User manual POLYCOM EF2211

Vortex EF2211/EF2210 Reference Manual VORTEX EF2211/EF2210 REFERENCE MANUAL Introduction....................................................................................................2 Features and Benefits ............................................................................................. 3 Pre-Installation...............................................................................................4 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............................................................................... 11 Integrating the Unit Into Your System ..........................................................14 Input Settings .......................................................................................................... 14 Calibration.............................................................................................................. 14 Set up the Phone Interface (EF2211 Only)............................................................. 16 Build Your Echo Canceller Reference.................................................................... 16 Echo Canceller Reference for Multiple Vortex Devices......................................... 17 Configure the Automatic Microphone Mixer.......................................................... 18 Automixer Settings for Multiple Vortex Devices .................................................... 20 Configure the Matrix Mixer.................................................................................... 21 Building Your System with Multiple Vortex Devices.............................................. 21 The EF Bus ....................................................................................................23 Presets..................................................................................................................... 25 Other EF2211/EF2210 Features............................................................................ 25 LCD Menu Structure .....................................................................................26 System Menu ........................................................................................................... 28 Phone Control (EF2211 Only) ............................................................................... 29 Inputs ...................................................................................................................... 30 Outputs.................................................................................................................... 31 Automixer Menu...................................................................................................... 32 Matrix Menu ........................................................................................................... 34 Parametric EQ Menu.............................................................................................. 35 Presets..................................................................................................................... 36 Macros .................................................................................................................... 36 Troubleshooting .............................................................................................37 Automatic Microphone Mixer................................................................................. 37 Matrix Mixer........................................................................................................... 37 Echo Canceller Reference ...................................................................................... 37 Residual Echo ......................................................................................................... 37 Contacting Technical Support ................................................................................ 42 Technical Specifications ................................................................................43 Compliance ............................................................................................................. 44 Conference System Design ............................................................................49 EF2211/EF2210 Block Diagram ...................................................................50 Connector Pinouts..........................................................................................52 Connecting Unbalanced RCA to Balanced Terminal Block................................... 54 Making an EF Bus Terminator ............................................................................... 54 Additional Notes ..................................................................................................... 55 Warranty Information ....................................................................................56 Definition of Terms .......................................................................................58 Index ..............................................................................................................61 Polycom, Inc., Copyright 2003 1 Technical Support: 800.932.2774 INTRODUCTION INTRODUCTION Welcome How to Use This Manual Congratulations on your purchase of the Vortex EF2211/EF2210! This is a reference manual for your EF2211/EF2210. Information specific to the 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. This manual is structured to provide the information you need quickly and conveniently. The following is an overview of each section: · · · · Introduction Pre-Installation includes information about the contents of the box, tools needed for installation and front and rear panel descriptions. Installation covers connections of inputs/outputs and calibration of inputs of the EF2211/EF2210. Integrating the Unit Into Your System describes adjustments to take into consideration when integrating the EF2211/EF2210 with surrounding equipment in your system. LCD Menu Structure describes an overview of the LCD menu structure and also gives a system overview of features and options