12. Appendix
UCX series – User's Manual
164
Applied firmware package: v1.2.0b9 | LDC software: v2.5.10b1
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Known issue:
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Properties of Audio XP do not reflect the limitations of the video XP. If I5 is in use on the video layer,
neither the video nor the audio content of I1 cannot be used.
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Locked audio or video ports can be muted or unmuted.
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192kHz multichannel audio is only delivered as stereo to the outputs. Lower sampling rates are not
affected.
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SwitchAll method cannot be used to disconnect all outputs. Switch method can be used instead.
switchAll(0) method does not work. switch(0:O1;0:O2) works as expected.
Known issue:
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No fading at the analog audio output during signal switching
v1.0.1b1
Release date: 2020-12-09
Bugfix:
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Improved ZIP file upload
v1.0.0b6
Release date: 2020-11-19
Known issue:
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No fading at the analog audio output during signal switching
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The following properties can be set to On or Off mode: /V1/MEDIA/VIDEO/O1.Output5VMode /V1/
MEDIA/VIDEO/O2.Output5VMode Auto mode will be available in a future release.
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Reporting the presence of embedded audio on the HDMI output is not reliable./MEDIA/VIDEO/
O1.EmbeddedAudioPresent The property might read true while there is no embedded audio on the
connected input port. Transmission of the embedded audio stream from input to output is unaffected.
Muting the audio also works as expected.
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VCONN is not supplied by USB Type-C interface of the product, if the port partner sends a Vconn Swap
command via Power Delivery Protocol over the Communication Channel. USB Type-C active cables or
VCONN powered peripherals require VCONN. These cables or peripherals won't work in the above case.
Also communicating with e-Markers of cables will not be possible. Charging, USB and DisplayPort
functions using passive cables is not affected. The product has a strong preference toward becoming a
Power Source upon connecting a device. The product will source VBUS and VCONN most of the times,
therefore Vconn Swap command would only result in the connected device sourcing the Vconn, and
avoiding this issue.
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Properties in /SYS node may change in future releases.
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HPD signal is activated with up to 100ms delay compared to the 5V signal. This might cause compatibility
issue with some devices.
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If I1 input is selected by Autoselect after I5 input, the value of the following property might become
invalid: /MEDIA/VIDEO/I1/HDCP.ActiveHdcpVersion The video transmission is not affected, only the
displayed value of HDCP version is compromised.
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Properties of Audio XP do not reflect the limitations of the video XP. If I5 is in use on the video layer,
neither the video nor the audio content of I1 cannot be used.
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Ethernet port P5 is counting TX Ethernet packets even if there is no connection. /MEDIA/ETHERNET/
P5/COUNTERS.TxCounter Ethernet packet transmission on P5 is not affected by this issue. This
Ethernet port works as expected other than the incorrect TX counter value.
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If a USB Host without DisplayPort Alterante mode support is connected to one of the USB
Type-C connectors, then the ActiveAltMode property erroneously reads as DP. /V1/MEDIA/USB/
U1.ActiveAltMode=DP This issue causes Lightware Device Controller to erroneously display a yellow
""DP"" indicator on the port panel, which means the connection successfully entered DisplayPort
Alterante mode. The following property describing the DisplayPort Alterante mode capability of the
connected Host works as expected. /V1/MEDIA/USB/U1.HostSupportsDpAltMode=false USB and
Displayport Data transmission is not affected.
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An external control system using LW3 protocol subscribed to an HDMI output node OPEN /V1/
MEDIA/VIDEO/O1 might not receive all CHG messages related to the presence of embedded audio
on the output. For example if the video crosspoint switches beteen two sources: one with- and one
without embedded audio, then the following CHG messages might be missing: CHG /V1/MEDIA/
VIDEO/O1.EmbeddedAudioPresent=false CHG /V1/MEDIA/VIDEO/O1.EmbeddedAudioPresent=true
Transmission of the embedded audio stream from input to output is unaffected. Muting the audio also
works as expected.
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192kHz multichannel audio is only delivered as stereo to the outputs. Lower sampling rates are not affected.