Kramer VM-5ARII User manual

KRAMER ELECTRONICS LTD.
USER MANUAL
MODEL:
VM-5ARII
V
ideo Audio Distribution
A
mplifier
VM-20ARII
1:20 Programmable Video
A
udio Distributor
P/N: 2900-300148 Rev 1

VM-5ARII, VM-20ARII - Contents i
Contents
1Introduction 1
2Getting Started 2
2.1Achieving the Best Performance 2
3Overview 3
3.1The VM-5ARII Video Audio Distribution Amplifier 3
3.2The VM-20ARII 1:20 Programmable Video Audio Distributor 3
4Defining the VM-5ARII and VM-20ARII 5
5Installing in a Rack 10
6Connecting the Distribution Amplifiers 11
6.1Connecting the VM-5ARII Video Audio Distribution Amplifier 11
6.2Connecting the VM-20ARII Video Audio Distributor 12
7Technical Specifications 15
Figures
Figure 1: VM-5ARII Video Audio Distribution Amplifier – Front and Rear Panels 6
Figure 2: VM-20ARII 1:20 Programmable Video Audio Distributor – Front Panel 7
Figure 3: VM-20ARII 1:20 Programmable Video Audio Distributor – Rear Panel 8
Figure 4: VM-20ARII Underside Switches 9
Figure 5: Connecting the VM-5ARII 12
Figure 6: Connecting the VM-20ARII 14

VM-5ARII, VM-20ARII - 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 the video, audio, presentation, and broadcasting
professional 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 Matrix
Switchers; 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-5ARII and/or VM-20ARII
distributors, which are ideal for the following typical applications:
•Any professional AV system requiring a compact, high-quality DA
•Retail stores and other point-of-sale display systems
•Security and CCTV applications
•Studio RGB/YUV distribution

2 VM-5ARII, VM-20ARII - 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)
•Avoid interference from neighboring electrical appliances that may adversely
influence signal quality
•Position your Kramer product away from moisture, excessive sunlight and
dust
i

VM-5ARII, VM-20ARII - Overview 3
3 Overview
This section gives an overview of the:
•VM-5ARII Video Audio Distribution Amplifier, see Section 3.1
•VM-20ARII 1:20 Programmable Video Audio Distributor, see Section 3.2
3.1 The VM-5ARII Video Audio Distribution Amplifier
The Kramer VM-5ARII is a high-performance distribution amplifier for composite
video and unbalanced stereo audio signals. It takes one input, provides correct
buffering and isolation and distributes the signal to five identical outputs.
More specifically, the VM-5ARII features:
•High bandwidth 360MHz (-3dB)
•1 composite video input and 5 outputs on BNC connectors
•1 unbalanced stereo input and 5 outputs on RCA connectors
•Looping input
•Selectable input signal termination
•Video level and equalization, and audio level controls
•Video AC/DC coupling detection
•Standard 19” 1U rack mount size
3.2 The VM-20ARII 1:20 Programmable Video Audio
Distributor
The VM-20ARII is a multi-format, high-performance distribution amplifier that can
be configured for composite video and unbalanced stereo audio signals. It can be
configured as a 1:10 distribution amplifier for s-Video (Y/C) signals or a 1:5
distribution amplifier for RGBS signals, both with unbalanced stereo audio.

4 VM-5ARII, VM-20ARII - Overview
More specifically, the VM-20ARII features:
•High bandwidth of 430MHz (-3dB)
•1 video input and 20 outputs on BNC connectors
•1 unbalanced stereo input and 20 outputs on RCA connectors
•Looped input capability
•Grouped audio level control
•Selectable input signal termination
•Audio level and video level and equalization controls
•Video AC/DC coupling selection
•Standard 19” 2U rack mount size

VM-5ARII, VM-20ARII - Defining the VM-5ARII and VM-20ARII 5
4 Defining the VM-5ARII and VM-20ARII
This section defines your:
•VM-5ARII Video Audio Distribution Amplifier, see Figure 1
•VM-20ARII 1:20 Programmable Video Audio Distributor, see Figure 2, Figure
3and Figure 4

6 VM-5ARII, VM-20ARII - Defining the VM-5ARII and VM-20ARII
Figure 1: VM-5ARII Video Audio Distribution Amplifier – Front and Rear Panels
Feature Function
1 Illuminated Power Switch Illuminated switch for turning the unit ON or OFF
2 VIDEO IN BNC Connector Connects to the video source
3 75Ω/Hi-Z Pushbutton Press in for input 75Ωtermination, release for no termination
4 DC/AC Pushbutton Press in for DC coupling, release for AC coupling
5 VIDEO LOOP BNC Connector Connects to a display
6 VIDEO GAIN Control Adjusts the video gain level
7 VIDEO EQ. Control Adjusts the cable compensation equalization level
8 VIDEO OUT BNC Connectors Connects to the video acceptor (from 1 to 5)
9 AUDIO IN RCA Connectors (L and R) Connects to the L and R channels of the audio source
10 AUDIO LOOP RCA Connectors (L and R) Connects to an audio acceptor
11 AUDIO GAIN R Controls the volume on the right audio channel
12 AUDIO GAIN L Controls the volume on the left audio channel
13 AUDIO OUT RCA RCA Connectors (L and R) Connects to the audio acceptors (from 1 to 5)
14 Power Connector with Fuse AC connector for supplying power to the unit
6VM-5ARII, VM-20ARII – Defining the VM-5ARII and VM-20ARII

VM-5ARII, VM-20ARII - Defining the VM-5ARII and VM-20ARII 7
VM-5ARII, VM-20ARII – Defining the VM-5ARII and VM-20ARII 7
Figure 2: VM-20ARII 1:20 Programmable Video Audio Distributor – Front Panel
# Feature Function
1 Illuminated Power Switch Illuminated switch for turning the unit ON or OFF
2 STEREO/BAL pushbuttons Select stereo or balanced mode of operation (pushed=balanced)
3 OUT 1-20 (L, R) audio GAIN trimmers Controls audio level of outputs 1 to 20
4 OUT 1-20 EQ. and GAIN trimmers Control video level and cable equalization of outputs 1 to 20
5 1:20, 2x1:10, 4x1:5, 1:10+2x1:5 AUDIO
Operating Mode Switches
Programming switches for audio mode of operation as follows:
1:20 – Splits input “1” to all 20 outputs
2x1:10 – Splits input "1" to outputs "1-10" and input "3" to outputs "11-20"
4x1:5 – Splits four inputs to four consecutive sets of five outputs each
1:10+2x1:5 – Splits input "1" to outputs "1-10", input "3" to outputs "11-15" and input "4" to outputs "16-20"
6 1:20, 2x1:10, 4x1:5, 1:10+2x1:5 VIDEO
Operating Mode Switches
Programming switches for video mode of operation as follows:
1:20 – Splits input “1” to all 20 outputs
2x1:10 – Splits input "1" to outputs "1-10" and input "3" to outputs "11-20"
4x1:5 – Splits four inputs to four consecutive sets of five outputs each
1:10+2x1:5 – Splits input "1" to outputs "1-10", input "3" to outputs "11-15" and input "4" to outputs "16-20"