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AC56 Standard configuration prior to June 2004

The AC56 is almost identical to the AC55. The only difference is that the AC55 has a link between pins 4 and 9 of each input making the +5 volt supply available on both pins. Some Barcode scanners and other peripheral devices are already wired to accept a power source on Pin 9.

 

AC56: Input 1, DB9 male

PinSignalNotes
1o/cNot connected
2RxDData coming from device and entering Mux for onward transmission to Host.
3TxDOptional return data path from Mux to device. Not connected unless jumper link is fitted. Default is not fitted
4DTRProvides + 5v DC at up to 300mA to power devices
5GNDCommon data ground
6DSRNot connected
7RTSRS232 handshake line output. Permanently enabled (Wired to +12v via 1k resistor)
8CTSNot connected
9o/cNot connected
 

AC56: Input 2, DB9 female

PinSignalNotes
1o/cNot connected
2RxDData coming from device and entering Mux for onward transmission to Host.
3TxDOptional return data path from Mux to device. Not connected unless jumper link is fitted. Default is not fitted
4DTRProvides + 5v DC at up to 300mA to power devices
5GNDCommon data ground
6DSRNot connected
7RTSRS232 handshake line output. Permanently enabled (Wired to +12v via 1k resistor)
8CTSNot connected
9o/cNot connected

AC56: Jumper Links and Data Switch

Configuration details- AC56 AC56: View inside case

Summary

  • Jumper Link Channel 1: Open. Backward data path disabled
  • Jumper Link Channel 2: Open. Backward data path disabled
  • Data Switch: Away from Power Socket. Data injected into Host/Terminal pin 3 circuit.
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