Kramer VM-4DH User manual

Kramer Electronics, Ltd.
USER MANUAL



Model:
VM-4DH
1:4 HDMI / DisplayPort Distributor

Contents
i
Contents
1 Introduction 1
2 Getting Started 1
2.1 Quick Start 2
3 Overview 3
3.1 About DisplayPort 3
3.2 About HDMI 4
3.3 About HDCP 5
3.4 Defining EDID 5
3.5 Recommendations for Best Performance 5
4 Your VM-4DH 1:4 HDMI / DisplayPort Distributor 5
5 Installing the VM-4DH in a Rack 8
6 Using the VM-4DH 1:4 HDMI / DisplayPort Distributor 9
6.1 Connecting the VM-4DH 1:4 HDMI / DisplayPort Distributor 9
6.2 Setting the Dipswitches 11
6.3 Acquiring EDID 11
6.3.1 Acquiring the Default EDID 11
6.3.2 Acquiring the EDID from a Connected Output 12
7 Technical Specifications 12
Figures
Figure 1: VM-4DH 1:4 HDMI / DisplayPort Distributor 6
Figure 2: Connecting a VM-4HD 1:4 HDMI / DisplayPort Distributor 10
Figure 3: Dipswitch Settings 11
Tables
Table 1: VM-4DH 1:4 HDMI / DisplayPort Distributor Features 7
Table 2: VM-4DH Dipswitch Settings 11
Table 3: Technical Specifications of the VM-4DH 1:4 HDMI / DisplayPort Distributor 12

Introduction
1
1 Introduction
Welcome to Kramer Electronics! Since 1981, Kramer Electronics has been
providing a world of unique, creative, and affordable solutions to the vast
range of problems that confront the video, audio, presentation, and
broadcasting professional on a daily basis. In recent years, we have redesigned
and upgraded most of our line, making the best even better! Our 1,000-plus
different models now appear in 11 groups
1
that are clearly defined by
function.
Congratulations on purchasing your Kramer VM-4DH 1:4 HDMI /
DisplayPort Distributor, which is ideal for:
Multimedia applications
PC showrooms
The package includes the following items:
VM-4DH 1:4 HDMI / DisplayPort Distributor
Power cord
This user manual
2
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 cables
3
1 GROUP 1: Distribution Amplifiers; GROUP 2: Switchers and Matrix Switchers; GROUP 3: Control Systems; GROUP 4:
Format/Standards Converters; GROUP 5: Twisted-Pair Solutions; GROUP 6: Specialty AV Products; GROUP 7: Scan
Converters and Scalers; GROUP 8: Cables and Connectors; GROUP 9: Room Connectivity; GROUP 10: Accessories and
Rack Adapters; GROUP 11: Sierra Products
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.

Overview
3
3 Overview
The Kramer VM-4DH is a high quality 1:4 HDMI DisplayPort Distributor
that accepts an HDMI input, equalizes and reclocks the data, and distributes the
signal to two DisplayPort (DP) outputs and two HDMI outputs.
The VM-4DH features:
One HDMI input, two HDMI outputs, two DisplayPort outputs, four
output status LEDs, an active input status LED, as well as EDID read and
select buttons
Up to 2.7Gbps bandwidth per graphic channel
A maximum resolution of 2560x1600 pixels and a total maximum
bandwidth of 10.8Gbps over four lanes
Kramer re-Klocking™ and Equalization Technology, which rebuilds the
digital signal to travel longer distances
Enhanced EDID (Extended Display Identification Data) - the unit can
store and recall an EDID setting in non-volatile memory from either the
default EDID or a connected output, allowing convenient and reliable
connection to the source
Compliance to HDCP
High-resolution and rich colors and transports audio and multiple video
streams
Worldwide Power Supply – 100-240V AC
A standard 19” rack-mount size - 1U. Rack "ears" are included
3.1 About DisplayPort
DisplayPort (DP) is a new digital display interface standard for the PC
industry. It delivers the highest resolutions and sound quality.
In addition, DisplayPort:
Provides a simple interface between a PC and a display, projector or TV
Supports 1 to 4 data pairs ("lanes") at a transfer rate of 1.62Gb or 2.7Gb
per second
Has a maximum length of 15 meters for video transmission, at a
resolution of 1080p/60Hz and 3 meters for full bandwidth transmission
Video specs include a video path that supports 6 to 16 bits per color
channel, a maximum resolution of 2560x1600 pixels and a total maximum
bandwidth of 10.8Gbps over four lanes
Is backward-compatible with HDMI, DVI (Digital Visual Interface) and
VGA, via an appropriate adapter
Version 1.1 supports HDCP (see section 3.3)