available. Troubleshooting helps to debug problems with installation. Technical Specifications provides the technical specifications of the EF2211/ EF2210. Conference System Design gives suggestions on topics to consider when designing your system. EF2211/EF2210 Block Diagram shows the inside of the EF2211/EF2210. Connector Pinouts shows pinout diagrams for EF2211/EF2210 input and output connectors. Warranty Information Definition of Terms explains terms used in this manual, as well as terms used in our technology of echo cancellation, noise cancellation, and audio conferencing. · · · · · · · · About the EF2211/EF2210 The EF2211/EF2210 features industry-leading acoustic echo cancellation technology, which keeps received audio from being re-transmitted to its original location, and patented noise cancellation algorithms which dramatically reduce ambient noise in the audio sent to other sites without affecting speech quality. Also included in the microphone input is a neural network Automatic Gain Control that reacts only to valid speech patterns to bring voices within desired levels. AGC controls are user-adjustable, as are settings for the 5-band parametric EQ offered on all input and output channels in the EF2211/EF2210. The EF2211 includes a telephone interface with ambient noise cancellation, which can dramatically improve the receive audio quality on phone calls. The EF2211/EF2210 may be programmed directly from the front panel, or through our Conference Composer software (included), which programs the unit via RS-232. The unit may additinally be controlled via external RS-232 devices. VORTEX EF2211/EF2210 Reference Manual 2 Technical Support: 800.932.2774 INTRODUCTION Product Registration Please take a moment to fill out and return your registration card. This information will help us to provide you with better customer support and will allow us to notify you with updated product features and software. FEATURES AND BENEFITS · · · · · · · · · · 1 mic/line input, 2 line inputs, 3 line outputs Includes a telephone hybrid, with noise cancellation, for adding phone calls to conferences Country specific telephone configuration settting allow use almost anywhere 10 Watt power amplifier for driving audio in the room Industry-leading acoustic echo and noise cancellaltion ensure the highest possible audio quality between sites Includes matrix mixer with arbitrary cross point gain values Ambient noise cancellation on mic/line input and telephone receive audio 5-band parametric EQ on all inputs and outputs Up to 32 user configurable presets, 16 factory presets, and 256 macros for flexible control May be linked with other Vortex devices via the EF Bus including EF2280, EF2241, EF2211, EF2210, EF2201, or other Polycom products © Polycom, Inc. 3 VORTEX EF2211/EF2210 Reference Manual PRE-INSTALLATION PRE-INSTALLATION What's Included The Vortex EF2211/EF2210 product package includes the following items: · · · · · · · · · · Vortex EF2211/EF2210 Reference Manual Vortex EF2211/EF2210 External power supply Cat 5 cable for EF Bus Telephone cable (NOT included with the EF2210) Rack mount screws (4) 3.5 mm terminal block connectors (6) Cable clamp and screw CDROM containing other manuals and Conference Composer software Product Registration Card Vortex® EF2210 OR EF2211 DOWN UP Vortex® EF2211 ORTEX HOME METER PHONE CONNECT -20 -12 -7 -3 0 3 9 20 dB Terminal Block Connectors (6) 1-Cat 5 cable for EF Bus External Power Supply Rackmount Screws (4) x x Cable Clamp and screw Vortex® EF2211/EF2210 Reference Manual x x CD with control software and manuals Vortex EF2211/EF2210 Reference Manual 1-Telephone cable Figure 1. What's Included with your Vortex EF2211/EF2210. What's Not Included The following equipment is not included with the EF2211/EF2210 product package, but may be necessary to create a completely functional system: · · · · · Microphones Loudspeakers Audio cables Videoconferencing codec or other four-wire interface (optional) RS-232 remote control device (optional) Tools Needed for Installation · · Screwdriver to mount the EF2211/EF2210 in your rack. 3.5 mm terminal block connector screwdriver VORTEX EF2211/EF2210 Reference Manual 4 Technical Support: 800.932.2774 PRE-INSTALLATION EF2211/EF2210 FRONT AND REAR PANELS EF2211 DOWN UP ORTEX HOME METER PHONE CONNECT -20 -12 -7 -3 0 3 9 20 dB 1 2 3 4 5 6 7 8* 9 INPUT REMOTE CONTROL OUTPUT EF BUS IN RS-232 PIN 2: TXD, PIN 3: RXD, PIN 5: GROUND, PIN 7: CTS, PIN 8: RTS OUTPUTS 1 A B +5, +/-15 VDC SPEAKER INPUTS A PHONE EF BUS OUT RS-232 LINE VORTEX EF2211 1 B 10* 11* 12 13 14 15 16 17* 19 18 Figure 2. EF2211/EF2210 Front and Rear Panels 1. 2. 3. 4. 5. 6. 7. 8. LCD DISPLAY. Displays menu instructions for configuration and operation of the EF2211/EF2210. DOWN BUTTON. Scrolls backward through menu items at a particular level or decreases the value of a parameter. UP BUTTON. Scrolls forward through menu items at a particular level or increases the value of a parameter. ENTER. Enters the menu and allows you to select and change parameter values. ESC. Returns to the next highest level of menus. HOME. Returns to the top of the menu structure. LEVEL INDICATOR. Indicates the level of the selected channel or parameter. PHONE CONNECT. Takes the phone line on or off hook. If you have an analog handset connected to the PHONE jack on the back panel, pushing this button will disable the PHONE jack while enabling the LINE jack (see Item 17). * This feature is not available on the EF2210. MIC ACTIVITY LED. Indicates gating activity on the mic/line channel input. INPUT PARALLEL PORT. Parallel logic input. * This feature is not available on the EF2210. OUTPUT PARALLEL PORT. Parallel logic output. * This feature is not available on the EF2210. EF BUS IN. Connects to EF BUS OUT of another Vortex device. EF BUS OUT. Connects to the EF BUS IN of another Vortex device. RS-232 SERIAL PORT. Connect this to an optional RS-232 remote control device, such as a touch panel or personal computer COM port. POWER SUPPLY INPUT. Connects to the external power supply provided with the EF2211/EF2210. POWER AMPLIFIER OUTPUT. Drives up to 10 W into 4-16 Ohm speakers. PHONE/LINE JACKS. Use the PHONE jack for connecting an analog handset to the system. Use the LINE jack for connecting to an analog telephone line. * This feature is not available on the EF2210. INPUTS. Includes inputs for a microphone or line level input, remote end audio (line level), and program audio (line level). LINE OUTPUTS. Line level outputs for an amp, remote audio, and record audio. