Polycom Vortex EF2210 Reference Manual
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Polycom Vortex EF2210 Reference Manual

Polycom ef2210 audio: user guide
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Vortex EF2211/EF2210
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  • Page 1 Vortex EF2211/EF2210 Reference Manual...

  • Page 3: Table Of Contents

    EF2211/EF2210 Front and Rear Panels... 5 Installation ...6 Mounting the EF2211/EF2210 ... 6 Connecting the EF2211/EF2210 to Other Equipment ... 6 Device IDs on the EF Bus... 8 Connecting Multiple Vortex Devices ... 8 Factory Default Settings (Preset 0) ... 9 Check Surrounding Equipment...

  • Page 4: Introduction

    This is a reference manual for your EF2211/EF2210. Information specific to the Manual EF2211 or EF2210 will be noted as such. The major difference between the EF2211 and the EF2210 is that the EF2210 does not have a phone interface.

  • Page 5: Features And Benefits

    Up to 32 user configurable presets, 16 factory presets, and 256 macros for flexi- ble control • May be linked with other Vortex devices via the EF Bus including EF2280, EF2241, EF2211, EF2210, EF2201, or other Polycom products © Polycom, Inc. EF2211/EF2210 Reference Manual ORTEX...

  • Page 6: Vortex Ef2211/Ef2210 Reference Manual

    EF Bus External Power Supply Figure 1. What’s Included with your Vortex EF2211/EF2210. What’s Not The following equipment is not included with the EF2211/EF2210 product package, Included but may be necessary to create a completely functional system: • Microphones •...

  • Page 7: Ef2211/Ef2210 Front And Rear Panels

    P disable the P * This feature is not available on the EF2210. 10. I * This feature is not available on the EF2210. 11. O * This feature is not available on the EF2210.

  • Page 8: Installation

    ONNECTING THE Grounding The EF2211/EF2210 has 1 mic/line input plus 2 line level inputs and 3 line level out- puts. Each input/output is “Pin 1 compatible” — this means that the ground pin of each input/output is tied to chassis ground. Chassis ground is connected to the input power ground.
  • Page 9 The EF2211/EF2210 will typically be connected to other equipment in a single room EF2210 setup as shown below in Figure 3 and Figure 4. Connections Figure 3. Block diagram of typical EF2211/EF2210 connections: a single room using one device. NOTE: The phone interface is not available on the EF2210. Vortex ®...

  • Page 10: Device Ids On The Ef Bus

    W, X, Y, and Z busses, and how many have the ability to transmit on the P Bus. The EF2210, for example can only transmit on the W, X, Y, and Z busses while the EF2211 can transmit on the W, X, Y, and Z busses as well as the P bus.

  • Page 11: Factory Default Settings (Preset 0)

    ACTORY EFAULT ETTINGS The following is a list of the factory default settings of the EF2211/EF2210. Since the microphone and other equipment in your application may have different nominal lev- els, you can start with a F environment and then save it within the EF2211/EF2210 as a U 16-47).
  • Page 12 Auto Answer Auto Hangup Call Progress Auto Hangup Loop Drop Dial Tone Gain DTMF Gain Ring Tone Enable EF2211/EF2210 Reference Manual ORTEX (or whichever preset you want to come up after power up). The unit will need ARAMETERS ARAMETERS HANNELS...

  • Page 13: Check Surrounding Equipment

    HECK URROUNDING Now that the physical connections to the EF2211/EF2210 are set up, it may be neces- sary to check the surrounding equipment to make sure levels are set correctly. The following suggestions may be helpful in integrating the EF2211/EF2210 into your...
  • Page 14 The meter shows the room gain, which is the relative level of the output level and the input level. While the EF2211/EF2210 will operate in positive room gain conditions, the room gain should be around 0 dB or a negative value. If you have a positive room gain, make adjustments in the following areas: Decrease the Input Gain of the microphone.
  • Page 15 Set the gain on the matrix mixer input from the program audio source so that program Program Audio audio is played into the room at a level similar to that of speech from the remote site. This should also ensure that the program audio level is good when sent to the remote Sources site.

