Kramer VA-8XL Bedienungsanleitung

KRAMER ELECTRONICS LTD.

USER MANUAL

MODEL:

VA-8xl

8-Channel Balanced Stereo

Audio Amplifier

P/N: 2900-300151 Rev 1

VA-8xl – Contents i

Contents

1Introduction 1

2Getting Started 2

2.1 Achieving the Best Performance 2

3Overview 3

3.1 Defining the VA-8xl 8-Channel Balanced Stereo Audio Amplifier 3

4Connecting the VA-8xl 6

5Operating the VA-8xl 8

5.1 Adjusting the Gain/Attenuation of the Channels 8

5.2 Storing and Recalling Setups 9

6Controlling the VA-8xl 11

6.1 Controlling a Single VA-8xl Unit 11

6.2 Preparing the RS-232 Port on a Single Unit 11

6.3 Configuring up to a 120 Channel Balanced Stereo Audio Amplifier 13

7Upgrading the Flash Memory 18

7.1 Downloading from the Internet 18

7.2 Connecting the PC to the RS-232 Port 18

7.3 Upgrading Firmware 19

8Technical Specifications 24

9Default Communication Parameters 25

10 Kramer Protocol 2000 26

10.1 Hex Codes for Attenuation Gain Control 27

10.2 Hex Codes for Amplification Gain Control 28

10.3 Channel Number Codes 28

Figures

Figure 1: VA-8xl 8-Channel Balanced Stereo Audio Amplifier Front Panel 4

Figure 2: VA-8xl 8-Channel Balanced Stereo Audio Amplifier Rear Panel 5

Figure 3: Balanced Stereo Audio Connection 6

Figure 4: Unbalanced Stereo Audio Input Connection 6

Figure 5: Unbalanced Stereo Audio Output Connection 6

Figure 6: Connecting the VA-8xl 8-Channel Balanced Stereo Audio Amplifier 7

Figure 7: Crossed Cable RS-232 Connection 11

Figure 8: Straight Cable RS-232 Connection with a Null Modem Adapter 12

Figure 9: Rear Panel DIP-switches (Factory Default) 12

Figure 10: Configuring up to 15 VA-8xl Units 14

Figure 11: Preparing the RS-232 Connectors 15

Figure 12: An RS-485 Control Interface Setup 17

Figure 13: Splash Screen 19

Figure 14: Atmel – Flip Window 20

Figure 15: Open Configuration File Select Window 20

Figure 16: Atmel – Flip Window (RS-232 Communication) 21

Figure 17: RS-232 Window 21

Figure 18: Atmel – Flip Window (Connected) 22

Figure 19: Atmel – Flip Window (Operation Completed) 23

VA-8xl - 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 VA-8xl 8-Channel Balanced Stereo

Audio Amplifier, which is ideal for the following typical applications:

•Large presentation audio level control

•Audio broadcast and editing studios

•PA remote audio level control

2 VA-8xl - 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 VA-8xl away from moisture, excessive sunlight and

dust

VA-8xl - Overview 3

3 Overview

The VA-8xl 8-Channel Balanced Stereo Audio Amplifier is a high−performance

8-channel, balanced stereo input volume controller for balanced audio signals on

terminal block connectors. The volume of each L and R stereo channel can be

adjusted independently of the other stereo channel.

In particular, the VA-8xl features:

•A digitally controlled volume control function, with gain from -95dB

(attenuation) up to +31dB (amplification) - in increments of 0.5dB

•Clean, noise-free transition during gain setting changes

•Transparent performance even in the most critical broadcast

applications

•8 independent channels

•Control of the amplifier gain of the left and right channels—

together or separately—via the front panel buttons, or remotely via

RS-232 or RS-485

•Daisy-chaining of up to 15 machines in a single system using

RS-485 or RS-232, allowing control of up to 120 stereo audio

channels!

•Storing and recalling up to 15 configuration setups via the non-

volatile memory, using the front panel buttons, or remotely via

RS-232 or RS-485

•A LED display on the front panel, showing the gain of the selected

channel (that is, its left and right decibel status)

•Easy-to-connect detachable terminal block connectors

•A rugged, professional 1U rack mountable enclosure and ship with

Windows®-based software

3.1 Defining the VA-8xl 8-Channel Balanced Stereo Audio

Amplifier

This section defines the VA-8xl.

4 VA-8xl - Overview

Figure 1: VA-8xl 8-Channel Balanced Stereo Audio Amplifier Front Panel

# Feature Function

1 POWER Switch Illuminated switch supplying power to the unit

2 CHANNEL SELECTOR Buttons (a). Select/deselect the stereo channel (from 1 to 8)

(b). Select a setup number (from 1 to 15)

LEVEL Control

Buttons

DOWN (a). Decreases the volume in increments of 0.5dB from -95dB to +31dB gain

(b). Stores the current setting in the non-volatile memory

4 LEFT Selects/deselects the left channel

5 UP (a). Increases the volume in increments of 0.5dB from -95dB to +31dB gain

(b). Recalls a setup from the non-volatile memory

6 RIGHT Selects/deselects the right channel

7 LEFT/dB LED Display Shows the gain of the selected left channel

8 RIGHT/dB LED Display Shows the gain of the selected right channel

4VA-8xl – Overview

VA-8xl - Overview 5

VA-8xl – Overview 5

Figure 2: VA-8xl 8-Channel Balanced Stereo Audio Amplifier Rear Panel

# Feature Function

9 IN Terminal Block Connectors Connect to audio sources (from 1 to 8)

10 OUT Terminal Block Connectors Connect to audio acceptors (from 1 to 8)

11 RS-485 Detachable Terminal Block Port Pin # 1 is for Ground; Pin # 2 is for +; Pin # 3 is for –

12 RS-232 9-pin D-sub Port Connects to the PC or the Remote Controller

13 SETUP DIP-switches DIP-switches for setup of the unit

14 Power Connector with FUSE AC connector enabling power supply to the unit

6 VA-8xl - Connecting the VA-8xl

4 Connecting the VA-8xl

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

VA-8xl. After connecting your VA-8xl, connect its power and then

switch on the power to each device.

To connect the VA-8xl as illustrated in the example in Figure 6:

1. Using the appropriate wiring shown in the figures below, connect up to 8

balanced stereo audio sources (for example, a tape deck) to INPUT

CHANNEL 1 – 8 via terminal block connectors:

You do not have to connect all channels.

2. Using the appropriate wiring shown in the figures below, connect up to 8

balanced stereo audio acceptors (for example, a stereo amplifier) to

OUTPUT CHANNEL 1 – 8 via terminal block connectors:

You do not have to connect all channels.

3. If required, connect a PC via RS-232, (see Page 8).

Figure 3: Balanced Stereo

Audio Connection

Figure 4: Unbalanced

Stereo Audio Input

Connection

Figure 5: Unbalanced

Stereo Audio Output

Connection

VA-8xl - Connecting the VA-8xl 7

Figure 6: Connecting the VA-8xl 8-Channel Balanced Stereo Audio Amplifier

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