respect to the input), the new EDID is copied to that input and the source will receive a hotplug
event to read the new EDID data.
If the input is unused (i.e. not routed to ANY output), then consequently there is no EDID available
at that input, and the presence signal (hotplug) is removed for that input.
C)
EDID pass-through („THROGH“):
In that mode, the DVI input’s display data channel (DDC) is electrically connected to the DDC of the
output it is connected to. The video source is now reading the EDID directly from the displaying de-
vice, without any modification. In doing so, DXS-XX is supporting HDCP encrypted video content, be-
cause this encryption requires that video source and displays permanentely negotiate the current en-
cryption keys for the video content.
The pass-through mode works out only if the input is in a point-to-point configuration. If the routing
switches to point-to-multipoint (including the current input), then the first routed connection will con-
tinue direct connection, but the additional display will show no video info or only white noise, be-
cause on the addition output, HDCP decryption won’t work.
If such a point-to-multipoint configuration is realized using presets, then the DDC connection will al-
ways go to the output with the lowest number assigned to that input.
If the input is unused (not connected) or connected to an output without an display attached, the
source will read no EDID information.
At power off system state, all inputs fall back to static mode (A). They will show their last valid EDID content if
read by a DVI source.
You can configure each input’s EDID behaviour using console (“edid_mode” command) or via WEB interface (us-
ing the “configure inputs” menu item).
To handle the static EDIDs, the DXS-XX has a so called “EDID bank manager”, where you can read and store
EDIDs from your displaying devices and assign it to some or all inputs. You can handle this by console access
(commands “edid_read” and “edid_write”) or even more simple by WEB interface.
Summary of Contents for DXS-44
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