Understanding is a kind of ecstasy.—Carl Sagan
The first moving lights needed no addressing capabilities because they were each individually connected directly to the console with bundles of wires, with each pair controlling a single attribute with a 0 to 10V control signal. As controllers became more sophisticated and moved to a digital multiplex control format, it necessitated the need for a fixture addressing system so each fixture could decode the digital signal to determine whether or not to respond to any given command. Most of them used (and some still use) a dual inline package (DIP) switch system that allowed the address to be set manually in the field. The address is configured by turning individual switches on ...