Contemporary Research AV6x4 Product Manual - Page 12

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RS-232 Cable Connections

All drawings show pin numbers relative to a PC COM port or Axcent3 DB-9 RS-232 control port.
Pin-outs to other types of control ports may vary.
Single Unit
RS-232
Control Port
Multiple RS-232 Units
Up to three Contemporary Research 232-series components can be daisy-chained from one RS-232
control port. Remember that you will need to use the Unit# address in your programming when you
control more than one AV6x4 from the same control port. You can also daisy-chain 232-series Video
and FM tuners with one or two AV6x4 A/V Routers. In this application, set the Router to the lowest
Unit#.
RS-232
Control Port
RS-232
Control Port
Contemporary Research Corporation
RS-232 Wiring – Single Unit
5 GND
2 RXD
3 TXD
RS-232 Wiring – Two Units
5 GND
2 RXD
3 TXD
RS-232 Wiring – Three Units
5 GND
2 RXD
3 TXD
12
GND 5
TXD 3
RXD 2
GND 5
TXD 3
RXD 2
GND 5
TXD 3
RXD 2
GND 5
TXD 3
RXD 2
GND 5
TXD 3
RXD 2
GND 5
TXD 3
RXD 2
9-pin D-sub
female
Unit 2
9-pin D-sub
female
Unit 1
9-pin D-sub
female
Unit 3
9-pin D-sub
female
Unit 2
9-pin D-sub
female
Unit 1
9-pin D-sub
female
AV6x4 A/V Router