Rohde & Schwarz 1094.0006.50, Operating Manual

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Interfaces/Annex A CTS55
1094.0006.55 A.4 E-3
Cable for local controller coupling in the case of hardware handshake
The connection of the CTS to a controller is effected with a so-called zero modem cable. In the case of
this cable, the data, control and report lines must be crossed. The following wiring diagram applies to a
controller with 9-pin or 25-pin configuration.
CTS Controller CTS Controller
9-pin 9-pin 9-pin 25-pin
1
2
3
4
5
6
7
8
9
------------RxD / TxD---------------
------------TxD / RxD---------------
------------DTR /DSR--------------
------------GND / GND-------------
------------DSR / DTR--------------
------------RTS / CTS--------------
------------CTS / RTS--------------
1
3
2
6
5
4
8
7
9 1
2
3
4
5
6
7
8
9
------------RxD / TxD---------------
------------TxD / RxD---------------
------------DTR /DSR--------------
------------GND / GND-------------
------------DSR / DTR--------------
------------RTS / CTS--------------
------------CTS / RTS--------------
8
2
3
6
7
20
5
4
22
Fig. A3-3 Wiring of the data, control and report lines for hardware handshake