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. © Polycom, Inc. 5 VORTEX EF2211/EF2210 Reference Manual INSTALLATION INSTALLATION 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 CAUTION-To reduce the risk of fire, use only No. 26 AWG or larger telecommunication line cord. MOUNTING THE EF2211/EF2210 The EF2211/EF2210 can be mounted in a rack enclosure using four large screws (1032x1/2") included with the unit. One EF2211/EF2210 fits in a single rack space. Recommendation For Easy Access Instructions for Securing Power Supply to Back of EF2211/EF2210 While not required, leave a single rack space in between the EF2211/EF2210 and other units in your rack. This gives you easier access to the back panel. · · · · · Locate the cable clamp on the back panel of the EF2211/EF2210 above the power connector. Remove the screw and thread the power cord through the cable clamp. Attach the cable clamp to the back panel of the EF2211/EF2210 and tighten the screw. Align the clamp so that the power cable does not interfere with the connectors on the EF2211/EF2210 back panel. Plug in the power supply. We recommend that you also Ty-wrap the power supply to the rack. The purpose of securing the power supply to the back panel is so that if the power supply were to drop, it would pull where the cord is attached with the cable clamp and not pull the plug out of the EF2211/EF2210. Caution! Do not use any other power supply other than the one provided with this unit. CONNECTING THE EF2211/EF2210 TO OTHER EQUIPMENT Grounding The EF2211/EF2210 has 1 mic/line input plus 2 line level inputs and 3 line level outputs. 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. VORTEX EF2211/EF2210 Reference Manual 6 Technical Support: 800.932.2774 INSTALLATION Typical EF2211/ EF2210 Connections The EF2211/EF2210 will typically be connected to other equipment in a single room setup as shown below in Figure 3 and Figure 4. Mic In Far In Prgm In Amp Out Far Out Rec Out Polycom Video CODEC Line In Line Out Vortex® EF2211 Spk Out Phone Line EFBus In EFBus Out PSTN 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. PSTN Vortex® EF2211 INPUT REMOTE CONTROL OUTPUT EF BUS OUT RS-232 EF BUS IN RS-232 PIN 2: TXD, PIN 3: RXD, PIN 5: GROUND, PIN 7: CTS, PIN 8: RTS OUTPUTS 1 A B +5, +/-15 VDC SPEAKER INPUTS A PHONE LINE VORTEX EF2211 1 B Polycom Video Codec, 4-wire Connection POLYCOM CODEC TX RX Figure 4. Typical EF2211/EF2210 connections. NOTE: The phone interface and parallel logic ports are not available on the EF2210 The following steps are typically used to set up the EF2211/EF2210: · Connect a microphone or line level microphone mix into the MIC INPUT. Each © Polycom, Inc. 7 VORTEX EF2211/EF2210 Reference Manual INSTALLATION input accepts 3.5 mm terminal block connectors. See "Connector Pinouts" on page 52 for pinouts of the terminal block connectors. Connect SPEAKER OUTPUT to loudspeaker or AMP OUTPUT to the room amplifier. If RS-232 remote control is desired, connect the RS-232 REMOTE CONTROL port of the EF2211/EF2210 to the remote control device, such as an RS-232 interface to a touch panel or a COM port on a personal computer. On the EF2211, connect the LINE RJ11 jack to an analog telephone line. On the EF2211, connect the PHONE RJ11 jack to an analog telephone set (optional). Connect the external power supply to the POWER SUPPLY INPUT jack of the EF2211/EF2210. Set the country code on the EF2211. By default the phone interface will be disabled until you select a country code for the telephony interface. This can either be done with the front panel LCD menu, or the RS-232 interface. The country code only needs to be selected the first time or when the country of the installation is changed. · · · · · · DEVICE IDS ON THE EF BUS When considering which Device IDs can be used for which Vortex device, decide how many devices have the ability to transmit on the 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. Up to 8 devices can transmit on the W, X, Y, and Z busses. Similarly, up to 8 devices can transmit on the P bus. Note that the EF2211 counts as one of both types. All devices that can transmit on the same bus output(s) must have unique device IDs. If the device IDs of linked Vortex devices are the same, the front panel LCD screen will display "EFBus Error: Dev. ID Conflict". CONNECTING MULTIPLE VORTEX DEVICES Up to 8 echo cancellation Vortex devices in combination can be linked together at one time and up to 8 phone interface Vortex devices in combination can be linked together at one time (See Device IDs on the EF Bus above). Keep in mind that there are units that are considered one of both types (such as the EF2241 or EF2211). Each unit in the chain must have a unique Device ID. Use the EF Bus to link multiple Vortex devices together. The following steps should be followed to connect the EF Bus: 1. 2. 3. 4. Set a unique Device ID for each Vortex device. The Device IDs range from 00 to 07. Power off all units. Connect the RS-232 remote control device to any Vortex device in the chain. Connect the provided Cat-5 cable between the EF BUS OUT of the first device, and the EF BUS IN of the second device. Note. The EF Bus must be connected so that the EF Bus In of one box is connected to the EF Bus Out of another. Connecting the EF Bus In to another EF Bus In (or Out to Out) will not work. VORTEX EF2211/EF2210 Reference Manual 8 Technical Support: 800.932.2774 INSTALLATION 5. 