Polycom EF2241 manual Introduction, Welcome How to Use This Manual

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INTRODUCTION

INTRODUCTION

Welcome

How to Use This Manual

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-Installationincludes 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.

About the EF2241 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

VORTEX EF2241 Reference Manual

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Contents Vortex EF2241 Reference Manual Page Introduction Welcome How to Use This Manual IntroductionProduct Registration Product FeaturesProduct Inputs Outputs Remote Control PRE-INSTALLATION Tools Needed for InstallationWhat’s Included What’s Not IncludedEF2241 Front and Rear Panels PRE-INSTALLATION Installation Connecting the EF2241 to Other EquipmentMounting the EF2241 North American RequirementTypical EF2241 Connections CodecConnecting Multiple Vortex Devices Device IDS on the EF BUSFactory Default Settings Preset Terminating the EF2241Off Pick a Standard Signal Level Presets Multiple Vortex DevicesCheck Surrounding Equipment Configure Program Audio Sources Integrating the EF2241 Into Your System Input SettingsCalibration Set Levels on Line Input Channels SET UP the Phone Interface Build Your Echo Canceller ReferenceEcho Canceller Reference for Multiple Vortex Devices Customize Setting for Your Particular ApplicationSetting up Bus ReferenceConfigure the Automatic Microphone Mixer Automixer ParametersGlobal Settings Automixer Settings for Multiple Vortex Devices Channel SettingsDefault Settings Configure the Matrix MixerBuilding Your System with Multiple Vortex Devices Configure the submatrix Assign Inputs Assign OutputsEF BUS Other EF2241 Features PresetsConfigure Your Echo Canceller Reference LCD Menu Structure LCD Menu TreeLCD Menu Structure System Menu SystemPhone Control Phone ControlInputs Inputs 1-4, T, A-DOutputs Automixer MenuGlobal Settings Mixer Settings Matrix Menu MatrixParametric EQ Menu Input/Output EQ Channel BandPresets MacrosTroubleshooting Automatic Microphone MixerNo microphones are gating Some microphones are not gating Too many microphones are gatingEcho Canceller Reference Matrix MixerResidual Echo Room Audio Sounds ChoppyFinding the Source of Echo Room Gain Excessive Room Gain Room GainIn-Conference Quick Check Excessive Microphone Amplification Insufficient NonlinearityContacting Technical Support Email vortex@polycom.comTechnical Specifications USA and Canada ComplianceUS Telco requirements Automatic Dialing Telco Connector Canadian Telco RequirementsAustralia Rest of WorldThis page was intentionally left blank CE Mark R& TTE Directive Vortex EF2241 Reference Manual Technical Support Conference System Design Noise and Reverberation Consider Room GainEF2241 Block Diagram EN Echo Canceller, Noise CancellerConnector Pinouts EF BusInput/Output Remote Control Port Making AN EF BUS Terminator Connecting Unbalanced RCA to Balanced Mini PhoenixInstructions Additional Notes Warranty Information RMA# Must be on packageWhat this warranty does not cover State Law RightsEcho Canceller Definition of TermsAcoustic Echo Crosspoint Mix Minus BusNOM Attenuation NOM Bus Presets Room Gain NOMDefinition of Terms Index NOM Index Page 1725-80098-001-C
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