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Transmitter - front
Transmitter - rear
Power
USB
USB
input
link A
link B
port
port
Video support
AdderLink XD522 works hard to transfer the highest possible video
bandwidth between the transmitter and receiver units. To allow for
the differing grades of CATx links used to join the transmitter and
receiver, AdderLink XD522 periodically checks the quality of link A
(the primary cable joining the transmitter and receiver). In this way it
can accurately determine which of two video transfer modes can be
supported. Please see the rear page for details about achieving good
quality links.
On the front panel, the HR indicator will illuminate when High Rate
mode is available, whereupon the available bandwidth for video
signals is more than doubled.
The manner in which bandwidth is made available to the two video
ports differs between the Low and High Rate modes, as described
here:
Low rate mode
Note: The example modes shown here are for illustrative purposes and are based
upon average requirements for current video displays. Video displays from some
manufacturers may consume more signal bandwidth than those shown here.
* All approximate video mode bandwidth figures are quoted with reduced blanking.
Front panel
Main
Optional
indicators
A
B
(see rear
link
link
page)
Primary and
Multi
secondary
function
DisplayPort
Serial
video
port
inputs
mini-TOSLINK
During low rate mode, the secondary video
port is disabled and a total bandwidth
of 148.5 MegaPixels per second is made
available to the primary video port. This
is more than enough to support a single
1080P video display.
Receiver - front
Headphone/
microphone
sockets
Receiver - rear
Audio
Power
line
function
input
in/out
Line In
jack supports
EDID management
AdderLink XD522 intelligently manages the EDID (Extended Display
Identification Data) information that each video display provides
(detailing their supported resolutions) before reporting them to
the host PC. In this way AdderLink XD522 can mask the resolution
modes that cannot be supported within the available bandwidth.
The display attached to Video port 1 will always be given priority. If
sufficient bandwidth does not exist for the modes declared by the
second display, then it will not be reported to the host PC.
High rate mode
This diagram indicates how the total bandwidth of the high rate mode can
be shared between the two video ports.
Video port 1 (which has priority) may take up 280 MegaPixels per second (of the
total 308 Mpix/sec bandwidth); while port 2 can use a maximum of 154 MPix/sec
(subject to port 1 using no more than 154 MPix/sec of the available total bandwidth).
True
Front panel
Emulation
indicators
Emulation
USB ports
(see rear
page)
Multi
Primary and
secondary
Serial
DisplayPort
port
video
outputs
True
Hi-Speed
USB port
USB port
Main
Optional
Audio
A
B
line
link
link
in/out
Line Out
jack supports
mini-TOSLINK
For example:
A single WQXGA
mode display could
consume nearly
all of the port 1
bandwidth alone,
or...
... two WUXGA
mode displays could
share the total
evenly.
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