7
8. Connection of PC and Controller
Connect the video display controller and PC DVI connector with DVI cable, then connect
controller to PC USB connector with USB cable, controller’s output cable connect to
vertical input of LED screen, see following picture:
9. DMX-512 connection with DMX
terminator
For installations where the DMX cable has to run a long
distance or is in an electrically noisy environment, such
as in a discotheque, it is recommended to use a DMX
terminator. This helps in preventing corruption of the digital control signal by electrical noise. The
DMX terminator is simply an XLR plug with a 120
Ω
resistor connected between pins 2 and
3,which is then plugged into the output XLR socket of the last fixture in the chain. Please see
illustrations below.
10. Projector DMX starting address selection
All fixtures should be given a DMX starting address when using a DMX signal, so that the correct
fixture responds to the correct control signals. 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 address is achieved by setting the correct number on the
display located on the base of the device.
You can set the same starting address for all fixtures or a group of fixtures, or make different
address for each fixture individually.
If you set the same address, all the units will start to “listen” to the same control signal from the
same channel number. In other words, changing the settings of one channel will affect all the
fixtures simultaneously.
If you set a different address, each unit will start to “listen” to the channel number you have set,
based on the quantity of control channels of the unit. That means changing the settings of one
channel will affect only the selected fixture.
In the case of the moving head, which is 6channels fixture, you should set the starting address of the
first unit to 1, the second unit to 7(6 + 1), the third unit to13 (6+ 7), and so on.
A. LED Screen Controller
B. Signal out cable
C. Power switch
D. Power in cable
E. USB cable
F. DVI cable
G .USB cable
