Polycom manual Integrating the EF2241 Into Your System, Input Settings, Calibration

Page 17

INTEGRATING THE EF2241 INTO YOUR SYSTEM

INTEGRATING THE EF2241 INTO YOUR SYSTEM

Operating the EF2241

The EF2241 can be operated in two ways: through the LCD menu on the front panel or through RS-232. For control via RS-232, please refer to the EF2241 Programming Guide, which includes programming tips as well as the EF2241 RS-232 commands. For operation using the PC control software, Conference Composer, please refer to the Conference Composer User Guide.

Use Conference Composer software to easily configure the EF2241 with a PC, or refer to the Applications Guide for different configurations that are already pro- grammed into factory presets.

INPUT SETTINGS

Set Inputs 1-4 for Mic or Line Level

Select Phantom Power for Inputs 1-4

Configure Inputs 1-4 for mic or line level using the LCD menu (See “Level” on page 30) or Conference Composer Control Software (See the Conference Composer User Guide).

Turn phantom power On or Off for Inputs 1-4 using the LCD menu (See “Phantom Power” on page 30) or Conference Composer Control Software (See the Conference Composer User Guide). Phantom power should be turned On for condenser and elec- tret microphones.

CALIBRATION

Set Mic/Line

Input Channel

Gains

When using the factory default, Preset 0, the following calibration can be used.

In Preset 0, Automatic Gain Control (AGC) is On and the microphone gains on Inputs 1-4 are set to 15 dB. The AGC will compensate for the microphone gain. If you are using ceiling microphones, set the microphone gain to 28 dB.

Fine tune the Input Gain using the Automatic Gain Control (AGC) meter on Conference Composer Software. In the Conference Composer

Software, go to the DIAGNOSTICS page. Watch the meter labelled AGC while someone is talking into the particular channel that you are adjusting. Watch the number in the box at the bottom of the AGC meter (See Figure 9 below). This is the amount of gain that the AGC is applying. The goal is to have the AGC meter on average staying around 0. If the level that you see in the box is negative, decrease the input gain by the average number that you see in the box because the AGC is attenuating the chan- nel’s input gain because the level is too high. If the number in the box is positive, increase the input gain on that channel because the AGC is boosting the signal because it is too low. For example, if the meter is showing an average gain of -15 dB,

© Polycom, Inc.

15

VORTEX EF2241 Reference Manual

Page 16 Page 18
Image 17
Page 16 Page 18
Contents Vortex EF2241 Reference Manual Page Introduction Introduction Welcome How to Use This ManualProduct Product FeaturesProduct Registration Inputs Outputs Remote Control Tools Needed for Installation PRE-INSTALLATIONWhat’s Included What’s Not IncludedEF2241 Front and Rear Panels PRE-INSTALLATION Connecting the EF2241 to Other Equipment InstallationMounting the EF2241 North American RequirementCodec Typical EF2241 ConnectionsDevice IDS on the EF BUS Connecting Multiple Vortex DevicesTerminating the EF2241 Factory Default Settings PresetOff 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 Build Your Echo Canceller Reference SET UP the Phone InterfaceEcho Canceller Reference for Multiple Vortex Devices Customize Setting for Your Particular ApplicationBus Reference Setting upAutomixer Parameters Configure the Automatic Microphone MixerGlobal Settings Channel Settings Automixer Settings for Multiple Vortex DevicesBuilding Your System with Multiple Vortex Devices Configure the Matrix MixerDefault Settings Assign Inputs Assign Outputs Configure the submatrixEF BUS Configure Your Echo Canceller Reference PresetsOther EF2241 Features LCD Menu Tree LCD Menu StructureLCD Menu Structure System System MenuPhone Control Phone ControlInputs 1-4, T, A-D InputsAutomixer Menu OutputsGlobal Settings Mixer Settings Matrix Matrix MenuInput/Output EQ Channel Band Parametric EQ MenuMacros PresetsAutomatic 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 Room Gain Excessive Room GainIn-Conference Quick Check Excessive Microphone Amplification Nonlinearity InsufficientEmail vortex@polycom.com Contacting Technical SupportTechnical Specifications US Telco requirements ComplianceUSA and Canada Canadian Telco Requirements Automatic Dialing Telco ConnectorRest of World AustraliaThis page was intentionally left blank CE Mark R& TTE Directive Vortex EF2241 Reference Manual Technical Support Noise and Reverberation Consider Room Gain Conference System DesignEN Echo Canceller, Noise Canceller EF2241 Block DiagramEF Bus Connector PinoutsInput/Output Remote Control Port Instructions Connecting Unbalanced RCA to Balanced Mini PhoenixMaking AN EF BUS Terminator Additional Notes RMA# Must be on package Warranty InformationState Law Rights What this warranty does not coverDefinition of Terms Echo CancellerAcoustic Echo Crosspoint Mix Minus BusNOM NOM Attenuation NOM Bus Presets Room GainDefinition of Terms Index NOM Index Page 1725-80098-001-C
Top Page Image Contents