Tunable White and Human Centric Lighting: CCT Control Over DMX
Why colour temperature changes through the day: melanopic EDI, two-channel mixing, DMX channel layout, how DALI DT8 compares, and what to watch in commissioning.
Why colour temperature changes through the day: melanopic EDI, two-channel mixing, DMX channel layout, how DALI DT8 compares, and what to watch in commissioning.
Art-Net, sACN and RDM have no authentication. Anyone on the network can write to your lights. Separate VLANs, switch hardening, VPN and the wireless side.
Why a DMX strip and a pixel strip are not the same thing: SPI chips, DMX-to-SPI decoders, 170 pixels per universe, power injection and the refresh-rate ceiling.
Why older stadiums are moving to LED and DMX: broadcast requirements, a node-per-tower architecture, separating game mode from show mode, and the practical traps of a retrofit.
RDM adds a return path to DMX on the same wires: discover fixtures, set addresses and modes remotely, and read sensor data without touching the rig.
Moving head types and channel structure, the control-channel trap, rigging and safety, fog versus haze, and a maintenance plan.
Which tester does what? The binary-search method for locating faults, terminator and line resistance checks, and proving a fixture on its own.
Why does a DMX universe refresh at most 44 times per second? The maths behind BREAK, MAB and 44 µs slots, the benefit of short packets, and timing-related faults.
What changes when stage thinking moves into a building? Astronomical-clock controllers, network plus node architecture, pixel control, outdoor durability and maintenance.
Mic cable seems to work over short runs, but DMX is a 250 kbit/s data link. Why 120 Ω impedance matters and what to look for in the right cable.