How To Use This Manual; Introduction - Polycom Vortex EF2241 Reference Manual

I
NTRODUCTION
Welcome
How to Use This
Manual
About the EF2241
V EF2241 Reference Manual
ORTEX
Congratulations on your purchase of the Vortex EF2241!
This is a reference manual for your EF2241. It is structured to provide the informa-
tion you need quickly and conveniently. The following is an overview of each sec-
tion:
•

Introduction

• 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
EF2241.
• Integrating the EF2241 Into Your System describes adjustments to take into con-
sideration when integrating the EF2241 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 EF2241.
• Conference System Design gives suggestions on topics to consider when design-
ing your system.
• EF2241 Block Diagram shows the inside of the EF2241.
• Connector Pinouts shows pinout diagrams for EF2241 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.
The Vortex EF2241 is a companion to the Vortex EF2280, or a stand-alone solution
for audio conferencing. It automatically mixes four microphones and other audio
while cancelling acoustic echoes and annoying background noise, and features a
built-in "phone add" to bring telephone calls into the conference. A total of 8 Vortex
devices can be linked together (for instance, 8 EF2280s, or 2 EF2241s and 6
EF2280s).
The EF2241 has 4 mic/line inputs, 4 line inputs and 8 line outputs with 4 channels of
acoustic echo and noise cancellation. It has matrix mixing and automatic microphone
mixing capabilities, a single telephone line interface, and a single channel power amp.
It includes a total of 8 analog inputs (4 mic/line level inputs and 4 line level inputs), 8
analog outputs, and 5 digital expansion busses (one being dedicated to phone).
Acoustic echo cancellation (AEC) and noise cancellation can be applied to each of the
4 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 23 x 17 main matrix, four 7 x 3 submatrices, and one 7 x 2
submatrix for transporting audio from the phone line. The 23 x 17 main matrix has
the following inputs: Input channels 1-4 (gated or ungated), Input channels A-D, the
internal signal generator, 3 mixes of each of the four digital busses (3 mixes times 4
2 Technical Support: 800.932.2774
I
NTRODUCTION