User manual POLYCOM EF2280

Interfacing Vortex® Devices to Video Codecs Application Note Polycom Installed Voice Business Group Revision I September 2004 Table of Contents TABLE OF CONTENTS......................................................................................................................... 1 TABLE OF CONTENTS......................................................................................................................... 2 ® TM POLYCOM IPOWER 600 SERIES................................................................................................... 6 Connecting the iPower 600 Series Inputs and Outputs ....................................................... 6 Setting the AEC Reference Using an iPower 600 .................................................................................................................................... 9 MIC/LINE INPUTS.......................................................................................................................... 10 MATRIX MIXER ............................................................................................................................. 10 Testing the Audio Inputs and Outputs ................................................................................... 11 Wiring from iPower to Vortex Device................................................................................... 11 INPUT TO IPOWER FROM OUTPUT OF VORTEX DEVICE (USING CBL-LINEAUDIO)................................... 11 OUTPUT OF IPOWER TO INPUT OF VORTEX DEVICE........................................................................... 12 PowerMic Cable Pinout........................................................................................................... 12 POLYCOM IPOWER 900 SERIES ..................................................................................................... 13 Connecting the iPower 900 Series Inputs and Outputs ..................................................... 13 Setting the AEC Reference Using an iPower 900................................................................ 15 Testing the Audio Inputs and Outputs ................................................................................... 16 INPUT / OUTPUT TESTING ........................................................................................................... 16 LOOPBACK TESTING.................................................................................................................... 17 Wiring from iPower to Vortex Device................................................................................... 18 INPUT TO IPOWER FROM OUTPUT OF VORTEX DEVICE (USING CBL-LINEAUDIO)................................... 18 INPUT TO IPOWER FROM OUTPUT OF VORTEX DEVICE (USING SELF-MADE CABLE) .............................. 18 OUTPUT OF IPOWER TO INPUT OF VORTEX DEVICE........................................................................... 19 PowerMic Cable Pinout........................................................................................................... 19 POLYCOM IPOWER 9000 SERIES ................................................................................................... 20 Connecting the iPower 9000 Series Inputs and Outputs ................................................... 20 Disabling Readiness Monitor Microphone Error Messages............................................ 22 Setting the AEC Reference Using an iPower 9000.............................................................. 24 Testing the Audio Inputs and Outputs ................................................................................... 25 INPUT / OUTPUT TESTING ........................................................................................................... 25 LOOPBACK TESTING.................................................................................................................... 26 Wiring from iPower to Vortex Device................................................................................... 27 2 INPUT TO IPOWER FROM OUTPUT OF VORTEX ................................................................................. 27 OUTPUT OF IPOWER TO INPUT OF VORTEX DEVICE........................................................................... 27 POLYCOM VIEWSTATION® SP / SP384......................................................................................... 28 General Information.................................................................................................................. 28 POLYCOM VIEWSTATION 128 / H.323 / MP / 512 ........................................................................ 28 Connecting the ViewStation 128 / H.323 / MP / 512 Inputs and Outputs......................... 28 Setting the AEC Reference Using a ViewStation 128 / H.323 / MP / 512 ........................ 30 Testing the Audio Inputs and Outputs ................................................................................... 31 Wiring from ViewStation 128 / H.323 / MP / 512 to Vortex Device .................................. 31 INPUT TO VIEWSTATION CODEC FROM OUTPUT OF VORTEX DEVICE ................................................... 