Basics - thomann LED Foot 8 DMX User Manual

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Basics

Signal transmission
Wiring
This chapter contains basic information about data transmission via DMX protocol.
DMX signals are generated by a DMX controller and transmitted to the connected devices
using a DMX cable. Up to 512 channels per connection can be transmitted, with a value
between 0 and 255 is transmitted for each channel. The 512 channels form a so-called 'DMX
universe'.
DMX devices are wired in series, i.e., a transmitting unit sends out signals to all connected
receivers. The receiver arrangement in the device chain can be chosen arbitrarily, since all
devices filter and process the relevant data independently.
To form a serial device chain, the DMX input of the first receiver is to be connected to the DMX
output of the controller or other DMX master unit. The output of the first receiver then has to
be connected to the input of the second and so on. The output of the last receiver in a DMX
chain must be terminated with a resistor (110 Ω, ¼ W).
LED Foot 8 DMX
Basics
25