIRCRAFT GND
NO CON NECTION
OBSR 2
3
4
1
2
9
RX- RS422 TX -
RX+ RS422 TX +
TX- RS422 RX -
TX+ RS422 RX +
GND
COPILOT
EFIS
INTERFACE
POWER
GROUND
NO CON NECTION