Manuel d'utilisation / d'entretien du produit EF2241 du fabricant Polycom
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V ortex EF2241 Reference Manual.
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V ORTEX EF2241 R EFERENCE M ANUAL Polycom, Inc., Copyright 2 002 1 Technical Support: 800.932.2774 Introduction ....................................................................................................2 Product Features .............. .....
I NTRODUCTION V ORTEX EF2241 Reference Manual 2 Technical Support: 800.932.2774 I NTRODUCTION Welcome Congratulations on your pu rchase of the V ortex EF2241! How to Use This Manual This is a reference manual for your EF2241. It is stru ctured to provide the informa- tion you need quickly and conveniently .
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 outp uts: Outputs 1-4 a.
I NTRODUCTION V ORTEX EF2241 Reference Manual 4 Technical Support: 800.932.2774 Inputs and Outputs • 4 microphone/line level in puts with phantom power on each input • 24 VDC Phantom Power • 4 l.
P RE -I NSTALLATION © Polycom, Inc. 5 V ORTEX EF2241 Reference Manual P RE -I NSTALLATION What’s Included The V ortex EF2241 product packag e includes the following items: • V ortex EF2241 Refere.
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 . Display s menu instructions for configuration and operation of th e EF2241. 2. D OWN B UTTON . Scrolls backward through menu items at a particular level or decreases the value of a parameter .
P RE -I NSTALLATION © Polycom, Inc. 7 V ORTEX EF2241 Reference Manual 10. I NPUT P ARALLEL P ORT . Parallel logic input. 11 . O UTPUT P ARALLEL P ORT . Parallel logic output. 12. EF B US I N . Connects to EF B US O UT of another V ortex device. 13. EF B US O UT .
I NSTALLATION V ORTEX EF2241 Reference Manual 8 Technical Support: 800.932.2774 I NSTALLATION This equipment is intended to only be inst alled by qu alified service personnel. The equipment shall be connected to a socket-o utlet that provides a protective earthing connection.
I NSTALLATION © Polycom, Inc. 9 V ORTEX EF2241 Reference Manual Typical EF2241 Connections The EF2241 will typically be connected to other equipm ent in a single room setup as shown below in Fig ure 5 and Figure 6. The following steps are typically used to set up the EF2241: • Connect a microphone to each of the 4 mi c/line level inputs.
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 de vice, such as an RS-232 interface to a touch panel or a CO M port on a personal computer .
I NSTALLATION © Polycom, Inc. 11 V ORTEX EF2241 Reference Manual Terminating the EF2241 The EF2241 is self-terminating so if y ou are connecting mu ltiple EF2241s, the EF Bus does NOT need to be terminated. However , if you are linking the EF2241 to EF2280s, terminate the EF Bus link.
I NSTALLATION V ORTEX EF2241 Reference Manual 12 Technical Support: 800.932.2774 whichever preset you want to come up afte r power up). The unit will need to be con- figured for your syst em.
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 V ortex devices. In Preset 0, microphones are bussed out to oth er units on the W Bus. Microphones are also input into each device on the W Bus (I NPUT WM0 in the Matrix) .
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 shou ld be set to match the n ominal output level of the codec.
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: th rough the LCD menu on the front panel or through RS-232.
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 in put gain by 15 dB.
I NTEGRATING THE EF2241 I NTO Y OUR S YSTEM © Polycom, Inc. 17 V ORTEX EF2241 Reference Manual Customize Setting for Your Particular Application The following sections will describe custo mizing parameters on the EF2241 for your particular application if you are not using Preset 0.
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 us e their own internal references. The references may include a m ix of any input, with crossp oint gains, includin g W , X, Y , and Z bus- ses.
I NTEGRATING THE EF2241 I NTO Y OUR S YSTEM © Polycom, Inc. 19 V ORTEX EF2241 Reference Manual If far end audio and program audi o sources are on several V ortex devices. 1. Bus each far end audio and program audi o source to each device. Do this by assigning each signal input to either the W , X, Y or Z bus.
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 T ype, Gating Mode, Adaptive Thresh old, Manual Threshold, an d Gate Priority . Global Settings.
I NTEGRATING THE EF2241 I NTO Y OUR S YSTEM © Polycom, Inc. 21 V ORTEX EF2241 Reference Manual (NOM) limit for each linked automixer . The maxi mum value for this command is 64. This NOM limit is a “global” limit, meanin g that this limit applies to all linked automixers with the same Bus ID.
