G&D DVIVision, Инструкция по установке и эксплуатации

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Continuative information
G&D DVIVision · 33
USB and PS/2 signals of the variants -ARU and -U
If you use a variant of DVIVision that supports USB devices, it is necessarily required
to connect the USB CPU interface of the computer module (DVIVision-CPU) with the
USB interface of the computer. The data of the USB devices are transmitted to the
computer through this interface.
The signals of keyboard and mouse are also transmitted through this USB connection.
If you prefer to transmit the signals of keyboard and mouse through the PS/2 inter-
faces, connect the interfaces Mouse CPU and Keyb. CPU with the PS/2 interfaces of
the computer.
Supporting any resolution
In principle, the DVIVision system supports all resolutions that can be transmitted
through a single link interface according to the DVI specification 1.0.
This restriction mainly affects the pixel rate, which can reach from 25 MHz to
165 MHz. Therefore, resolutions between 640 x 480 pixels at 60 Hz and 1600 x 1200
pixels at 60 Hz are possible for the common timing standards by VESA DMT and
VESA SMT. 1920 x 1200 pixels at 60 Hz is transmitted according to VESA CVT-RB.
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
(DVIVision-CPU) are transferred to the monitor of the remote console with the
same timing. The signal’s frequency and display position at the computer module
therefore correspond to those of the graphics output.
Note:
While generating the video signal, some graphics cards differentiate
between digital and analog output. Such graphics cards generate digitally
output image signals with partly non-standardised timings. Such timings
do not comply with the monitor’s default to reduce the frequencies of the
digital signals.
Normally, this does not affect the DVIVision system and the digitally con-
nected displays. Due to the non-standardised timing, analog monitors
might not be able to display the image size and the image position properly.