HQ Power VDP250MGD2 Notice D'emploi page 5

c) Mounting the Device
• Have the device installed by a qualified person, respecting EN 60598-2-17 and all other applicable norms.
• The carrying construction must be able to support 10 times the weight of the device for 1 hour without deforming.
• The installation must always be secured with a secondary attachment e.g. a safety cable.
• Never stand directly below the device when it is being mounted, removed or serviced. Have a qualified technician
check the device once a year and once before you bring it into service.
• Install the device in a location with few passers-by that is inaccessible to unauthorised persons.
• Overhead mounting requires extensive experience: calculating workload limits, determining the installation
material to be used... Have the material and the device itself checked regularly. Do not attempt to install the
device yourself if you lack these qualifications as improper installation may result in injuries.
• Adjust the desired inclination angle via the mounting bracket and tighten the bracket screws.
• Make sure there is no flammable material within a 0.5m radius of the device.
• Have a qualified electrician carry out the electric connection.
• Connect the device to the mains with the power plug. Do not connect it to a dimming pack.
• The installation has to be approved by an expert before the device is taken into service.
6. Operation
DMX512 Connection
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 VDP250MGD2. Multiple VDP250MGD2s can be linked through serial linking. The linking cable
should be a two-core screened cable with XLR input and output connectors.
DMX-512 Chain with Termination
Selecting the Start Address for the DMX Projector
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 digital commands from the DMX
controller. Enter the correct number and read it from the display located on the base of the VDP250MGD2.
You can use the same starting address for a whole group of devices or enter an individual one for every device.
When using one single 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 2-channel VDP250MGD2, you will have to set the start address of the first device to 1, the second
unit to 3 (1 + 2), the third to 5 (3 + 2), and so on.
The LED next to the LED display indicates the status of the DMX signal:
LED flashing: DMX signal present.
LED off: No DMX input signal.
After powering up the device, the display shows the DMX start address. Set the desired start address by means of
the YES or NO button to increase or decrease the address value. Press ENTER to confirm. Other functions can also
VDP250MGD2
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 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.
5 VELLEMAN