This DMX control is used to find the right dip switch for a certain address setting of a light system that operates in DMX 512 mode.Switch one represents value 1, switch 2 is 2, 3 is 4, 4 is 8, 5 is 16, 6 is 32, 7 is 64, 8 is 128, 9 is 256.Many of the more modern control desks instead of featuring multiple OUT connectors have a Cat 5 connector, Cat 5 cables and systems can control up to 32768 universes of DMX512 4 using the Art-Net protocol and the existing Ethernet in buildings.For digital multiplexers, see Multiplexer Digital multiplexers.
Please help improve this article by adding citations to reliable sources. Find sources: DMX512 news newspapers books scholar JSTOR ( February 2011 ) ( Learn how and when to remove this template message ). It allows a DMX universe from one source to be repeated to several chains of devices, in order to avoid signal degradation due to long cable runs. It was originally intended as a standardized method for controlling light dimmers, which, prior to DMX512, had employed various incompatible proprietary protocols. It soon became the primary method for linking controllers (such as a lighting console ) to dimmers and special effects devices such as fog machines and intelligent lights. DMX has also expanded to uses in non-theatrical interior and architectural lighting, at scales ranging from strings of Christmas lights to electronic billboards and stadium or arena concerts. DMX can now be used to control almost anything, reflecting its popularity in theaters and venues. False triggering may be caused by electromagnetic interference, static electricity discharges, improper cable termination, excessively long cables, or poor quality cables. The resulting revised standard, known officially as Entertainment TechnologyUSITT DMX512-AAsynchronous Serial Digital Data Transmission Standard for Controlling Lighting Equipment and Accessories, was approved by the American National Standards Institute (ANSI) in November 2004. It was revised again in 2008, and is the current standard known as E1.11 2008, USITT DMX512-A, or just DMX512-A. A network consists of a single DMX512 controller which is the master of the network and one or more slave devices. For example, a lighting console is frequently employed as the controller for a network of slave devices such as dimmers, fog machines and intelligent lights. The controller, which usually has only an OUT connector, is connected via a DMX512 cable to the IN connector of the first slave. A second cable then links the OUT or THRU connector of the first slave to the IN connector of the next slave in the chain, and so on. For example, the block diagram below shows a simple network consisting of a controller and three slaves. A terminator is a stand-alone male connector with an integral 120 resistor connected across the primary data signal pair; this resistor matches the cables characteristic impedance. If a secondary data pair is used, a termination resistor is connected across it as well. Although simple systems ( i.e., systems having few devices and short cables) will sometimes function normally without a terminator, the standard requires its use. ![]() Each universe operates up to 512 channels which are each parameters between 0 and 255. A lighting controller simply changes the value of these parameters. ![]() Smaller controllers may have a single OUT connector, enabling them to control only one universe, whereas large control desks (operator consoles) may have the capacity to control multiple universes, with an OUT connector provided for each universe.
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