Kramer VS-24x1 User manual
KRAMER ELECTRONICS LTD.
USER MANUAL
MODEL:
VS-24xl
V
ideo-Audio Standby Switcher
P/N: 2900-002068 Rev 4
VS-24xl – Contents i
Contents
1Introduction 1
2Getting Started 2
2.1Achieving the Best Performance 2
3Overview 3
3.1Defining the VS-24xl Video-Audio Standby Switcher 3
4Connecting the VS-24xl 5
5Operating the VS-24xl 7
5.1Setting the Automatic Mode 7
5.2Setting the Manual Mode 7
5.3Connecting the Remote Connector 8
6Technical Specifications 9
Figures
Figure 1: VS-24xl Video-Audio Standby Switcher 3
Figure 2: Connecting the VS-24xl Video-Audio Standby Switcher 6
Figure 3: Remote Terminal Block Connector 8
VS-24xl - 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 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 VS-24xl Video-Audio Standby
Switcher, which is ideal for the following typical applications:
•Presentation systems requiring automatic selection via active wall plate
inputs
•Security applications for automatic switching of control cameras
•Broadcast applications to eliminate dead air time
•Retail stores and other point-of-sale systems requiring uninterrupted
demonstrations and advertising
2 VS-24xl - 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
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 VS-24xl away from moisture, excessive sunlight and
dust
Caution: 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
i
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VS-24xl - Overview 3
3 Overview
The VS-24xl is a 2x1 standby switcher for composite video and balanced stereo
audio signals. The VS-24xl is designed to automatically switch to the second input
whenever the primary video signal is interrupted. If the primary signal reappears,
the VS-24xl automatically switches back to input one.
In addition, the VS-24xl features:
•Operation as a simple 2x1 video and audio switcher using two front panel
buttons or as a remote controlled video and audio 2x1 switcher
•A front panel button that allows the user to select between automatic and
manual switching
•Video LEVEL and cable EQ. control via trimmers accessible from the front
panel
•Contact closure control
3.1 Defining the VS-24xl Video-Audio Standby Switcher
This section defines the VS-24xl.
Figure 1: VS-24xl Video-Audio Standby Switcher
4 VS-24xl - Overview
# Feature Function
1 POWER Switch Illuminated switch for turning the unit ON or OFF
2 SELECTOR IN 1 Button In manual mode, press to switch input 1 to the output
3 SELECTOR IN 2 Button In manual mode, press to switch input 2 to the output
4 MODE IN=AUTO Button Push in to select automatic switching, release to select
manual switching
5 EQ Trimmer Adjust the cable compensation equalization level
Insert a screwdriver into the hole and carefully rotate it, to
trim the level
6 LEVEL Trimmer Adjust the output video signal level
Insert a screwdriver into the hole and carefully rotate it, to
trim the level
7 VIDEO IN 1 (Master) BNC
Connector
Connect to the primary video source 1
8 VIDEO IN 2 BNC Connector Connect to the standby video source 2
9 VIDEO OUT BNC Connector Connect to the video acceptor
10 AUDIO IN 1 (Master)
Terminal Block Connector
Connect to the primary balanced audio input 1
11 AUDIO IN 2 Terminal Block
Connector
Connect to the standby balanced audio input 2
12 AUDIO OUT Terminal Block
Connector
Connect to the balanced audio output
13 REMOTE Terminal Block
Connector
Connect to contact closure switches
14 12V DC +12V DC connector for powering the unit
VS-24xl - Connecting the VS-24xl 5
4 Connecting the VS-24xl
Always switch off the power to each device before connecting it to your
VS-24xl. After connecting your VS-24xl, connect its power and then
switch on the power to each device.
To connect the VS-24xl as illustrated in the example in Figure 2:
1. Connect the composite video sources to the VIDEO IN 1 (master) and IN 2
BNC connectors.
2. Connect the CV audio sources (for example, from a DVD or VCR player) to
AUDIO IN 1 (master) and AUDIO IN 2 terminal blocks.
3. Connect the VIDEO OUT BNC connector to the CV input of the display.
4. Connect the AUDIO OUT terminal block connector to the balanced audio
input of the speakers.
5. If needed, connect the REMOTE terminal block connector to a remote
contact closure switch.
The power connection is not shown in Figure 2.
i
i
6 VS-24xl - Connecting the VS-24xl
Figure 2: Connecting the VS-24xl Video-Audio Standby Switcher
VS-24xl - Operating the VS-24xl 7
5 Operating the VS-24xl
This section describes how to:
•Set the automatic mode (Section 5.1)
•Set the manual mode (Section 5.2)
•Connect the remote connector (Section 5.3)
5.1 Setting the Automatic Mode
When the VS-24xl is set to the automatic mode, the signal from input 1 takes
priority over the signal from input 2. If the signal from input 1 is interrupted, the
signal from input 2 automatically routes to the output. In the automatic mode,
pushing the SELECTOR buttons IN 1 and IN 2 has no effect.
To set the Automatic Mode:
•Push in the MODE IN=AUTO button
5.2 Setting the Manual Mode
In manual mode, you choose which input to route to the output.
To set the Manual Mode:
1. Release the MODE IN=AUTO button.
2. Press one of the SELECTOR buttons:
SELECTOR IN 1 (to route the signal from input 1 to the output); or
SELECTOR IN 2 (to route the signal from input 2 to the output)
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