  • Page 16: Integrating The Unit Into Your System

    NTEGRATING THE Operating the The EF2211/EF2210 can be operated in two ways: through the LCD menu on the EF2211/EF2210 front panel or through RS-232. For control via RS-232, please refer to the EF2211/ EF2210 Programming Guide, which includes programming tips as well as the EF2211/EF2210 RS-232 commands.
  • Page 17 Increase gain by the level shown in the box. Decrease gain by the level shown in the box. ORTEX YSTEM page. Watch the meter IAGNOSTICS AGC Level Meter Read AGC level DJUST THE NPUT AIN IN THIS WAY EF2211/EF2210 Reference Manual...

  • Page 18: Set Up The Phone Interface (Ef2211 Only)

    Send audio from the phone to the outputs on the same device by unmuting the cross- point of Input T on that output. Send audio from the phone to other linked devices by using the P bus output in the EF Bus. The linked devices can take the phone signal off the bus from the P Bus input.

  • Page 19: Echo Canceller Reference For Multiple Vortex Devices

    Bus Reference same Vortex device. For example, a system uses 1 EF2211, 1 EF2280, and 1 Polycom VS4000 video codec. The Reference 1 is set up on EF2280 with ID 0. The Matrix for this EF2280 in Conference Composer is shown in Figure 8 and the EF Bus page in Figure 9. Con- ference Composer will not allow more than one device assign their echo canceller ref- erence as the Bus Reference.

  • Page 20: Configure The Automatic Microphone Mixer

    ONFIGURE THE UTOMATIC The EF2211/EF2210 contains one automatic microphone mixer. Input 1 may be assigned to automatic mixer 1 or no automatic mixer. Set the input channel to use neither automatic mixer if an input is not actually a microphone, but is a program audio input.

  • Page 21: Global Settings

    Figure 11. Off Attenuation, Hold Time, Adaptive Threshold, and Decay Time. 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 Time values range from 0 to 5000 msec.

  • Page 22: Automixer Settings For Multiple Vortex Devices

    This value is set independently for the automixers. Automixer Reference. When enabled, the echo canceller reference becomes a muted input in the automix so that far end audio coming from the speakers does not gate on local microphones.

  • Page 23: Configure The Matrix Mixer

    0, or to a number that is different from any other automixer group parameter on all devices to the same automixer group. IXER IXER ULTIPLE ORTEX ORTEX YSTEM (see Figure 12). The A IXER ATRIX to 0 means that the automixer is IXER EVICES EF2211/EF2210 Reference Manual...
  • Page 24 1. Assign Inputs Assign each audio source to an input. Remember to include the conferencing equip- ment such as a video codec and any program audio. 2. Assign Outputs Try to assign as many outputs as you can to one Vortex device to make a simpler sub- matrix.

  • Page 25: The Ef Bus

    WM0, WM1, and WM2 are mixes that are input into the main matrix. The “M” denotes Mix. The EF2211 and EF2210 can transmit and receive signals on the W, X, Y, and Z bus- ses. The P Bus.
  • Page 26 “Build Your Echo Canceller Reference” on page 16. Remember that each micro- phone needs to have an echo canceller reference. If all microphones are in the same Reference EF2211/EF2210 Reference Manual ORTEX In a system with multiple devices, if all devices need the The W, X, Y, and Z busses on the EF Bus contain NOM information.

  • Page 27: Presets

    Input Filters and Output Filters, please refer to the Conference Composer User Guide. © Polycom, Inc. to the User Preset you have saved to. The OWER RESET determines how the unit is configured upon power up. RESET accordingly. OWER RESET EATURES ORTEX EF B RESETS EF2211/EF2210 Reference Manual...