31 OUTPUT OF VIEWSTATION CODEC TO INPUT OF VORTEX DEVICE ........................................................ 32 Tips for ViewStation 128 / H.323 / MP / 512.......................................................................... 32 POLYCOM VIEWSTATION EX ......................................................................................................... 33 Connecting the ViewStation EX Inputs and Outputs .......................................................... 33 Setting the AEC Reference Using a ViewStation EX.......................................................... 35 Testing the Audio Inputs and Outputs ................................................................................... 35 Wiring from ViewStation EX to Vortex Device.................................................................... 36 INPUT TO VIEWSTATION EX FROM OUTPUT OF VORTEX DEVICE ........................................................ 36 OUTPUT OF VIEWSTATION EX TO INPUT OF VORTEX DEVICE............................................................. 36 Tips for ViewStation EX................................................................................................................ 36 POLYCOM VIEWSTATION FX.......................................................................................................... 37 Connecting the ViewStation FX Inputs and Outputs .......................................................... 37 Setting the AEC Reference Using a ViewStation FX .......................................................... 39 Testing the Audio Inputs and Outputs ................................................................................... 39 Wiring from ViewStation FX to Vortex Device.................................................................... 40 INPUT TO VIEWSTATION FX FROM OUTPUT OF VORTEX DEVICE ........................................................ 40 OUTPUT OF VIEWSTATION FX TO INPUT OF VORTEX DEVICE ............................................................. 40 Tips for ViewStation FX ........................................................................................................... 41 POLYCOM VS4000 ............................................................................................................................. 42 Connecting the VS4000 Inputs and Outputs ......................................................................... 42 Setting the AEC Reference Using a VS4000 ......................................................................... 44 Testing the Audio Inputs and Outputs ................................................................................... 45 Wiring from VS4000 to Vortex device.................................................................................... 45 INPUT TO VS4000 FROM OUTPUT OF VORTEX DEVICE..................................................................... 45 3 OUTPUT OF VS4000 TO INPUT OF VORTEX DEVICE ......................................................................... 46 Tips for VS4000........................................................................................................................... 46 POLYCOM VSXTM 7000....................................................................................................................... 47 Connecting the VSX 7000 Inputs and Outputs...................................................................... 47 Enabling the VSX 7000 to work with a Vortex Device ....................................................... 49 Testing the Audio Inputs and Outputs ................................................................................... 50 Wiring from VSX 7000 to Vortex Device ............................................................................... 50 INPUT TO VSX 7000 FROM OUTPUT OF VORTEX DEVICE .................................................................. 50 OUTPUT OF VSX 7000 TO INPUT OF VORTEX DEVICE....................................................................... 50 Tips for VSX 7000 ....................................................................................................................... 51 POLYCOM VSX 8000.......................................................................................................................... 52 Connecting the VSX 8000 Inputs and Outputs ............................................................................. 52 Enabling the VSX 8000 to work with a Vortex Device................................................................. 54 Gain Structure............................................................................................................................... 55 Microphone Levels ........................................................................................................................... 55 Gain Structure for Line Input Sources.............................................................................................. 56 Testing the Audio Inputs and Outputs.......................................................................................... 56 Controlling a Vortex Device via the VSX 8000............................................................................. 