Astralpool PAR 56 Manuel D'installation Et D'entretien page 5

Through a DMX modulator (code 41107) you can
control 3 channels, which correspond to red, green
and blue of all the projectors connected to this
DMX modulator. In this way, 256 different levels
can be achieved for each colour. By mixing the
three colours, you can obtain over 16 million
colours. You should assign an address to each
modulator, which will determine the 3 channels it
can control (see Assignment of DMX address).
Power input (12V ~AC)  Connections 8 and 9
DMX Input: GND  Connection 18
-  Connection 19
+  Connection 20
DMX Output: GND  Connection 21
-  Connection 22
+  Connection 23
Assignment of DMX address
The modulator uses 3 DMX channels: red, green and blue, the display of the modulator shows the address
corresponding to the red colour, the following address corresponds to the green and the next one to the blue. If for
example in the display we have the "009" this indicates that through the channels 9, 10 and 11 we will control the red,
green and blue colours.
The buttons + and – that are in the display are used to select the DMX address. Once the wished address is selected, its
memorizing takes 3 seconds. After that, the modulator will already be totally operative.
Example:
DMX line termination
At the last terminal of the DMX line, the line termination should be activated. At the remaining terminals, the line
termination should be deactivated.
In DMX modulators, the line termination is activated connecting the connections 14 and 15 with a cable and
connecting with another cable the connections 16 and 17.
DMX communications bus
The DMX signal can be affected by electrical noise from other signals. It is recommended to install the DMX bus away
from electric cables and other interferences.
The maximum length of the DMX bus is around 100 m., although it varies depending on the conditions of each
installation. In adverse conditions, repeaters (splitters) (code 41645) should be installed in longer lengths or line
branches.
The DMX signal is transmitted from equipment to equipment through a "daisy chain" type connection, where the
equipment is connected in a chain. The DMX cable with the original signal leaves the DMX controller and is sent to the
first equipment of the DMX link. From the first equipment, the signal goes to the next one and so on. The DMX line is
terminated in the last equipment (see previous section). Different equipment can be connected at any point of the line
whatever the assigned address.
It is not possible to connect more than one DMX controller in the same DMX bus.
The cable used should be suitable for this type of signal: shielded, twisted pair with a nominal impedance of 120 ohms
(80 - 150) and low capacitance, with a minimum thickness equivalent to 24 AWG.
Base address = 9
Red:
Green :
Blue :
Base address = 12
Red :
Green :
Blue :
5
12V~AC
Channel 9
Channel 10
Channel 11
Channel 12
Channel 13
Channel 14