Kramer VM-4HDCP User Manual

Kramer Electronics, Ltd.

USER MANUAL

Model:

VM-4HDCP

1:4 DVI Distributor

Contents

i

Contents

1

Introduction 1

2

Getting Started 1

2.1

Quick Start 2

3

Overview 3

3.1

About HDCP 3

3.2

Defining EDID 4

3.3

Recommendations for Best Performance 4

4

Your VM-4HDCP 1:4 DVI Distributor 4

5

Installing the VM-4HDCP on a Rack 7

6

Connecting a VM-4HDCP 1:4 DVI Distributor 8

6.1

Acquiring EDID 9

6.1.1 Acquiring the EDID from a Selected Output 9

6.1.2 Restoring the Default EDID 9

7

Technical Specifications 10

Figures

Figure 1: VM-4HDCP 1:4 DVI Distributor 5
Figure 2: Connecting a VM-4HDCP 1:4 DVI Distributor 8

Tables

Table 1: Front Panel VM-4HDCP 1:4 DVI Distributor Features 6
Table 2: Rear Panel VM-4HDCP 1:4 DVI Distributor Features 6
Table 3: Technical Specifications of the VM-4HDCP 1:4 DVI Distributor 10

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
500-plus different models now appear in 8 Groups1, which are clearly defined
by function.

Congratulations on purchasing your Kramer VM-4HDCP 1:4 DVI
Distributor. The VM-4HDCP is ideal for:

 Multiple screen applications

 Rental and staging

Each package includes the following items:

 VM-4HDCP 1:4 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

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

Getting Started

2

2.1 Quick Start

This quick start chart summarizes the basic setup and operation steps.

Acquiring the EDID from a selected output











Turn ON the power

Press the SELECT button to cycle
from one output to another until you
reach the desired output

Turn ON the power

Press the READ button

Turn OFF the power

Restoring the default EDID









Disconnect the outputs

Turn OFF the power

Turn ON the power

Press the READ button

Projector

Display

Display

Display

Overview

3

3 Overview

The Kramer VM-4HDCP, is an HDCP (High-Bandwidth Digital Content
Protection)1 compatible 1:4 distribution amplifier for DVI-D (Digital)
signals2. Since high-resolution DVI signals are very sensitive to cable quality
and to PCB layout, the VM-4HDCP uses a uniquely designed PCB which
includes all buffering, conditioning and amplifying circuitry to provide four
high-level output signals.

In particular, the VM-4HDCP:

 Distributes signals having resolutions up to UXGA, including all HDTV

formats

 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 memory, the EDID3 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 unit4

 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

The VM-4HDCP fits in one vertical space of a standard 19” professional
rack enclosure (1U).

3.1 About HDCP

The High-Bandwidth Digital Content Protection (HDCP) standard5, protects
digital video and audio signals transmitted over DVI or HDMI connections
between two HDCP-enabled devices to eliminate the reproduction of
copyrighted material. To protect copyright holders (such as movie studios)
from having their programs copied and shared, the HDCP standard provides
for the secure, encrypted transmission of digital signals.

1 Note that Kramer Electronics Limited is an HDCP Licensee, see http://www.digital-cp.com/list/

2 For HDMI applications, use the Kramer VM-4HDMI

3 EDID is Extended Display Identification Data

4 The default EDID feature lets you connect the VM-4HDCP without having to connect a display to the output

5 Developed by Intel