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Overview
4
Supports two-way communication over its auxiliary channel between the
video source (for example, a PC) and the digital display, enabling new
functionality such as automatic configuration and one-button play
Replaces the interface needed between the PC and an external display, as
well as the low voltage differential signaling (LVDS) interface in
notebook computers, monitors, to connect to LCD panels
3.2 About HDMI
High-Definition Multimedia Interface (HDMI) is an uncompressed all-digital
1
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
2
:
Provides a simple
3
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 lengthy
4
cable
Supports standard, enhanced, high-definition video, and multi-channel
digital audio
5
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
Benefits consumers by providing superior, uncompressed digital video
quality via a single cable
6
, and user-friendly connector
Is backward-compatible with DVI (Digital Visual Interface)
Supports two-way communication between the video source (such as a
DVD player) and the digital television, enabling new functionality such as
automatic configuration and one-button play
HDMI has the capacity to support:
Existing high-definition video formats (720p, 1080i, and 1080p/60), as
well as standard definition formats such as NTSC or PAL
1 Ensuring an all-digital rendering of video without the losses associated with analog interfaces and their unnecessary digital-
to-analog conversions
2 HDMI, the HDMI logo and High-Definition Multimedia Interface are trademarks or registered trademarks of HDMI
licensing LLC
3 With video and multi-channel audio combined into a single cable, the cost, complexity, and confusion of multiple cables
currently used in A/V systems is reduced
4 HDMI technology has been designed to use standard copper cable construction at up to 15m
5 HDMI supports multiple 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
6 HDMI provides the quality and functionality of a digital interface while also supporting uncompressed video formats in a
simple, cost-effective manner

Your VM-4DH 1:4 HDMI / DisplayPort Distributor
5
3.3 About HDCP
High-Bandwidth Digital Content Protection (HDCP) standard
1
protects digital
video and audio signals transmitted over DisplayPort, HDMI or DVI
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.
3.4 Defining EDID
The Extended Display Identification Data (EDID
2
) is a data-structure,
provided by a display, to describe its capabilities to a graphics card (that is
connected to the display’s source). The EDID enables the VM-4DH to
“know” what kind of monitor is connected to the output. The EDID includes
the manufacturer’s name, the product type, the timing data supported by the
display, the display size, luminance data and (for digital displays only) the
pixel mapping data.
3.5 Recommendations for Best Performance
To achieve the best performance:
Connect 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)
Avoid interference from neighboring electrical appliances and position
your VM-4DH away from moisture, excessive sunlight and dust
4 Your VM-4DH 1:4 HDMI / DisplayPort Distributor
Figure 1 and Table 1 define the VM-4DH 1:4 HDMI / DisplayPort
Distributor:
1 Developed by Intel
2 Defined by a standard published by the Video Electronics Standards Association (VESA)

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Your VM-4DH 1:4 HDMI / DisplayPort Distributor
6
Figure 1: VM-4DH 1:4 HDMI / DisplayPort Distributor

