Kramer VM-8DVI-R User Manual
Kramer Electronics, Ltd.
USER MANUAL
Model:
VM-8DVI-R
1:8 DVI Distributor
Contents
i
Contents
1
Introduction 1
2
Getting Started 1
3
Overview 1
4
Your VM-8DVI-R 1:8 DVI Distributor 2
5
Installing the VM-8DVI-R on a Rack 5
6
Connecting a VM-8DVI-R 1:8 DVI Distributor 6
6.1
The EDID Feature 7
6.1.1 Defining EDID 7
6.1.2 Acquiring the EDID 7
6.1.2.1 Acquiring or Restoring the Factory Default EDID 7
6.1.2.2 Automatically Acquiring the EDID 8
6.1.2.3 Manually Acquiring the EDID 8
6.2
Setting the Dipswitches 9
7
Technical Specifications 9
Figures
Figure 1: VM-8DVI-R 1:8 DVI Distributor 3
Figure 2: Connecting a VM-8DVI-R 1:8 DVI Distributor 6
Figure 3: VM-8DVI-R Dipswitches 9
Tables
Table 1: VM-8DVI-R 1:8 DVI Distributor Features 4
Table 2: Dipswitches settings 9
Table 3: Technical Specifications of the VM-8DVI-R 1:8 DVI Distributor 9
Introduction
1
1 Introduction
Welcome to Kramer Electronics (since 1981): a world of unique, creative and
affordable solutions to the infinite range of problems that confront the video,
audio and presentation professional on a daily basis. In recent years, we have
redesigned and upgraded most of our line, making the best even better! Our
350-plus different models now appear in 8 Groups1, which are clearly defined
by function.
Congratulations on purchasing your Kramer VM-8DVI-R 1:8 DVI
Distributor. The VM-8DVI-R is ideal for:
Multiple screen applications
Rental and staging
Each package includes the following items:
VM-8DVI-R 1:8 DVI Distributor
Power cord
This user manual2
2 Getting Started
We recommend that you:
Unpack the equipment carefully and save the original box and packaging
materials for possible future shipment
Review the contents of this user manual
Use Kramer high performance high resolution cables3
3 Overview
The Kramer VM-8DVI-R is a 1:8 distribution amplifier for DVI-D signals,
letting you connect the signal from a DVI source to up to 8 DVI acceptors.
The VM-8DVI-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-8DVI-R uses a uniquely
1 GROUP 1: Distribution Amplifiers; GROUP 2: Video and Audio Switchers, Matrix Switchers and Controllers; GROUP 3:
Video, Audio, VGA/XGA Processors; GROUP 4: Interfaces and Sync Processors; GROUP 5: Twisted Pair Interfaces;
GROUP 6: Accessories and Rack Adapters; GROUP 7: Scan Converters and Scalers; and GROUP 8: Cables and Connectors
2 Download up-to-date Kramer user manuals from our Web site at http://www.kramerelectronics.com
3 The complete list of Kramer cables is on our Web site at http://www.kramerelectronics.com
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Your VM-8DVI-R 1:8 DVI Distributor
2
designed PCB, which includes all the equalization, reclocking and amplifying
circuitry to provide 8 high-quality output signals.
In particular, the VM-8DVI-R:
Has 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 memory1, the EDID2 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
Has a default EDID for fast and efficient connection of the unit3
Has nine DVI-I connectors, which are compatible with all types of DVI cables
Is a cost-effective solution for distributing the TMDS4 signals used for
DVI, and uses state-of-the-art line drivers on each of the 8 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
Note that only the digital signal (DVI-D) is available on the DVI connector
The VM-8DVI-R fits in one vertical space of a standard 19” professional rack
enclosure (1U)5.
To achieve the best performance:
Connect only good quality connection cables, thus avoiding interference,
deterioration in signal quality due to poor matching, and elevated noiselevels (often associated with low quality cables)
Avoid interference from neighboring electrical appliances and position your
Kramer VM-8DVI-R away from moisture, excessive sunlight and dust
4 Your VM-8DVI-R 1:8 DVI Distributor
Figure 1 and Table 1 define the VM-8DVI-R 1:8 DVI Distributor:
1 While the machine is ON
2 EDID is Extended Display Identification Data (see section 6.1.1 for a detailed definition)
3 Lets you use the EDID default value when no display from which to read the EDID is connected
4 TMDS is Transition Minimized Differential Signaling, a technology for transmitting high-speed serial data. TMDS is used
to digitally send graphics data to modern digitally interfaced display monitors
5 With the ear racks attached (see section 5)
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