6. Connect another Cat-5 cable between the EF BUS OUT of the second device and the EF BUS IN of the third device, and so on. Power on all units at the same time. Terminating the EF2211/EF2210 The EF2211/EF2210 is self-terminating so its EF Bus does NOT need to be terminated. However, if you are linking the EF2211/EF2210 to EF2280s, terminate the EF Bus link. EF Bus Terminator Vortex EF2280 Cat-5 cable Vortex EF2280 C a t - 5 c a b l e Vortex EF2210 No Terminator Needed Figure 5. Only the EF2280 needs to be terminated when linked together with EF2211/EF2210s. FACTORY DEFAULT SETTINGS (PRESET 0) 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 levels, you can start with a FACTORY PRESET (Presets 0-15), change it to match your environment and then save it within the EF2211/EF2210 as a USER PRESET (Presets 16-47). Once you've saved a USER PRESET, set the POWER ON PRESET to that USER © Polycom, Inc. 9 VORTEX EF2211/EF2210 Reference Manual INSTALLATION PRESET (or whichever preset you want to come up after power up). The unit will need to be configured for your system. PROGRAM PARAMETERS SYSTEM PARAMETERS Preset Device ID Baud Rate Flow Control INPUT CHANNELS Acoustic Echo Cancellation (Input 1) Automatic Gain Control (AGC), Input 1 AGC Rate (Input 1) AGC Maximum (Input 1) AGC Minimum (Input 1) Echo Canceller Reference (Input 1) Filtering Input Gains On On 1 dB/s 3 dB -3 dB Ref1 Off Mic Mode + 15 dB = 48 dB for Input 1 0 dB for Inputs A-B Off On 10 dB On 0 0 9600 Off FACTORY DEFAULT PRESET VALUE Mute Noise Cancellation (Input 1) Noise Cancellation Level (Input 1) Phantom Power (Input 1) OUTPUT CHANNELS Mute Output Gain PHONE CONTROL (EF2211 ONLY) Auto Answer Auto Hangup Call Progress Auto Hangup Loop Drop Dial Tone Gain DTMF Gain Ring Tone Enable Off 0 dB Off Off Off 0 dB 0 dB On VORTEX EF2211/EF2210 Reference Manual 10 Technical Support: 800.932.2774 INSTALLATION PROGRAM PARAMETERS Entry and Exit Tone Enable PHONE INPUT (INPUT T), EF2211 ONLY Automatic Gain Control (AGC) AGC Maximum AGC Minimum AGC Rate Phone Input Gain Mute Noise Cancellation Noise Cancellation Level Line Echo Cancellation Dynamics Processing Filtering PHONE OUTPUT (OUTPUT T), EF2211 ONLY Mute Phone Output Gain Dynamics Processing Filtering Off 0 dB On Off On 12 dB -6 dB 1 dB/s 0 dB Off On 5 dB On On Off FACTORY DEFAULT PRESET VALUE On Presets and Multiple Vortex Devices PRESET 0 is preconfigured for a system with multiple Vortex devices. In Preset 0, the microphone is bussed out to other units on the W Bus. Microphones are also input into each device on the W Bus (INPUT WM0 in the Matrix). If you have multiple devices in your system, save settings to a user preset (Presets 1647) on each device. Saving a preset will only save the preset on that particular unit so save the preset to each Vortex device. Also, remember to set the POWER ON PRESET on each device to the User Preset that you have saved your settings to otherwise the device will revert back to Preset 0 (factory default) if power is lost. CHECK SURROUNDING EQUIPMENT Now that the physical connections to the EF2211/EF2210 are set up, it may be necessary 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 system: Pick a Standard Signal Level © Polycom, Inc. A standard nominal signal level should be used throughout the audio system. Any equipment that does not operate at this standard level should be compensated for as 11 VORTEX EF2211/EF2210 Reference Manual INSTALLATION close to the piece of equipment as possible. A 0 dB nominal level is a good standard signal level. For example, a consumer VCR will probably generate a -8 dBu level. As soon as the VCR signal arrives at an input with some gain control, the input gain should be adjusted so that you get a 0 dB level, i.e. adding 8 dB of gain. Check Levels to the Codec Configure the matrix mixer output to the codec input. The output gain of the matrix mixer should be set to match the nominal input level of the codec. For example, if the codec accepts -10 dBV (-8 dBu) inputs, 8 dB of attenuation should be applied at the matrix mixer output to the codec. 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 of gain should be applied on the matrix mixer input. This will bring the codec level up to 0 dBu inside the matrix. Verify Room Gain After adjusting the loudspeaker level, verify the room gain in your system using the ROOM GAIN meter on the DIAGNOSTICS page of Conference Composer. Room gain refers to the relative level of the audio going to your amplifier (remote end speech or telephone speech) and the level of this audio being picked up by the microphone. The Room Gain measurement is only accurate when just the remote talkers are speaking. If local talkers are speaking too, the room gain meters are not accurate. See Figure 6 below. 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: 1. 2. Decrease the Input Gain of the microphone. Decrease the Output Gain of the microphone. VORTEX EF2211/EF2210 Reference Manual 12 Technical Support: 800.932.2774 INSTALLATION 3. OR adjust the placement of the microphone relative to the loudspeaker. Room Gain Meter Read Room Gain from here Figure 6. Room Gain Meter on the Diagnostics page of the Conference Composer control software. Configure Program Audio Sources Set the gain on the matrix mixer input from the program audio source so that program 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 site. © Polycom, Inc. 13 VORTEX EF2211/EF2210 Reference Manual INTEGRATING THE UNIT INTO YOUR SYSTEM INTEGRATING THE UNIT INTO YOUR SYSTEM Operating the EF2211/EF2210 The EF2211/EF2210 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 EF2211/ EF2210 Programming Guide, which includes programming tips as well as the EF2211/EF2210 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 EF2211/EF2210 with a PC, or refer to the Applications Guide for different configurations that are already programmed into factory presets. INPUT SETTINGS Set Input 1 for Mic or Line Level Configure Input 1 for mic or line level using the LCD menu (See "Level (Input 1)" on page 30) or Conference Composer Control Software (See the Conference Composer User Guide). Setting the input to mic level adds 33 dB of gain to the input stage. If you are connecting one microphone to the device, choose Mic level (with the default input gain value of 15 dB, a total of 48 dB of gain is applied to the