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DR4 RJ45 to xlr3

Discussion in 'EthConGateway by Joshua 1 Systems' started by Pyrotech, Jan 1, 2011.

  1. Pyrotech

    Pyrotech New Elf

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    I've got to build a cable to connect from the DR4 slave to a 3 pin xlr DMX laser, does anybody know the correct pins please.
     
  2. Blickensderfer

    Blickensderfer Ohio, USA

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    XLR Pin 1 (GND) ----> N/C
    XLR Pin 2 (-ve) ----> RJ45 Pin 2 (Orange)
    XLR Pin 3 (+ve) ----> RJ45 Pin 1 (White/Orange
     
  3. OP
    OP
    Pyrotech

    Pyrotech New Elf

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    Thanks for that, Its pin 1 that was confusing me....
     
  4. David_AVD

    David_AVD Bite my shiny metal ass!

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    DMX (RS485) is a 3 wire connection. XLR pin 1 goes to RJ45 pin 7 & 8.
     
  5. OP
    OP
    Pyrotech

    Pyrotech New Elf

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    So assuming the patch cable I'm using is correctly wired its Orange and white pin 1 to xlr pin 3
    Orange pin 2 to xlr pin 2 , and brown and brown and white pins 7 and 8 to xlr pin 1. and if only 2 wires are used, the connection to pin1 on the xlr will be redundant and have no effect.

    and if I build an xlr3 terminator its 120 ohms across pin 2 and 3.
     
  6. David_AVD

    David_AVD Bite my shiny metal ass!

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    All 3 pins of the XLR are used:

    XLR pin 1 to RJ45 pins 7 & 8 (brown & white/brown)
    XLR pin 2 to RJ45 pin 2 (orange)
    XLR pin 3 to RJ45 pin 1 (White/Orange)

    Yes.
     
  7. wjohn

    wjohn Apprentice Elf

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    As long as the cable is T568B standard, T 568A would be green and green/white
     
  8. David_AVD

    David_AVD Bite my shiny metal ass!

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