  • Page 28: Lcd Menu Structure

    Table 2: Summary of button functions on the EF2211/EF2210. The EF2211/EF2210 has five menu buttons on the front panel for navigation in the menu tree. Press the H of the menu. The E next highest level of menus. To scroll back through menu items at a particular level,...
  • Page 29 While adjusting a parameter, the U button must be held down briefly before the repeat rate increases. © Polycom, Inc. EF2211/EF2210 Reference Manual ORTEX...

  • Page 30: System Menu

    EMORY , and R EF2211/EF2210 configurations. EBOOT Choose the EF2211/EF2210 Preset for power up. This command controls whether or not status This designates which EF2211/EF2210 device, when Turns error messages On or Off. Locks or unlocks the front panel. When the front panel is...

  • Page 31: Phone Control (Ef2211 Only)

    Ring Tone Enable. Dial Tone Gain DTMF Gain Ring Tone Enable Figure 16. EF2211/ EF2210 Phone Con- trol submenu © Polycom, Inc. Enables or disables auto answer. Enables or disables auto hangup based on Enables or disables auto hangup cased on loop Selects the country where you are using the unit.

  • Page 32: Inputs

    NPUTS The input menu allows the user to adjust functions related to the input signals to the EF2211/EF2210. This menu contains A Inputs 1, T, A, B EFERENCE Inputs (1, T, A and B), so that you first select an input and then select settings for that Acoustic Echo input.

  • Page 33: Outputs

    Mute Output put gain is 0 dB. If you find that you need a positive output gain from the EF2211/ EF2210, first check your input gain to make sure you are getting a good level (around NOM Attenuation 0dB). Keep the output gain at around 0 dBu. Then, for the best gain structure, use On/Off your amplifier to raise the volume in your system.

  • Page 34: Automixer Menu

    Figure 20. Automixer parameters. 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 Time values range from 0 to 5000 msec. The default value is 1000 msec.
  • Page 35 This value is set independently for the automixer. Automixer Reference. When enabled, the echo canceller reference becomes a muted input in the automix so that far end audio coming from the speakers does not gate on local microphones.

  • Page 36: Matrix Menu

    Mute. Gate (In 1) Mute SubMatrix Gain Mute Figure 21. EF2211/ EF2210 Matrix sub- menu EF2211/EF2210 Reference Manual ORTEX contains commands for assigning input signals to output signals with ATRIX Assign input signals to output signals with appropriate Applies gating from Input 1 to an Output.

  • Page 37: Parametric Eq Menu

    Cutoff Frequency: in Hz, between 20 Hz and 20,000 Hz in 1 Hz steps. Cutoff Frequency: in Hz, between 20 Hz and 20,000 Hz in 1 Hz steps. Hz steps Slope between 24 dB/oct and 12 dB/oct Hz steps Slope between 24 dB/oct and 12 dB/oct ORTEX LCD M TRUCTURE EF2211/EF2210 Reference Manual...

  • Page 38: Presets

    Presets Delete. 0-15) cannot be deleted. Restore Save Presets 16-47 Delete Presets 16-47 Figure 23. EF2211/ EF2210 Presets sub- menu ACROS Run Macro (0-255). Macros Run Macro (0-255) Figure 24. EF2211/ EF2210 Macros sub- menu EF2211/EF2210 Reference Manual ORTEX Restores the selected preset.

