EIGHT HEAD BEAM BAR
8
below.). You can chain multiple moving heads together through serial linking. The cable
that should be used is two conductor, shielded DMX cable with XLR input and output
connectors. Always be sure daisy chain your in and out data connections, never split or “Y”
your DMX connections unless you are using an approved DMX splitter .
DMX-512 connection with DMX terminator
A DMX terminator should be used in all DMX lines especially in longer runs. The use of
a terminator may avoid erratic behavior in your DMX line. A terminator is a 120 ohm 1/4
watt resistor that is connected between pins 2 and 3 of a male XLR connector (DATA +
and DATA -). This fixture is inserted in the female XLR connector of the last fixture in your
daisy chain to terminate the line. Using a line terminator (Elation part: DMX T PACK) will
decrease the possibilities of erratic behavior.
5-Pin XLR DMX Connectors. Some manufactures use 5-pin XLR connectors for DATA
transmission in place of 3-pin. 5-pin XLR fixtures may be implemented in a 3-pin XLR DMX
line. When inserting standard 5-pin XLR connectors in to a 3-pin line a cable adaptor must
be used, these adaptors are readily available at most electric stores. The following chart
details a proper cable conversion.
Fixture DMX addressing
All fixtures should be given a DMX starting address when using a DMX controller, so the
correct fixture responds to the correct control signal. This digital starting address is the
channel number from which the fixture starts to “listen” to the digital control information
sent out from the DMX controller. The allocation of this starting DMX address is achieved
by setting the correct DMX address on the digital display located on the base of the fixture.
You can set the same starting address for all fixtures or a group of fixtures, or set different
address for each individual fixture. Be advised that setting all you fixtures to the same DMX
address will subsequently control all fixtures in the same fashion, in other words, changing
the settings of one channel will affect all the fixtures simultaneously.
If you set each fixture to a different DMX address, each unit will start to “listen” to the