57 1.) Enable Vortex Mixer as an RS-232 Option in the VSX 8000 .................................................. 57 2.) Create the Appropriate Macros in the Vortex Device(s) Muting............................................ 58 Volume Control (Codec Only) ........................................................................................................ 59 Volume Control (Codec and Telephone) ....................................................................................... 62 3.) Verify that the VSX 8000 Remote Control properly controls the Vortex Device .................... 63 OTHER VIDEO CODECS..................................................................................................................... 65 Connecting the Inputs and Outputs........................................................................................ 65 Setting the AEC Reference ...................................................................................................... 65 Wiring from Codec to Vortex Device..................................................................................... 66 INPUT TO CODEC FROM OUTPUT OF VORTEX DEVICE........................................................................ 66 OUTPUT OF CODEC TO INPUT OF VORTEX DEVICE............................................................................. 67 SYSTEM EXAMPLE ........................................................................................................................... 68 Introduction / Room Layout ..................................................................................................... 68 System Layout ............................................................................................................................ 69 Conference Composer Layout EF2280.................................................................................... 70 EFBUS ..................................................................................................................................... 70 4 MATRIX MIXER ......................................................................................................................... 71 PRESETS................................................................................................................................... 73 Conference Composer Layout EF2201.................................................................................... 74 EFBUS ..................................................................................................................................... 74 PRESETS................................................................................................................................... 75 TECHNICAL SUPPORT...................................................................................................................... 77 Polycom Installed Voice Business group Contact Information .................................................... 77 5 Polycom® iPowerTM 600 Series CONNECTING THE IPOWER 600 SERIES INPUTS AND OUTPUTS In order to send and receive audio to the Polycom iPower 600 Series codec, you need to observe the following procedure: ® 1. Connect one of the Outputs of the Vortex device to the PowerMic Input of the codec. By default, Outputs A-C of the Vortex device are mix-minus versions of the Inputs' A-C signals. You must use the PowerMic adapter cable in order to send audio into the codec. You may order one by contacing your Polycom reseller and requesting part number CBLLINEAUDIO. You can also make your own cable. Click here for instructions. 2. Connect the line level output of the codec to one of the line level inputs of the Vortex device (Inputs A-D). You may use one of the Mic/Line level inputs, but you need to disable all processing on that input (AEC, AGC, NC, Automixer), disable Phantom Power, and set the input to line level versus the default of mic level. Follow the diagram below to make the proper physical connections to the codec. Do not use any other audio inputs or outputs as they could cause an audio loopback to occur within the codec. 6 7 Please follow our instructions for wiring the Vortex device to the codec. Failure to do so may induce noise into the signals sent and received from the codec. 3. Raise the gain on the appropriate Input of the Vortex device to +10 dB. 4. Lower the gain on the appropriate Output of the Vortex device to -10 dB. It is important to set the gain structure correctly so that you don't clip the input audio stage of the codec and that the Vortex device gets a good signal to perform processing with. The nominal input and output of the codec is .3 V rms. The nominal input and output of the Vortex device is .775 V rms. This equates to a difference of 8.24 dB between the two nominal levels. For simplicity, you may round that value to 10 dB. 8 SETTING THE AEC REFERENCE USING AN IPOWER 600 1. Open ADMINTOOLS (there should be a shortcut on the desktop), select the AUDIO Category, and click on the AUDIO INPUTS tab. De-select USE ECHO CANCELLATION, USE NOISE SUPPRESSION, and USE AUTOMATIC GAIN CONTROL (AGC) 2. Make sure that the Input to the Vortex device is assigned to the appropriate AEC Reference signal. Consult the Reference Manual for the Vortex device or the Help file in Conference ComposerTM for more information. 