  • Page 39: Troubleshooting

    ANCELLER EFERENCE Room Audio If you hear the local room’s audio from the loudspeakers and it sounds choppy, you Sounds Choppy may have included the room’s microphones in the echo canceller reference. The echo canceller reference should NOT include the local room’s microphones -- it should only contain the remote end’s audio and program audio.
  • Page 40 EF2211/EF2210. If you hear residual echo, one of the following conditions may be causing the problem. Reverberation vs. Do not confuse the residual echo of remote speech with the reverberation of local Acoustic Echo speech. Reverberation of local speech is caused when the speech signal arrives at the microphone via several paths (the direct path and multiple reflections from surfaces in the room).
  • Page 41 This may be explained as follows. If the reference signal is too low coming into the EF2211/EF2210, i.e. the codec audio signal is too low, the room audio amplifier is usually used to compensate and bring the room audio to an acceptable level.
  • Page 42 Run the built-in EF2211/EF2210 Room Gain test to verify that you do not have room gain problems (See “Verify Room Gain” on page 12).
  • Page 43 Amplification noise level in the room. Because this noise is uncorrelated with the echoes within the room, the EF2211/EF2210’s ability to adapt and cancel echoes will be less than opti- mal. A second effect of insufficient microphone gain is that the power of the microphone input signal may be substantially lower than that of the remote input signal.

  • Page 44: Contacting Technical Support

    If you overdrive the loudspeaker or insert a dynamics processor before the echo can- celler, the acoustic reflections picked up by the microphone do not match the signal fed to the loudspeaker. They are distorted copies of this signal. The EF2211/EF2210 cannot effectively cancel this distorted signal.

  • Page 45: Technical Specifications

    10 W, 4-16 Ohms 20 Hz to 22 kHz 270 ms > 65 dB 40 dB/second 32 ms > 65 dB 40 dB/second 0 dB to 15 dB, software selectable Contact closure 5V, 20 mA each ORTEX ECHNICAL PECIFICATIONS EF2211/EF2210 Reference Manual...

  • Page 46: Compliance

    OMPLIANCE The Vortex EF2211/EF2210 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 two conditions: This device may not cause harmful interference, and This device must accept any interference received, including interference that may cause undesired operation.
  • Page 47 This precaution may be particularly important in rural areas. Caution: Users should not attempt to make such connections themselves, but should contact the appropriate electric inspection authority, or electrician, as appropriate. © Polycom, Inc. ECHNICAL EF2211/EF2210 Reference Manual ORTEX PECIFICATIONS...
  • Page 48 The term “IC:” before the certification/registration number only signifies that the Industry Canada technical specifications were met. CE Mark LVD and The EF2210 has been marked with the CE mark. This mark indicates compliance EMC Directive with EEC Directives 89/336/EEC and 73/23/EEC. A full copy of the Declaration of Conformity can be obtained from Polycom Ltd, 270 Bath Road, Slough, Berkshire, SL1 4DX, UK.
  • Page 49 ECHNICAL PECIFICATIONS Con la presente Polycom Ltd. dichiara che il EF2211 soddisfa i requisiti essenziali e le altre disposizioni pertinenti della direttiva 1999/5/CE. Verklaring van overeenstemming: Hierbij verklaart Polycom Ltd. dat diens EF2211 voldoet aan de basisvereisten en andere relevante voorwaarden van EG-richtlijn 1999/5/EG.
  • Page 50 L’Installation doit être exécutée conformément à tous les règlements nationaux appli- cable au filage électrique. Plug acts as Disconnect Device* The socket outlet to which this apparatus is connected must be installed near the equipment and must always be readily accessible EF2211/EF2210 Reference Manual Technical Support: 800.932.2774 ORTEX...

  • Page 51: Conference System Design

    Signal to Noise Ratio (SNR) in your system include placing microphones closer to the talkers, using electronic noise cancellation, and applying acoustical treatments. The EF2211/EF2210 is a great way to reduce noise in your system and improve the SNR. Polycom’s patent pending noise cancellation algorithm, included in the EF2211/ EF2210, removes up to 10 dB of ambient background noise and improves perceived quality as well as intelligibility.

  • Page 52: Ef2211/Ef2210 Block Diagram

    EF2211/EF2210 B EF2211 Figure 28. Inside the EF2211 EF2211/EF2210 Reference Manual ORTEX EF2211/EF2210 B LOCK IAGRAM LOCK IAGRAM Technical Support: 800.932.2774...
  • Page 53 EF2210 Amplifier Output Phantom Mic/Line EN (Echo Canceller, Noise Canceller) Echo Noise Canceller Canceller R1, R2, Bus Figure 29. Inside the EF2210 © Polycom, Inc. Line Line Line Matrixing Level Level Level adjust adjust adjust Parameters ORTEX EF2211/EF2210 B LOCK...

