Kramer VM-73 User manual

KRAMER ELECTRONICS LTD.
USER MANUAL
MODEL:
VM-73
Multiformat 1:3 Distribution
Amplifier
P/N: 2900-000544 Rev 3

VM-73 – Contents i
Contents
1Introduction 1
2Getting Started 2
2.1 Achieving the Best Performance 2
2.2 Recycling Kramer Products 2
3Overview 3
3.1 Defining the VM-73 Multiformat 1:3 Distribution Amplifier 3
4Installing in a Rack 5
5Connecting the VM-73 6
5.1 Reading the EDID 8
6Technical Specifications 9
Figures
Figure 1: UVM-73UMultiformat 1:3 Distribution Amplifier Front Panel 4
Figure 2: Connecting the UVM-73UMultiformat 1:3 Distribution Amplifier 7

VM-73 - 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-73 Multiformat 1:3 Distribution
Amplifier, which is ideal for the following typical applications:
•Video reproduction in studios
•School and university presentations

2 VM-73 - 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
•Use Kramer high-performance, high-resolution cables
•Use only the power cord that is supplied with this machine
Go to http://www.kramerelectronics.com 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 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-73 away from moisture, excessive sunlight and
dust
2.2 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/.
i

VM-73 - Overview 3
3 Overview
The VM-73 is a high-performance distribution amplifier for HDMI, computer
graphics, component video, s-Video and composite video signals. The unit takes
one input of each video format and distributes each input to three identical outputs.
Specifically, the VM-73 features:
•Multiformat operation: composite, component, Y/C, XGA and HDMI
•High bandwidth (-3dB) of 430MHz for composite video, 440MHz for Y/C,
430MHz for component video, 405MHz for XGA and 2.25Gbps for HDMI
•HDTV compatibility
•HDMI and HDCP compatibility
•The ability to pass EDID information from PC OUT 1 to the PC input
•The option to acquire the EDID information from the highest priority
connected HDMI output
OUT 1 being the highest priority output and OUT 3 the lowest (see Section5.1.2)
•A worldwide power supply 100-240V AC
•A standard 19” rack mount size, rack “ears” included
3.1 Defining the VM-73 Multiformat 1:3 Distribution
Amplifier
This section defines the VM-73.

4 VM-73 - Overview
Figure 1: VM-73 Multiformat 1:3 Distribution Amplifier Front Panel
# Feature Function
1 POWER LED Lights green when receiving power
2 HDMI INPUT Connector Connects to the HDMI source
3 HDMI OUT Connectors Connect to the HDMI acceptors (1 to 3)
4 PC INPUT 15-pin HD Connector Connects to the computer graphics source
5 PC OUT 15-pin HD Connectors Connect to the computer graphic acceptors (1 to 3)
6 COMP. INPUT RCA Connectors Connects to the component video source
7 COMP. OUT RCA Connectors Connect to the component video (Y/Pr/Pb) acceptors (1 to 3)
8 Y/C INPUT s-Video Connector Connects to the Y/C video source
9 Y/C OUT s-Video Connectors Connect to the Y/C acceptors (1 to 3)
10 CV INPUT BNC Connector Connects to the composite video source
11 CV OUT BNC Connectors Connect to the composite video acceptors (1 to 3)
12 POWER IN with Fuse AC connector and fuse enabling power supply to the unit
13 POWER Switch Illuminated switch for turning the unit on and off
4VM-73 – Overview

VM-73 - Installing in a Rack 5
4 Installing in a Rack
This section provides instructions for rack mounting the unit.

6 VM-73 - Connecting the VM-73
5 Connecting the VM-73
Always switch off the power to each device before connecting it to your
VM-73. After connecting your VM-73, connect its power and then
switch on the power to each device.
To connect the VM-73 as illustrated in the example in Figure 2:
1. Connect the HDMI input source (for example, a DVD player) to the HDMI
INPUT connector.
2. Connect the three HDMI OUT connectors to up to three HDMI acceptors, (for
example, LCD televisions with speakers).
Not all outputs need to be connected.
3. Connect a computer graphics input source (for example, a PC graphics card)
to the PC INPUT 15-pin HD connector.
4. Connect the three PC OUT 15-pin HD connectors to up to three PC
acceptors (for example, VGA displays or projectors).
5. Connect the component input source (for example, a DVD player) to the
COMP. INPUT RCA connectors (Y/Pb/Pr or Y/Cb/Cr).
6. Connect the three COMP. OUT connectors to up to three component
acceptors (for example, component displays or projectors).
7. Connect the Y/C input source (for example, a DVD player) to the Y/C INPUT
s-Video connector.
8. Connect the three Y/C OUT connectors to up to three Y/C acceptors (for
example, displays).
9. Connect the composite video input source (for example, a DVD player) to
the CV INPUT BNC connector.
10. Connect the three CV OUT connectors to up to three CV acceptors, (for
example, video recorders).
i

