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CHANNEL 13
CHANNEL 14
c. DMX-512 Connections
Connect the provided XLR cable to the female 3-pin
XLR output of your controller and the other side to the
male 3-pin XLR input of the VDP250MH14.
Multiple VDP250MH14s can be linked through serial
linking. The linking cable should be two core, screened
cable with XLR input and output connectors.
Please refer to the diagram at the right.
d. DMX-512 Chain with termination
e. Projector DMX start address selection
All DMX-controlled devices need a digital start address so that the correct device responds to the signals. This digital
start address is the channel number from which the device starts to "listen" to the DMX controller. Enter the correct
number and read it from the display located on the base of the VDP250MH14.
You can use the same starting address for a whole group of devices or enter an individual one for every device.
When all devices have the same address, all the units will "listen" to the control signal on one particular channel. In
other words: changing the settings of one channel will affect all devices simultaneously. If you set different
addresses, each device will "listen" to a separate channel number. Changing the settings of one channel will only
affect the device in question.
In the case of the 14-channel VDP250MH14, you will have to set the start address of the first unit to 1, the second
unit to 15 (14 + 1), the third to 29 (15 + 14), and so on.
VDP250MH14
Description
Pan fine
Tilt fine
A DMX terminator is recommended for installations where the DMX cable has to run a long
distance or is in an electrically noisy environment (e.g. discos). The terminator prevents
corruption of the digital control signal by electrical noise. The DMX terminator is simply an
XLR plug with a 120Ω resistor between pins 2 and 3, which is then plugged into the XLR
output socket of the last device in the chain.
Please see illustrations to the left.
From
To
Function
20
39
Lamp switch on
40
59
Motor reset
60
79
Internal programme 1
80
99
Internal programme 2
100
119 Internal programme 3
120
139 Internal programme 4
140
159 Internal programme 5
160
179 Internal programme 6
180
199 Internal programme 7
200
219 Internal programme 8
220
239 Lamp switch off
240
255 No function
0
255 16 bit
0
255 16 bit
5
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