Polycom EF2241 - Manuals - manualsarea.com

Page 4 - Reference Manual; NTRODUCTION; Welcome

I NTRODUCTION V ORTEX EF2241 Reference Manual 2 Technical Support: 800.932.2774 I NTRODUCTION Welcome Congratulations on your purchase of the Vortex EF2241! How to Use This Manual This is a reference manual for your EF2241. It is structured to provide the informa-tion you need quickly and convenient...

Page 5 - RODUCT; Product

I NTRODUCTION © Polycom, Inc. 3 V ORTEX EF2241 Reference Manual busses equals 12 inputs), and 2 mixes of the P Bus for the telephone. The 23 x 17 main matrix has the following outputs: Outputs 1-4 and A-D, AEC Reference 1 and 2, W, X, Y, and Z outputs to the digital expansion bus, P output to the di...

Page 6 - Inputs and

I NTRODUCTION V ORTEX EF2241 Reference Manual 4 Technical Support: 800.932.2774 Inputs and Outputs • 4 microphone/line level inputs with phantom power on each input • 24 VDC Phantom Power • 4 line level auxiliary inputs with nominal level of 0 dBu • 8 line level outputs with default nominal level of...

Page 7 - RE; What’s Included

P RE -I NSTALLATION © Polycom, Inc. 5 V ORTEX EF2241 Reference Manual P RE -I NSTALLATION What’s Included The Vortex EF2241 product package includes the following items: • Vortex EF2241 Reference Manual • Vortex EF2241 • External power supply • Cat 5 cable for EF Bus • Telephone cable • Rack mount s...

Page 8 - RONT

P RE -I NSTALLATION V ORTEX EF2241 Reference Manual 6 Technical Support: 800.932.2774 EF2241 F RONT AND R EAR P ANELS 1. LCD D ISPLAY . Displays menu instructions for configuration and operation of the EF2241. 2. D OWN B UTTON . Scrolls backward through menu items at a particular level or decreases ...

Page 10 - NSTALLATION; Remove the screw and thread the power cord through the cable clamp.

I NSTALLATION V ORTEX EF2241 Reference Manual 8 Technical Support: 800.932.2774 I NSTALLATION This equipment is intended to only be installed by qualified service personnel. The equipment shall be connected to a socket-outlet that provides a protective earthing connection. North American Requirement...

Page 11 - Connections; The following steps are typically used to set up the EF2241:

I NSTALLATION © Polycom, Inc. 9 V ORTEX EF2241 Reference Manual Typical EF2241 Connections The EF2241 will typically be connected to other equipment in a single room setup as shown below in Figure 5 and Figure 6. The following steps are typically used to set up the EF2241: • Connect a microphone to ...

Page 12 - ID; transmit

I NSTALLATION V ORTEX EF2241 Reference Manual 10 Technical Support: 800.932.2774 • Connect speaker output to loudspeaker. • If RS-232 remote control is desired, connect the RS-232 R EMOTE C ONTROL port of the EF2241 to the remote control device, such as an RS-232 interface to a touch panel or a COM ...

Page 13 - Terminating the; ACTORY; ronment and then save it within the EF2241 as a U

I NSTALLATION © Polycom, Inc. 11 V ORTEX EF2241 Reference Manual Terminating the EF2241 The EF2241 is self-terminating so if you are connecting multiple EF2241s, the EF Bus does NOT need to be terminated. However, if you are linking the EF2241 to EF2280s, terminate the EF Bus link. F ACTORY D EFAULT...

Page 15 - to the User Preset that you have saved; HECK; Configure the matrix mixer output to the codec input.; The output

I NSTALLATION © Polycom, Inc. 13 V ORTEX EF2241 Reference Manual Presets and Multiple Vortex Devices P RESET 0 is preconfigured for a system with multiple Vortex devices. In Preset 0, microphones are bussed out to other units on the W Bus. Microphones are also input into each device on the W Bus (I ...

