Cleaning And Maintenance - HQ Power VDP250MHW16FL2 Notice D'emploi

7. DMX-512
Refer to the illustration on page 3 of this manual.
• 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 VDP250MHW16.
• Multiple VDP250MHW16s can be linked through serial linking. The linking cable should be two
core, screened cable with XLR input and output connectors.
Caution:
•
At the last fixture, the DMX cable has to be terminated with a terminator.
•
Only use a stereo shielded cable and 3-pin XLR-plugs and connectors in order to connect the
controller with the fixture or one fixture with another.
DMX-512 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 120Ω resistor between pins 2 and 3, which is
then plugged into the XLR output socket of the last device in the chain.
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 VDP250MHW16.
• 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.
• For the 16-channel VDP250MHW16, you will have to set the start address of the first unit to 1,
the second unit to 17 (1 + 16), the third to 33 (17 + 16), and so on.

8. Cleaning and maintenance

• All screws should be tightened and free of corrosion.
• The housing, the lenses, the 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 ...
• Mechanically moving parts must not show any signs of wear and tear.
• The electric power supply cables must not show any damage. Have a qualified technician maintain
the device.
• Disconnect the device from the mains prior to maintenance activities.
• Wipe the device regularly with a moist, lint-free cloth. Do not use alcohol or solvents.
• There are no user-serviceable parts, apart from the lamp and the fuse.
• Contact your dealer for spare parts if necessary.
29/07/2009
VDP250MHW16FL2
8
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