  • Page 54: Connector Pinouts

    The RS-232 port is wired as DCE. It accepts a male DB-9 connector. Only pins 2, 3, and 5 are required by the EF2211/EF2210 but pins 7 and 8 are sup- ported. Connect pins straight through (do not use null modem).
  • Page 55 Power Supply Input The power supply input accepts a 5-pin DIN male connector. Only use the power supply provided by Polycom. Use of other power supplies will void the warranty. 1 Ground; 2 Ground; 3 +5Vdc @ 3 A; 4 -15Vdc @ 0.3 A;...

  • Page 56: Connecting Unbalanced Rca To Balanced Terminal Block

    Caution! Do NOT connect the shield at both ends. Caution! On the EF2211/EF2210, the terminal block pin 3 is connected to chassis ground. Under no cir- cumstances should pin 3 be connected to pin 1 or to pin 2. Doing so will add noise to the audio signal.

  • Page 57: Additional Notes

    DDITIONAL OTES Caution! Failure to use all four screws to attach the EF2211/ EF2210 to the rack may result in uneven loading and cause a safety hazard. Caution! Ensure that the power supply is securely located such that it cannot become dislodged and fall. Such a fall could cause personal injury or equipment failure.

  • Page 58: Warranty Information

    Two years. What we will do If your Vortex EF2211/EF2210 product is defective and returned within two years of the date of purchase, we will repair or, at our option, replace it at no charge to you. If we repair your Vortex product, we may use new or reconditioned replacement parts.
  • Page 59 Vortex product and for other repair informa- tion, including charges. Polycom, at its sole discretion, may replace rather than repair your Vortex product with a new or reconditioned one of the same or similar design.

  • Page 60: Definition Of Terms

    Echo Canceller An echo canceller estimates the echo in an audio signal by using a reference and pre- forms processing to eliminate the echo from the signal.
  • Page 61 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 Vortex devices. Equalization Equalization is the process of adjusting frequency characteristics of an audio signal.
  • Page 62 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. EF2211/EF2210 Reference Manual Technical Support: 800.932.2774 ORTEX...

  • Page 63: Index

    Device ID ...8, 10 Digital Bus ...23, 59 Echo Cancellation ...30 EF Bus ...4, 5, 8, 9, 16, 17, 19, ...21, 22, 23, 24, 43, 52, ...59 EF Bus Reference ...24, 28 Equalization ...59 © Polycom, Inc. EF2211/EF2210 Reference Manual ORTEX NDEX...
  • Page 64 Non-volatile Memory Lock ...28 Outputs ...31 P Bus ...8, 16, 23 Parallel Remote Control ...5 Phantom Power ...14, 30, 43 Phone ...5, 8, 16, 17, 23, 43, 59 Power Amplifier ...5, 43 EF2211/EF2210 Reference Manual ORTEX Technical Support: 800.932.2774 NDEX...
  • Page 65 RS-232, Serial Remote Control ...4, 5, 8, 14, 23, 27, 30, ...43, 52 Submatrix ...21, 24, 34 Technical Support ...42 Terminal Block Connectors ...4, 8, 53 Terminating the EF Bus, Terminators ...9, 54 Video Codec ...17, 22 © Polycom, Inc. EF2211/EF2210 Reference Manual ORTEX NDEX...
  • Page 66 Technical Support: (800) 932-2774 vortex@polycom.com ® ® Polycom , Vortex , and the Polycom logo are registered trademarks of Polycom, Inc. in the United States and various countries. Copyright © 2003 Polycom, Inc. All rights reserved. P/N 1725-80103-001 Rev A *1725-80103-001-A*...

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