Wizard DP Extender
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3.2.7 Receiver video display connections
Two DisplayPort sockets are provided on the rear panel of the transmitter unit. When using high resolution video displays, it is
important that their video bandwidth requirements lie within the capabilities of the DisplayPort socket to which they are attached.
The bandwidth available at the two sockets on the receiver unit can be different and are greatly affected by the mode in which
the Wizard DP Extender system is running. Please see
Video support
for details about high and low rate video modes and sup-
ported resolutions.
The link capacity (between transmitter and receiver) is checked periodically to determine which rate mode can be supported.
Checks are generally made: When the units are powered up; when the main CATx link is made; if cables are disconnected or if
the CATx link is lost for some other reason such as electrical interference. You can choose which rate mode is preferred (see
Using hotkeys
).
3.2.7.1 Support for other video standards
Both sockets support the DP++ (aka: DisplayPort Dual-Mode) standard, which means that as well as providing high resolution
DisplayPort signals they can also sense when a single-link HDMI or DVI adaptor is attached. When this occurs, the output sig-
nals are adjusted accordingly to support those display types. Additionally, a (more complex) dual-link DVI adaptor can be
attached (to port 1 only), which provides higher resolution signals for special DVI displays. Some adaptors use power from the
video socket whereas others require an external power supply and this is usually gained from a spare USB socket. Port 1 can
provide a higher bandwidth than port 2 (which is limited to a maximum of 154Mpixels/per second). Single-link DVI can require
up to 165Mpixels/per second.
3.2.7.2 EDID management
Wizard DP Extender
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 Wizard DP Extender 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 report-
ed to the host PC. EDID information is checked whenever a new monitor connection is sensed whereupon it is passed to the PC.
