Kramer VS-44AV User manual

Kramer Electronics, Ltd.
Preliminary
USER MANUAL
Models:
VS-44AV, 4x4 Video Audio Matrix Switcher
VS-81AV, 8x1 Video/Audio-Stereo Switcher
VS-81AYC, 8x1 s-Video/Audio-Stereo Switcher
VS-81V, 8x1 Video Switcher
VS-81X, 8x1 Balanced Audio Switcher

Contents
i
Contents
1Introduction 1
2Getting Started 1
3Kramer Mechanical Switchers 2
3.1 Your VS-44AV 4x4 Video Audio Matrix Switcher 2
3.2 Your VS-81AV 8x1 Video/Audio-Stereo Switcher 3
3.3 Your VS-81AYC 8x1 s-Video/Audio-Stereo Switcher 4
3.4 Your VS-81V 8x1 Video Switcher 5
3.5 Your VS-81X 8x1 Balanced Audio Switcher 7
4Connecting Kramer Mechanical Switchers 8
4.1 Connecting a VS-81V 8x1 Video Switcher 8
4.2 Connecting a VS-81X Balanced Audio Switcher 9
4.3 Connecting a VS-81AV 8x1 Video/Audio-Stereo Switcher 10
Figures
Figure 1: VS-44AV 4x4 Video Audio Matrix Switcher 2
Figure 2: VS-81AV 8x1 Video/Audio-Stereo Switcher 3
Figure 3: VS-81AYC 8x1 s-Video/Audio-Stereo Switcher 5
Figure 4: VS-81V 8x1 Video Switcher 6
Figure 5: VS-81X 8x1 Balanced Audio Switcher 7
Figure 6: Connecting a VS-81V 8x1 Video Switcher 8
Figure 7: Connecting a VS-81X Balanced Audio Switcher 9
Figure 8: Connecting a VS-81AV 8x1 Video/Audio-Stereo Switcher 10
Tables
Table 1: VS-44AV Functions 2
Table 2: VS-44AV Technical Specifications 3
Table 3: VS-81AV Functions 4
Table 4: VS-81AV Technical Specifications 4
Table 5: VS-81AYC Functions 5
Table 6: VS-81AYC Technical Specifications 5
Table 7: VS-81V Functions 6
Table 8: VS-81V Technical Specifications 6
Table 9: VS-81X Functions 7
Table 10: VS-81X Technical Specifications 7

Introduction
1
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 groups1
Thank you for purchasing your Kramer mechanical switcher, which is ideal
for a system in which a passive, hard-wired signal path is preferred.
that are clearly
defined by function.
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 cables2
Each package includes the following items:
•The one or more Kramer mechanical switchers
•This user manual3
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 and position your Kramer
switcher away from moisture, excessive sunlight and dust
1 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; GROUP 11: Sierra Products
2 The complete list of Kramer cables is on our Web site at http://www.kramerelectronics.com
3 Download up-to-date Kramer user manuals from our Web site at http://www.kramerelectronics.com

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Kramer Mechanical Switchers
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3 Kramer Mechanical Switchers
This user manual describes the following Kramer mechanical switchers:
•VS-44AV, 4x4 Video Audio Matrix (see section 3.1)
•VS-81AV, 8x1 Video/Audio-Stereo Switcher (see section 3.2)
•VS-81AYC, 8x1 s-Video/Audio-Stereo Switcher (see section 3.3)
•VS-81V, 8x1 Video Switcher (see section 3.4)
•VS-81X, 8x1 Balanced Audio Switcher (see section 3.5)
3.1 Your VS-44AV 4x4 Video Audio Matrix Switcher
The Kramer VS-44AV 4x4 Video Audio Matrix Switcher is a high-quality
mechanical 4x4 matrix switcher for composite video and stereo audio
signals. The VS-44AV is designed to simultaneously route up to 4 sources
each to any one of 4 available outputs. The VS-44AV is unique in allowing
4 different cross points of video and stereo audio to operate at the same
time. However, it cannot simultaneously distribute an input signal to
multiple outputs. The high-quality input selector buttons are color coded for
easy identification and unselected inputs are terminated via 75Ωresistors.
Figure 1and Table 1define the VS-44AV 4x4 Video Audio Matrix
Switcher. Table 2gives the technical specifications for the VS-44AV.
Figure 1: VS-44AV 4x4 Video Audio Matrix Switcher
Table 1: VS-44AV Functions
#
Feature
Function
1 OUTPUT/INPUT Selector Buttons Select the video and audio source (from A to D) to route to
each video/audio acceptor (from 1 to 4)
2 VIDEO OUTPUT BNC connectors Connect to the video acceptors (from 1 to 4)
3 AUDIO OUTPUT RCA connectors Connect to the right and left audio acceptors (from 1 to 4)
4 VIDEO INPUT BNC connectors Connect to the video sources (from A to D)
5 AUDIO INPUT RCA connectors Connect to the right and left audio sources (from A to D)

