MZMDLT123
3 pin XLR DMX resistance terminator
MX177924
End-connector/terminator for DMX-systems - 120 Ohms.
MX993082
3-pin female XLR to 5-pin male XLR. For DMX lighting equi...
Although DMX cables look like ordinary microphone cables, they are infact manufactured from special twisted pair cables that ensure the safe transmission of the DMX signals.
In a typical installation each effect is "daisy-chained" to the next, starting with the DMX controller and ending with a terminator - most DMX light effects have both a DMX in and a DMX out connection to facilitate this.
It is recommended to fit a 177.924 DMX loop terminator at the end of the DMX loop
Each light in a DMX system is "daisy-chained" to the next using special DMX cables typically using 3-pin or 5-pin XLR connectors - each light has an input socket (XLR male) and output socket (XLR female).
A controller is fitted at one end of the chain and a 120 ohms resistor in the form of a terminator at the other. The terminator works by absorbing signal power which would otherwise be reflected back into the cable and degrade the data transmission, that said, it is possible to operate a small number of devices without a terminator.
3-pin XLR connections
1=GND, 2=DATA (-), 3=DATA (+) |
|
5-pin XLR connections
1=GND, 2=DATA (-), 3=DATA (+), 4=NOT USED, 5= NOT USED |
Each light in a DMX set up requires a number of channels to operate.
The first channel that a light effect uses is typically set using DIP switches on the unit, or in some cases a simple LED display and push buttons - you should refer to the manual of each effect for more details.
DMX channel is set using DIP switches or through the LED display depending on the design of each unit. |