11
DMX
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DMX TECHNOLOGY
DMX-512
DMX (Digital Multiplex) is the designation for a universal transmission protocol for
communications between corresponding devices and controllers. A DMX controller sends
DMX data to the connected DMX device(s). The DMX data is always transmitted as a serial
data stream that is forwarded from one connected device to the next via the "DMX IN" and
"DMX OUT" connectors (XLR plug-type connectors) that are found on every DMX-capable
device, provided the maximum number of devices does not exceed 32 units. The last device
in the chain needs to be equipped with a terminator (terminating resistor).
DMX CONNECTION
DMX is the common "language" via which a very wide range of types and models of equipment from various manufacturers can
be connected with one another and controlled via a central controller, provided that all of the devices and the controller are DMX
compatible. For optimum data transmission, it is necessary to keep the connecting cables between the individual devices as short as
possible. The order in which the devices are integrated in the DMX network has no influence on the addresses. Thus the device with
the DMX address 1 can be located at any position in the (serial) DMX chain: at the beginning, at the end or somewhere in the middle.
If the DMX address 1 is assigned to a device, the controller "knows" that it should send all data allocated to address 1 to this device
regardless of its position in the DMX network.
SERIAL CONNECTION OF MULTIPLE LIGHTS
1. Connect the male XLR connector (3-pin or 5-pin) of the DMX cable to the DMX output (female XLR socket) of the first DMX device
(e.g. DMX-Controller).
2. Connect the female 3-pin XLR connector of the DMX cable connected to the first projector to the DMX input (male 3-pin socket)
of the next DMX device. In the same way, connect the DMX output of this device to the DMX input of the next device and repeat until
all devices have been connected. Please note that as a rule, DMX devices are connected in series and connections cannot be shared
without active splitters. The maximum number of DMX devices in a DMX chain should not exceed 32 units.
The Adam Hall 3 STAR, 4 STAR, and 5 STAR product ranges include an extensive selection of suitable cables.
DMX CABLES
When fabricating your own cables, always observe the illustrations on this page. Never connect the shielding of the cable to the ground
contact of the plug, and always make certain that the shielding does not come into contact with the housing of the XLR plug. If the shielding
is connected to the ground, this can lead to short-circuiting and system malfunctions.
Pin Assignment
DMX cable with 3-pin XLR connectors:
DMX cable with 5-pin XLR connectors (pin 4 and 5 are not used):
Shield
2
3
1
2
3
1
1
2
3
4
5
1
2
3
4
5
Shield
H
G
The front lens (G) and its rubber frame as well as the glass lens behind it (H) can
be cleaned by flipping the retaining bracket upwards as previously described and
then drawing the front lens and its rubber frame upwards out of the retention
arms. Clean the front lens and the glass lens behind it with a moist, lint-free cloth,
making sure not to scratch the surface of the lenses. Put the front lens in front of
the glass lens and return the retaining bracket back to its downward position until
the lock pins click into place.
Important safety notice!
For safety reasons, the filter frame must always be in the respective
bracket on the spotlight, even if no filter is inserted!
