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| iControl Electronics Co., Ltd www.icontrol.com.vn |
• One-way communication (RDM added feedback)
• Originally developed by the US Institute of Theater Technology and released in 1988 for theatrical applications
– specifically RGB light sources
• Standardized as ANSI E1.11-2008 “DMX512-A - Asynchronous
Serial Digital Data Transmission Standard for Controlling Lighting Equipment
and Accessories”
• Requires two low-voltage differential wires which carry a
high speed signal, daisy-chained across one or more devices
• Easy to assign individual control devices to one or many
light sources without added wiring.
• Available in wireless implementations as well (WDMX)
DMX512 features and
challenges:
Features:
- Serial data stream sent over a balanced cable system connected between a data transmitter and a data receiver.
- Addressing of up to 512 channels per data link or “universe”, at data rates of up to 250 kbits/second.
- Systems typically consist of a one or more data transmitters (typically a lighting console) connected to a variety of data receivers.
Challenges:
- Requires unique wiring and wiring practices
- Complex addressing and programming of multiple channels
- Typically costly controls, luminaires, and wiring
- Can create mixed-color white, but not well suited for general lighting
Typical
DMX512 system:
DMX data receivers:
• Dimmers, control gear
• Mechanical color changers
• Color changing light sources
• Lasers, strobes
• Smoke, confetti machines, other theatrical devices
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