Kramer VM-50AN User manual

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Kramer VM-50AN 1x5 (U or B) (B) & 1 x 5 (U) Audio Distribution Amplifier

KRAMER ELECTRONICS LTD.

USER MANUAL

MODEL:

VM-50AN

1:5 Audio Distributor

P/N: 2900-000050 Rev 4

VM-50AN – Contents

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-50AN 1:5 Audio Distributor 4

4Using Your VM-50AN 1:5 Audio Distributor 6

4.1 Connecting the VM-50AN as a Balanced Stereo 1:5 Audio Distributor 6

4.2 Connecting the VM-50AN as an Unbalanced Stereo 1:5 Audio Distributor 7

4.3 Connecting the VM-50AN as a 1:10 Audio Distributor 8

5Technical Specifications 10

Figures

Figure 1: VM-50AN 1:5 Audio Distributor 4

Figure 2: Connecting the VM-50AN as a Balanced Stereo 1:5 Audio Distributor 7

Figure 3: Connecting the VM-50AN as an Unbalanced Stereo 1:5 Audio Distributor 8

Figure 4: Connecting the VM-50AN as a 1:10 Audio Distributor 9

VM-50AN - Introduction

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 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 VM-50AN 1:5 Audio Distributor, which

is ideal for the following typical applications:

Video/audio duplication studios and retail outlets

Any audio system requiring multiple outputs from a single source

VM-50AN - 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-50AN 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.

VM-50AN - Getting Started

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/.

VM-50AN - Overview

3 Overview

The VM-50AN is a high-performance distribution amplifier for balanced and

unbalanced stereo audio signals. It takes one balanced or unbalanced stereo input

and distributes the signal simultaneously to ten stereo outputs (five balanced and

five unbalanced).

In addition, the VM-50AN features:

A balanced/unbalanced input selection button

Left and right level (gain) controls

Operation as a stand-alone distributor, or as a companion to other Kramer

“50” series products like the VM-50V video DA, or the VM-50YC s-Video DA

The VM-50AN is housed in a desktop sized enclosure. Two units can be rack

mounted side-by-side with the optional RK-1 adapter in a 1U rack space.

3.1 Defining the VM-50AN 1:5 Audio Distributor

This section defines the VM-50AN.

Figure 1: VM-50AN 1:5 Audio Distributor

VM-50AN - Overview

Feature

Function

POWER Switch

Illuminated switch supplying power to the unit

INPUT MODE BAL/UNBAL Button

When released, selects the balanced stereo audio

input when pushed in, selects the unbalanced

stereo audio

RIGHT LEVEL Trimmer

Adjusts the right output signal level (use a small

screwdriver)

LEFT LEVEL Trimmer

Adjusts the left output signal level (use a small

screwdriver)

INPUT 3.5mm Mini Plug Connector

Connects to the unbalanced audio source

INPUT Terminal Block Connector

Connects to the balanced audio source

OUT 3.5mm Mini Plug Connector

Connects to the unbalanced audio acceptor (from 1

to 5)

OUT Terminal Block Connector

Connects to the balanced audio acceptor (from 1 to

12 VDC 200mA

+12V DC connector for powering the unit

VM-50AN - Using Your VM-50AN 1:5 Audio Distributor

4 Using Your VM-50AN 1:5 Audio Distributor

Always switch off the power to each device before connecting it to your

VM-50AN. After connecting your VM-50AN, connect its power and

then switch on the power to each device.

This section describes how to connect the VM-50AN as:

A balanced stereo 1:5 audio distributor, see Section 4.1

An unbalanced stereo 1:5 audio distributor, see Section 4.2

A 1:10 audio distributor, see Section 4.3

4.1 Connecting the VM-50AN as a Balanced Stereo 1:5

Audio Distributor

To connect and operate the VM-50AN as a balanced stereo 1:5 audio distributor,

as the example in Figure 2 illustrates, do the following:

1. Connect a balanced stereo audio source (for example, a balanced stereo

player) to the INPUT terminal block connector.

2. Connect up to five balanced stereo audio acceptors (for example, balanced

stereo recorders) to the OUT terminal block connectors.

You do not have to connect all the outputs.

3. Connect the 12V DC power adapter to the power socket, connect the

adapter to the mains electricity, and then turn on the power switch.

4. Release the BAL/UNBAL INPUT MODE button to select balanced stereo

audio operation.

5. Adjust the right and/or left output signal level, if required.

Insert a screwdriver into the hole and carefully rotate it, to trim the level.

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