input). If you are connecting an external automatix microphone mixer to the input, choose Line level. Select Phantom Power for Input 1 Turn phantom power On or Off for Input 1 using the LCD menu (See "Phantom Power (Input 1)" on page 30) or Conference Composer Control Software (See the Conference Composer User Guide). Phantom power should be turned On for condenser and electret microphones. Set Levels on Line Input Channels Set the line input channel gains (Channels A-B) to match the nominal level of the incoming equipment. The line inputs have a maximum nominal level of 0 dBu. If your incoming line level inputs have a higher nominal level than 0 dBu you will want to use a pad to remove the level. If you are connecting from equipment that has RCA plugs, you will most likely need 8 dB of gain on the Input and -8 dB of gain on the Output. CALIBRATION When using the factory default, Preset 0, the following calibration can be used. Set Mic/Line Input Gain In Preset 0, Automatic Gain Control (AGC) is On and the microphone gain on Input 1 is set to 15 dB. The AGC will compensate for the microphone gain. If you are using a ceiling microphone, set the microphone gain to 28 dB. VORTEX EF2211/EF2210 Reference Manual 14 Technical Support: 800.932.2774 INTEGRATING THE UNIT INTO YOUR SYSTEM 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 7 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 channel'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, 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. AGC Level Meter Read AGC level Adjust Input Gain here Figure 7. AGC Meter on the Diagnostics page of the Conference Composer software. The gain adjustment is the same gain control on the Mic/Line Inputs page in Conference Composer. IF THE AGC METER SHOWS... positive gain negative gain ADJUST THE INPUT GAIN IN THIS WAY. Increase gain by the level shown in the box. Decrease gain by the level shown in the box. Table 1: How to set the Input Gain using the AGC meter on the Conference Composer Diagnostics page. © Polycom, Inc. 15 VORTEX EF2211/EF2210 Reference Manual INTEGRATING THE UNIT INTO YOUR SYSTEM an average level of 0 dB You've set the Input Gain to a good level! Table 1: How to set the Input Gain using the AGC meter on the Conference Composer Diagnostics page. Customize Setting for Your Particular Application The following sections will describe customizing parameters on the EF2211/EF2210 for your particular application if you are not using Preset 0. SET UP THE PHONE INTERFACE (EF2211 ONLY) The echo canceller reference of the EF2211 is by default set up with the phone input already assigned to it. By default the phone interface will be disabled until you select a country code for the telephony interface. This can either be done with the front panel LCD menu, or the RS-232 interface. The country code only needs to be selected the first time or when the country of the installation is changed. Send audio from the phone to the outputs on the same device by unmuting the crosspoint 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. BUILD YOUR ECHO CANCELLER REFERENCE The acoustic echo canceller (AEC) reference should generally contain exactly the same audio signals as what is coming out of your loudspeaker(s) minus any local microphone(s) that might be used for sound reinforcement, since the signal output from the loudspeaker is what is then picked up by the room's microphones causing acoustic echo. Note that this statement is a general statement. Conditions for this being true follow: If your system does NOT have sound reinforcement, If your system has sound reinforcement, · · The AEC reference should contain exactly the same audio as the loudspeaker output: all far end audio, audio from the phone add, program audio, etc. If you are using crosspoint gains in the loudspeaker mix, apply the same gains to the signals in your reference. · Do NOT mix your room microphones into the reference, but include all other audio (program audio, remote audio, phone audio, etc.). VORTEX EF2211/EF2210 Reference Manual 16 Technical Support: 800.932.2774 INTEGRATING THE UNIT INTO YOUR SYSTEM ECHO CANCELLER REFERENCE FOR MULTIPLE VORTEX DEVICES In a system with multiple devices, we recommend that one device be designated as the unit that provides the EF bus reference for the acoustic echo cancellers. This unit takes its reference signals and places it on the EF bus. All other units that are linked together may use the EF bus reference as the reference for their echo canceller, or they can use their own internal reference(s). The reference may include a mix of any input, with crosspoint gains, including W, X, Y, and Z busses. Set the EF Bus Reference in the System Menu of the LCD Menu (See "EF Bus Reference" on page 28). Setting up the Bus Reference If all far end audio and program audio sources are on the same Vortex device. 1. 2. Assign far end audio and program audio sources to Reference 1 on the originating device. On the EF Bus page in Conference Composer for the originating device, set the Exported Signals to REFERENCE 1. Only one device can put an echo canceller reference on the EF Bus as the Bus Reference. On all linked devices, set the echo canceller reference to BUS. 3. 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. Conference Composer will not allow more than one device assign their echo canceller reference as the Bus Reference. Notice that the phone audio and VS4000 inputs are both assigned to Reference 1 on the originating EF2280. The Matrix for any linked devices is shown in Figure 10. Figure 8. Matrix page of origin EF2280 (ID 00) Figure 9. EF Bus page of origin EF2280 (ID 00) © Polycom, Inc. 17 VORTEX EF2211/EF2210 Reference Manual INTEGRATING THE UNIT INTO YOUR SYSTEM Figure 10. Matrix page of linked devices If far end audio and program audio sources are on several Vortex devices. 1. 2. 