igital ultiple. A digital lighting control protocol which is now the industry standard for most control situations. In particular many intelligent lights now offer only DMX as a control input.

DMX 512 is a standard dimmer control protocol implemented by U.S.I.T.T. to provide a means for interfacing dimming and control equipment from different manufacturers. A single DMX control cable carries dimmer intensity information for 512 dimmers serially down 2 wires. Many other devices can be controlled via DMX. Examples include fog machines, strobe lights, and automated fixtures. These devices, developed since DMX was first implemented, may interpret the DMX intensity data in different ways. An automated fixture, for example, may interpret a level of 50 on dimmer 1 as meaning move mirror in the x direction to the mid-way point. See Also: Automated Fixture Strobelight Fog Machine Control Cable USITT Protocol

Acronym for "Digital Multiplex." In DMX512, the 512 represents the number of channels a single data link will support.