3. Turn on the white noise generator in the Vortex device and assign it to the output that will be sent to the iPower. If the output gain of the Vortex device is set to -10, set the crosspoint to -55. This is required because if the input of the iPower does not detect a signal, it will turn on the built-in microphone. Since the internal echo canceller of the iPower is disabled, the far end caller will hear an echo. As an example, here are the Mic/Line Inputs and the Matrix Mixer layout of a EF2280 that is connected to a iPower 680 via Input / Output A: 9 MIC/LINE INPUTS MATRIX MIXER 10 TESTING THE AUDIO INPUTS AND OUTPUTS 1. In order to run this test you simply press the Call Add Button as you would with any other test call, dial a string 0000000 (seven zeroes) and then press the Call Now Button. At this point the call will negotiate and you will see and hear yourself in a loopback. 2. Verify that you have enabled the white noise signal generator inside the Vortex device and have assigned it to the output of the Vortex device that will feed the input of the codec. Please see the section entitled "Setting the AEC Reference Using an iPower 600" and read Step 3. WIRING FROM IPOWER TO VORTEX DEVICE The inputs and outputs to the codec are unbalanced. We recommend keeping the cable from the Vortex device as short as possible to avoid any common-mode signals that may corrupt the audio. INPUT TO IPOWER FROM OUTPUT OF VORTEX DEVICE (USING CBL-LINEAUDIO) If you are using CBL-LINEAUDIO, connect the Positive conductor of the Vortex device to the Tip of the RCA connector and the Negative conductor of the Vortex device to Shield of the RCA connector. The shield of the cable is not connected. Input to iPower from Output of Vortex Device (Using Self-Made Cable) Connect the Positive conductor of the Vortex device to Pin 7 of DIN connector and the Negative conductor of the Vortex device to Pin 4 of the DIN connector. 11 The shield of the cable is not connected. OUTPUT OF IPOWER TO INPUT OF VORTEX DEVICE Connect the Positive conductor of the Vortex device to the Tip of the RCA connector and the Negative conductor of the Vortex device to Shield of the RCA connector. The shield of the cable is not connected. POWERMIC CABLE PINOUT You can make your own PowerMic Interface Cable. You first need a 7-pin Mini DIN connector. Most electronic supply houses should carry this connector. Once you've obtained the connector, connect the Positive conductor from the Vortex device to Pin 7 of the DIN connector. Connect the Negative conductor from the Vortex device to Pin 4 of the DIN connector. Do not connect the shield of the cable to the DIN connector. The PowerMic input is unbalanced in this configuration. We recommend keeping the cable from the Vortex device as short as possible to avoid any common-mode signals that may corrupt the audio. 12 Polycom iPower 900 Series CONNECTING THE IPOWER 900 SERIES INPUTS AND OUTPUTS In order to send and receive audio to the Polycom iPower 900 Series codec, you need to observe the following procedure: 1. Connect one of the Outputs of the Vortex device to the PowerMic Input of the codec. By default, Outputs A-C of the Vortex device are mix-minus versions of the Inputs' A-C signals. You must use the PowerMic adapter cable in order to send audio into the codec. You may order one by contacing your Polycom reseller and requesting part number CBLLINEAUDIO. You can also make your own cable. See the section labeled "PowerMic Cable Pinout" for instructions. 2. Connect the line level output of the codec to one of the line level inputs of the Vortex device (Inputs A-D). You may use one of the Mic/Line level inputs, but you need to disable all processing on that input (AEC, AGC, NC, Automixer), disable Phantom Power, and set the input to line level versus the default of mic level. Follow the diagram below to make the proper physical connections to the codec. Do not use any other audio inputs or outputs as they could cause an audio loopback to occur within the codec. 13 Please follow our instructions for wiring the Vortex device to the codec (See "Wiring from iPower to Vortex device"). Failure to do so may induce noise into the signals sent and received from the codec. 3. Raise the gain on the appropriate Input of the Vortex device to +10 dB. 4. Lower the gain on the appropriate Output of the Vortex device to -10 dB. It is important to set the gain structure correctly so that you don't clip the input audio stage of the codec and that the Vortex device gets a good signal to perform processing 14 with. The nominal input and output of the codec is .3 V rms. The nominal input and output of the Vortex device is .775 V rms. This equates to a difference of 8.24 dB between the two nominal levels. For simplicity, you may round that value to 10 dB. SETTING THE AEC REFERENCE USING AN IPOWER 900 1. Open AdminTools (there should be a shortcut on the desktop), select the Audio Category, and click on the Audio Inputs tab. De-select Use Echo Cancellation, Use Noise Suppression, and Use Automatic Gain Control (AGC) 2. Make sure that the Input to the Vortex device is assigned to the appropriate AEC Reference signal. Consult the Reference Manual for the Vortex device or the Help file in Conference Composer for more information. 