Your VM-4DH 1:4 HDMI / DisplayPort Distributor
7
Table 1: VM-4DH 1:4 HDMI / DisplayPort Distributor Features
# Feature Function
1 ACTIVE LED Illuminates when the input is active
2 READ Button Press to read the EDID of the selected display
3
EDID
SELECT Button Select the desired output from which to acquire the EDID
information
4 OUTPUTS LEDs LEDs light when an output(s) is connected and active; LEDs
blink when selecting EDID (see section 6.3)
5 HDMI INPUT Connector Connects to the HDMI source
6 DP OUT DisplayPort Connectors
Connect to the DP acceptors (from 1 to 2)
7 HDMI OUT Connectors Connect to the HDMI acceptors (from 1 to 2)
8 DP OUT SETUP Dipswitches Setup dipswitches (see section 6.2)
9 Power Connector with Fuse AC connector enabling power supply to the unit
10 POWER Switch Illuminated switch for turning the unit ON or OFF

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Installing the VM-4DH in a Rack
8
5 Installing the VM-4DH in a Rack
This section describes what to do before installing in a rack and how to rack
mount.
Before Installing in a Rack How to Rack Mount
Before installing in a rack, be sure that the environment is
within the recommended range:
Operating temperature range +5º to +45º C (41º to 113º F)
Operating humidity range 10 to 90% RHL, non-condensing
Storage temperature range -20º to +70º C (-4º to 158º F)
Storage humidity range 5 to 95% RHL, non-condensing

CAUTION!!
When installing in a 19" rack, avoid hazards by taking
care that:
1. It is located within the recommended environmental
conditions, as the operating ambient temperature of a
closed or multi unit rack assembly may exceed the
room ambient temperature.
2. Once rack mounted, enough air will still flow around
the machine.
3. The machine is placed straight in the correct
horizontal position.
4. You do not overload the circuit(s). When connecting
the machine to the supply circuit, overloading the
circuits might have a detrimental effect on overcurrent
protection and supply wiring. Refer to the appropriate
nameplate ratings for information. For example, for
fuse replacement, see the value printed on the
product label.
5. The machine is earthed (grounded) in a reliable way
and is connected only to an electricity socket with
grounding. Pay particular attention to situations where
electricity is supplied indirectly (when the power cord
is not plugged directly into the socket in the wall), for
example, when using an extension cable or a power
strip, and that you use only the power cord that is
supplied with the machine.
To rack-mount a machine:
1. Attach both ear brackets to the
machine. To do so, remove the
screws from each side of the
machine (3 on each side), and
replace those screws through the
ear brackets.
2. Place the ears of the machine
against the rack rails, and insert the
proper screws (not provided)
through each of the four holes in the
rack ears.
Note that:
In some models, the front panel
may feature built-in rack ears
Detachable rack ears can be
removed for desktop use
Always mount the machine in the
rack before you attach any cables
or connect the machine to the
power
If you are using a Kramer rack
adapter kit (for a machine that is not
19"), see the Rack Adapters user
manual for installation instructions
(you can download it at:
http://www.kramerelectronics.com)

Using the VM-4DH 1:4 HDMI / DisplayPort Distributor
9
6 Using the VM-4DH 1:4 HDMI / DisplayPort Distributor
This section describes how to:
Connect the VM-4DH, see section 6.1
Set the dipswitches, see section 6.2
Acquire the EDID information, see section 6.3
6.1 Connecting the VM-4DH 1:4 HDMI / DisplayPort Distributor
To connect the VM-4DH, as illustrated in Figure 2, do the following:
1. Connect an HDMI source (for example, a DVD player) to the HDMI
INPUT connector.
2. Connect the four output connectors
1
, as follows:
DP OUT 1 DisplayPort connector to DP
2
acceptor 1 (for example, a PC
monitor)
DP OUT 2 DisplayPort connector to DP
2
acceptor 2 (for example, a PC
monitor)
HDMI OUT 1 connector to HDMI acceptor 1 (for example, a plasma
display)
HDMI OUT 2 connector to HDMI acceptor 2 (for example, an LCD
display)
3. Connect the power cord to the mains electricity (not shown in Figure 2).
4. Set the dipswitches, see section 6.2.
5. Turn ON the POWER on the rear panel.
6. Acquire the EDID, see section 6.3.
1 As required. Up to 4 outputs can be connected on the VM-4DH. Not all outputs need to be connected
2 You can connect the DP output to an HDMI acceptor by using an appropriate adapter and setting the dipswitches

