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3.3 Summary
So how does all this information relate to controlling a light fixture? Think of it in terms of the simple DMX
Controller Console (Figure 4). The console may have up to 512 control faders on it (8 in this example). Each
fader controls the intensity of one light (using one DMX Channel). The position of the fader represents an 8-bit
value (DMX Value) between 0 and 255, where 0 is off and 255 is full on.
Up to 32 devices may be connected in a daisy-chain, with a terminator on the last device. Using a DMX splitter/
repeater (opto-isolator) can extend both cable distance (as the signal is regenerated and re-transmitted) and the
number of devices (up to 32 per branch).
Figure 4
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