KRAMER ELECTRONIC S LTD.
USER MANUAL
MODEL:
VM-1 0x l
Video Audio Distribution
Amplifier
P/N: 2900-001042 Rev 4
VM-10xl – Contents
i
Contents
1 Introduction 1
2 Getting Started 2
2.1 Achieving the Best Performance 2
2.2 Safety Instructions 3
2.3 Recycling Kramer Products 3
3 Overview 4
3.1 Defining the VM-10xl Video Audio Distribution Amplifier 4
4 Installing in a Rack 7
5 Connecting the VM-10xl 8
5.1 Increasing the Outputs 9
6 Technical Specifications 12
Figures
Figure 1: VM-10xl Video Audio Distribution Amplifier Front Panel 5
Figure 2: VM-10xl Video Audio Distribution Amplifier Rear Panel 6
Figure 3: Connecting the VM-10xl Video Audio Distribution Amplifier 9
Figure 4: Increasing the Outputs: Arranging a 1:30 Video Audio DA 11
VM-10xl - 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-10xl Video Audio Distribution
Amplifier, which is ideal for the following typical applications:
Audio video duplication studios
Rental/staging, CCTV, and home theater use
2
VM-10xl - Getting Started
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).
This equipment is to be used only inside a building. It may only be
connected to other equipment that is installed inside a building.
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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
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-10xl away from moisture, excessive sunlight and
dust
VM-10xl - Getting Started
3
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
!
2.2 Safety Instructions
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-10xl - Overview
3 Overview
The VM-10xl is a high-quality 1:10 video audio distribution amplifier using BNC
connectors for composite video, and RCA connectors for unbalanced stereo audio
signals. The VM-10xl accepts a composite video input and distributes the signal to
10 identical outputs.
In particular, the VM-10xl:
Includes looping connectors for connecting to a local monitor, other
acceptor, or for forming larger systems
For example, you can connect 3 VM 10xl units to make a 1:30 video audio distribution
amplifier. See Section 5.1 for details.
Has a video bandwidth of 360MHz, ensuring transparent performance with
typical video and audio sources
Can function as unbalanced stereo audio or balanced mono audio (selected
via an audio control button)
Recommended for low signal transmission over long distances or in audio broadcasting
studios for high quality signal recreation.
Can output video signals that are DC or AC coupled for maximum flexibility
(selected via a coupling button)
Has front panel video trimmer controls for output level and cable equalization
(EQ.), as well as audio trimmer controls for left and right gain, with an enable
/ disable control button
The video outputs are arranged in two blocks of 5 outputs (outputs 1 to 5, and outputs 6
to 10). Each block can be separately trimmed for output level and cable equalization
(EQ.) thus achieving different compensations for different cable lengths.
3.1 Defining the VM-10xl Video Audio Distribution Amplifier
This section defines the VM-10xl.
VM-10xl - Overview
5
VM-10xl – Overview
5
#
Feature
Function
1
POWER Switch
Illuminated switch supplying power to the unit
2
AUDIO CONTROL
LEFT GAIN Trimmer
Adjusts the audio signal level for the left channel
Insert a screwdriver into the hole and carefully rotate it, to trim the level
3
BAL/ST Button
Pushing in selects balanced mono audio operation, releasing selects unbalanced stereo audio
operation
4
RIGHT GAIN Trimmer
Adjusts the audio signal level for the right channel
5
Enable/Disable Button
Pushing in enables audio gain trimmer control, releasing bypasses it disabling audio gain trimmer
control
6
VIDEO
CONTROL
EQ. Trimmer
Adjusts the video EQ. (equalization) compensation of outputs 6 to 10
7
LEVEL Trimmer
Adjusts the video signal level of outputs 6 to 10
8
EQ. Trimmer
Adjusts the video EQ. (equalization) compensation of outputs 1 to 5
9
LEVEL Trimmer
Adjusts the video signal level of outputs 1 to 5
Figure 1: VM-10xl Video Audio Distribution Amplifier Front Panel
6
VM-10xl - Overview
#
Feature
Function
10
VIDEO IN BNC Connector
Connects to the video source
11
LOOP BNC Connector
For looping to increase output availability
12
TERM Button
Pushing in selects 75, releasing selects Hi-Z
For looping select Hi-Z
13
COUPLING Button
Pushing in selects DC coupling, releasing selects AC coupling (removing the DC offset of
the input signal)
Achieving the best linearity and signal fidelity
14
VIDEO OUT BNC Connectors
Connect to the video acceptors (from 1 to 10)
15
AUDIO IN RCA Connectors
Connects to the stereo audio source (R and L)
16
AUDIO LOOP RCA Connectors
For looping to increase audio output availability (R and L)
17
AUDIO OUTPUTS RCA Connectors
Connect to the stereo audio acceptors R and L, from 1 to 10)
18
Power Connector with Fuse
AC connector enabling power supply to the unit
6
VM-10xl – Overview
Figure 2: VM-10xl Video Audio Distribution Amplifier Rear Panel
VM-10xl - Installing in a Rack
7
4 Installing in a Rack
This section provides instructions for rack mounting the unit.