Page 16 - Configure the matrix mixer input from the codec output.; The input; Verify Room Gain; meter on the D; page of Conference Composer. The Room; Configure

I NSTALLATION V ORTEX EF2241 Reference Manual 14 Technical Support: 800.932.2774 Configure the matrix mixer input from the codec output. The input gain of the matrix mixer should be set to match the nominal output level of the codec. For example, if the codec outputs a -10 dBV (-8 dBu) level, 8 dB o...

Page 17 - NTEGRATING; NPUT; In the Conference Composer; page. Watch the meter labelled

I NTEGRATING THE EF2241 I NTO Y OUR S YSTEM © Polycom, Inc. 15 V ORTEX EF2241 Reference Manual I NTEGRATING THE EF2241 I NTO Y OUR S YSTEM 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 t...

Page 18 - Set Levels on Line; AGC Meter on the Diagnostics page of the Conference Composer soft-

I NTEGRATING THE EF2241 I NTO Y OUR S YSTEM V ORTEX EF2241 Reference Manual 16 Technical Support: 800.932.2774 you should increase your input gain by 15 dB. If the meter shows an average gain of +10 dB, you should decrease your input gain by 10 dB. Set Levels on Line Input Channels Set the line inpu...

Page 20 - Setting up the; Exported Signals to R; Only one device can put an echo canceller

I NTEGRATING THE EF2241 I NTO Y OUR S YSTEM V ORTEX EF2241 Reference Manual 18 Technical Support: 800.932.2774 for their echo canceller, or they can use their own internal references. The references may include a mix of any input, with crosspoint gains, including W, X, Y, and Z bus-ses. Set the EF B...

Page 21 - audio and program audio sources.; ONFIGURE; If you would like to set automixer; Automixer; Matrix page of linked devices

I NTEGRATING THE EF2241 I NTO Y OUR S YSTEM © Polycom, Inc. 19 V ORTEX EF2241 Reference Manual If far end audio and program audio sources are on several Vortex devices. 1. Bus each far end audio and program audio source to each device. Do this by assigning each signal input to either the W, X, Y or ...

Page 22 - Camera Gating Threshold.

I NTEGRATING THE EF2241 I NTO Y OUR S YSTEM V ORTEX EF2241 Reference Manual 20 Technical Support: 800.932.2774 Local Max NOM, Global Max NOM, Off Attenuation, Threshold Type, Gating Mode, Adaptive Threshold, Manual Threshold, and Gate Priority. Global Settings. Decay Time. Decay time is the amount o...

Page 26 - EF B; Crosspoint Mix Minus Bus.; Each Vortex device in the system can create four

T HE EF B US V ORTEX EF2241 Reference Manual 24 Technical Support: 800.932.2774 T HE EF B US The EF Bus is a high speed, low delay digital bus that includes the W, X, Y, and Z audio busses, the P bus, as well as the echo canceller bus reference and remote control information (for other EF devices). ...

Page 27 - Echo Canceller; RESETS; to the User Preset you have saved to. The; THER

T HE EF B US © Polycom, Inc. 25 V ORTEX EF2241 Reference Manual EF Bus Reference. In a system with multiple devices, if all devices need the same echo canceller reference, one device should be designated to put its echo cancel-ler reference (either Ref 1 or Ref 2) on the EF bus to be used as the EF ...

Page 28 - ENU; ENU; LCD Menu Tree

LCD M ENU S TRUCTURE V ORTEX EF2241 Reference Manual 26 Technical Support: 800.932.2774 LCD M ENU S TRUCTURE LCD Menu Tree The EF2241 LCD menu structure is made up of nine menu trees: S YSTEM , P HONE C ONTROL , I NPUTS , O UTPUTS , A UTOMIXER , M ATRIX , P ARAMETRIC EQ, P RESETS , and M ACROS . Eac...

Page 30 - YSTEM; Acknowledgement Mode.; Front Panel Passcode.; aspi; Last Restored Preset.

