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QMultiFlex-400™ Installation and Operating Handbook
1:N (1:1) Interface
9-pin, Male D-type
Pin # Description
1
Ground
2
Line In
3
Line Out
4
Serial In (A)
5
Serial IN (B)
6
Fail In
7
Fail Out
8
Serial Out (A)
9
Serial Out (B)
1:1 Redundancy Cable
A standard 1:1 lead (part number P1391) is available from Teledyne Paradise Datacom.
The lead is 2ft long and is designed for use when two modems are mounted vertically
adjacent to each other in the rack.
The 1:1 redundancy cable is wired as follows:
Modem
Modem
1 Pin #
2 Pin #
1
1
2
3
3
2
6
7
7
6
The cable must be of the shielded variety and should be kept as short as practical.
Chapter 10
Signal Name
Circuit ground (screen)
On-Line signal 2-1
On-Line signal 1-2
Fail signal 2-1
Fail signal 1-2
Connector Pinouts
10-1
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