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Polycom manual EF2241 BLOCK DIAGRAM, V ORTEX EF2241 Reference Manual, Technical Support

Models: EF2241

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VORTEX EF2241 Reference Manual

VORTEX EF2241 Reference Manual

Figure 30. Inside the EF2241

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Technical Support: 800.932.2774

Copyright (c) 2001, Polycom Inc. All Rights Reserved
Output 1	Output 2	Output 3	Output 4	Output A	Output B	Output C	Output D
Line	Line	Line	Line	Line	Line	Line	Line
+ -	+ -	+ -	+ -	+ -	+ -	+ -	+ -
D/A	D/A	D/A	D/A	D/A	D/A	D/A	D/A	D/A
Delay	Delay	Delay	Delay	Delay	Delay	Delay	Delay	Delay
PEQ	PEQ	PEQ	PEQ	PEQ	PEQ	PEQ	PEQ	PEQ

Matrixing

EN	EN	EN	EN	PEQ	PEQ	PEQ	PEQ
A/D	A/D	A/D	A/D	A/D	A/D	A/D	A/D
Level	Level	Level	Level	Level	Level	Level	Level
adjust	adjust	adjust	adjust	adjust	adjust	adjust	adjust
Phantom	Phantom	Phantom	Phantom
Mic/Line + -	Mic/Line + -	Mic/Line + -	Mic/Line + -	+ -	+ -	+ -	+ -
Mic/Line 1 Mic/Line 2 Mic/Line 3 Mic/Line 4				Input A	Input B	Input C	Input D

EN (Echo Canceller, Noise Canceller)

										Ungated
	Echo	Noise		AGC		PEQ	Mute		Gate	Gated
	Canceller	Canceller		AGC		PEQ	Mute		Gate	Gated
	Canceller	Canceller
	R1, R2, Bus	On	Off	On	Off	Parameters	On	Off	Parameters
	R1, R2, Bus					Parameters			Parameters

Amplifier

Output

+ -

AMP

PEQ Tone

Gen.

D/A

LEC

A/D

TLP

TLP (Telephone Line Processing)

	PEQ	AGC	Noise	Call Prog	Mute
			Canceller	Detect

	Parameters	On Off	Parameters	Parameters	On Off

Phone

Telephone

Line

RS-232

EF Bus

Control/Status

EF2241 BLOCK DIAGRAM

EF2241 BLOCK DIAGRAM

Image 54

Polycom EF2241 BLOCK DIAGRAM, V ORTEX EF2241 Reference Manual, Technical Support, EN Echo Canceller, Noise Canceller