I NTEGRATING THE EF2241 I NTO Y OUR S YSTEM V ORTEX EF2241 Reference Manual 22 Technical Support: 800.932.2774 Automixer and Bus Mixer Settings T o operate the V ortex device in any of the above possibilites, two global parameters need to be changed: the A UTOMI XER and the B US M IXER (see Figure 14).
I NTEGRATING THE EF2241 I NTO Y OUR S YSTEM © Polycom, Inc. 23 V ORTEX EF2241 Reference Manual 1. Assign Inputs Assign each audio source to an input. Re member to include the conferencing equip- ment such as a video codec and any program audio.
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 digita l bus that includes the W , X, Y , and Z audio busses, the P bus, as well as the ech o canceller bus reference and remote control information (for other EF devi ces).
T HE EF B US © Polycom, Inc. 25 V ORTEX EF2241 Reference Manual EF Bus Reference. In a system w ith multiple de vices, 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 Bus Reference.
LCD M ENU S TRUCT URE 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 UTPU TS , A UTOMIXER , M ATRIX , P ARAM ETRIC EQ, P RESETS , and M ACROS .
LCD M ENU S TRUCT URE © Polycom, Inc. 27 V ORTEX EF2241 Reference Manual must be flashing. T o make the parameter flash (assuming the front panel is not locked) press E NTER . Once the parameter is flashing, use the U P and D OWN buttons to adjust the parameter value.
LCD M ENU S TRUCT URE V ORTEX EF2241 Reference Manual 28 Technical Support: 800.932.2774 S YSTEM M ENU The S YSTEM menu co ntains P OWER O N P RESET , A CKNOWLED GEMENT M ODE , B US R EFERENCE , E RRO.
LCD M ENU S TRUCT URE © 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.
LCD M ENU S TRUCT URE V ORTEX EF2241 Reference Manual 30 Technical Support: 800.932.2774 I NPUTS The input menu allows the user to adjust function s related to the input signals to the EF2241.
LCD M ENU S TRUCT URE © Polycom, Inc. 31 V ORTEX EF2241 Reference Manual Phone Input Gain. This parameter adjusts the gain level of the Phone in put. 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 .
LCD M ENU S TRUCT URE V ORTEX EF2241 Reference Manual 32 Technical Support: 800.932.2774 T HRESHOLD , M ANUAL T HRESHOLD , an d G ATE P RIORITY . Global Settings. Decay T ime. Decay time is the amount of time the microphone audio takes to ramp down to the Off Attenuation level after Hold T ime.
LCD M ENU S TRUCT URE © Polycom, Inc. 33 V ORTEX EF2241 Reference Manual Mixer Settings. Bus Mixer . This command is used to assign one of the two internal automixers to one of the EF Bus automixer groups.
LCD M ENU S TRUCT URE 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 microphon es have priority over priority 4 microphones for gating.
LCD M ENU S TRUCT URE © Polycom, Inc. 35 V ORTEX EF2241 Reference Manual P AR AMETRIC 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.
LCD M ENU S TRUCT URE 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 pr eset s (Preset 0-15) cannot be overwritten. Delete.
T ROUBLES HOOTING © Polycom, Inc. 37 V ORTEX EF2241 Reference Manual T ROUBLESHOOTING A UTOMATIC M ICROPHONE M IX ER No microphones are gating • Check if the micr ophones are muted. • Are microphones part of one of the 2 automixers? Some microphones are not gating • Check if the microphones ar e assigned to an automixer .
T ROUBLES HOOTING 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 exp ecting to hear is included in the output th at you’re listening t o.
T ROUBLES HOOTING © Polycom, Inc. 39 V ORTEX EF2241 Reference Manual Reverberation is not an artifact of the echo can celler . It is mainly affected by the dis- tance of the microphone from the speech source and by the resonances of the room.
T ROUBLES HOOTING V ORTEX EF2241 Reference Manual 40 Technical Support: 800.932.2774 and the level of this signal that is reflected as the microph one input (after microphone amplification).
T ROUBLES HOOTING © Polycom, Inc. 41 V ORTEX EF2241 Reference Manual talker to the microphone. The m icrophone audio will most li kely 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 the room gain.
