DMX 101: A DMX 512 Handbook
Many DMX devices (such as dimmers and intelligent fixtures) are capable of receiving several control channels at once. If a Dimmer has four channels capable of controlling four Light Fixtures (Figure 3), it must know which four control channels to receive. This is accomplished by setting a ‘base address’, or the DMX address for the first Light Fixture (channel 005, in this example). The remaining Light Fixtures will be controlled by the next three sequential control channels. The DMX Decoder knows it needs only these four control channels, and will ignore the rest.
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Figure 3
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