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 Z bus. Assign an echo canceller reference on each device that will include all far end audio and program audio sources. CONFIGURE THE AUTOMATIC MICROPHONE MIXER 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. If you have a PC, use the Conference Composer software (See the Conference Composer User Guide) to set the automixer parameters. If you would like to set automixer parameters using the LCD menus, see "Automixer Menu" on page 32 for instructions on setting automixer parameters. Automixer Parameters The following parameters configure how the EF2211/EF2210 automatic microphone mixer operates. Parameters include the following: Decay Time, Hold Time, Camera Gating Threshold, Chairman Mode, Chairman Mic, Last Mic On Mode, Last Mic Number, Local Max NOM, Global Max NOM, Automixer Reference, Reference VORTEX EF2211/EF2210 Reference Manual 18 Technical Support: 800.932.2774 INTEGRATING THE UNIT INTO YOUR SYSTEM Bias, Off Attenuation, Threshold Type, Gating Mode, Adaptive Threshold, Manual Threshold, and Gate Priority. Signal Level Channel turns on when signal level is above Adaptive Threshold DECAY TIME Channel ON ADAPTIVE THRESHOLD Channel OFF Ambient Level Microphone Audio HOLD TIME OFF ATTENUATION Time 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. The default value is 1000 msec. Hold Time. This is the amount of time the microphone stays On after the energy in the channel drops below the gating threshold. The default value is 500 msec. The range is 1 to 5000 msec. Microphone channels gating On and Off too frequently during short pauses in speech might be the result of setting the Hold Time too low while too many microphones gating on at the same time may be the result of Hold Time values that are too high. Camera Gating Threshold. Specifies the hold time for camera gating information. Mixer Settings. Bus Mixer. This command is used to assign the automixer to one of the EF Bus automixer groups. Setting the Bus Mixer to the same number as the automixer on another Vortex device will allow the devices to be one large automixer. Setting Bus Mixer to 0 means that the automixer is not grouped on the EF Bus and the automixers operate independently. Chairman Mode. Enables or disables Chairman Mode for the automixer. Chairman Mic. Sets the Chairman Microphone for the automixer. Last Mic On Mode. Sets "Last Mic On" mode for the automixer. Last Mic Number. Sets the microphone number that will remain on when "Last Mic On" mode is set to manual. Setting this value to 0 will cause the automixer to leave the last open microphone on. The last microphone number is specified for the automixer, but is only used in manual "Last Mic On" mode. Local Max NOM. Sets the maximum number of open microphones (NOM) limit for the automixer. This NOM limit is a "local" limit, meaning that this limit applies only to the specific Vortex device that it is set on. Global Max NOM. Sets the global maximum number of open microphones (NOM) limit for each linked automixer. The maximum value for this command is 64. This NOM limit is a "global" limit, meaning that this limit applies to all linked automixers with the same Bus ID. Off Attenuation. Sets the Off Attenuation (in dB) for the automixer. Setting © Polycom, Inc. 19 VORTEX EF2211/EF2210 Reference Manual INTEGRATING THE UNIT INTO YOUR SYSTEM this value to 18 would result in the microphone signals being attenuated by 18 dB when gated off. 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. Reference Bias. Adjusts how much gain is applied to the Automixer Reference signal. The higher the gain, the harder it will for local talkers to gate on a microphone. Channel Settings. Automixer. This allows you to select between no automixer and Mixer 1 for Input 1. Threshold Type. Sets adaptive or manual automatic gating thresholds per input. The default is adaptive. Gating Mode. Sets the automixer gating control mode for the input channel 1. The possible modes are Normal Gating, Microphone Forced On, or Microphone Forced Off. Adpative Threshold. This allows you to determine when to gate a microphone on based on an estimate of the background noise level. The default value is to gate a channel on if it is more than 10 dB louder than the background noise level. Values range from 0 to 100 dB. To set the Adaptive Threshold, scroll through the Adaptive Threshold range and select the desired Adaptive Threshold by pressing ENTER. Manual Threshold. Sets the automixer gating threshold for input channel 1. This value is only used if the input set to Manual Gating via the THRESHOLD TYPE option. 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 to priority 1. If Chairman Mode is enabled, all microphones including ones with priority of 1 will be gated off when the Chairman mic gates on. AUTOMIXER SETTINGS FOR MULTIPLE VORTEX DEVICES When using more than one Vortex device in your room system, you have several possibilities for how you configure the automixer. Each device can operate as one of the following: · · · · One automixer, independent of other devices linked to it Two automixers, independent of other devices linked to it (applies only to Vortex devices with 2 automixers) One large automixer, sharing automixer functions with other devices linked to it Two large automixers, sharing automixer functions with other devices linked to it (applies only to Vortex devices with 2 automixers) Figure 12. Vortex device Automixer Settings in Conference Composer Software VORTEX EF2211/EF2210 Reference Manual 20 Technical Support: 800.932.2774 INTEGRATING Automixer and Bus Mixer Settings THE UNIT INTO YOUR SYSTEM To operate the Vortex device in any of the above possibilites, two global parameters need to be changed: the AUTOMIXER and the BUS MIXER (see Figure 12). The AUTOMIXER parameter chooses which automixer the input channel will be on (this is changed either on the AUTOMIXER page in Conference Composer or on the MATRIX MIXER page). The BUS MIXER parameter is used to assign one of the two internal automixers to one of the EF Bus automixer groups. For example, consider three Vortex devices, each of which has 2 microphones assigned to Automixer 1 and 2 microphones assigned to Automixer 2. Now, if each of these devices sets their Automixer 1 to have Bus ID 5, then the three automixers (one