Kramer VM-24H User manual

KRAMER ELECTRONICS LTD.
USER MANUAL
MODEL:
VM
-24H
2
Input 1:4 HDMI Distributor
P/N: 2900-000664 Rev 4

VM-24H – 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-24H 2 Input 1:4 HDMI Distributor 4
3.2 Using the IR Transmitter 7
4Installing in a Rack 8
5Connecting the VM-24H 9
6Operating the VM-24H 11
6.1 Controlling via RS-232 11
6.2Operating the VM-24H 12
6.3 Using the EDID Buttons 12
7Technical Specifications 15
8Communication Protocol 16
8.1 Syntax 16
8.2 Instruction Codes 17
Figures
Figure 1: VM-24H 2 Input 1:4 HDMI Distributor Front Panel 5
Figure 2: VM-24H 2 Input 1:4 HDMI Distributor Rear Panel 6
Figure 3: Connecting the VM-24H 2 Input 1:4 HDMI Distributor 10
Figure 4: Crossed Cable RS-232 Connection 11
Figure 5: Straight Cable RS-232 Connection with a Null Modem Adapter 12

VM-24H - 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-24H 2Input 1:4 HDMI Distributor,
which is ideal for the following typical applications:
•Home theater, presentation and multimedia applications
•Rental and staging

2 VM-24H - 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-24H 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-24H - Getting Started
3
2.2 Safety Instructions
Caution:
There are no operator serviceable parts inside the unit
Warning:
Use only the power cord that is supplied with the unit
Warning: Do not open the unit. High voltages can cause
electrical shock! Servicing by qualified personnel only
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-24H - Overview
3 Overview
The VM−24H is a distribution amplifier for HDMI signals. The unit reclocks and
equalizes one of two selectable input signals and distributes it to four identical
outputs.
The VM-24H features:
•A maximum data rate of 6.75Gbps ( 2.25Gbps per graphic channel)
•HDMI support for Deep Color, x.v.Color™, Lip Sync, CEC
•3D pass-through
•I-EDIDPro™ Kramer Intelligent EDID Processing™, an intelligent EDID
handling and processing algorithm that ensures Plug and Play operation for
HDMI systems
•The ability to acquire the EDID from one output, from several connected
outputs (auto-mix) or acquire the default EDID for fast and efficient
connection of the unit
•Housing in a 19" 1U rack mountable enclosure
•Power feeding from a 100-240V AC universal switching power supply
Control the VM-24H via:
•The front panel buttons
•The infrared remote control transmitter
•The infrared remote extension cable transmitter, see Section 3.2
•RS-232 serial commands transmitted by a touch screen system, PC, or other
serial controller
3.1 Defining the VM-24H 2 Input 1:4 HDMI Distributor
This section defines the VM-24H.

VM-24H - Overview
5
VM-24H – Overview 5
Figure 1: VM-24H 2 Input 1:4 HDMI Distributor Front Panel
#
Feature
Function
1
IR Receiver
The red LED is illuminated when receiving signals from the Kramer infrared remote control transmitter
2
POWER Switch
Illuminated switch for turning the unit ON or OFF
3
SELECT IN 1 Button
Press to select source 1 and distribute this signal to the outputs
4
SELECT IN 2 Button
Press to select source 2 and distribute this signal to the outputs
5
EDID READ Button
Press, after pressing the EDID SELECT button, to acquire the EDID Press to show the EDID status
6
EDID SELECT Button
Select the EDID mode (One Output, Auto-mix or Default)
7
OUTPUT STATUS 1-4
LEDs
LEDs light when an output(s) is connected and active; LEDs flash to indicate the type of EDID
acquired (see Section 6.3) or when connecting a non-HDCP display while providing HDCP content to
the
VM-24H

6 VM-24H - Overview
Figure 2: VM-24H 2 Input 1:4 HDMI Distributor Rear Panel
#
Feature
Function
8
INPUT 1 HDMI Connector
Connects to the HDMI source 1
9
INPUT 2 HDMI Connector
Connects to the HDMI source 2
10
OUTPUT HDMI Connectors
Connects to the HDMI acceptor (from 1 to 4)
11
RS-232 9-pin D-sub Port
Connects to the PC or the Remote Controller (via a null modem connection)
12 REMOTE IR Opening Connects to an external IR receiver unit for controlling the machine via an IR remote
controller instead of using the front panel IR receiver
Optional. Can be used instead of the front panel (built-in) IR receiver to remotely control the
machine (only if the internal IR connection cable has been installed)
13
Power Connector with Fuse
AC connector enabling power supply to the unit
6VM-24H – Overview

VM-24H - Overview
7
3.2 Using the IR Transmitter
You can use the RC-IR3 IR transmitter to control the machine via the built-in IR
receiver on the front panel or, instead, via an optional external IR receiver (Model:
C-A35M/IRR-50). The external IR receiver can be located up to 15 meters away
from the machine. This distance can be extended to up to 60 meters when used
with three extension cables (Model: C-A35M/A35F-50).
Before using the external IR receiver, be sure to arrange for your Kramer dealer to
insert the internal IR connection cable (P/N: 505-70434010-S) with the 3.5mm
connector that fits into the REMOTE IR opening on the rear panel. Connect the
external IR receiver to the REMOTE IR 3.5mm connector.