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Table 2: VS-44AV Technical Specifications
INPUTS: 4 video, 1Vpp/75Ωon BNC connectors
4 audio stereo, 1Vpp nominal on RCA connectors
OUTPUTS: 4 video, 1Vpp/75Ωon BNC connectors
4 audio stereo, 1Vpp nominal on RCA connectors
SWITCHING SYSTEM: Mechanical, break-before-make
CROSSPOINTS: 16 for video, 16x2 for audio, 4 active at any given time
CROSSTALK: -42dB @5MHz
BANDWIDTH (-3dB): 220MHz (video), 100kHz (audio)
SIGNAL LEVELS: Up to 3Vpp video, 36Vpp audio
DIMENSIONS: 19" x 7" x 1U W, D, H rack mountable
WEIGHT: 1.6kg (3.5lbs) approx.
3.2 Your VS-81AV 8x1 Video/Audio-Stereo Switcher
The Kramer VS-81AV, 8x1 Video/Audio-Stereo Switcher is a high-quality
mechanical 8x1 switcher for composite video and stereo audio signals.
The VS-81AV is designed for applications requiring an unpowered rack-
mountable unit for routing of video and stereo audio signals. Audio is
always switched together with the corresponding video signal and
unselected video inputs are terminated via 75Ωresistors. High-quality
switching components provide excellent isolation between inputs. Its
unpowered passive design is advantageous for applications in which various
regulatory compliances would otherwise be required. The "hard-wired"
signal path offers excellent bandwidth, and can even switch other signal
formats.
Figure 2and Table 3define the VS-81AV 8x1 Video/Audio-Stereo
Switcher. Table 4gives the technical specifications for the VS-81AV.
Figure 2: VS-81AV 8x1 Video/Audio-Stereo Switcher

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Kramer Mechanical Switchers
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Table 3: VS-81AV Functions
#
Feature
Function
1 INPUT Selector Buttons Select the video/audio source (from 1 to 8) to route to the output
2 VIDEO OUT BNC connector Connects to the video acceptor
3 AUDIO OUT RCA connectors Connect to the left and right audio acceptor
4 VIDEO input BNC connectors Connect to the video sources (from 1 to 8)
5 AUDIO input RCA connectors Connect to the left and right audio sources (from 1 to 8)
Table 4: VS-81AV Technical Specifications
INPUTS: 8 video, 1Vpp/75Ωnom. on BNC connectors
8 audio stereo, 1Vpp nom. on RCA connectors
OUTPUT: 1 video, 1Vpp/75Ωnom. on a BNC connector
1 audio stereo, 1Vpp nom. on an RCA connector
SWITCHING SYSTEM: Mechanical, break-before-make
CROSSPOINTS: 1 of 8
SIGNAL LEVELS: Up to 3Vpp video, 36Vpp audio
BANDWIDTH (-3dB): Video: 400MHz; Audio: 100kHz
DIMENSIONS: 19" x 7" x 1U W, D, H rack mountable
WEIGHT: 1.5kg (3.3lbs) approx.
3.3 Your VS-81AYC 8x1 s-Video/Audio-Stereo Switcher
The Kramer VS-81AYC, 8x1 s-Video/Audio-Stereo Switcher is a high
quality mechanical 8x1 switcher for s-Video (Y/C) and stereo audio
signals using 4-pin and RCA connectors. The VS-81AYC is designed for
applications requiring an unpowered rack mountable unit for the routing
of s-Video (Y/C) and stereo audio signals. Audio is always switched
together with the corresponding s-Video (Y/C) signal and unselected
video inputs are terminated via 75Ωresistors. High quality switching
components provide excellent isolation between inputs. Its unpowered
passive design is advantageous for applications in which various
regulatory compliances would otherwise be required. The "hard-wired"
signal path offers excellent bandwidth, and can switch other signal
formats.
Figure 3and Table 5define the VS-81AYC, 8x1 s-Video/Audio-Stereo
Switcher. Table 6gives the technical specifications for the VS-81AYC.

