Bedienungsanleitung Polycom Vortex EF2280 (Seite 4 von 62) (Englisch)

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INTRODUCTION

VORTEX EF2280 Reference Manual 2 Technical Support: 800.932.2774

NTRODUCTION

Welcome Congratulations on your purchase of the Vortex EF2280!

How to Use This

Manual

This is a reference manual for your EF2280. It is structured to provide the informa-

tion you need quickly and conveniently. The following is an overview of each sec-

tion:

• Introduction

• Conference System Design gives suggestions on topics to consider when design-

ing your system.

• Pre-Installation includes information about the contents of the box, tools needed

for installation and front and rear panel descriptions.

• Installation covers connections of inputs/outputs and calibration of inputs of the

EF2280.

• Integrating the EF2280 Into Your System describes adjustments to take into con-

sideration when integrating the EF2280 with surrounding equipment in your sys-

tem.

•LCD Menu Structure describes an overview of the LCD menu structure and also

gives a system overview of features and options available.

• Troubleshooting helps to debug problems with installation.

• Technical Specifications provides the technical specifications of the EF2280.

• EF2280 Block Diagram shows the inside of the EF2280.

• Connector Pinouts shows pinout diagrams for EF2280 input and output connec-

tors.

• Warranty Information

• Definition of Terms explains terms used in this manual, as well as terms used in

our technology of echo cancellation, noise cancellation, and audio conferencing.

About the EF2280 The EF2280 is a 12-input, 12-output, 8-channel acoustic echo and noise canceller

with matrix mixing and automatic microphone mixing capabilities. It includes a total

of 12 analog inputs (8 mic/line level inputs and 4 line level inputs), 12 analog outputs,

and 4 digital expansion busses. Acoustic echo cancellation (AEC) and noise cancel-

lation can be applied to each of the 8 mic/line level inputs, and each of these inputs

can then be sent to one of the two internal automatic microphone mixers. The system

also contains a 25 x 18 main matrix, and four 7 x 3 submatrices. The 25 x 18 main

matrix has the following inputs: input channels 1-8 (gated or ungated), input channels

A-D, the internal signal generator, and 3 mixes of each of the four digital busses (3

mixes times 4 busses equals 12 inputs). The 25 x 18 main matrix has the following

outputs: outputs 1-8 and A-D, AEC reference 1 and 2, and W, X, Y, and Z outputs to

the digital expansion bus. The EF2280 has 24 bit resolution, 32-bit floating point

computation, and a 48 kHz sampling rate.

Polycom’s proprietary noise cancellation on each of the 8 mic/line inputs helps to

keep overall ambient noise to a minimum. Polycom echo cancellers are the only ones

on the market to feature this patent pending technology. Noise cancellation filters out

ambient background noise such as noise from heating, ventilating and air condition-

ing (HVAC), LCD projectors, and road noise. Our noise cancellation technology is

not a noise gate. It actually removes noise. Therefore, it enhances the operation and

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