Polycom EF2241 manual Inputs 1-4, T, A-D

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LCD MENU STRUCTURE

INPUTS

Inputs 1-4, T, A-D

Acoustic Echo

Cancellation (In 1-4)

Automatic Gain Control

(AGC), In 1-4, T

AGC Maximum

(In 1-4, T)

AGC Minimum

(In 1-4, T)

Gain

Level Mic/Line (In 1-4)

Mute

Noise Cancellation

(In 1-4, T)

Noise Cancellation Level (In 1-4, T)

Phantom Power

(In 1-4)

Reference Assign

(In 1-4)

AEC Suppression

(In 1-4)

Line Echo Cancellation

(In T)

Dynamics Processing

(In T)

LEC Suppression (In T)

Figure 19. EF2241

Inputs submenu

The input menu allows the user to adjust functions related to the input signals to the EF2241. This menu contains ACOUSTIC ECHO CANCELLATION, AUTOMATIC GAIN CONTROL, AGC MAXIMUM, AGC MINIMUM, GAIN ADJUST, LEVEL MIC/LINE,

MUTE, NOISE CANCELLATION, NOISE CANCELLATION LEVEL, PHANTOM POWER, REFERENCE ASSIGN, and AEC SUPPRESSION. The menu is organized around the Inputs (1-4) and (A-D), so that you first select an input and then select settings for that input. You can also choose to apply the settings to all Inputs, Inputs 1-4, or Inputs A- D.

Acoustic Echo Cancellation. This allows you to enable or disable the acoustic echo canceller on a particular channel. The default is On.

Automatic Gain Control (Inputs 1-4, T). This enables automatic gain con-

trol (AGC) on Inputs 1-4 and T. The default is On.

AGC Max (Inputs 1-4, T). Sets the maximum gain value that the AGC can apply for Inputs 1-4 and T.

AGC Min (Inputs 1-4, T). Sets the minimum gain value that the AGC can apply for Inputs 1-4 and T.

Gain. This parameter adjusts the gain level of the 8 inputs. This is normally config- ured during the calibration process. The default setting is 15 dB for microphone signals and 0 dBu for line level signals. See “Level” above for setting mic/line level for Inputs 1-4. The LEVEL INDICATOR on the front panel automatically reflects the level of the channel whose gain is being adjusted.

Level. Use this parameter to select mic or line level on Inputs 1-4.

Mute. This selects which input channel (1-4, A-D) or the W, X, Y, or Z input is muted. The default is not muted.

Noise Cancellation (Inputs 1-4, T). This allows you to enable or disable

noise cancellation.

Noise Cancellation Level (Inputs 1-4, T). Selects the level of noise can-

cellation. This ranges from 0 to 15 dB. The default is 10 dB.

Phantom Power. Use this parameter to turn phantom power On or Off for inputs 1-4.

Echo Canceller Reference. This parameter decides which reference is associ- ated with which zone. Choose between REF1, REF2, or the external bus reference.

AEC Suppression. Sets the amount of double talk suppression used in the AEC. The values correspond to the following settings: 1 = No Suppression, 2 = Light Sup- pression, 3 = Heavy Suppression, 4 = Half-Duplex.

Line Echo Cancellation. Enables or disables the echo cancellation on the phone line.

Dynamics Processing. Enables or disables compression on Input T.

LEC Suppression. Sets the amount of suppression used the line echo canceller (LEC).

VORTEX EF2241 Reference Manual

30

Technical Support: 800.932.2774

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Contents Vortex EF2241 Reference Manual Page Introduction Welcome How to Use This Manual IntroductionProduct Product FeaturesProduct Registration 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 Check Surrounding Equipment Presets Multiple Vortex DevicesPick a Standard Signal Level Configure Program Audio Sources Calibration Input SettingsIntegrating the EF2241 Into Your System 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 SettingsBuilding Your System with Multiple Vortex Devices Configure the Matrix MixerDefault Settings Configure the submatrix Assign Inputs Assign OutputsEF BUS Configure Your Echo Canceller Reference PresetsOther EF2241 Features 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 US Telco requirements ComplianceUSA and Canada 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 Instructions Connecting Unbalanced RCA to Balanced Mini PhoenixMaking AN EF BUS Terminator 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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