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5. DMX512 Connection
The DMX512 is widely used in intelligent lighting control, with a maximum of 512
channels.
y
A DMX512 system requires a controller, lighting equipment and cable. These
are connected together in a "daisy chain" with the terminator at the end. The
cable cannot be branched or split to a "Y" cable.
y
The terminator requires a 90-120 Ohm 1/4 Watt resistor soldered between
two signal cables.
y
The DMX512 uses a very high-speed signal. Inadequate or damaged cables,
bad solder joints or corroded connectors can easily distort the signal and shut
down the system. A reliable DMX512 system starts with good quality cables.
y
Each lighting unit needs to have an address set to receive the data sent by
the controller. The address number is between 0-511. The end of the
DMX512 system should be terminated reducing signal errors.
y
3 pin XLR connectors are more popular than 5 pin XLR.
3 pin XLR: Pin 1: GND, Pin 2: Negative signal (-), Pin 3: Positive signal (+)
5 pin XLR: Pin 1: GND, Pin 2: Negative signal (-), Pin 3: Positive signal (+)
7-
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