User Manual

12. APPENDIX
DMX xtures are designed to receive data through a serial Daisy Chain. A Daisy Chain
connection is where the DATA OUT of one xture connects to the DATA IN of the next
xture. The order in which the xtures are connected is not important and has no effect
on how a controller communicates to each xture. Use an order that provides for the
easiest and most direct cabling.
DMX Termonator
Unit 1 Unit 2 Last Unit
DMX 512
Connect xtures using shielded 2-conductor twisted pair cable with 3-pin XLR male to
female connectors. The shield connection is pin 1, while pin 2 is Data Negative (S-), and
pin 3 is Data positive (S+).
3-Pin XLR
Pin 1: GND
Pin 2: DMX -
Pin 3: DMX +
OUTPUTINPUT
DMX use of 3-Pin XLR Connectors
CAUTION: Wires must not come into contact with each other; otherwise the
xtures will not work at all, or will not work properly.
12.1. DMX Terminator
DMX is a resilient communication protocol, however errors still occasionally occur.
In order to prevent electrical noise from disturbing and corrupting the DMX control
signals, a good habit is to connect DMX output of last xture in the chain to a DMX
terminator, especially over long signal cable runs.
The DMX terminator is simply an XLR connector with a 120Ω (ohm), 1/4 Watt resistor
connected across Signal (-) and Signal (+), respectively, pins 2 and 3, which is then
plugged into the output socket on last projector in the chain. The connections are
illustrated below.
14
ENGLISH
4LEDKIT-PARTY User manual