15 TESTING THE AUDIO INPUTS AND OUTPUTS INPUT / OUTPUT TESTING Open Hardware Diagnostics. The shortcut should be located in the PROGRAMS, POLYCOM IPOWER, ADMINISTRATOR INFORMATION folder. Select TEST AUDIO. To test the input to the codec, select MICROPHONE A/V BOARD. You should see level activity for the left channel only. Set the INPUT VOLUME to halfway. 16 To test the output of the codec, select INTERNAL 1 KHZ TONE and raise the OUTPUT VOLUME sliders to MAX. This represents approximately 0 dB. LOOPBACK TESTING In order to make a successful loopback test with the iPower 900 Series, either all ISDN lines must be connected or all ISDN lines must be disconnected. If the ISDN lines are connected or disconnected, a reboot is needed prior to making a loopback call. 1. Place a call with "0000000" (seven zeroes) and click on "Call Now" button. 2. Once the call has finished connecting, you should see and hear yourself. 17 WIRING FROM IPOWER TO VORTEX DEVICE The inputs and outputs to the codec are unbalanced. We recommend keeping the cable from the Vortex device as short as possible to avoid any common-mode signals that may corrupt the audio. INPUT TO IPOWER FROM OUTPUT OF VORTEX DEVICE (USING CBL-LINEAUDIO) If you are using CBL-LINEAUDIO, connect the Positive conductor of the Vortex device to the Tip of the RCA connector and the Negative conductor of the Vortex device to Shield of the RCA connector. The shield of the cable is not connected. INPUT TO IPOWER FROM OUTPUT OF VORTEX DEVICE (USING SELF-MADE CABLE) Connect the Positive conductor of the Vortex device to Pin 7 of DIN connector and the Negative conductor of the Vortex device to Pin 4 of the DIN connector. The shield of the cable is not connected. 18 OUTPUT OF IPOWER TO INPUT OF VORTEX DEVICE Connect the Positive conductor of the Vortex device to the Tip of the 3.5 mm connector. Connect the Negative conductor of the Vortex device to the Shield of the 3.5 mm connector. Do not connect the ring of the 3.5 mm connector to the Vortex device. The shield of the cable is not connected. POWERMIC CABLE PINOUT You can make your own PowerMic Interface Cable. You first need a 7-pin Mini DIN connector. Most electronic supply houses should carry this connector. Once you've obtained the connector, connect the Positive conductor from the Vortex device to Pin 7 of the DIN connector. Connect the Negative conductor from the Vortex device to Pin 4 of the DIN connector. Do not connect the shield of the cable to the DIN connector. The PowerMic input is unbalanced in this configuration. We recommend keeping the cable from the Vortex device as short as possible to avoid any common-mode signals that may corrupt the audio. 19 Polycom iPower 9000 Series CONNECTING THE IPOWER 9000 SERIES INPUTS AND OUTPUTS In order to send and receive audio to the Polycom iPower 9000 Series codec, you need to observe the following procedure: 1. Connect one of the Outputs of the Vortex device to the left channel (colored white) of Input 2. Only use the left channel of Input 2. By default, Outputs A-C of the Vortex device are mix-minus versions of the Inputs A-C signals. Do not use the PowerMic Input to send audio into the codec. 2. Connect the left channel line level output of the codec (colored white) to one of the line level inputs of the Vortex device (Inputs A-D). You may use one of the Mic/Line level inputs, but you need to disable all processing on that input (AEC, AGC, NC, Automixer), disable Phantom Power, and set the input to line level versus the default of mic level. Follow the diagram below to make the proper physical connections to the codec. Do not use any other audio inputs or outputs as they could cause an audio loopback to occur within the codec. 20 Please follow our instructions for wiring the Vortex device to the codec. Failure to do so may induce noise into the signals sent and received from the codec. 21 5. Raise the gain on the appropriate Input of the Vortex device to +10 dB. 6. Lower the gain on the appropriate Output of the Vortex device to -10 dB. It is important to set the gain structure correctly so that you don't clip the input audio stage of the codec and that the Vortex device gets a good signal to perform processing with. The nominal input and output of the codec is .3 V rms. The nominal input and output of the Vortex device is .775 V rms. This equates to a difference of 8.24 dB between the two nominal levels. For simplicity, you may round that value to 10 dB. DISABLING READINESS MONITOR MICROPHONE ERROR MESSAGES After the codec is installed, the Readiness Monitor will alert you to the fact that a PowerMic is not plugged in to the codec (although the codec will be receiving a signal from the Vortex device): 22 In order to disable this warning box, open ADMINTOOLS (there may be a shortcut on the desktop; otherwise, the shortcut should be located under the Administrator Information folder), select UTILITIES, and click on the READINESS MONITORING tab. De-select MICROPHONE(S): 23 SETTING THE AEC REFERENCE USING AN IPOWER 9000 1. Open ADMINTOOLS (there should be a shortcut on the desktop), select the AUDIO Category, and click on the AUDIO INPUTS tab. De-select USE ECHO CANCELLATION, USE NOISE SUPPRESSION, and USE AUTOMATIC GAIN CONTROL (AGC) 2. Make sure that the Input to the Vortex device is assigned to the appropriate AEC Reference signal. Consult the Reference Manual for the Vortex device or the Help file in Conference Composer for more information. 