VDPSPxN
20.04.2011 ©Velleman nv
5
temperature.
• Keep this manual for future reference.
4. Features
• wall or rack mounting (1U)
• 1 input to 4 outputs (VDPSP4N) / 1 input to 8 outputs (VDPSP8N)
• DMX Thru
• electronic isolation between in-and output
• terminator button for last unit
• power and signal indicator
5. Overview
Refer to the illustrations on page 2 of this manual.
1 DMX in – 3 & 5 pins 5 mounting bracket (2x)
2 LED indicators per channel 6 power connector + fuse
3 terminator button 7 DMX out*
4 ON/OFF power switch 8 DMX thru – 3 & 5 pins
* VDPSP4N: 4x 3 pins + 4x 5 pins / VDPSP8N: 8x 3 pins
6. Installation
a) mounting
• The mounting brackets [5] can be mounted in 3 positions on the side of the device: front,
bottom or back. Place the brackets in front or back position for 19” rack mounting, or in bottom
position for wall mounting.
• Unscrew both screws that hold each bracket and place the bracket in the desired position.
• Retighten the screws.
• Make sure to install the VDPSPxN in a dry location with a normal airflow for sufficient cooling.
b) DMX-512 connections
• Make sure all devices are switched off and disconnected from the mains before making any
connections.
• Connect an XLR cable to the female 3
-pin XLR output of a controller (not incl.) and the other
side to the male 3- or 5-pin XLR input [1] of the VDPSPxN.
• To link multiple VDPSPxNs obtain a suitable linking cable (not incl.). Connect the cable to the
female (=out) DMX Tru connector [8] of the VDPSPxN and the other end to the male (=in)
DMX in connector [1].
Notes:
• Do not use both 3-pin and 5-pin input or output simultaneously.
• The linking cable should be a dual core, screened cable with XLR input and output
connectors.
• Maximum recommended serial data link distance is 500 meters (1640 ft). Maximum
recommended number of fixtures on a serial data link is 32 fixtures.
• On the last VDPSPxN in the chain, enable the DMX terminator by pressing the terminator
button [3]. The terminator prevents corruption of the digital control signal by electrical noise.
• Connect your DMX devices (not incl.) to the female output ports [7] at the back of the
VDPSPxN.
VDPSP4N: only use either the 3-pin or 5-pin output connector of an output channel; never
connect DMX devices to both output ports at the same time.
Note: every last device on a DMX chain connected to an output [7] of the VDPSPxN must get
its own terminator. 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.
7. Operation
• Have a qualified electrician carry out the electrical connection.
• Connect the device to the mains with the power plug. All fixtures must be powered directly off a
grounded switched circuit and cannot be run off a rheostat or dimmer circuit, even if the rheostat
or dimmer channel is used solely for 0% to 100% switch.
• When all connections are made and verified, switch on the VDPSPxN with the ON/OFF switch
[4].
• The red LEDs [2] switch on when the DMX output channels are powered; the green LEDs [2]
indicate the presence of a DMX signal on the indicated channel.
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