Hama VM-4HDMI operation manual

Kramer Electronics, Ltd.

USER MANUAL

Model:

VM-4HDMI

1:4 HDMI Distributor

Contents

Contents

1 Introduction 1
2 Getting Started 1
3 Overview 1

3.1 About HDMI 2

3.2 Defining EDID 3

3.3 Recommendations for Best Performance 3

4 Your VM-4HDMI 1:4 HDMI Distributor 3
5 Connecting a VM-4HDMI 1:4 HDMI Distributor 6

5.1 Acquiring EDID 8

5.1.1 Acquiring the EDID from a Selected Output 8

5.1.2 Restoring the Default EDID 8

6 Technical Specifications 9

Figures

Figure 1: VM-4HDMI 1:4 HDMI Distributor 4
Figure 2: Connecting a VM-4HDMI 1:4 HDMI Distributor 7

Tables

Table 1: VM-4HDMI 1:4 HDMI Distributor Features 5
Table 2: Technical Specifications of the VM-4HDMI 1:4 HDMI Distributor 9

i

Introduction

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-4HDMI 1:4 HDMI
Distributor. The VM-4HDMI is ideal for:

@ Home theater, presentation and multimedia applications

@ Rental and staging

The package includes the following items:

@ VM-4HDMI 1:4 HDMI 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-4HDMI is a high quality 1:4 HDMI distributor that accepts
an HDMI input and distributes the signal to four outputs, 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-4HDMI distributes
signals having resolutions up to UXGA, including all HDTV formats.

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.kr amerelectronics.com

1

Overview

In particular, the VM-4HDMI:

@ Supports up to 1.65Gbps bandwidth per graphic channel1

@ Equalizes and reclocks the data

@ Features a default EDID for fast and efficient connection of the unit2

@ 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 HDMI
source even if the display device is not connected

@ Includes five HDMI connectors, four output status LEDs, an active status

LED, as well as EDID read and select buttons.

The VM-4HDMI is housed in a 19" 1U rack-mountable enclosure, and is fed
from a 100-264 VAC universal switching power supply.

3.1 About HDMI

High-Definition Multimedia Interface (HDMI) is an uncompressed all-digital4
audio/video interface, widely supported in the entertainment and home cinema
industry. It delivers the highest high-definition image and sound quality.

In particular, HDMI:

@ Provides a simple5 interface between any audio/video source, such as a

set-top box, DVD player, or A/V receiver and video monitor, such as a
digital flat LCD / plasma television (DTV), over a single lengthy6 cable

@ Supports standard, enhanced, high-definition video, and multi-channel

digital audio7 on a single cable

@ Transmits all ATSC HDTV standards and supports 8-channel digital audio,

with bandwidth to spare to accommodate future enhancements and
requirements

1 Suitable for resolutions up to UXGA at 60Hz, and for all HD resolutions

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

3 EDID is Extended Display Identification Data

4 Ensuring an all-digital rendering of video wit hout the losses associated with analog interfaces and their unnecessary digital-

to-analog conversions

5 With video and mu lti-channel au dio comb ined into a single cable, the cost, complexity, and confusion of multiple cables

currently used in A/V systems is reduced

6 HDMI technology has been designed to use standard copper cable construction at up to 15m

7 HDMI supports mu ltiple audio formats, from standard stereo to multi-channel surround-sound. HDMI has the capacity to

support Dolby 5.1 audio and high-resolution audio formats

2

KRAMER: SIMPLE CREATIVE TECHNOLOGY