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DMX 101: A DMX 512 Handbook
4 Elation Professional ®
This handbook is designed to promote basic understanding of the DMX 512 protocol, including theory of
operation, proper equipment use, and some basic application examples.
DMX is an acronym for D igital M ultiple x , a communication protocol (a set of rules) used to remotely control
lighting dimmers and intelligent fixtures. It is designed to provide a common communications standard between
these lighting devices regardless of the manufacturer.
The 512 after the DMX refers to the number of control channels used on one network segment (often called a
‘universe’) of devices. In a simple dimming system, one channel controls the intensity of one dimmer. A single
intelligent fixture, however, may require several channels to control its various parameters (one channel each for
pan, tilt, color, gobo, etc.).
A basic dimming control console (such as the 16 channel Elation Stage-Setter 8) may support only a few of the
512 available channels. Many professional control consoles (such as the 3 universe, 1536 channel Elation Show
Designer 3) support multiple universes, allowing for thousands of control channels.
The topics this handbook will cover are:
•
Industry Standards
•
Theory of Operation
•
Protocol Specifications
•
Sample Applications
1. Introduction to DMX
1