Contents

Vortex EF2241 Reference Manual Page Introduction Welcome How to Use This Manual INTRODUCTIONPRODUCT FEATURES Product RegistrationProduct Inputs and Outputs Remote Control What’s Included PRE-INSTALLATIONTools Needed for Installation What’s Not IncludedEF2241 FRONT AND REAR PANELS 10. INPUT PARALLEL PORT. Parallel logic input Recommendation For Easy Access INSTALLATIONCONNECTING THE EF2241 TO OTHER EQUIPMENT Instructions for Securing Power Supply to Back of EF2241Typical 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 FACTORY DEFAULT SETTINGS PRESET Terminating the EF2241VORTEX EF2241 Reference Manual INSTALLATIONPreset Technical SupportPresets and Multiple Vortex Devices Pick a Standard Signal LevelCHECK SURROUNDING EQUIPMENT Configure the matrix mixer input from the codec output. The input Configure Program Audio SourcesINTEGRATING THE EF2241 INTO YOUR SYSTEM INPUT SETTINGSSelect Phantom Power for Inputs CALIBRATIONADJUST THE INPUT GAIN IN THIS WAY Set Levels on Line Input ChannelsIF THE AGC METER SHOWS ECHO CANCELLER REFERENCE FOR MULTIPLE VORTEX DEVICES SET UP THE PHONE INTERFACEBUILD YOUR ECHO CANCELLER REFERENCE Customize Setting for Your Particular ApplicationVortex device Setting up theBus Reference If all far end audio and program audio sources are on the sameCONFIGURE THE AUTOMATIC MICROPHONE MIXER Automixer ParametersGlobal Settings Mixer SettingsAUTOMIXER SETTINGS FOR MULTIPLE VORTEX DEVICES Channel SettingsDefault Settings CONFIGURE THE MATRIX MIXERAutomixer and Bus Mixer Settings Operating as an Independent BUILDING YOUR SYSTEM WITH MULTIPLE VORTEX DEVICES3. Configure the submatrix 1. Assign Inputs 2. Assign OutputsTHE EF BUS THE EF BUS4. Configure Your Echo Canceller Reference PRESETSOTHER EF2241 FEATURES THE EF BUSLCD MENU STRUCTURE LCD Menu Treemust 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 SYSTEM MENU Figure 17. EF2241PHONE CONTROL Automatic Gain Control Inputs 1-4, T. This enables automatic gain con INPUTSFigure 19. EF2241 Global Settings Mixer Settings Channel Settings OUTPUTSAUTOMIXER MENU OutputsAutomixer Global SettingsGlobal Settings Decay Hold Time Camera Gating ThresholdMixer Settings AM1/AM2 Bus ID Chairman Mode Chairman Mic Mixer SettingsChannel Settings Last Mic On Mode Last Mic Number Local Max NOM Global Max NOMMain Matrix MATRIX MENUMatrix SubMatrixPARAMETRIC EQ MENU Input/Output EQ Channel BandPresets MACROSPRESETS Figure 25. EF2241No microphones are gating Some microphones are not gating TROUBLESHOOTINGAUTOMATIC MICROPHONE MIXER Too many microphones are gatingRESIDUAL ECHO ECHO CANCELLER REFERENCEMATRIX MIXER Room Audio Sounds ChoppyFinding the Source of Echo Room Gain Excessive Room Gain Figure 28. Room GainIn-Conference Quick Check Excessive Microphone Amplification Amplification InsufficientMicrophone NonlinearityCONTACTING TECHNICAL SUPPORT Email vortex@polycom.comELECTRICAL SPECIFICATIONS TECHNICAL SPECIFICATIONSMECHANICAL SPECIFICATIONS PERFORMANCE SPECIFICATIONSCOMPLIANCE USA and CanadaUS Telco requirements Automatic Dialing Telco Connector Canadian Telco RequirementsInstallation Instructions AustraliaMains powered POT’s Voice Telephony without Emergency 000 dialing Rest of WorldVORTEX EF2241 Reference Manual TECHNICAL SPECIFICATIONSThis page was intentionally left blank Technical SupportKonformitetserklæring CE Mark R& TTE DirectiveDeclaration of Conformity KonformitätserklärungVORTEX EF2241 Reference Manual Technical SupportCONFERENCE SYSTEM DESIGN Noise and Reverberation Consider Room GainFigure 29. Room Gain EN Echo Canceller, Noise Canceller EF2241 BLOCK DIAGRAMEF2241 BLOCK DIAGRAM V ORTEX EF2241 Reference ManualCat-5 Plug Pinout CONNECTOR PINOUTSEF Bus RJ11 Plug PinoutInput/Output Remote Control Port Power Supply InputMic/Line Inputs, Line Inputs, Line Outputs Instructions CONNECTING UNBALANCED RCA TO BALANCED MINI PHOENIXMAKING AN EF BUS TERMINATOR 1 2 3 4 5 6 7ADDITIONAL 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 Echo Echo CancellerDEFINITION OF TERMS Acoustic Gain Ambient Level Automatic Gain Control AGCEF Bus Equalization Line Echo Macros Matrix Mixer Noise Cancellation NOM NOM Attenuation NOM Bus Presets Room Gainroom 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 1720 Peachtree Street NW, Suite 220 Atlanta, GA Polycom, Inc Installed Voice Business Group1725-80098-001-C Phone 800 932-2774, 404