Kramer Mechanical Switchers
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Figure 3: VS-81AYC 8x1 s-Video/Audio-Stereo Switcher
Table 5: VS-81AYC Functions
#
Feature
Function
1 INPUT Selector Buttons Select the s-Video/audio source (from 1 to 8) to route to the output
2 s-VIDEO OUT 4-pin connector Connects to the s-VIDEO acceptor
3 AUDIO OUT RCA connectors Connect to the left and right audio acceptor
4 s-VIDEO input 4-pin connector Connect to the s-VIDEO sources (from 1 to 8)
5 AUDIO input RCA connectors Connect to the left and right audio sources (from 1 to 8)
Table 6: VS-81AYC Technical Specifications
INPUTS: 8 s-Video, 1Vpp/75Ω(Y), 0.3 Vpp/75Ω(C) nom. on 4-pin
connectors
8 audio stereo, Vpp nom. on RCA connectors
OUTPUTS: 1 s-Video, 1Vpp/75Ω(Y), 0.3 Vpp/75Ω(C) nom on a 4-pin
connector
1 audio stereo, Vpp nom on RCA connectors
SWITCHING SYSTEM: Mechanical, break-before-make
CROSSPOINTS: 1 of 8
SIGNAL LEVELS: Up to 3Vpp video, 36Vpp audio
BANDWIDTH (-3dB): Video: 350MHz (Y); Audio: 100kHz
DIMENSIONS: 19" x 7" x 1U W, D, H rack mountable
WEIGHT: 1.4kg (3.1lbs) approx.
3.4 Your VS-81V 8x1 Video Switcher
The Kramer VS-81V, 8x1 Video Switcher is a high quality mechanical 8x1
switcher for composite video using BNC connectors. The VS-81V is
designed for applications requiring a compact desktop unit for routing
composite video signals. High quality switching components and carefully
designed circuits provide excellent isolation between inputs and unselected
inputs are terminated via 75Ωresistors. Its unpowered design is
advantageous for applications in which various regulatory compliances
would otherwise be required. The passive "hard-wired" signal path offers
very high bandwidth and can also switch other signal formats.

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Kramer Mechanical Switchers
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Figure 4and Table 7define the VS-81V, 8x1 Video Switcher. Table 8gives
the technical specifications for the VS-81V.
Figure 4: VS-81V 8x1 Video Switcher
Table 7: VS-81V Functions
#
Feature
Function
1 INPUT Selector Buttons Select the video source (from 1 to 8) to route to the output
2 VIDEO OUTPUT BNC connector Connect to the video acceptor
3 VIDEO input BNC connectors Connect to the video sources (from 1 to 8)
Table 8: VS-81V Technical Specifications
INPUTS: 8 video, 1Vpp/75Ωnom. on BNC connectors
OUTPUTS: 1 video, 1 Vpp/75Ωnom. on a BNC connector
SWITCHING SYSTEM: Mechanical, break-before-make
CROSSPOINTS: 1 of 8
VIDEO CROSSTALK: -47dB @5MHz
BANDWIDTH (-3dB): 400 MHz
DIMENSIONS: 18.8cm x 10.2cm x 4.4cm (7.4" x 4" x 1.7") W, D, H.
WEIGHT: 0.72kg (1.6lbs) approx.
OPTIONS: RK-81 19" rack adapter

Kramer Mechanical Switchers
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3.5 Your VS-81X 8x1 Balanced Audio Switcher
The Kramer VS-81X, 8x1 Balanced Audio Switcher is a high quality
mechanical 8x1 switcher for mono balanced audio using XLR connectors.
The VS-81X is designed for applications requiring a compact desktop unit
for routing audio signals. High quality switching components provide
excellent isolation between inputs. Its unpowered passive design is
advantageous for applications in which various regulatory compliances
would otherwise be required. The "hard-wired" signal path can also switch
other signal formats.
Figure 5and Table 9define the VS-81X, 8x1 Balanced Audio Switcher.
Table 10 gives the technical specifications for the VS-81X.
Figure 5: VS-81X 8x1 Balanced Audio Switcher
Table 9: VS-81X Functions
# Feature Function
1 INPUT Selector Buttons Select the audio source (from 1 to 8) to route to the output
2 AUDIO OUTPUT XLR connector Connect to the audio acceptor
3 AUDIO input XLR connectors Connect to the audio sources (from 1 to 8)
Table 10: VS-81X Technical Specifications
INPUTS: 8 balanced audio, line or mic level, on XLR connectors
OUTPUT: 1 balanced audio, line or mic level, on an XLR connector
SWITCHING SYSTEM: Mechanical, break-before-make
CROSSPOINTS: 1 of 8
SIGNAL LEVELS: Up to 36Vpp
BANDWIDTH (-3dB): 25kHz
DIMENSIONS: 25.5cm x 10.2cm x 4.5cm (10" x 4" x 1.7") W, D, H.
WEIGHT: 0.82kg (1.8lbs) approx.
OPTIONS: RK-81X 19" rack adapter

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Connecting Kramer Mechanical Switchers
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4 Connecting Kramer Mechanical Switchers
This section gives examples of how to connect Kramer mechanical
switchers.
•To connect a mechanical video switcher, see the example in section 4.1
•To connect a mechanical audio switcher, see the example in section 4.2
•To connect a mechanical audio/video switcher, see the example in
section 4.3
4.1 Connecting a VS-81V 8x1 Video Switcher
To connect your VS-81V 8x1 Video Switcher, as the example in Figure 6
illustrates:
1. Connect up to 8 composite video sources to the appropriate BNC input
connectors.
2. Connect the BNC OUTPUT connector to the composite video acceptor.
Pushing a front panel INPUT selector button routes that composite video
source to the composite video acceptor.
Figure 6: Connecting a VS-81V 8x1 Video Switcher