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Polycom EF2241 Connecting Unbalanced Rca To Balanced Mini Phoenix, Making An Ef Bus Terminator

Models: EF2241

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CONNECTING UNBALANCED RCA TO BALANCED MINI PHOENIX

CONNECTOR PINOUTS

CONNECTING UNBALANCED RCA TO BALANCED MINI PHOENIX

RCA Male	Mini (3.5 mm) Phoenix
Tip

Red	Red	+
	Black	-
Black	Shield

1

2

3

Ring

Figure 31. Cable construction for connecting unbalanced RCA to balanced mini Phoenix (3 conductor terminal block).

1.Connect RCA Tip to Phoenix pin 1.

2.Connect RCA Ring to Phoenix pin 2.

3.Connect Phoenix pin 3 to Shield, and leave Shield floating on RCA end.

Caution! Do NOT connect the shield at both ends.

Caution! On the EF2241, Phoenix pin 3 is connected to chassis ground. Under no circumstances should Phoenix pin 3 be connected to pin 1 or to pin 2. Doing so will add noise to the audio signal.

MAKING AN EF BUS TERMINATOR

1 2 3 4 5 6 7 8

110Ω

Figure 32. The terminator

Instructions	To make a terminator (for use when connecting EF2280s), use an RJ45 connector.
	Connect pin 3 to pin 6 with an 110 Ohm resistor. A terminator is not required for the
	EF2241 as it is built in.

© Polycom, Inc.

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VORTEX EF2241 Reference Manual

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Polycom EF2241 Connecting Unbalanced Rca To Balanced Mini Phoenix, Making An Ef Bus Terminator, Instructions, RCA Male

Contents

Vortex EF2241 Reference Manual Page Introduction INTRODUCTION Welcome How to Use This ManualPRODUCT FEATURES Product RegistrationProduct Inputs and Outputs Remote Control Tools Needed for Installation PRE-INSTALLATIONWhat’s Included What’s Not IncludedEF2241 FRONT AND REAR PANELS 10. INPUT PARALLEL PORT. Parallel logic input CONNECTING THE EF2241 TO OTHER EQUIPMENT INSTALLATIONRecommendation For Easy Access 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 Terminating the EF2241 FACTORY DEFAULT SETTINGS PRESETPreset INSTALLATIONVORTEX EF2241 Reference Manual Technical SupportPresets 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 inputSelect Phantom Power for Inputs INPUT SETTINGSINTEGRATING THE EF2241 INTO YOUR SYSTEM CALIBRATIONADJUST THE INPUT GAIN IN THIS WAY Set Levels on Line Input ChannelsIF THE AGC METER SHOWS BUILD YOUR ECHO CANCELLER REFERENCE SET UP THE PHONE INTERFACEECHO CANCELLER REFERENCE FOR MULTIPLE VORTEX DEVICES Customize Setting for Your Particular ApplicationBus Reference Setting up theVortex device If all far end audio and program audio sources are on the sameAutomixer Parameters CONFIGURE THE AUTOMATIC MICROPHONE MIXERMixer Settings Global SettingsChannel Settings AUTOMIXER SETTINGS FOR MULTIPLE VORTEX DEVICESAutomixer and Bus Mixer Settings Operating as an Independent CONFIGURE THE MATRIX MIXERDefault Settings BUILDING YOUR SYSTEM WITH MULTIPLE VORTEX DEVICES1. Assign Inputs 2. Assign Outputs 3. Configure the submatrixTHE EF BUS THE EF BUSOTHER EF2241 FEATURES PRESETS4. Configure Your Echo Canceller Reference THE EF BUSLCD 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 AUTOMIXER MENU OUTPUTSGlobal Settings Mixer Settings Channel Settings OutputsGlobal Settings Global SettingsAutomixer Decay Hold Time Camera Gating ThresholdChannel Settings Mixer SettingsMixer Settings AM1/AM2 Bus ID Chairman Mode Chairman Mic Last Mic On Mode Last Mic Number Local Max NOM Global Max NOMMatrix MATRIX MENUMain Matrix SubMatrixInput/Output EQ Channel Band PARAMETRIC EQ MENUPRESETS MACROSPresets Figure 25. EF2241AUTOMATIC MICROPHONE MIXER TROUBLESHOOTINGNo microphones are gating Some microphones are not gating Too many microphones are gatingMATRIX MIXER ECHO CANCELLER REFERENCERESIDUAL ECHO Room Audio Sounds ChoppyFinding the Source of Echo Room Gain Figure 28. Room Gain Excessive Room GainIn-Conference Quick Check Excessive Microphone Amplification Microphone InsufficientAmplification NonlinearityEmail vortex@polycom.com CONTACTING TECHNICAL SUPPORTMECHANICAL SPECIFICATIONS TECHNICAL SPECIFICATIONSELECTRICAL SPECIFICATIONS PERFORMANCE SPECIFICATIONSCOMPLIANCE USA and CanadaUS Telco requirements Canadian Telco Requirements Automatic Dialing Telco ConnectorMains powered POT’s Voice Telephony without Emergency 000 dialing AustraliaInstallation Instructions Rest of WorldThis page was intentionally left blank TECHNICAL SPECIFICATIONSVORTEX EF2241 Reference Manual Technical SupportDeclaration of Conformity CE Mark R& TTE DirectiveKonformitetserklæring KonformitätserklärungTechnical Support VORTEX EF2241 Reference ManualCONFERENCE SYSTEM DESIGN Noise and Reverberation Consider Room GainFigure 29. Room Gain EF2241 BLOCK DIAGRAM EF2241 BLOCK DIAGRAMEN Echo Canceller, Noise Canceller V ORTEX EF2241 Reference ManualEF Bus CONNECTOR PINOUTSCat-5 Plug Pinout RJ11 Plug PinoutInput/Output Remote Control Port Power Supply InputMic/Line Inputs, Line Inputs, Line Outputs MAKING AN EF BUS TERMINATOR CONNECTING UNBALANCED RCA TO BALANCED MINI PHOENIXInstructions 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 DEFINITION OF TERMS Echo CancellerAcoustic Echo Acoustic Gain Ambient Level Automatic Gain Control AGCNOM 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 1725-80098-001-C Polycom, Inc Installed Voice Business Group1720 Peachtree Street NW, Suite 220 Atlanta, GA Phone 800 932-2774, 404