Kramer VM-80VN User manual

KRAMER ELECTRONICS LTD.
USER MANUAL
MODEL:
VM-80VN
1:8 Video Distributor
P/N: 2900-300446 Rev 2

VM-80VN – Contents
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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-80VN 1:8 Video Distributor 4
4Connecting the VM-80VN 6
5Technical Specifications 8
Figures
Figure 1: VM-80VN 1:8 Video Distributor 4
Figure 2: Connecting the VM-80VN 1:8 Video Distributor 7

VM-80VN - 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 14 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; GROUP 11:
Sierra Video Products; GROUP 12: Digital Signage; GROUP 13: Audio; and
GROUP 14: Collaboration.
Congratulations on purchasing your Kramer VM-80VN 1:8 Video Distributor, which
is ideal for the following typical applications:
Any professional AV system requiring high-quality signal distribution
Video production studios for source mastering
Specialized high resolution video and SDI distribution
Distribution of component video, RGBS, and other multi-channel formats
using multiple VM-80Vs operating in parallel

2
VM-80VN - 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-80VN 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.
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VM-80VN - 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/.
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4
VM-80VN - Overview
3 Overview
The VM-80VN is a high−performance distribution amplifier for composite or SDI
signals. It can be configured as a 1:4 DA for s−Video (Y/C) signals and a 1:8 DA
for CV or SDI signals. It has controls to compensate for signal losses inherent in
long cable runs.
More specifically the VM-80VN features:
High bandwidth - 330MHz (−3dB)
Level (gain) and EQ (peaking) controls
Dual-mode that configure as either a 1:8 (composite) or 1:4 (s−Video) DA
Internally selectable video AC/DC Coupling
Companion unit to the VM-80A Audio DA
Desktop size where 2 units can be rack mounted side−by−side in a 1U rack
space with the optional RK−1 adapter
3.1 Defining the VM-80VN 1:8 Video Distributor
This section defines the VM-80VN.
Figure 1: VM-80VN 1:8 Video Distributor

VM-80VN - Overview
5
#
Feature
Function
1
POWER LED
Illuminates when the device is powered on
2
CH2 ADJ HF Trimmer
Adjusts the CH2 cable compensation equalization level
3
CH2 ADJ Level Trimmer
Adjusts the CH2 video gain level
4
CH1 ADJ HF Trimmer
Adjusts the CH1 cable compensation equalization level
5
CH1 ADJ Level Trimmer
Adjusts the CH1 video gain level
6
CH 1 IN BNC Connector
Connects to the CH1 video source
7
CH 1 IN 75ΩPushbutton
Press in for CH1 75Ω termination, release for no termination
8
1:8 Pushbutton
Press in for 1:8 operation, release for 1:4 operation
9
CH 2 IN BNC Connector
Connects to the CH2 video source
10
CH 2 IN 75 ΩPushbutton
Press in for CH2 75Ω termination, release for no termination
11
CH 1 OUT BNC Connector
Connects to the CH1 video acceptor(s) (from 1 to 4)
12
CH 2 OUT BNC Connector
Connects to the CH2 video acceptor(s) (from 1 to 4)
13
12V DC Connector
Connector for attaching the 12V DC power supply

6
VM-80VN - Connecting the VM-80VN
4 Connecting the VM-80VN
Always switch off the power to each device before connecting it to your
VM-80VN. After connecting your VM-80VN, connect its power and
then switch on the power to each device.
To connect the VM-80VN as illustrated in the example in Figure 2:
1. Connect up to two video sources (for example composite video players) to
the CH1 IN and CH2 IN BNC connectors of the VM-80VN.
2. Connect up to 8 acceptors to the CH 1 OUT (up to 4) and CH 2 OUT (up to
4) BNC connectors.
3. If a 1:8 operation is needed, press the rear button marked 1:8.
If not, release the button for 2x1:4 operation.
4. If looping is needed, release the 75Ω rear termination switch.
If looping is not needed, press the switch in to the 75Ω position.
5. If 1:8 operation is selected, one of the termination switches should always be
in the released state and the other according to looping requirements.
6. If necessary, adjust the trimmers on the front panel of the machine to
achieve best results.
Level: To compensate for the loss of brightness due to the attenuation of voltage levels
in long cable runs. Adjust while looking at the display device to achieve natural
brightness.
EQ: To compensate for the loss of sharpness due to the attenuation of high frequencies
in long cable runs. Adjust while looking at the display device for natural detail.
7. Connect a mains power source to the socket on the rear panel of the
VM-80VN.
8. Operate source, acceptors and the VM-80VN machine.
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VM-80VN - Connecting the VM-80VN
7
Figure 2: Connecting the VM-80VN 1:8 Video Distributor

8
VM-80VN - Technical Specifications
5 Technical Specifications
INPUTS:
2 composite/SDI video, 1Vpp/75Ω on BNC connectors
with termination switches
OUTPUTS:
2x4 composite/SDI video, 1Vpp/75Ω on BNC connectors
MAX. OUTPUT:
2Vpp
VIDEO BANDWIDTH (-3dB):
330MHz
DIFF. GAIN:
0.12%
DIFF. PHASE:
0.5Deg
K-FACTOR:
<0.05%
S/N RATIO:
74dB
CONTROL:
75Ω termination switch, 1:8 or 2x1:4 selector switch
NON-LINEARITY:
0.1%
COUPLING:
DC or AC (internal selection)
POWER CONSUMPTION:
12V DC, 50mA
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:
22cm x 18cm x 4.5cm (8.7” x 7” x 1.8”) W, D, H (half 19”)
WEIGHT:
1.3kg (2.9lbs) approx.
INCLUDED ACCESSORIES:
Power supply
OPTIONS:
RK−1 19" rack adapter
Specifications are subject to change without notice at http://www.kramerelectronics.com

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]
SAFETY WARNING
Disconnect the unit from the power
supply before opening and servicing
P/N:
2900-300446
Rev:
2
!