Kramer TOOLS 900xl Bedienungsanleitung

Kramer Electronics, Ltd.

USER MANUAL

Model:

900xl

Power Amplifier

Contents

Introduction 1

Getting Started 1

2.1

Quick Start 2

Overview 3

Your 900xl Power Amplifier 4

Connecting the 900xl Power Amplifier 6

5.1

Connecting a PC 7

Operating the 900xl Power Amplifier 7

6.1

Using the Front Panel Buttons 7

6.2

Using Serial Commands 8

Technical Specifications 8

Hex Table 9

Kramer Protocol 2000 9

Figures

Figure 1: 900xl Power Amplifier – Top, Front, and Rear Views 4

Figure 2: 900xl Power Amplifier – Underside View 5

Figure 3: Connecting the 900xl Power Amplifier 6

Figure 4: RS-232 Control Cable 7

Tables

Table 1: 900xl Power Amplifier Front, and Rear Functions 4

Table 2: 900xl Power Amplifier Underside Functions 5

Table 3: 900xl Technical Specifications 8

Table 4: 900xl Hex Table 9

Table 5: Protocol Definitions 9

Table 6: Instruction Codes for Protocol 2000 10

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 the video, audio, and presentation

professional on a daily basis. In recent years, we have redesigned and

upgraded most of our line, making the best even better! Our 500-plus

different models now appear in eight groups

that are clearly defined by

function.

Thank you for purchasing the Kramer TOOLS 900xl Power Amplifier,

which is ideal for:

Presentation rooms and multimedia applications for quick, local

audio amplification

Personal audio listening (for example, a PC and portable CD

player)

The package includes the following items:

900xl Power Amplifier

Power supply (12V DC/2A Input)

This user manual

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

1 GROUP 1: Distribution Amplifiers; GROUP 2: Video and Audio Switchers, Matrix Switchers and Controllers; GROUP 3:

Video, Audio, VGA/XGA Processors; GROUP 4: Interfaces and Sync Processors; GROUP 5: Twisted Pair Interfaces;

GROUP 6: Accessories and Rack Adapters; GROUP 7: Scan Converters and Scalers; and GROUP 8: Cables and Connectors

2 Download up-to-date Kramer user manuals from our Web site at http://www.kramerelectronics.com

3 The complete list of Kramer cables is on our Web site at http://www.kramerelectronics.com

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Getting Started

2.1 Quick Start

This quick start chart summarizes the basic setup and operation steps.

Overview

3 Overview

The Kramer 900xl is a high-performance power amplifier for line-level

stereo audio signals. It accepts either a stereo audio signal on an RCA

connector or a stereo audio signal on a 3.5mm mini jack. It delivers a

speaker output of 10 watts RMS per channel into a 4-ohm load on a 10A

4-pin terminal block connector.

The 900xl includes:

Input selector buttons

Audio gain buttons for volume control

Overheating warning protection with LED indicator

A 12V DC power source

The 900xl is housed in a Kramer TOOLS enclosure.

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 900xl away from moisture, excessive

sunlight and dust

Caution – No operator-serviceable parts inside unit.

Warning – Use only the Kramer Electronics input power

wall adapter that is provided with this unit

Warning – Disconnect power and unplug unit from wall

before installing or removing device or servicing unit.

1 Available from Kramer Electronics on our Web site at http://www.kramerelectronics.com

2 For example: model number AD2512C, part number 2535-000251

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Your 900xl Power Amplifier

4 Your 900xl Power Amplifier

Figure 1, Figure 2, Table 1, and Table 2 define the unit.

