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DMX512 electrical specifications are identical to those of the EIA-485-A standard, except where stated otherwise in E1.11 [example needed]. DMX512 is a bus network no more than 400 metres (1,300 ft) long, with not more than 32 unit loads (individual devices connected) on a single bus. If more than 32 unit loads need to communicate, the network ...
Art-Net is a royalty-free communications protocol for transmitting the DMX512-A lighting control protocol and Remote Device management (RDM) protocol over the User Datagram Protocol (UDP) of the Internet protocol suite. [1]
Remote Device Management (RDM) is an addition to the DMX512 control protocol for stage lighting equipment, introduced in 2006. DMX512 was developed in the late 1980s as a standard protocol for lighting consoles to communicate with dimmers, but has since been used for more complex applications, including the control of intelligent lighting fixtures.
It is not to be confused with the Category:Network layer protocols, which is for articles on protocols fitting into the Internet protocol suite network layer. Contents Top
The number of nodes can be limited by either number of available addresses or bus capacitance. None of the above use any analog domain modulation techniques like MLT-3 encoding, PAM-5 etc.
Lighting consoles communicate with the dimmers and other devices in the lighting system via an electronic control protocol. The most common protocol used in the entertainment industry today is DMX512 , although other protocols (e.g. 0-10 V analog lighting control ) may still be found in use, and newer protocols such as ACN and DMX-512-A are ...
It is generally attached to the gel frame holder at the transmitting end of a lighting fixture, so colour is introduced after the beam characteristics have been defined by the optics of the lighting instrument. Most scrollers are controlled via DMX512 protocol, but some models (e.g. Wybron's Colouram IT) also utilize the RDM protocol.
In 1985, the first moving head to use the DMX512 protocol was produced by Summa Technologies. Up until that time, moving lights were using other communication protocols, such as DIN8, AMX, D54 and the proprietary protocols of other companies, such as VariLite, Tasco, High End and Coemar.