DMX512


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DMX512

(Digital MultipleX 512) A unidirectional protocol for controlling theatrical lights and special effects machines. DMX512 was developed by the Entertainment Services and Technology Association (ESTA) in the late 1990s. Providing 512 channels per link, DMX512 is based on RS-485 electrical signaling. Up to 512 target devices are daisy chained together via "In" and "Out" sockets, and cables use 5-pin XLR connectors. Via gateways and the "Streaming ACN" protocol, DMX data can ride over IP and Ethernet. The latest version of DMX512 is officially USITT DMX512-A (2008). See XLR connector.

Remote Device Management (RDM)
Developed in 2005, RDM is an enhancement to DMX512 that provides two-way transmission between controller and RDM-compatible devices over the same lines. Because there is communications back to the controller, RDM units can report their identity and features to the lighting engineer. In addition, rather than climbing a ladder to a light in order to physically change its address, RDM is used to change address from the console. However, legacy DMX products that assume all packets are DMX without checking start codes can react inappropriately when RDM signals are transmitted.


DMX/RDM Theater Consoles
ETC is a major provider of DMX/RDM equipment, including consoles, light fixtures, rigging and networking. (Image courtesy of ETC, www.etcconnect.com)
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Acuity Brands Fresco show WM: A stand-alone DMX512 touchscreen lighting controller that mounts in a three-gang wall box.
The dimming adjustment of the GP-LP060P LED drivers ranges from 10% to 100%, without a driver controller or DMX512 protocol.
Despite the ubiquity of wireless devices in other applications, the lighting industry continues to use multiple, wired-data links to carry the universal DMX512 stage lighting and effects control standard.
The EZ-Color solution now includes drivers for the DMX512 protocol, enabling designers to create an entire intelligent lighting network quickly and easily with no coding required.
Comprising 54 Luxeon LEDs, it is available in both remote controlled and DMX512 versions.
DMX512 is a standard for digital communication networks that are commonly used to control stage lighting and effects.
It has a lumen output of 300 lumens per ft, and is controlled via DMX512 compatible interfaces.
com)-- Continually delivering outstanding and value adding products, MY-Semi is going to launch innovative lighting solution - DMX512 protocol compatible LED driver IC.
MAL Effekt also developed a custom DMX512 Power module that was used drive the LEDs, generate the desired colors, and control both color point and brightness via pulse width modulation (PWM).
The controllers can operate 120 or 277-V loads, on the Philips DyNet network, on DMX512 or stand alone.