Kramer VS-24x1 Manuale utente

KRAMER ELECTRONICS LTD.

USER MANUAL

MODEL:

VS-24xl

ideo-Audio Standby Switcher

P/N: 2900-002068 Rev 4

VS-24xl – Contents i

Contents

1Introduction 1

2Getting Started 2

2.1Achieving the Best Performance 2

3Overview 3

3.1Defining the VS-24xl Video-Audio Standby Switcher 3

4Connecting the VS-24xl 5

5Operating the VS-24xl 7

5.1Setting the Automatic Mode 7

5.2Setting the Manual Mode 7

5.3Connecting the Remote Connector 8

6Technical 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

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.

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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