5. Device Concept UCX series – User's Manual 28
DisplayPort Alternate Mode and USB 3.x Mixed
The two different signals (video and USB 3.x) can be transmitted at the same time with shared bandwidth.
DP video reserves 2x Superspeed Channels for the video signal in alternate mode. 2x Superspeed Channels
for USB 3.x or via
section).
Thunderbolt Compatibility
Thunderbolt 3 standard uses USB-C connector to transmit data. The standard is compatible backwards,
so it is able to fallback Displayport Alternate mode. In this case, the maximum bandwidth of transmitted
video signal based on the connected sink capability ( e.g. HBR2, 5.4Gbps per lane in case of UCX-4x2-HC30
switcher).
The Autoselect Feature
DIFFERENCE:
Beside of manual selecting of crosspoints you can choose the Autoselect option in case of video and USB ports.
▪ using the front panel buttons
▪
▪
▪ using the Autoselect function.
There are three Autoselect policy as follows:
▪ Disable autoselect
▪ First detect
▪
▪ Follow video (in case of USB and audio ports)
INFO: SignalPresent cannot be sensed on I1 if i5 is displayed due to the mutually exclusive operation of
and the video XP will be switched to I1 upon connecting a Host computer to I1 regardless the computer
sends Displayport image or not.
DP1.2
HBR2
(5.4 Gbps)
USB 3.1
Individual input settings
detect operation modes. It overrides the chronological order of the appearance of the active video signal.
Always the highest priority active input is selected to transmit (1- highest priority, 100- lowest priority).
TIPS AND TRICKS: To use the individual input settings, change the default priority settings from 1 to 5
depending on their importance (e.g. I1 priority:1; I2 priority:2; I3 priority:3; I4 priority:4; I5 priority:5 ).
ATTENTION! The autoselect function remains active after the manual crosspoint switching. This operation
Disable autoselect
The crosspoint state change only happens manually.
First detect
The selected input port is kept connected to the output as long as it has an active signal.
The crosspoint changes, when the signal becomes inactive on the chosen input, or when the video signal
appears on a higher priority port.
TIPS AND TRICKS:
Last detect
Always the last attached input is selected to transmit. The crosspoint changes, when the signal becomes
inactive on the chosen input, or when the active video signal appears on a port with the same or higher
priority.
TIPS AND TRICKS: To prevail the last detect mode, default priority settings (I1 priority:50; I2 priority:50; I3
priority:50; I4 priority:50; I5 priority:100 ) are appropriate.
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