LCD M ENU S TRUCTURE V ORTEX EF2241 Reference Manual 28 Technical Support: 800.932.2774 S YSTEM M ENU The S YSTEM menu contains P OWER O N P RESET , A CKNOWLEDGEMENT M ODE , B US R EFERENCE , E RROR M ESSAGES , F RONT P ANEL L OCK , F RONT P ANEL P ASSWORD , D EVICE ID, B AUD R ATE , F LOW C ONTROL ...

Page 31 - HONE; Auto Hangup Call Progress.

LCD M ENU S TRUCTURE © Polycom, Inc. 29 V ORTEX EF2241 Reference Manual P HONE C ONTROL Auto Answer. Enables or disables auto answer. Auto Hangup Call Progress. Enables or disables auto hangup based on call progress messages. Auto Hangup Loop Drop. Enables or disables auto hangup cased on loop drop....

Page 32 - NPUTS; Acoustic Echo Cancellation.; The default setting is 15 dB for microphone; Echo Canceller Reference.

LCD M ENU S TRUCTURE V ORTEX EF2241 Reference Manual 30 Technical Support: 800.932.2774 I NPUTS The input menu allows the user to adjust functions related to the input signals to the EF2241. This menu contains A COUSTIC E CHO C ANCELLATION , A UTOMATIC G AIN C ONTROL , AGC M AXIMUM , AGC M INIMUM , ...

Page 33 - UTPUTS; The default setting is 0 dBu.; Output Delay Enable.; UTOMIXER; Outputs

LCD M ENU S TRUCTURE © Polycom, Inc. 31 V ORTEX EF2241 Reference Manual Phone Input Gain. This parameter adjusts the gain level of the Phone input. Phone AGC. Enables or disables automatic gain control on the Phone. O UTPUTS The O UTPUT menu contains G AIN , NOM A CTIVE , and M UTE . As with the I N...

Page 34 - Decay time is the amount of time the microphone audio takes to; Global Settings

LCD M ENU S TRUCTURE V ORTEX EF2241 Reference Manual 32 Technical Support: 800.932.2774 T HRESHOLD , M ANUAL T HRESHOLD , and G ATE P RIORITY . Global Settings. Decay Time. Decay time is the amount of time the microphone audio takes to ramp down to the Off Attenuation level after Hold Time. Decay Ti...

Page 36 - Matrix; SubMatrix

LCD M ENU S TRUCTURE V ORTEX EF2241 Reference Manual 34 Technical Support: 800.932.2774 Gate Priority. The priority of each microphone can be assigned a value ranging from 1 to 4. Priority 1 microphones have priority over priority 4 microphones for gating. The default is to have all microphones set ...

Page 37 - ARAMETRIC; EQ M; menu; Band

LCD M ENU S TRUCTURE © Polycom, Inc. 35 V ORTEX EF2241 Reference Manual P ARAMETRIC EQ M ENU The input equalizer is comprised of up to 5 bands of filtering. The whole group of fil-ters for the channel can also be enabled/disabled without losing the settings for each band. For each band, you first se...

Page 38 - Restores the selected preset.; ACROS; Allows you to run macros from the front panel menu.; Presets; Macros submenu

LCD M ENU S TRUCTURE V ORTEX EF2241 Reference Manual 36 Technical Support: 800.932.2774 P RESETS Restore. Restores the selected preset. Save. Saves the selected user preset (Presets 16-47). Factory presets (Preset 0-15) cannot be overwritten. Delete. Deletes the selected user preset (Presets 16-47)....

Page 39 - ROUBLESHOOTING; UTOMATIC; Check if the microphones are muted.

T ROUBLESHOOTING © Polycom, Inc. 37 V ORTEX EF2241 Reference Manual T ROUBLESHOOTING A UTOMATIC M ICROPHONE M IXER No microphones are gating • Check if the microphones are muted. • Are microphones part of one of the 2 automixers? Some microphones are not gating • Check if the microphones are assigne...