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Using the VM-4DH 1:4 HDMI / DisplayPort Distributor
10
Figure 2: Connecting a VM-4HD 1:4 HDMI / DisplayPort Distributor

Using the VM-4DH 1:4 HDMI / DisplayPort Distributor
11
6.2 Setting the Dipswitches
Figure 3 defines the dipswitch factory default settings:
Figure 3: Dipswitch Settings
Table 2 defines the dipswitch settings:
Table 2: VM-4DH Dipswitch Settings
Dipswitch Function
DP 1 / HDMI Set to DP 1 when connecting DP OUT 1 to a DP acceptor
Set to HDMI when connecting DP OUT 1 to an HDMI acceptor via an
adapter
DP 2 / HDMI Set to DP 2 when connecting DP OUT 2 to a DP acceptor
Set to HDMI when connecting DP OUT 2 to an HDMI acceptor via an
adapter
AUTO / MANUAL Set to AUTO
1
to override the DP dipswitch settings. Otherwise, set to
MANUAL
NU Not used
6.3 Acquiring EDID
The VM-4DH initially operates with the default EDID. This means that you can
turn ON the power before connecting any of the acceptors or the source.
You can acquire the EDID from:
The default EDID, see section 6.3.1
A connected output, see section 6.3.2
6.3.1 Acquiring the Default EDID
To acquire the default EDID, do the following:
1. Press the SELECT button, as required, to reach a disconnected output.
The selected output LED blinks.
1 In the AUTO mode, the VM-4DH recognizes a DP connection via an adapter

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Technical Specifications
12
2. Press the READ button.
The READ button and the selected output blink.
The new EDID of the selected output is stored in the non-volatile
memory
1
when the READ button no longer blinks as well as the selected
output LED.
6.3.2 Acquiring the EDID from a Connected Output
To acquire the EDID, from a selected output, do the following:
1. Press the SELECT button, as required, to reach the desired connected
output from which you want to acquire the EDID.
The selected output LED blinks.
If the EDID of that output is different from the EDID currently stored in
the non-volatile memory, the READ button blinks.
2. Press the READ button.
The READ button and the selected output blink.
The new EDID of the selected output is stored in the non-volatile
memory
1
when the READ button no longer blinks as well as the selected
output LED.
7 Technical Specifications
Table 3 includes the technical specifications:
Table 3: Technical Specifications
2
of the VM-4DH 1:4 HDMI / DisplayPort Distributor
INPUT: HDMI Connector
OUTPUTS: 2 DisplayPort connectors, 2 HDMI connectors
BANDWIDTH: Supports up to 2.7Gbps bandwidth per graphic channel
COMPLIANCE WITH
HDMI STANDARD:
Supports: DisplayPort 1.1 and HDCP 1.3; HDMI 1.3 and HDCP 1.2
CONTROLS: SELECT and READ buttons for selecting and storing EDID information
INDICATOR LEDs: OUTPUTS 1 to 4, and ACTIVE LED
POWER SOURCE: 100-240V AC, 50/60Hz, 22VA
DIMENSIONS: 19-inch (W), 7-inch (D), 1U (H)
WEIGHT: 2.5kg (5.5lbs) approx.
ACCESSORIES: Power cord
OPTIONS: HDMI/HDMI male-to-male cables, HDMI/DisplayPort male-to-male cables,
DisplayPort/DisplayPort male-to-male cables, DisplayPort to HDMI adapters
1 And passed to the input
2 Specifications are subject to change without notice

