Background Information; Support Of Any Graphics Resolutions; E-Edid Transmission With Cache Function - G&D DP1.2-VisionXG-Fiber Installation Und Bedienung

Background information

Background information

Support of any graphics resolutions

The KVM extender basically supports almost any resolution that can be transmitted
according to the DisplayPort 1.2a specification. This restriction mainly affects the
pixel rate, which can reach from 25 MHz to 600 MHz MHz.
During single link operation, the common VESA DMT and VESA SMT timing
standards enable resolutions between 640 × 480 pixels at 60 Hz and 4096 × 2160 pix-
els at 60 Hz.
4096 × 2160 pixels at 60 Hz are transmitted according to VESA CVT-RB and CEA861
at full colour resolution of RGB 4:4:4 (24 Bit).
Almost any refresh rate and resolution within the technical constraints are possible.
The available display modes are largely dependent on the graphics card, the gra-
phics driver, the operating system and the connected monitor.
The video data that are transmitted from the computer to the computer module
(
DP1.2-VisionXG-CPU
nal's frequency and display position at the computer module therefore correspond
to those of the graphics output.
The DisplayPort standard allows the partial use of existing lanes or the reducing of
the transmission speed for long connecting cables.
IMPORTANT: Only if the graphics card, the cable and the screen allow all four
lanes at full speed (HBR High Bit Rate), all previously described video formats
and resolutions can be achieved.

E-EDID transmission with cache function

The KVM Extender reads out the E-EDID profile (Enhanced Extended Display Identifica-
tion Data) of the monitor connected to the user module and transmits it to the com-
puter.
The E-EDID profile contains, for example, information about the preferred resolu-
tion and the supported frequencies of the monitor.
In order that the computer connected to the computer module (
can already access the features of the remote monitor during booting, the KVM
extender contains a cache function. Even if the computer module or the user mod-
ule are switched off or if the devices are not interconnected, the properties of the
most recently connected monitor or a default data block are provided in the KVM
extender.
57 · G&D DP1.2-VisionXG-Fiber
) are transferred to the monitor of the remote console. The sig-
DP1.2-VisionXG-CPU )