Figure 1: 900xl Power Amplifier – Top, Front, and Rear Views

Table 1: 900xl Power Amplifier Front, and Rear Functions

# Feature Function

1 12V DC Connector +12V DC for powering the unit

2 RS-232 Tx Rx G Terminal Block

Connector

Connect to PC

3 L+ L– R+ R– OUT Terminal

Block Connector

Speaker output

4 IN 2 RIGHT RCA Connector Connect to stereo audio right input of source 2

5 IN 2 LEFT RCA Connector Connect to stereo audio left input of source 2

6 IN 1 3.5mm Mini-jack Connector Connect to stereo audio input of source 1

7 INPUT 1 Button Selects the input from audio source 1

8 INPUT 2 Button Selects the input from audio source 2

9 VOLUME – Button Decreases output volume

10 VOLUME + Button Increases output volume

11 OVER LED Illuminates red when device is overheating and mutes

output

12 ON LED Illuminates green when receiving power

Your 900xl Power Amplifier

Figure 2: 900xl Power Amplifier – Underside View

Table 2: 900xl Power Amplifier Underside Functions

# Feature Function

1 LEVEL L/H Switch Input level – low / high gain; set to low in case of distortion

2 PROG ON Switch For use when upgrading device firmware

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Connecting the 900xl Power Amplifier

5 Connecting the 900xl Power Amplifier

To connect the 900xl, as illustrated in Figure 3, perform the following:

1. Connect an unbalanced stereo audio source (for example, a computer audio

line out) to the IN 1 mini jack connector.

2. Connect an unbalanced stereo audio source (for example, an unbalanced

stereo audio player) to the LEFT and RIGHT IN 2 RCA connectors.

3. Connect the SPKR OUT terminal block to a pair of loudspeakers:

Connect the “L+” and the “L-” terminal block connectors to the left

loudspeaker, and the “R+” and the “R-” terminal block connectors to the

right loudspeaker. Do not ground the loudspeakers.

4. Connect the 12V DC power adapter to the power socket and connect the

adapter to the mains electricity (not shown in Figure 3).

Figure 3: Connecting the 900xl Power Amplifier

Operating the 900xl Power Amplifier

5.1 Connecting a PC

You can control the 900xl with a PC (or other controllers) via the RS-232

port using serial commands.

To connect a PC to the 900xl:

Connect the RS-232 9-pin D-sub port on your PC to the RS-232

rear panel port on the Master 900xl using a cable as shown in

Figure 4:

Figure 4: RS-232 Control Cable

6 Operating the 900xl Power Amplifier

You can operate your 900xl using:

The front panel buttons

RS-232 serial commands transmitted by a PC, touch screen

system, or other serial controller

6.1 Using the Front Panel Buttons

To operate the 900xl using the front panel buttons:

To choose audio input source 1 (the PC line-out as shown in

Figure 3), press INPUT 1 button.

To choose audio input source 2 (a stereo tape), press INPUT 2

button.

Adjust the output volume to the speakers using the VOLUME + and –

buttons.

Note: In the case of output distortion that cannot be corrected using the

volume controls, try switching the LEVEL switch on the underside of the

unit (see Figure 2) from H to L and alter the output using the volume

control.

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Technical Specifications

6.2 Using Serial Commands

To operate your device using serial commands, you need to install Kramer's

control software

For an explanation of all control commands, see sections 8 and 9.

7 Technical Specifications

900xl technical specifications are shown in Table 3:

Table 3: 900xl Technical Specifications

INPUTS: 1. Stereo audio on a 3.5mm mini-jack connector

2. Stereo audio on RCA connectors

OUTPUTS: 1 stereo differential speaker output

MAX. OUTPUT LEVEL: 18.4Vpp, 10 RMS per channel

BANDWIDTH (-3dB): 25kHz

S/N RATIO: 60dB

CONTROLS

Gain range:

-14.8 to +32dB at high-gain

-21.3 to +20.2dB at low-gain

COUPLING: Input: AC; Output: DC

AUDIO THD + NOISE: 2.2%

AUDIO 2nd HARMONIC: 1.2%

POWER SOURCE: 12V DC x 2.3A DC Fuse:4A/16V

DIMENSIONS 12cm x 7.5cm x 2.5cm (4.7" x 3.0" x 1.0") W, D, H

WEIGHT: 0.2kg (0.4lbs)

ACCESSORIES: Power supply

1 Download control software from our Web site at http://www.kramerelectronics.com

2 Specifications are subject to change without notice

3 External controls: IN1, IN2, VOLUME-, VOLUME+ by front panel pushbuttons. RS-232 connection by 3-pin terminal

block

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