Kramer VM-24HC User manual

KRAMER ELECTRONICS LTD.
USER MANUAL
MODEL:
VM-24HC
2Input 1:4 HDMI Distributor
P/N: 2900-000717 Rev 3

VM-24HC – Contents
i
Contents
1Introduction 1
2Getting Started 2
2.1 Achieving the Best Performance 2
2.2 Safety Instructions 3
2.3 Recycling Kramer Products 3
3Overview 4
3.1 Defining the VM-24HC 2 Input 1:4 HDMI Distributor 5
4Connecting the VM-24HC 6
5Using the VM-24HC 2 Input 1:4 HDMI Distributor 8
5.1 Selecting an Active Input 8
5.2 Connecting a PC/Controller via RS-232 8
5.3 Acquiring the EDID 9
6Technical Specifications 11
7Default Communication Parameters 12
8Default EDID 13
9Protocol 2000 15
9.1 Syntax 15
9.2 Instruction Codes 16
Figures
Figure 1: VM-24HC 2 Input 1:4 HDMI Distributor 5
Figure 2: Connecting the VM-24HC 2 Input 1:4 HDMI Distributor 7

VM-24HC - 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 video, audio, presentation, and broadcasting professionals
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 that are clearly defined
by function: GROUP 1: Distribution Amplifiers; GROUP 2: Switchers and Routers;
GROUP 3: Control Systems; GROUP 4: Format/Standards Converters; GROUP 5:
Range Extenders and Repeaters; 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 and GROUP 11:
Sierra Products.
Congratulations on purchasing your Kramer VM-24HC 2Input 1:4 HDMI
Distributor, which is ideal for the following typical applications:
Home theater, presentation and multimedia applications
Rental and staging

2
VM-24HC - Getting Started
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
Go to http://www.kramerelectronics.com/support/product_downloads.asp
to check for up-to-date user manuals, application programs, and to check if
firmware upgrades are available (where appropriate).
2.1 Achieving the Best Performance
To achieve the best performance:
Use only good quality connection cables (we recommend Kramer high-
performance, high-resolution cables) to avoid interference, deterioration in
signal quality due to poor matching, and elevated noise levels (often
associated with low quality cables)
Do not secure the cables in tight bundles or roll the slack into tight coils
Avoid interference from neighboring electrical appliances that may adversely
influence signal quality
Position your Kramer VM-24HC away from moisture, excessive sunlight and
dust
This equipment is to be used only inside a building. It may only be
connected to other equipment that is installed inside a building.
i
!

VM-24HC - Getting Started
3
2.2 Safety Instructions
Caution:
There are no operator serviceable parts inside the unit
Warning:
Use only the Kramer Electronics input power wall
adapter that is provided with the unit
Warning:
Disconnect the power and unplug the unit from the wall
before installing
2.3 Recycling Kramer Products
The Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC
aims to reduce the amount of WEEE sent for disposal to landfill or incineration by
requiring it to be collected and recycled. To comply with the WEEE Directive,
Kramer Electronics has made arrangements with the European Advanced
Recycling Network (EARN) and will cover any costs of treatment, recycling and
recovery of waste Kramer Electronics branded equipment on arrival at the EARN
facility. For details of Kramer’s recycling arrangements in your particular country
go to our recycling pages at http://www.kramerelectronics.com/support/recycling/.
!

4
VM-24HC - Overview
3 Overview
The VM−24HC is a high−performance switcher and distribution amplifier for HDMI
signals. The unit accepts one of two HDMI inputs and distributes the selected
signal to four HDMI outputs simultaneously.
The VM-24HC features:
A maximum data rate of 6.75Gbps (2.25Gbps per graphics channel)
HDTV compatibility
HDCP compliance
I-EDIDPro™ Kramer Intelligent EDID Processing™, an intelligent EDID
handling & processing algorithm ensures Plug and Play operation for HDMI
systems
EDID handling that acquires the EDID from one output, from all connected
outputs (auto−mix) or uses a default EDID
Kramer Equalization & re-Klocking™ Technology that rebuilds the digital
signal to travel longer distances
HDMI support for Deep Color, x.v.Color™, up to 7.1 Uncompressed Audio
Channels
3D Pass-Through
Flexible control options via front panel, IR remote & RS−232
Compact desktop size where two units can be rack mounted side−by−side in
a 1U rack space with the optional RK−1 adapter

VM-24HC - Overview
5
3.1 Defining the VM-24HC 2 Input 1:4 HDMI Distributor
This section defines the VM-24HC.
Figure 1: VM-24HC 2 Input 1:4 HDMI Distributor
#
Feature
Function
1
IR Receiver
IR signal sensor for the IR remote control
2
IR LED
Lights yellow when the device receives an IR signal
3
POWER LED
Lights green when the device receives power
4
EDID READ Button
Press to acquire the EDID following selecting the EDID
source. Press again to indicate the EDID status
5
EDID SELECT Button
Press to select the EDID source (single output, Auto-
Mix or default)
6
OUTPUT LEDs (1 to 4)
Lights green when an output is connected and active.
LED flashes to indicate the source of the EDID
acquired (see Section 5.3) or when connecting a
non-HDCP display while providing HDCP content to
the VM-24HC
7
INPUT SELECTOR Button
Press to select Input 1 or 2 (see Section 5.1)
8
IN 1 LED
Lights green when Input 1 is selected
IN 2 LED
Lights green when Input 2 is selected
9
INPUT 1 and INPUT 2 HDMI
Connectors
Connect to the HDMI sources 1 and 2
10
OUTPUT 1 to OUTPUT 4
HDMI Connectors
Connect to the HDMI acceptors 1 to 4
11
RS-232 9-pin D-sub Port
Connects to a PC/remote controller (see Section 5.1)
12
5V DC Power Connector
Connects to the power adapter, center pin positive

6
VM-24HC - Connecting the VM-24HC
4 Connecting the VM-24HC
Always switch off the power to each device before connecting it to your
VM-24HC. After connecting your VM-24HC, connect its power and
then switch on the power to each device.
To connect the VM-24HC as illustrated in the example in Figure 2:
1. Connect the two HDMI sources, for example, a DVD player and a set top
box to the INPUT 1 and INPUT 2 connectors, respectively.
2. Connect the HDMI OUTPUT connectors to up to 4 HDMI acceptors. In this
example, connect:
Not all outputs need be connected.
OUTPUT 1 to display device 1 (for example, an LCD TV)
OUTPUT 2 to display device 2 (for example, an LCD TV)
OUTPUT 3 to display device 3 (for example, an LCD TV)
OUTPUT 4 to display device 4 (for example, a plasma display)
3. If required, connect a PC and/or controller to the RS-232 port (see
Section 5.1).
4. Connect the power adapter to the device and to the mains electricity (not
shown in Figure 2).
5. If required, acquire the EDID (see Section 5.3).
i

VM-24HC - Connecting the VM-24HC
7
Figure 2: Connecting the VM-24HC 2 Input 1:4 HDMI Distributor