Page 40 - Don’t hear output; Make sure the output is not muted.; Room Audio

T ROUBLESHOOTING V ORTEX EF2241 Reference Manual 38 Technical Support: 800.932.2774 M ATRIX M IXER Don’t hear output • Make sure the output is not muted. • Check that the input you’re expecting to hear is included in the output that you’re listening to. E CHO C ANCELLER R EFERENCE Room Audio Sounds ...

Page 41 - Finding the

T ROUBLESHOOTING © Polycom, Inc. 39 V ORTEX EF2241 Reference Manual Reverberation is not an artifact of the echo canceller. It is mainly affected by the dis-tance of the microphone from the speech source and by the resonances of the room. While reverberation can be unpleasant, it is not compensated ...

Page 42 - Excessive Room; Excessive room gain can be caused through a number of mechanisms:

T ROUBLESHOOTING V ORTEX EF2241 Reference Manual 40 Technical Support: 800.932.2774 and the level of this signal that is reflected as the microphone input (after microphone amplification). If the electrical level of the reflected signal picked up by microphone is the same as the level of the electri...

Page 43 - Quick Check; Excessive microphone amplification

T ROUBLESHOOTING © Polycom, Inc. 41 V ORTEX EF2241 Reference Manual talker to the microphone. The microphone audio will most likely also be muddy and reverberant. The installer or user may try to solve these microphone audio quality problems by turning up the microphone amplification, thus adding to...

Page 44 - Insufficient; during normal conferencing conversation. The first yellow LED; Nonlinearity; If you adjust the M

T ROUBLESHOOTING V ORTEX EF2241 Reference Manual 42 Technical Support: 800.932.2774 Nonlinear distortion causes a degradation or divergence of the AEC’s internal model of the room acoustics. In this situation, the EF2241 cannot effectively cancel room echoes and a substantial amount of echo may be h...

Page 45 - ONTACTING

T ROUBLESHOOTING © Polycom, Inc. 43 V ORTEX EF2241 Reference Manual If you suspect the loudspeaker is introducing nonlinearities into the room acoustic path, take these steps to minimize its influence on the echo canceller. • Keep the loudspeaker’s volume level at less than three-eighths of full sca...

Page 46 - ECHNICAL

T ECHNICAL S PECIFICATIONS V ORTEX EF2241 Reference Manual 44 Technical Support: 800.932.2774 T ECHNICAL S PECIFICATIONS M ECHANICAL S PECIFICATIONS Dimensions 19” (483 mm) W x 9.6” (244 mm) L x 1.75” (45 mm) H (full rack unit) Weight 4 lb. (1.8 kg) dry5.5 lb. (2.5 kg) shipping Connectors Audio: Min...

Page 47 - OMPLIANCE; USA and Canada; NOTE; US Telco; Notes

T ECHNICAL S PECIFICATIONS © Polycom, Inc. 45 V ORTEX EF2241 Reference Manual C OMPLIANCE The Vortex EF2241 complies with the ITU G.167 Recommendation for AEC, FCC part 15, and CE requirements. USA and Canada This device complies with part 15 of the FCC Rules. Operation is subject to the following t...

Page 48 - REN; NOTICE

T ECHNICAL S PECIFICATIONS V ORTEX EF2241 Reference Manual 46 Technical Support: 800.932.2774 • If, in the unlikely event that this equipment causes harm to the network, the tele-phone company will notify you in advance that temporary discontinuance of ser-vice may be required. But if advance notice...

Page 49 - Australia; Warning; Rest of World

T ECHNICAL S PECIFICATIONS © Polycom, Inc. 47 V ORTEX EF2241 Reference Manual NOTICE : The Ringer Equivalence Number (REN) assigned to each relevant termi- nal device provides an indication of the maximum number of terminals allowed to be connected to a telephone interface. The termination on an int...

Page 51 - Directive; grundlæggende krav og de relevante punkter i direktiv 1999/5/EF.; ∆ήλωση; musten ja sen muiden tätä koskevien säännösten mukainen.