VM-73 - Connecting the VM-73 7
11. Connect the power cord to the mains electricity (not shown in Figure 2).
12. Turn the POWER on.
Figure 2: Connecting the VM-73 Multiformat 1:3 Distribution Amplifier

8 VM-73 - Connecting the VM-73
5.1 Reading the EDID
The VM-73 PC input directly reads the EDID from the PC OUT 1 output (see
Section 5.1.1), and allows the HDMI input to read the EDID of the HDMI outputs
(see Section 5.1.2).
5.1.1 Reading the EDID from PC OUT 1
The EDID information of the output connected to PC OUT 1 goes directly to the
PC input via pins 12 and 15 of the 15-pin HD connectors.
5.1.2 Reading the EDID from the HDMI Outputs
The EDID is always acquired from the highest priority output (OUT 1 being the
highest and OUT 3 the lowest).
For example, if all three outputs are connected, the EDID will be read from OUT 1. If OUT 2
and OUT 3 are connected, the EDID will be read from OUT 2.
You can acquire the EDID by disconnecting (for 2 seconds) and then reconnecting
the HDMI input.
To read the EDID (from OUT 2, for example), do the following:
1. Connect an acceptor to OUT 2 (OUT 3 can also be connected, but
OUT 1 cannot).
2. Turn ON the POWER.
3. Disconnect the input for 2 seconds and then reconnect it.
The input reads the OUT 2 EDID information.
If you connect OUT 1, the EDID still remains that of OUT 2.
To acquire the default EDID, disconnect all the HDMI outputs, disconnect the
HDMI input for 2 seconds and then reconnect it.

VM-73 - Technical Specifications 9
6 Technical Specifications
Composite Y/C Component XGA HDMI
INPUTS: 1 composite
on a BNC
connector
1 s-Video
on a 4-pin
connector
1 component
(Y, Pb/Cb, Pr/Cr)
on 3 RCA
connectors
1 XGA on a
15-pin HD
connector
1 HDMI on
an HDMI
connector
OUTPUTS: 3 composite
on BNC
connectors
3 s-Video
on 4-pin
connectors
3 component
(Y, Pb/Cb, Pr/Cr)
on 3 RCA
connectors each
3 XGA on
15-pin HD
connectors
3 HDMI on
HDMI
connectors
OUTPUT LEVEL: 1.8Vpp 1.9Vpp 2.0Vpp 2.0Vpp
BANDWIDTH (-3dB): 430MHz 440MHz 430MHz 405MHz 2.25Gbps
DIFF. GAIN: 0.05% 0.06% 0.05% 0.05%
DIFF. PHASE: 0.05Deg 0.02Deg 0.05Deg 0.03Deg
S/N RATIO @5MHz: 62dB 62dB 74dB 69dB
COUPLING: DC Y-DC, C-
AC DC DC
K-FACTOR: <0.05%
CROSSTALK (all
hostile): -60dB
POWER
CONSUMPTION: 100-240V AC, 100mA
OPERATING
TEMPERATURE: 0° to +40°C (32° to 104°F)
STORAGE
TEMPERATURE: -40° to +70°C (-40° to 158°F)
HUMIDITY: 10% to 90%, RHL non-condensing
DIMENSIONS 19 " x 7" x 1U W, D, H
WEIGHT: 2kg (4.4lbs)
ACCESSORIES: Power cord, rack “ears”
Specifications are subject to change without notice at http://www.kramerelectronics.com

10 VM-73 - Technical Specifications

For the latest information on our products and a list of Kramer distributors,
visit our Web site where updates to this user manual may be found.
We welcome your questions, comments, and feedback.
Web site: www.kramerelectronics.com
E-mail: [e-mail]
P/N:
2900-000544
Rev:
3
!
SAFETY WARNING
Disconnect the unit from the power
supply before opening and servicing