T ROUBLES HOOTING 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 situatio n, the EF2241 cannot ef fectively cancel room echoes and a substantial amount of echo may be heard by the remote part y .
T ROUBLES HOOTING © Polycom, Inc. 43 V ORTEX EF2241 Reference Manual If you suspect the loudspeaker is introducing nonlinearities int o the room acoustic path, take t hese steps to mini mi ze its influence on the echo canceller . • Keep the loudspeaker ’ s volume level at less than three-eighths of full scale.
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) W e ight 4 lb. (1.
T ECHNICAL S PECIFICATIONS © Polycom, Inc. 45 V ORTEX EF2241 Reference Manual C OMPLIANCE The V ortex 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 th e FCC Rules.
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 tha t temporary discontinuance of ser- vice may be r equir ed.
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 indi cation of the maximum nu mber of terminal s allowed to be connected to a telephone interface.
T ECHNICAL S PECIFICATIONS V ORTEX EF2241 Reference Manual 48 Technical Support: 800.932.2774 This page was intentionally left blank..
© 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 Road, Sl ough, Berkshire, SL1 4DX, U K.
V ORTEX EF2241 Reference Manual 48 Technical Support: 800.932.2774 Polycom Ltd. förklarar härmed att d enna EF2241 överensst ämmer med de väsentliga kraven och övriga relevan ta stadganden i d irektiv 1999/5/EG .
C ONFERE NCE 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 .
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 Copyright (c) 2001, Polycom Inc.
C ONNECTOR P INOUTS © Polycom, Inc. 51 V ORTEX EF2241 Reference Manual C ONNECTOR P INOUTS EF Bus The EF Bus uses RJ45 conn ectors. These should be used with category five twisted-pair cable. The total distance of the EF Bus should be les s than 4.5 m.
C ONNECTOR P INOUTS V ORTEX EF2241 Reference Manual 52 Technical Support: 800.932.2774 Note The information below lists ma nufactur er information for the Phoeni x connector that is compatible with the parts we use: Manufacturer: Phoenix Contact Description: Mini-COMBICON 3-positio n plug, 3.
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 T ip to Phoenix pin 1. 2. Connect RCA Ring to Phoenix pin 2. 3. Connect Phoenix pin 3 to Shield, and leave Shield fl oating on RCA end.
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 h a zard. Caution! Ensure that the power su pply is securely located such that it cannot become dislodged and fall.
W ARRANTY I NFORMATION © Polycom, Inc. 55 V ORTEX EF2241 Reference Manual W ARRANTY I NFORMATION What is covered Any defect in materials or workmanshi p.
W ARRANTY I NFORMATION V ORTEX EF2241 Reference Manual 56 Technical Support: 800.932.2774 What this warranty does not cover This warranty does not cover defects resul ting from accidents, damage while.
D EFINITIO N 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 pick ed up by microphones in the room and is transmitted back to the remote end.
D EFINITIO N OF T ERMS V ORTEX EF2241 Reference Manual 58 Technical Support: 800.932.2774 EF Bus The EF Bus is a digital bus that includes the W , X, Y , and Z audio busses as well as the echo canceller reference and remote control information. It can be used to link multiple V ortex devices.
D EFINITIO N OF T ERMS © Polycom, Inc. 59 V ORTEX EF2241 Reference Manual room 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 outp ut to your amplifier , that microphone chan nel has positive room gain.
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, ........................................................
I NDEX © Polycom, Inc. 61 V ORTEX EF2241 Reference Manual F Factory Default Settings, Preset 0 .....................................................11, 13, 15, 22 Front Panel Lock ......................................................................
I NDEX V ORTEX EF2241 Reference Manual 62 Technical Support: 800.932.2774 .................................................................................................................58 Power Amplifier .............................................
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Po lycom, Inc. Installed V oice Business Group 1720 Pe achtree Street NW , Suite 220 Atlanta, GA 30309-2439 Phone: (800) 932-2774, (404) 892-3200 F ax: (404) 892-2512 www .polycom.com T echnical Support: (800) 932-2774 vor tex @p ol yco m.c om Pol y c om ® , Vortex ® , and the Poly com logo are re gistered trademarks of Polycom, Inc.
Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté Polycom EF2241 c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du Polycom EF2241 - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation Polycom EF2241, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le Polycom EF2241 va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le Polycom EF2241, mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du Polycom EF2241.
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le Polycom EF2241. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei Polycom EF2241 ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