© Polycom, Inc. 47 V ORTEX EF2241 Reference Manual CE Mark R& TTE Directive This EF2241 has been marked with the CE mark. This mark indicates compliance with EEC Directives 89/336/EEC, 73/23/EEC 1999/5/EC. A full copy of the Decla-ration of Conformity can be obtained from Polycom Ltd, 270 Bath R...

Page 53 - ONFERENCE; Noise and

C ONFERENCE S YSTEM D ESIGN © Polycom, Inc. 49 V ORTEX EF2241 Reference Manual C ONFERENCE S YSTEM D ESIGN Good audio or video conferencing is more than acoustic echo cancellation. Before installing the EF2241, you should consider how your whole conference system will work together. The goals of con...

Page 54 - LOCK

EF2241 B LOCK D IAGRAM V ORTEX EF2241 Reference Manual 50 Technical Support: 800.932.2774 EF2241 B LOCK D IAGRAM Figure 30. Inside the EF2241 Copyri ght ( c) 200 1, P ol yc om I nc . A ll Ri ght s R es erve d Ec h o Cance ll er Noi se Can cel le r R1, R2, Bus A/ D Le ve l ad ju st M ic /Line 2 +- EN...

Page 55 - ONNECTOR; EF Bus

C ONNECTOR P INOUTS © Polycom, Inc. 51 V ORTEX EF2241 Reference Manual C ONNECTOR P INOUTS EF Bus The EF Bus uses RJ45 connectors. These should be used with category five twisted-pair cable.The total distance of the EF Bus should be less than 4.5 m.The EF Bus must be connected so that the EF Bus In ...

Page 56 - Note; Input/Output Remote Control Port

C ONNECTOR P INOUTS V ORTEX EF2241 Reference Manual 52 Technical Support: 800.932.2774 Note The information below lists manufacturer information for the Phoenix connector that is compatible with the parts we use: Manufacturer: Phoenix ContactDescription: Mini-COMBICON 3-position plug, 3.5 mm pitchTy...

Page 57 - RCA; Instructions; RCA Male; Do NOT connect the shield at both ends.; The terminator

C ONNECTOR P INOUTS © Polycom, Inc. 53 V ORTEX EF2241 Reference Manual C ONNECTING U NBALANCED RCA TO B ALANCED M INI P HOENIX 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. M AKING AN EF B US T ERMIN...

Page 58 - DDITIONAL

C ONNECTOR P INOUTS V ORTEX EF2241 Reference Manual 54 Technical Support: 800.932.2774 A DDITIONAL N OTES Caution! Failure to use all four screws to attach the EF2241 to the rack may result in uneven loading and cause a safety hazard. Caution! Ensure that the power supply is securely located such th...

Page 59 - ARRANTY; Any defect in materials or workmanship.

W ARRANTY I NFORMATION © Polycom, Inc. 55 V ORTEX EF2241 Reference Manual W ARRANTY I NFORMATION What is covered Any defect in materials or workmanship. For how long Two years. What we will do If your Vortex EF2241 product is defective and returned within two years of the date of purchase, we will r...

Page 61 - EFINITION

D EFINITION OF T ERMS © Polycom, Inc. 57 V ORTEX EF2241 Reference Manual D EFINITION OF T ERMS Acoustic Echo Acoustic echo occurs in a conferencing or distance learning system when the remote speech played in the loudspeakers is picked up by microphones in the room and is transmitted back to the rem...

Page 64 - NDEX

I NDEX V ORTEX EF2241 Reference Manual 60 Technical Support: 800.932.2774 I NDEX A Acoustic Echo Cancellation, AEC ........................................................2, 12, 17, 30, 38, 40, .............................................................................................................

Page 68 - Polycom

Polycom, Inc.Installed Voice Business Group1720 Peachtree Street NW, Suite 220Atlanta, GA 30309-2439Phone: (800) 932-2774, (404) 892-3200Fax: (404) 892-2512www.polycom.com Technical Support:(800) [email protected] Polycom ® , Vortex ® , and the Polycom logo are registered trademarks of Poly...