Velleman VDPL303WQD - Manual (Page 4)

VDPL303WQD
22.03.2010 ©Velleman nv 4
DMX512 Chain with Termination
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 120 Ω 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.
DMX512 Start Address
All DMX-controlled devices need a digital start address so that the correct device responds to the signals.
This 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 VDPL303WQD.
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 VDPL303WQDs 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 2-channel VDPL303WQD, you will have to set the start address of the first
VDPL303WQD to 1, the second VDPL303WQD to 3 (1 + 2), the third to 5 (3 + 2) and so on.
8. Maintenance
1. All screws should be tightened and free of corrosion.
2. The housing, visible parts, mounting supports and the installation location (e.g. ceiling, suspension,
trussing) should not be deformed, modified or tampered with e.g. do not drill extra holes in mounting
supports, do not change the location of the connections.
3. Moving mechanic parts must not show any signs of wear and tear.
4. The electric power supply cables must not show any damage. Have a qualified technician maintain the
device.
5. Disconnect the device from the mains prior to maintenance activities.
6. Wipe the device regularly with a moist, lint-free cloth. Do not use alcohol or solvents.
7. There are no user-serviceable parts.
8. Contact your dealer for spare parts if necessary.
9. Technical Specifications
power supply 230 VAC ~ 50 Hz
power consumption 20 W
LEDs 3 x 3 W white LED
DMX512 3-pin XLR input and output
dimensions 270 x 270 x 300 mm
weight 2.75 kg
Use this device with original accessories only. Velleman nv cannot be held responsible in the
event of damage or injury resulted from (incorrect) use of this device. For more info
concerning this product and the latest version of this manual, please visit our website
www.hqpower.eu. The information in this manual is subject to change without prior notice.
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The copyright to this manual is owned by Velleman nv. All worldwide rights reserved.
No part of this manual or may be copied, reproduced, translated or reduced to any electronic medium or
otherwise without the prior written consent of the copyright holder.