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Reference

Connector Pin Outs

5 pin XLR for DMX 512

Pin 1 ground (screen)
Pin 2 data complement (negative inverted) conductor (usually black)
Pin 3 data true (positive non inverted) conductor (usually white)
Pin 4 spare data complement (negative inverted) conductor (usually green)
Pin 5 spare data true (positive non inverted) conductor (usually red)

3 pin XLR for DMX 512

Pin 1 ground (screen)
Pin 2 data complement (negative inverted) conductor (usually black)
Pin 3 data true (positive non inverted) conductor (usually white)

3 pin XLR for High End Systems Protocol

Pin 1 shield
Pin 2 data complement (negative)
Pin 3 data true (positive)

3 pin XLR for Martin Professional Protocol (pre MAC 600)

Pin 1 ground (screen)
Pin 2 data true (positive)
Pin 3 data complement (negative)

3 pin XLR for Martin Professional Protocol (MAC 600 and later products)

Pin 1 ground (screen)
Pin 2 data complement (negative)
Pin 3 data true (positive)
Recent Martin Professional fixtures are fitted with a set of jumpers on the main PCB that allow you to reconfigure the pinout of the data connectors. Please consult your user manual 

5 pin DIN for MIDI

Pin 1 not connected
Pin 2 ground – in / out / through
Pin 3 not connected
Pin 4 positive non inverting – in / out / through
Pin 5 negative inverting – in / out / through

4 pin XLR for Chroma-Q Color Changers

Connector metal tab (ground) – drain wire
Pin 1 0 Volts (power) conductor, thick (usually white)
Pin 2 data true (positive non inverted) conductor (usually red)
Pin 3 data complement (negative inverted) conductor (usually green)
Pin 4 24 Volts (power) conductor, thick (usually black)

19 pin Socapex for Lighting

Pin 1 Circuit 1 Live
Pin 2 Circuit 1 Neutral
Pin 3 Circuit 2 Live
Pin 4 Circuit 2 Neutral
Pin 5 Circuit 3 Live
Pin 6 Circuit 3 Neutral
Pin 7 Circuit 4 Live
Pin 8 Circuit 4 Neutral
Pin 9 Circuit 5 Live
Pin 10 Circuit 5 Neutral
Pin 11 Circuit 6 Live
Pin 12 Circuit 6 Neutral
Pin 13 Circuit 1 Earth
Pin 14 Circuit 2 Earth
Pin 15 Circuit 3 Earth
Pin 16 Circuit 4 Earth
Pin 17 Circuit 5 Earth
Pin 18 Circuit 6 Earth
Pin 19 not connected

37 pin Socapex for Lighting Control

Pin 1 – 30 Control circuit 1 to 30
Pin 31 – 34 Control circuit tie lines used on older Avolites control desks
Pin 35 – 37 Control circuit ground