13
LIMITED WARRANTY
WHO IS PROTECTED?
WHAT IS COVERED AND WHAT IS NOT COVERED
WHAT WE WILL PAY FOR AND WHAT WE WILL NOT PAY FOR
HOW YOU CAN GET WARRANTY SERVICE
LIMITATION OF IMPLIED WARRANTIES
EXCLUSION OF DAMAGES
CAUTION!
Kramer Electronics (hereafter ) warrants this product free from defects in material and workmanship under the
followingterms.
Kramer
HOW LONG IS THE WARRANTY
Labor and parts are warranted for seven years from the date of the first customer purchase.
Only the first purchase customer may enforce this warranty.
We will paylabor and material expensesfor covered items.We will notpayfor thefollowing:
Theliability of Kramer for any effective products is limited to the repair or replacement of the product at our option. Kramer shall
not be liable for:
Thiswarranty gives you specificlegalrights, and you may also have otherrights, which vary from place to place.
All products returned to Kramer forservice must have priorapproval. This may be obtained from your dealer.
Thisequipment has been tested todetermine compliance with the requirements of:
EN-50081: "Electromagnetic compatibility(EMC);
generic emissionstandard.
Residential, commercial and lightindustry"
EN-50082: "Electromagnetic compatibility(EMC) genericimmunitystandard.
Part 1: Residential, commercial and light industryenvironment".
CFR-47: FCC* Rules and Regulations:
Part 15: “Radio frequency devices
Subpart B Unintentional radiators”
Except as below, this warranty covers all defects in material or workmanship in this product. The following are not covered
by the warranty:
1. Any product which is not distributed by Kramer, or which is not purchased from an authorized Kramer dealer. If you are
uncertain as to whether a dealer is authorized, please contact Kramer at one of the agents listed in the Web site
www.kramerelectronics.com.
2. Any product, on which the serial number has been defaced, modified or removed, or on which the WARRANTY VOID
TAMPERED sticker has been torn,
3. Damage, deterioration or malfunction resulting from:
i) Accident, misuse, abuse, neglect, fire, water, lightning orother acts of nature
ii) Product modification, or failure to follow instructions supplied with the product
iii) Repair or attempted repair by anyone not authorized by Kramer
iv) Anyshipment of theproduct (claims must be presentedtothe carrier)
v) Removalor installationoftheproduct
vi) Anyother cause, whichdoes not relate to a product defect
vii) Cartons,equipment enclosures,cables or accessoriesusedinconjunctionwiththe product
1. Removal or installationscharges.
2. Costs of
initial technical adjustments (set-up), including adjustment of user controls or programming. These costs are the
responsibility of the Kramerdealer from whom the product was purchased.
3. Shipping charges.
1. To obtain service on you product, you must take or ship it prepaid to any authorized Kramer service center.
2. Whenever warranty service is required, the original dated invoice (or a copy) must be presented as proof of warranty
coverage, and should be included in any shipment of the product. Please also include in any mailing a contact name,
company, address, and a description of the problem(s).
3. For the name of the nearest Kramer authorized service center, consult your authorized dealer.
All implied warranties, including warranties of merchantability and fitness for a particular purpose, are limited in duration to
the length of this warranty.
1. Damage to other property caused by defects in this product, damages based upon inconvenience, loss of use of the product, loss
of time, commercialloss; or:
2. Any other damages, whether incidental, consequential or otherwise. Some countries may not allow limitations on how long an
implied warranty lasts and/or do not allow the exclusion or limitation of incidental or consequential damages, so the above
limitationsandexclusions maynotapplyto you.
Servicing the machines can only be done by an authorized Kramer technician. Any user who makes changes or
modifications to the unit without the expressed approval of the manufacturer will void user authority to operate the
equipment.
Usethe suppliedDC powersupply to feed power to the machine.
Please use recommended interconnection cablesto connect the machine to other components.
IF reattached, removed or otherwise interfered with.
* FCC and CE approved using STPcable (for twisted pair products)
NOTE:
Part1:

Kramer Electronics, Ltd.
Web site: www.kramerelectronics.com
E-mail: [email protected]
P/N: 2900-000410 REV 1
For the latest information on our products and a list of Kramer
distributors, visit our Web site: www.kramerelectronics.com,
where updates to this user manual may be found.
We welcome your questions, comments and feedback.
Caution
Safety Warning:
Disconnect the unit from the power supply before
opening/servicing.