from each device) will work as a single automixer containing 6 (3 x 2) microphones. Setting BUS MIXER to 0 means that the automixer is not grouped on the EF Bus. Operating as an Independent Automixer Operating as One Automixer with Multiple Vortex Devices Default Settings To set the Vortex device to operate as an independent automixer (or two), set the BUS MIXER parameter to 0, or to a number that is different from any other automixer group on the EF Bus. To set the Vortex device to operate as one automixer across several devices, set the BUS MIXER parameter on all devices to the same automixer group. In the default preset (Preset 0), the Bus Mixer for Automixer 1 is set to 1 and the Bus Mixer for Automixer 2 is set to 2. This means that in the default mode, all linked devices will work together as one complete automixer. CONFIGURE THE MATRIX MIXER The matrix mixer allows arbitrary crosspoint gains in 1 dB increments between any input and output signal. If you have a PC, use the Conference Composer software (See the Conference Composer User Guide) to set the matrix parameters. If you would like to set matrix parameters from the LCD menus, see "Matrix Menu" on page 34 for descriptions and instructions on setting matrix mixer parameters. BUILDING YOUR SYSTEM WITH MULTIPLE VORTEX DEVICES The following is a checklist for building a system with mutliple devices: 1. 2. 3. 4. Assign Inputs. Assign Outputs. Configure submatrix (the EF Bus). Configure your echo canceller reference. © Polycom, Inc. 21 VORTEX EF2211/EF2210 Reference Manual INTEGRATING 1. Assign Inputs THE UNIT INTO YOUR SYSTEM Assign each audio source to an input. Remember to include the conferencing equipment 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 submatrix. The bussing gets more complicated if you choose to spread your outputs over several units. 3. Configure the submatrix. To link multiple devices together, use the submatrix on the EF Bus to configure which signals to receive from other devices that have put their signals on the Bus. VORTEX EF2211/EF2210 Reference Manual 22 Technical Support: 800.932.2774 THE EF BUS THE EF BUS 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). It can link up to 8 Vortex devices. The W, X, Y, Z Busses. The W, X, Y, and Z busses include NOM information and can be used for sharing microphone inputs, or for sharing mono or stereo program information. On the EF Bus page in Conference Composer, the inputs coming in to each submatrix labelled WB0, WB1, ... WB7 correspond with the device ID of the bus that is transmitting. The "B" denotes Bus. The submixes themselves, denoted as 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 busses. The P Bus. The P Bus is provided specifically to allow devices to share digital phone audio from the phone hybrid devices (EF2241, EF2201, EF2211). On the EF Bus page in Conference Composer, the inputs coming in to each submatrix labelled PB0, PB1, ... PB7 correspond with the device ID of the bus that is transmitting. The "B" denotes Bus. The submixes themselves, denoted as PM0, PM1, and PM2 are mixes that are input into the main matrix. The "M" denotes Mix. The EF2211 can both transmit and receive signals on the P bus. The EF2210 cannot transmit but can receive signals on the P bus. Crosspoint Mix Minus Bus. Each Vortex device in the system can create up to 5 output mixes, depending on what signals they can transmit, and place them on the bus. Each device also can create three input mixes from each of the input busses of the other devices. The mixes allow crosspoint gains to be adjusted on the signals © Polycom, Inc. 23 VORTEX EF2211/EF2210 Reference Manual THE EF BUS from the other devices. See Figure 13 below. The input mixes become inputs to the main matrix and can be mixed with the other inputs to create output mixes. Figure 13. W, X, Y, and Z submatrices, the P submatrix, and Exported Bus Reference. 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 canceller reference on the EF bus to be used as the EF Bus Reference. All other devices may use the EF bus reference as the reference for their echo cancellers, 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 busses. NOM. The W, X, Y, and Z busses on the EF Bus contain NOM information. See "NOM Active" on page 31 for more information on how NOM attenuation is applied. Note. The EF Bus must be connected so that the EF BUS OUT of one Vortex device is connected to the EF BUS IN of another Vortex device. Connecting EF BUS IN to another EF BUS IN (or EF BUS OUT to EF BUS OUT) will not work. See"Connector Pinouts" on page 52 for pinout of Cat 5 cable. 4. Configure Your Echo Canceller Reference Review what inputs need to be included in your echo canceller reference -- See "Build Your Echo Canceller Reference" on page 16. Remember that each microphone needs to have an echo canceller reference. If all microphones are in the same VORTEX EF2211/EF2210 Reference Manual 24 Technical Support: 800.932.2774 THE EF BUS room and use the same reference, configure the echo canceller reference on one Vortex device and assign it to the EF Bus as the EF Bus Reference. Only one Vortex device out of multiple units linked together can put an echo canceller reference on the EF Bus. For each additional unit, assign the echo canceller reference to use the EF Bus Reference. For systems with more than one room, you may need to use the W, X, Y, or Z subbusses to share the echo canceller reference in your additional rooms if the EF Bus Reference has already been assigned to the EF Bus. PRESETS After configuring your Vortex device, save your settings to a User Preset (PRESETS 16-47). Also, set the POWER ON PRESET to the User Preset you have saved to. The POWER ON PRESET determines how the unit is configured upon power up. If you have multiple Vortex devices in your system, save to a User Preset on each unit and set the POWER ON PRESET accordingly. OTHER EF2211/EF2210 FEATURES For information on Macros, Logic Inputs (EF2211 only), Logic Outputs (EF2211 only), Input Filters and Output Filters, please refer to the Conference Composer User Guide. © Polycom, Inc. 