Overview
3
3 Overview
The Kramer
VM-4DVI-R
is a 1:4 distribution amplifier for DVI-D (Digital)
signals. It is one of Kramer’s high quality digital products, allowing
one or more
of the outputs to be connected to receiving devices, thus making it a versatile,
reliable component in a video system. The
VM-4DVI-R
distributes signals
having resolutions up to UXGA, including all HDTV formats. Since high-
resolution DVI signals are very sensitive to cable quality
and to PCB layout, the
VM-4DVI-R
uses a uniquely designed PCB which includes all buffering,
conditioning and amplifying circuitry to provide four high-level output signals.
In particular, the
VM-4DVI-R
:
Includes a bandwidth of 1.65GHz
Supports the DDWG DVI 1.0 standard
Consists of a built-in re-clocking block that re-generates the DVI signal,
so that several units may be cascaded
Can read and store, in non-volatile memory, the EDID
1
block from one of
the outputs, so it can then provide the EDID information to the DVI
source even if the display device is not connected
Stores a default EDID for fast and efficient connection of the unit
2
Has five DVI-I connectors, which are compatible with all types of DVI
cables
Is a cost-effective solution for distributing the TMDS signals used for
DVI, and uses state-of-the-art line drivers on each of the 4 outputs
Can be used in any application where multiple DVI monitors, projectors
or other receiving devices are to be driven via a single DVI source
The
VM-4DVI-R
fits in one vertical space of a standard 19” professional rack
enclosure (1U).
Achieving the best performance means:
Connecting only good quality connection cables, thus avoiding
interference, deterioration in signal quality due to poor matching, and
elevated noise levels (often associated with low quality cables)
Avoiding interference from neighboring electrical appliances and positioning
your
VM-4DVI-R
away from moisture, excessive sunlight and dust
4 Your VM-4DVI-R 1:4 DVI Distributor
Figure 1 and Table 1 define the
VM-4DVI-R
1:4 DVI Distributor
:
1 EDID is Extended Display Identification Data
2 The default EDID feature lets you connect the VM-4DVI-R without having connect a display to the output
