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Lightware MX-FR Series

Lightware MX-FR Series
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10. Technologies MX-FR Series Modular Matrix Frames – User's Manual 127

Lightware Visual Engineering is a legal HDCP adopter. Several
functions have been developed which helps to solve HDCP related
problems. Complex AV systems often have both HDCP and non-HDCP
components. The matrix allows transmitting HDCP encrypted and
unencrypted signals. The devices will be still HDCP compliant as they
will never output an encrypted signal to a non-HDCP compliant display
device. If an encrypted signal is switched to a non-compliant output, a
red screen alert or muted screen will appear.
Protected and Unprotected Content
Many video sources send HDCP protected signal if they detect that
the sink is HDCP capable – even if the content is not copyrighted. This
can cause trouble if an HDCP capable device is connected between
the source and the display. In this case, the content cannot be viewed
on non-HDCP capable displays and interfaces like event controllers.
Rental and staging technicians often complain about certain laptops,
which are always sending HDCP encrypted signals if the receiver
device (display, matrix router, etc.) reports HDCP compliancy. However,
HDCP encryption is not required all the time e.g. computer desktop
image, certain laptops still do that.
To avoid unnecessary HDCP encryption, Lightware introduced the
       
disabled in the Lightware device. If HDCP is disabled, the connected
source will detect that the sink is not HDCP capable, and turn off
authentication.
Disable Unnecessary Encryption

Protected
content
HDCP-compliant
sink
Encrypted
signal
Encrypted
signal
MX-FR Matrix
DVI cableDVI cable
SOURCES
DESTINATIONS
POWER
USB
control
ESC
MX-FR17
17x17 DIGITAL MATRIX ROUTER
TEST INPUT
PREVIEW OUTPUT
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
9 10 11 12 13 14 15 16
1 2 3 4 5 6 7 8
CCOONNTTRROOLL
LLOOCCKK
LLOOCCKK
OOUUTTPPUUTT
LOAD
PRESET
EDID
SIGNAL
PRESENT
TAKE
AUTO
SAVE
PRESET
All the devices are HDCP-compliant, no manual setting is required, both
protected and unprotected contents are transmitted and displayed on
the sink.

Unprotected
content
Non-HDCP
compliant sink
Non-encrypted
signal
Non-encrypted
signal
MX-FR Matrix
DVI cableDVI cable
SOURCES
DESTINATIONS
POWER
USB
control
ESC
MX-FR17
17x17 DIGITAL MATRIX ROUTER
TEST INPUT
PREVIEW OUTPUT
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
9 10 11 12 13 14 15 16
1 2 3 4 5 6 7 8
CCOONNTTRROOLL
LLOOCCKK
LLOOCCKK
OOUUTTPPUUTT
LOAD
PRESET
EDID
SIGNAL
PRESENT
TAKE
AUTO
SAVE
PRESET
Not-HDCP compliant sink is connected to the matrix. Some sources
(e.g. computers) always send HDCP encrypted signals if the receiver
device reports HDCP compliancy, however, HDCP encryption is
not required all the time (e.g. computer desktop image). If HDCP is
enabled in the matrix, the image will not be displayed on the sink.
Setting the HDCP parameter to Auto on the output port and disable
HDCP on the input port, the transmitted signal will not be encrypted
if the content is not protected. Thus, non-HDCP compliant sinks will
display non-encrypted signal.

Protected
content
Non-HDCP
compliant sink
Encrypted
signal
MX-FR Matrix
DVI cableDVI cable
SOURCES
DESTINATIONS
POWER
USB
control
ESC
MX-FR17
17x17 DIGITAL MATRIX ROUTER
TEST INPUT
PREVIEW OUTPUT
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
9 10 11 12 13 14 15 16
1 2 3 4 5 6 7 8
CCOONNTTRROOLL
LLOOCCKK
LLOOCCKK
OOUUTTPPUUTT
LOAD
PRESET
EDID
SIGNAL
PRESENT
TAKE
AUTO
SAVE
PRESET
The layout is the same as in the previous case: non-HDCP compliant
display device is connected to the matrix but the source would send
protected content with encryption. If HDCP is enabled on the input
port of the matrix, the source will send encrypted signal. The sink
is not HDCP compliant, thus, it will not display the video signal (but

of the matrix, the source will not send the signal. The solution is to
replace the display device to an HDCP-capable one.

Signal reclocking is an essential important procedure in digital signal
transmission. After passing the reclocking circuit, the signal becomes
stable, jitter-free, and can be transmitted over more equipment like

and jaggies appear on the image.
     
     
only intra-pair skew but inter-pair skew as well. The Pixel Accurate
Reclocking circuit eliminates the following errors:
Intra-pair skew
Skew between the + and - wires within a differential wire pair (e.g.
    
different wire construction (impedance mismatch) in DVI cable. It
results in jitter.
Intra-pair skew
+
-
Inter-pair skew
Skew between two differential wire pairs in a cable. It is caused by
different wire pair lengths or different number of twists in the DVI
cable. Too much inter-pair skew results color shift in the picture or
sync loss.
+
-
Inter-pair skew
+
-

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