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Check the protocol
Check whether the proper protocol is selected (see section 8.1 about changing protocols
on page 100). Select Protocol #1 in order to use the matrix with the controller software.
11.4. Picture is not displayed or distorted
Check the cables (DVI)
Due to the high data rates, the cables must fit very well. DVI connectors have to be
locked with screws, no tensions or breaches are allowed. If your source or display has
more connectors then make sure that the proper input port is selected.
Although all the I/O boards are equipped with DVI-I connectors, analog signals are not
supported. You cannot use VGA cables with DVI-VGA adapter plugs. The only exception
is the MX-DVII-HDCP-IB and the MXD-UMX-IB which accept analog signals as well.
Check the cables (TP)
Although twisted pair signal transmission uses the same plugs and cables as TCP/IP or
Ethernet networks, the transmission is NOT compatible with these interfaces. DVI-TP or
HDMI-TP cables must not be connected to any Ethernet device.
Due to the high data rates, high quality cables must be used. It is recommended to use
Cat6 or Cat7 S/FTP cables.
Check the crosspoint matrix
Check the connection between the input and output port either on the front panel or from
web or the control software. Check whether the output is muted or not.
Check EDID related problems
Maybe your display device is not capable of receiving the sent video format. Try
emulating your display device's EDID to the source.
Check the source
Check whether your source is powered on and configured properly. The HDMI output can
be turned off on some DVD players. If the source is a computer, then verify that the DVI
output is active. Try restarting your computer; if you get a picture during the booting
process, you have to review the driver settings.
Section 11. Troubleshooting
MX-FR series modular matrices
User's Manual
Page 133 / 137
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