Pub. 42004-406A
Model 12594-001 Redundant AZI Switching Module Page: 3 of 7
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04/08
The following is a summary of each connector and terminal block function(s):
J1 – Primary AZI Card (25-pin D-Sub) J2 – Secondary AZI Card (25-pin D-Sub)
Pin No. Function Pin No. Function
1 & 14 RS-485 Data 1 & 14 RS-485 Data
5 & 18 Audio line #1 5 & 18 Audio line #1
6 & 19 Audio line #2 6 & 19 Audio line #2
7 & 20 Audio line #2 7 & 20 Audio line #2
8 & 21 Audio line #4 8 & 21 Audio line #4
9 & 22 Audio line #5 9 & 22 Audio line #5
10 & 23 Audio line #6 10 & 23 Audio line #6
2-4, 11-13, 15-17,
24-25
Spare – No connection
2-4, 11-13, 15-17,
24-25
Spare – No connection
JTB1 – 12 V dc Power Input JTB2 - 12 V dc Power Output
Terminal No. Function Terminal No. Function
1 12 V (+) 1 12 V (+)
2 12 V (-) 2 12 V (-)
3 GND
JTB3 – Secondary RS-485 data line JTB5 - Primary RS-485 data line
Terminal No. Function Terminal No. Function
1 Data (-) 1 Data (+)
2 Data (+) 2 Data (-)