8
VM-10xl - Connecting the VM-10xl
Always switch off the power to each device before connecting it to your
VM-10xl. After connecting your VM-10xl, connect its power and then
switch on the power to each device.
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5 Connecting the VM-10xl
To connect the VM-10xl as illustrated in the example in Figure 3:
1. Connect a video audio source (for example, a composite video player) to the
VIDEO IN BNC connector and to the left and right AUDIO IN RCA connectors.
2. Connect the 10 VIDEO OUT BNC connectors and the 10 left and right
AUDIO OUTPUT RCA connectors to the video audio acceptors 1 to 10 (for
example, video recorders).
Not all outputs need to be connected.
3. Connect the power cord to the mains electricity.
4. Push in the Term button to terminate the line to 75.
5. Release the BAL/ST button to select unbalanced stereo audio operation.
6. If required, adjust the video trimmer controls for output signal level and/or
cable compensation equalization level.
Insert a screwdriver into the hole and carefully rotate it, to trim the level.
The video outputs are arranged in two blocks of 5 outputs (outputs 1 to 5, and outputs 6
to 10). Each block can be separately trimmed for output level and cable equalization
(EQ.) thus achieving different compensations for different cable lengths.
7. If audio control adjustment is required for left and/or right gain, push in
Enable/Disable button, and then adjust the trimmer controls.
VM-10xl - Connecting the VM-10xl
9
Figure 3: Connecting the VM-10xl Video Audio Distribution Amplifier
5.1 Increasing the Outputs
You can increase the number of outputs by interconnecting VM-10xl units. The
example in Figure 4 illustrates how to connect 3 units to increase the number of
outputs from 10 to 30.
To form a 1:30 video and unbalanced stereo audio DA, do the following:
1. Connect a video audio source (for example, a composite VCR) to the VIDEO
IN BNC connector and to the left and right AUDIO IN RCA connectors of the first
VM-10xl unit.
10
VM-10xl - Connecting the VM-10xl
2. Connect the video LOOP BNC connector of the:
First VM-10xl unit to the VIDEO IN BNC connector of the second
VM-10xl unit
Second VM-10xl unit to the VIDEO IN BNC connector of the third
VM-10xl unit
3. Connect the left and right AUDIO LOOP RCA connectors of the:
First VM-10xl unit to the left and right AUDIO IN RCA connectors of the
second VM-10xl unit
Second VM-10xl unit to the left and right AUDIO IN RCA connectors of
the third VM-10xl unit
4. Connect the 10 VIDEO OUT BNC connectors and the 10 left and right AUDIO
OUTPUT RCA connectors of the:
First VM-10xl unit to the video audio acceptors 1 to 10 (for example,
VCR units)
Second VM-10xl unit to the video audio acceptors 11 to 20
Third VM-10xl unit to the video audio acceptors 21 to 30
5. On the first and second VM-10xl units, release the Term button. On the third
VM-10xl unit, push in the Term button to terminate the line to 75.
6. On each VM-10xl unit:
Connect the power cord to the mains electricity
Release the BAL/ST buttons to select unbalanced stereo audio
operation
Adjust the video trimmer controls for output signal level and/or cable
compensation equalization level, if required
If audio control adjustment is required for left and/or right gain, push in
the Enable/Disable buttons, and then adjust the trimmer controls
The video outputs are arranged in two blocks of 5 outputs (outputs 1 to 5, and
outputs 6 to 10). Each block can be separately trimmed for output level and cable
equalization (EQ.) thus achieving different compensations for different cable
lengths
VM-10xl - Connecting the VM-10xl
11
Figure 4: Increasing the Outputs: Arranging a 1:30 Video Audio DA
12
VM-10xl - Technical Specifications
INPUTS:
1 composite video with loop, 1Vpp/75 with termination
switch on BNC connectors
2 balanced stereo audio or mono with loops, on RCA
connectors
OUTPUTS:
10 composite video, 1Vpp/75 on BNC connectors
10 balanced stereo audio or mono, on RCA connectors
MAX. OUTPUT LEVEL:
Video: 1.6Vpp, Audio: 26.5Vpp
BANDWIDTH (-3dB):
Video: 360MHz, Audio: >100kHz
DIFF. GAIN:
0.07%
DIFF. PHASE:
0.05 Deg.
K-FACTOR:
<0.05%
S/N RATIO:
Video: 77dB, Audio: 87dB
CONTROLS:
Front panel accessible trimmers for video level (-1.2dB to
+6dB) and EQ. (0dB to +8.1dB), audio left and right
control trimmers (0dB to +6dB), balanced/stereo selector
switch and audio controls enable switch
COUPLING:
Video: DC/AC, Audio: AC
AUDIO THD + NOISE:
0.023%
AUDIO 2nd HARMONIC:
0.001%
POWER CONSUMPTION:
230V AC 50 / 60Hz (115V U.S.A.), 4.7VA
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:
2.1kg (4.7lbs) approx.
ACCESSORIES:
Power cord
Specifications are subject to change without notice at http://www.kramerelectronics.com
6 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: info@kramerel.com
P/N:
2900- 001042
Rev:
4
!
SAFETY WARNIN G
Disconnect the unit from the power
supply before opening and servicing
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