24 TESTING THE AUDIO INPUTS AND OUTPUTS INPUT / OUTPUT TESTING Open Hardware Diagnostics. The shortcut should be located in the PROGRAMS, POLYCOM IPOWER, ADMINISTRATOR INFORMATION folder. Select TEST AUDIO. To test the input to the codec, select AUXILIARY AUDIO. You should see level activity for the left and right channels. Set the INPUT VOLUME to halfway. 25 To test the output of the codec, select A/V BOARD-GENERATED 1 KHZ TONE and raise the OUTPUT VOLUME sliders so that they are even with the third tick mark from the top. This represents approximately -12 dB. LOOPBACK TESTING In order to run this test you simply press the Call Add Button as you would with any other test call and you dial a string 0000000 (Seven Zeros) and then press the Call Now Button. At this point the call will negotiate and you will see and hear yourself in a Loopback. 26 WIRING FROM IPOWER TO VORTEX DEVICE The inputs and outputs to the codec are unbalanced. We recommend keeping the cable from the Vortex device as short as possible to avoid any common-mode signals that may corrupt the audio. INPUT TO IPOWER FROM OUTPUT OF VORTEX Connect the Positive conductor of the Vortex device to the Tip of the RCA connector and the Negative conductor of the Vortex device to Shield of the RCA connector. The shield of the cable is not connected. OUTPUT OF IPOWER TO INPUT OF VORTEX DEVICE Connect the Positive conductor of the Vortex device to the Tip of the RCA connector and the Negative conductor of the Vortex device to Shield of the RCA connector. The shield of the cable is not connected. 27 Polycom ViewStation® SP / SP384 GENERAL INFORMATION The ViewStation SP / SP384 does not have a separate mixer input unlike the other ViewStation products. As a result, the audio that is sent into the VCR input will be routed to the Monitor output of the ViewStation SP / SP384. This will cause the local side of the video call to hear their audio via the local loudspeakers. Because of this limitation, we do not recommend the use of the ViewStation SP / SP384 with Vortex Devices. Polycom ViewStation 128 / H.323 / MP / 512 CONNECTING THE VIEWSTATION 128 / H.323 / MP / 512 INPUTS AND OUTPUTS In order to send and receive audio to the Polycom ViewStation 128, H.323, MP, or 512 codec, you need to observe the following procedure: 1. Make sure that the ViewStation codec has firmware version 7.5 or higher installed in it. You can find this information on the System Info page. We do not recommend using a ViewStation 128, H.323, MP, or 512 codec with a Vortex device unless the ViewStation has firmware version 7.5 or higher because the internal echo canceller of the ViewStation could not be disabled in previous versions. 2. Connect one of the Outputs of the Vortex device to the mixer input of the codec. By default, Outputs A-C of the Vortex device are mix-minus versions of the Inputs A-C signals. 28 3. Connect the auxiliary line level output of the codec to one of the line level inputs of the Vortex device (Inputs A-D). You may use one of the Mic/Line level inputs, but you need to disable all processing on that input (AEC, AGC, NC, Automixer), disable Phantom Power, and set the input to line level versus the default of mic level. Follow the diagram below to make the proper physical connections to the codec. Do not use any other audio inputs or outputs as they could cause an audio loopback to occur within the codec. 29 You may connect either the left or the right channel of the auxiliary line level output to the Vortex device. Any audio that is sent from the far side will be monaural. Please follow our instructions for wiring the Vortex device to the codec (See "Wiring from ViewStation 128/H.323/MP/512 to Vortex device"). Failure to do so may induce noise into the signals sent and received from the codec. 3. Raise the gain on the appropriate Input of the Vortex device to +10 dB. 4. Lower the gain on the appropriate Output of the Vortex device to -10 dB. It is important to set the gain structure correctly so that you don't clip the input audio stage of the codec and that the Vortex device gets a good signal to perform processing with. The nominal input and output of the codec is .3 V rms. The nominal input and output of the Vortex device is .775 V rms. This equates to a difference of 8.24 dB between the two nominal levels. For simplicity, you may round that value to 10 dB. SETTING THE AEC REFERENCE USING A VIEWSTATION 128 / H.323 / MP / 512 1. Connect a monitor to Output 1 of the codec. By default, the composite output is enabled and the SVideo output is disabled. 