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Electronic Theatre Controls Inc

Legacy Unison RS-232 Serial Pinout

Pinout for Connection to an ER4 Rack

Rev A - D Signal Distribution Board (only has one serial connector)

  • Pin 1 - TX
  • Pin 2 - RX
  • Pin 3 - Ground

Rev E or higher (has two serial connectors)

  • Pin 1 - Ground
  • Pin 2 - RX
  • Pin 3 - TX

Pinout for Connection to a DR Dimming Rack

All Revisions of Arch Option Board

  • Pin 1 - TX
  • Pin 2 - RX
  • Pin 3 - Ground