25 VORTEX EF2211/EF2210 Reference Manual LCD MENU STRUCTURE LCD MENU STRUCTURE LCD Menu Tree The EF2211/EF2210 LCD menu structure is made up of nine menu trees: SYSTEM, PHONE CONTROL (EF2211 only), INPUTS, OUTPUTS, AUTOMIXER, MATRIX, PARAMETRIC EQ, PRESETS, and MACROS. Each menu tree is organized by levels and branches into multiple subcategories. The branches end with an adjustable parameter or value. EF2211 System Settings System Power On Preset Acknowledgement Mode Bus Reference Error Messages Front Panel Lock Front Panel Password Device ID Baud Rate Flow Control Meter Non-Volatile Memory Lock Non-Volatile Mem Password Screen Saver Last Restored Preset Software Version Reboot Vortex Phone Control Auto Answer Auto Hangup Call Progress Auto Hangup Loop Drop Country Select Dial Tone Gain DTMF Gain Ring Tone Enable Inputs 1, T, A, B Acoustic Echo Cancellation (In 1) Automatic Gain Control (AGC), In 1, T AGC Maximum (In 1, T) AGC Minimum (In 1, T) Gain Level Mic/Line (In 1) Mute Noise Cancellation (In 1, T) Noise Cancellation Level (In 1, T) Phantom Power (In 1) Reference Assign (In 1) AEC Suppression (In 1) Dynamics Processing (In T) LEC Suppression (In T) Line Echo Cancellation (In T) Outputs Output Gain Mute Output NOM Attenuation On/Off Output Delay Enable Output Delay Dynamics Processing (Out T) Automixer Global Settings Decay Hold Time Camera Gating Threshold Mixer Settings (AM1) Bus ID Chairman Mode Chairman Mic Last Mic On Mode Last Mic Number Local Max NOM Global Max NOM Off Attenuation Automixer Reference Reference Bias Channel Settings (Input 1) Threshold Type Gating Mode Adaptive Threshold Manual Threshold Gate Priority Matrix Main Matrix Gain Gate (In 1) Mute SubMatrix Gain Mute Parametric EQ Input/Output EQ Channel Band Filter Type Frequency Bandwidth Gain Slope Filter Enable Presets Restore Save Presets 16-47 Delete Presets 16-47 Macros Run Macro (0-255) Figure 14. LCD Menu Tree. DOWN Scrolls backward through menu items at particular level or decreases the value of a parameter UP Scrolls forward through menu items at particular level or increases the value of a parameter. ENTER Enters the menu and allows you to select and change parameter values. ESC Returns to the top of the next highest level of menus HOME Returns to the top of the 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 HOME button from anywhere in the menu tree to return to the top of the menu. The ENTER button enters the menu and the ESC button returns to the next highest level of menus. To scroll back through menu items at a particular level, use the DOWN button. To scroll forward through menu items at a particular level, use the UP button. To adjust a parameter, first locate the parameter by scrolling to the appropriate menu (with combinations of the UP/DOWN and ENTER buttons). The display will show the VORTEX EF2211/EF2210 Reference Manual 26 Technical Support: 800.932.2774 LCD MENU STRUCTURE parameter field and the parameter value. To change the parameter, the parameter must be flashing. To make the parameter flash (assuming the front panel is not locked) press ENTER. Once the parameter is flashing, use the UP and DOWN buttons to adjust the parameter value. The parameter is instantly updated while it is being adjusted -- you should hear changes as the parameter is changing. RS-232 control strings are also sent via the RS-232 port so your remote control device is instantaneously updated as well. Press ENTER to select and store the parameter value or press ESC to cancel the selected value and return to the old value. Pressing HOME has the effect of pressing ESC then HOME, so the selected value will be cancelled and the menu will return to the top of the menu tree. Parameters that toggle or select among a list of options will wrap around when you reach the end, but parameters that adjust numeric values will not wrap around once the maximum or minimum value is reached. While adjusting a parameter, the UP/ DOWN button must be held down briefly before the repeat rate increases. © Polycom, Inc. 27 VORTEX EF2211/EF2210 Reference Manual LCD MENU STRUCTURE SYSTEM MENU The SYSTEM menu contains POWER ON PRESET, ACKNOWLEDGEMENT MODE, BUS REFERENCE, ERROR MESSAGES, FRONT PANEL LOCK, FRONT PANEL PASSWORD, DEVICE ID, BAUD RATE, FLOW CONTROL, LCD CONTRAST, METER, NON-VOLATILE MEMORY LOCK, NON-VOLATILE MEMORY PASSWORD, SCREEN SAVER, SOFTWARE VERSION, and REBOOT EF2211/EF2210 configurations. System Power On Preset Acknowledgement Mode Bus Reference Error Messages Front Panel Lock Front Panel Password Device ID Baud Rate Flow Control Meter Non-Volatile Memory Lock Non-Volatile Mem Password Screen Saver Last Restored Preset Software Version Reboot Vortex Power On Preset. Choose the EF2211/EF2210 Preset for power up. Acknowledgement Mode. This command controls whether or not status messages are sent. EF Bus Reference. This designates which EF2211/EF2210 device, when multiple devices are linked together, will put one of their echo canceller references on the EF bus to be used as the EF bus reference. Error Messages. Turns error messages On or Off. Front Panel Lock. Locks or unlocks the front panel. When the front panel is locked, you can see the parameters but you cannot change them. The default passcode is aspi (case is important). Front Panel Passcode. Once the device has been unlocked, the passcode may be changed. At the FRONT PANEL PASSCODE menu, press ENTER and then enter a passcode and press ENTER until you reach the end of the screen. Device ID. Selects the Device ID of the unit. Baud Rate. Selects baud rate of the RS-232. Flow Control. Selects flow control between Hardware, None, or Auto. Meter. Selects which signal is displayed on the front panel LED meter. Non-Volatile Memory Lock. Controls the non-volatile lock feature. When the non-volatile memory is locked, you can query the settings but will get an error if you try to change them. Non-Volatile Memory Password. This feature sets or queries the nonvolatile lock password. This password is used in conjunction with NON-VOLATILE MEMORY LOCK. The default password is aspi (case is important).