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INTRODUCTION:
Thank you for purchasing an Applied Electronics Omni DMX splitter. The Omni
line has been designed, built and tested with pride in the USA. Your Omni splitter
comes with a 5 year warranty and has been constructed to endure years of use in the
rough and tumble entertainment environment.
The ANSI E1.11-2008(R2013) standard, commonly know as DMX, is an RS-485
digital protocol for transmitting data from a controller to entertainment lighting and
practical devices. While the DMX signal is very robust it is not impervious to outside
interference. There are also limitations to transmitting distance and the number of
receivers on a line. For these reasons a splitter is an invaluable tool in the data chain
to ensure that the data transmitted reaches receivers correctly.
Common data chain issues include:
• Splitting – By the DMX standard, only 32 receiving devices may be connected
on a daisy chain line. Also “Y” connections used to send signal in different
directions are not permitted.
• Line loss – Due to DC voltage loss continuous DMX lines in excess of 1000ft
are not recommended.
• Interference – Outside electromagnetic sources can corrupt the data on a DMX
line and cause undesired operation of lighting fixtures.
• Surges – Voltage spikes from shorted cables and faulty fixtures can feed down
the data chain and damage other fixtures or the console.
The Omni splitter helps eliminate all of these issues by:
• Isolation – Each output transmits its own copy of the input signal so that that 32
fixtures may be connected to each port.
• Amplification – Because each output transmits with the same full power as the
original, total line lengths of more than 1000ft may be obtained.
• Filtering – The input data signal is digitally copied in the isolation process so
only clean data is fed to the outputs. As a result any (acceptable) interference
received at the input is filtered out before being retransmitted.
• Isolation – The input as well as each output port are separated from each other
by galvanic and optical isolation. This ensures that a damaging voltage spike on
one line can't propagate to another.
• Voltage suppression – All data ports have TVS (transient voltage suppression)
diodes that short voltage spikes to ground before they can damage internal
components.
Omni DMX Splitter V1.01 1/31/19
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