Nx Control Box - Barco NX-4 Installation Manual

4. Components of a NX fixed tile
4.3

NX control box

Introduction NX control box
The small design and its synthetic housing make of the NX control box a lightweight device. The NX control box contains a power
supply unit and a controller/re-sync unit. Thanks to the integrated mounting plate, the NX control box can easily be attached to the
rear framework of the NX frame. So, no tools are required to install the NX control box. The rear side of the mounting plate, contains
a fast screw which allows to secure the NX control box to the frame.
The rear side of the NX control box has a power input socket (type C14) on which the required input voltage of 200-240 VAC, 50-60
Hz, 1.4 amps at 230 VAC is applied to. Next to the power socket the rear side of the control box has a column of three circular output
ports. These three output ports are labeled from 1 to 3 starting at the top. These output ports are connected with the NX modules.
Note that maximum three NX modules may be connected in cascade per output port.
The bottom of the NX control box has two pairs of female HDMI sockets which are used for data communication between the NX
control boxes or digitizer. These four bidirectional ports are labeled from A to D and each port has its own color as well, respectively
red, green, blue and yellow.
The NX control box can only be used with the new generation of DX digitizers like the DX-700 digitizer. The re-sync unit detects on
which of the four HDMI sockets the data stream is applied to. The controller extract its required data from the incoming data stream.
The extracted content is further processed (16 bit) and sent via the three output ports to the NX modules. Furthermore, the re-sync
unit reinforces the incoming data stream and redirects the stream to the other HDMI sockets.
The standard HDMI cables used between the NX control boxes are of the straight type (not crossed). Because of this the HDMI
sockets A and B are designed as "slave" ports and C and D as "master" ports. The differences between the "slave" and "master"
ports is that the receiving and transmitting pins are switched. A data connection between two NX control boxes must always be
made between a "master" port and a "slave" port. Nevertheless, the data stream is bidirectional. It is also important to know that
the digitizer output is of the "master" type. So, the HDMI cable coming from the digitizer must be plugged into a "slave" port of a NX
control box.
Other features of the NX control box are the diagnostic LED's on the cover (power, communication, fan and temperature) and the
slave USB port for servicing purposes (future expansion).
HDMI
The High-Definition Multimedia Interface (HDMI) is an all-digital audio/video interface capable of transmitting
uncompressed streams. HDMI is compatible with High-bandwidth Digital Content Protection (HDCP) Digital
Rights Management technology.
Parts location of the NX control box
Image 4-8
A Bidirectional data port A (slave).
B Bidirectional data port B (slave).
C Bidirectional data port C (master).
D Bidirectional data port D (master).
E Power/Data output port 3.
F Power/Data output port 2.
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