Theatre Colour LT manual.doc
7/12
DMX TERMINATOR
In the Controller mode, the DMX output has to be connected with a DMX terminator at the last
fixture in the chain. This prevents electrical noise from disturbing and corrupting the DMX control
signals.
The DMX terminator is simply an XLR connector with a 120
Ω
(ohm) resistor connected
across pins 2 and 3, which is then plugged into the output socket on the last projector in the
chain. The connections are illustrated above.
Each Theatre Colour LT must be given a DMX start address so that the correct projector
responds to the correct control signals. This DMX start address is the channel number from which
the projector starts to “listen” to the digital control information being sent out from the controller.
The Theatre Colour LT has 9 channels, so set the No. 1 projector’
s address 001, No. 2 projector’
s
address 004, No. 3 projector’
s address 007, No. 4 projector’
s address 010, and so on.
Certainly, you may use formulation: address = channels x (projector No. –1) +1
For example, for the No. 4 projector’
s start address, you should calculate according to formulation:
3 x (4 – 1) +1 = 10, so you set the No. 4 projector start address 010. (How to set DMX start
address please refer to “Operation” section.)
Connect the controller’
s output to the first fixture’
s input, and connect the first fixture’
s output to
the second fixture’
s input. The rest may be deduced by analogy. Eventually connect the last
fixture’
s output to a DMX terminator as shown in the figure below.
When a DMX 512 signal is received the LED will illuminate green. When not receiving a DMX
signal the green and red LEDs will be off.
CONTROLLER MODE - DMX OPERATION
CONTROLLER
DMX IN
NO. 1
DMX 512
DMX OUT
DMX IN
NO. 2
DMX IN
DMX OUT
TERMINATOR
DMX OUT
NO. n