b. 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. This device features a built-in DMX terminator, which is activated by means of the red DIP switch on
the device. Switch it in the ON position if the device is the last device in the chain.
c. 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. Set the correct
number by means of the DIP switches on the device.
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.
DMX channels:
• Ch 1: strobe rate
• Ch 2: strobe dimmer
! Warning: Ch2 to 0% and Ch1 to 100% creates a blinder effect but this may last for max. 5 seconds, otherwise the
lamp may get damaged.
d. Function selection
There are 10 DIP switches ; the way these are set determines the operation mode of the device.
DMX address setting
Set DIP switch 10 to ON (up). Now use the first 9 switches to determine the address. The 9 switches each have a
different value, which is always one more than the sum of all switches before it. This means switch 1 has value 1,
switch 2 has value 2, switch 3 has value 4, 4 is 8, 5 is 15, 6 is 32, 7 is 64, 8 is 128 and 9 is 256. Take the address
you want to give to the device and start counting from switch 9 to 1, selecting the values that need to be added along
the way. Set the corresponding switches to ON. The maximum value is 511 (all 9 switches are ON).
Test program
Switch 10 must be OFF (down).
This function allows you to perform the automatic test program (switch 9 OFF) or to set the speed and dimmer
functions yourself (switch 9 ON).
For the automatic test program, the value of the first 8 switches does not matter, as long as they are not all ON.
In the manual program, switches 1-4 are used to set the speed and switches 5-8 are used to set the dimmer function.
The table below indicates you the switches should be set to determine speed and dimmer function (16 levels each):
level
0 (slow)
1
2
3
4
5
6
7
Music control
This function sets the device to music-controlled. Switches 1-8 must be ON, switches 9 and 10 must be OFF.
VDP1500ST
DIP switch setting
OFF – OFF – OFF – OFF
ON – OFF – OFF – OFF
OFF – ON – OFF – OFF
ON – ON – OFF – OFF
OFF – OFF – ON – OFF
ON – OFF – ON – OFF
OFF – ON – ON – OFF
ON – ON – ON – OFF
level
DIP switch setting
8
OFF – OFF – OFF – ON
9
ON – OFF – OFF – ON
10
OFF – ON – OFF – ON
11
ON – ON – OFF – ON
12
OFF – OFF – ON – ON
13
ON – OFF – ON – ON
14
OFF – ON – ON – ON
15 (fast)
ON – ON – ON – ON
3
VELLEMAN