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Polycom EF2241 manual

Models: EF2241

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DEFINITION OF TERMS

room gain of this microphone channel is said to be 0 dB. If the reflected signal picked up by the microphone is higher than the level of the signal sent to the line output to your amplifier, that microphone channel has positive room gain. The more positive the room gain, the harder the AEC must work to determine which signal is an echo and which is a local speech signal.

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VORTEX EF2241 Reference Manual

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Polycom EF2241 manual

Contents

Vortex EF2241 Reference Manual Page Introduction INTRODUCTION Welcome How to Use This ManualPRODUCT FEATURES Product RegistrationProduct Inputs and Outputs Remote Control What’s Not Included PRE-INSTALLATIONTools Needed for Installation What’s IncludedEF2241 FRONT AND REAR PANELS 10. INPUT PARALLEL PORT. Parallel logic input Instructions for Securing Power Supply to Back of EF2241 INSTALLATIONCONNECTING THE EF2241 TO OTHER EQUIPMENT Recommendation For Easy AccessTypical EF2241 Connections CONNECTING MULTIPLE VORTEX DEVICES DEVICE IDS ON THE EF BUSNote. The EF Bus must be connected so that the EF Bus In of one Terminating the EF2241 FACTORY DEFAULT SETTINGS PRESETTechnical Support INSTALLATIONPreset VORTEX EF2241 Reference ManualPresets and Multiple Vortex Devices Pick a Standard Signal LevelCHECK SURROUNDING EQUIPMENT Configure Program Audio Sources Configure the matrix mixer input from the codec output. The inputCALIBRATION INPUT SETTINGSSelect Phantom Power for Inputs INTEGRATING THE EF2241 INTO YOUR SYSTEMADJUST THE INPUT GAIN IN THIS WAY Set Levels on Line Input ChannelsIF THE AGC METER SHOWS Customize Setting for Your Particular Application SET UP THE PHONE INTERFACEBUILD YOUR ECHO CANCELLER REFERENCE ECHO CANCELLER REFERENCE FOR MULTIPLE VORTEX DEVICESIf all far end audio and program audio sources are on the same Setting up theBus Reference Vortex deviceAutomixer Parameters CONFIGURE THE AUTOMATIC MICROPHONE MIXERMixer Settings Global SettingsChannel Settings AUTOMIXER SETTINGS FOR MULTIPLE VORTEX DEVICESBUILDING YOUR SYSTEM WITH MULTIPLE VORTEX DEVICES CONFIGURE THE MATRIX MIXERAutomixer and Bus Mixer Settings Operating as an Independent Default Settings1. Assign Inputs 2. Assign Outputs 3. Configure the submatrixTHE EF BUS THE EF BUSTHE EF BUS PRESETSOTHER EF2241 FEATURES 4. Configure Your Echo Canceller ReferenceLCD Menu Tree LCD MENU STRUCTUREmust be flashing. To make the parameter flash assuming the front panel is not locked press ENTER. Once the parameter is flashing, use the UP and DOWN buttons to adjust the parameter value. The parameter is instantly updated while it is being adjusted - you should hear changes as the parameter is changing. RS-232 control strings are also sent via the RS-232 port so your remote control device is instanta- neously updated as well. Press ENTER to select and store the parameter value or press ESC to cancel the selected value and return to the old value. Pressing HOME has the effect of pressing ESC then HOME, so the selected value will be cancelled and the menu will return to the top of the menu tree Figure 17. EF2241 SYSTEM MENUPHONE CONTROL Automatic Gain Control Inputs 1-4, T. This enables automatic gain con INPUTSFigure 19. EF2241 Outputs OUTPUTSAUTOMIXER MENU Global Settings Mixer Settings Channel SettingsDecay Hold Time Camera Gating Threshold Global SettingsGlobal Settings AutomixerLast Mic On Mode Last Mic Number Local Max NOM Global Max NOM Mixer SettingsChannel Settings Mixer Settings AM1/AM2 Bus ID Chairman Mode Chairman MicSubMatrix MATRIX MENUMatrix Main MatrixInput/Output EQ Channel Band PARAMETRIC EQ MENUFigure 25. EF2241 MACROSPRESETS PresetsToo many microphones are gating TROUBLESHOOTINGAUTOMATIC MICROPHONE MIXER No microphones are gating Some microphones are not gatingRoom Audio Sounds Choppy ECHO CANCELLER REFERENCEMATRIX MIXER RESIDUAL ECHOFinding the Source of Echo Room Gain Figure 28. Room Gain Excessive Room GainIn-Conference Quick Check Excessive Microphone Amplification Nonlinearity InsufficientMicrophone AmplificationEmail vortex@polycom.com CONTACTING TECHNICAL SUPPORTPERFORMANCE SPECIFICATIONS TECHNICAL SPECIFICATIONSMECHANICAL SPECIFICATIONS ELECTRICAL SPECIFICATIONSCOMPLIANCE USA and CanadaUS Telco requirements Canadian Telco Requirements Automatic Dialing Telco ConnectorRest of World AustraliaMains powered POT’s Voice Telephony without Emergency 000 dialing Installation InstructionsTechnical Support TECHNICAL SPECIFICATIONSThis page was intentionally left blank VORTEX EF2241 Reference ManualKonformitätserklärung CE Mark R& TTE DirectiveDeclaration of Conformity KonformitetserklæringTechnical Support VORTEX EF2241 Reference ManualCONFERENCE SYSTEM DESIGN Noise and Reverberation Consider Room GainFigure 29. Room Gain V ORTEX EF2241 Reference Manual EF2241 BLOCK DIAGRAMEF2241 BLOCK DIAGRAM EN Echo Canceller, Noise CancellerRJ11 Plug Pinout CONNECTOR PINOUTSEF Bus Cat-5 Plug PinoutInput/Output Remote Control Port Power Supply InputMic/Line Inputs, Line Inputs, Line Outputs 1 2 3 4 5 6 7 CONNECTING UNBALANCED RCA TO BALANCED MINI PHOENIXMAKING AN EF BUS TERMINATOR InstructionsADDITIONAL NOTES WARRANTY INFORMATION What is covered For how long What we will do LimitationsWhat we ask you to do What this warranty does not cover State Law RightsNo User Serviceable Parts Acoustic Gain Ambient Level Automatic Gain Control AGC Echo CancellerDEFINITION OF TERMS Acoustic EchoNOM NOM Attenuation NOM Bus Presets Room Gain EF Bus Equalization Line Echo Macros Matrix Mixer Noise Cancellationroom gain of this microphone channel is said to be 0 dB. If the reflected signal picked up by the microphone is higher than the level of the signal sent to the line output to your amplifier, that microphone channel has positive room gain. The more positive the room gain, the harder the AEC must work to determine which signal is an echo and which is a local speech signal INDEX Mic/Line Inputs, Line Inputs, Line Outputs Page Page Phone 800 932-2774, 404 Polycom, Inc Installed Voice Business Group1725-80098-001-C 1720 Peachtree Street NW, Suite 220 Atlanta, GA