Conventional light boards are the most basic lighting consoles—and also the most prevalent in smaller installations. They consist of two or more identical fader banks, called scenes. The faders (control slides) on these scenes can be manually adjusted. Each scene has the same number of channels which control the same dimmers. So the console operator can build a scene offline or in "blind", a cross-fader or submaster is used to selectively mix or fade between the different scenes.
Generally, at least with a preset board, the operator has a cue sheet for each scene, which is a diagram of the board with the faders in their positions as determined by the lighting designer. The operator sets the faders into their positions based on the cue sheets. Typically during a cue, the operator sets the next scene. Then, the operator makes the transition between the scenes using the cross-fader.
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