2. Go to SYSTEM INFO, ADMIN SETUP, PHONE AUDIO, and check the ECHO CANCELLER option. Ignore the warning that is displayed on the screen about disabling the echo canceller and select OK. 3. Once that is completed, make sure that the Input to the Vortex device is assigned to the appropriate AEC Reference signal. Consult Reference Manual for the Vortex device or the Help file in Conference Composer for more information. 30 TESTING THE AUDIO INPUTS AND OUTPUTS 1. Go to SYSTEM INFO, ADMIN SETUP, PHONE AUDIO, and check the ECHO CANCELLER option. You must enable the codec's internal echo canceller in order for the audio meter described in Step 2 to work properly. 2. Go to SYSTEM INFO, DIAGNOSTICS, AUDIO, AUDIO METER and then speak into one of the microphones. Your level should be around 0 on the meter. You may also use the loop-back feature to listen to your own audio in the local room. That feature is under SYSTEM INFO, DIAGNOSTICS, NEAR END LOOP. 3. Go to SYSTEM INFO, DIAGNOSTICS, AUDIO, GENERATE TONE to listen to a codec-generated 1 kHz tone. 4. Go to SYSTEM INFO, ADMIN SETUP, PHONE AUDIO, and un-check the ECHO CANCELLER option. WIRING FROM VIEWSTATION 128 / H.323 / MP / 512 TO VORTEX DEVICE The inputs and outputs to most codecs are unbalanced. We recommend keeping the cable from the Vortex device as short as possible to avoid any common-mode signals that may corrupt the audio. INPUT TO VIEWSTATION CODEC FROM OUTPUT OF VORTEX DEVICE Connect the Positive conductor of the Vortex device to the Tip of the RCA connector and the Negative conductor of the Vortex device to Shield of the RCA connector. The shield of the cable is not connected. 31 OUTPUT OF VIEWSTATION CODEC TO INPUT OF VORTEX DEVICE Connect the Positive conductor of the Vortex device to the Tip of the RCA connector and the Negative conductor of the Vortex device to Shield of the RCA connector. The shield of the cable is not connected. TIPS FOR VIEWSTATION 128 / H.323 / MP / 512 1. The volume control for the ViewStation codec controls the incoming far side audio and the local tone generator. It does not, however, control the sound effects inside the units such as incoming call ring and the female speech that occurs when you dial a number. This is important to note because if the volume control is very low, it may appear that the codec audio is operating correctly because the sound effects are still generated and will be heard in the local room. However, when a call is connected, the local side may not hear the far side because the local volume control is too low. Since the local participants heard the sound effects audio at a normal level, it may not be obvious that the volume control is set too low. The sound effects volume control can be adjusted in the SYSTEM INFO, ADMIN SETUP, PHONE AUDIO page. 2. If the ViewStation codec is turned off either through the power switch or unplugged from the wall while the codec is still connected to the Vortex device via the input and output audio cables, a loopback will occur in the codec. This means that a portion of the audio signal that is sent to the codec from the Vortex device will be coupled into the signal that is sent from the codec to the Vortex device. This will cause the local room to hear a reinforced version of their own speech via the local room loudspeakers. Our recommendation is to leave the codec power on all the time; however, if the codec must be powered down, we recommend muting either the output channel of the Vortex device that will feed the input of the codec or the input channel of the Vortex device that is connected to the output of the codec. 32 Polycom ViewStation EX CONNECTING THE VIEWSTATION EX INPUTS AND OUTPUTS In order to send and receive audio to the Polycom ViewStation EX codec, you need to observe the following procedure: 2. Connect one of the Outputs of the Vortex device to the mixer input of the codec. By default, Outputs A-C of the Vortex device are mix-minus versions of the Inputs A-C signals. 4. Connect the auxiliary line level output of the codec to one of the line level inputs of the Vortex device (Inputs A-D). You may use one of the Mic/Line level inputs, but you need to disable all processing on that input (AEC, AGC, NC, Automixer), disable Phantom Power, and set the input to line level versus the default of mic level. Follow the diagram below to make the proper physical connections to the codec. Do not use any other audio inputs or outputs as they could cause an audio loopback to occur within the codec. 33 You may connect either the left or the right channel of the auxiliary line level output to the Vortex device. Any audio that is sent from the far side will be monaural. Please follow our instructions for wiring the Vortex device to the codec (See "Wiring from ViewStation EX to Vortex device"). Failure to do so may induce noise into the signals sent and received from the codec. 5. Raise the gain on the appropriate Input of the Vortex device to +10 dB. 34 6. Lower the gain on the appropriate Output of the Vortex device to -10 dB. It is important to set the gain structure correctly so that you don't clip the input audio stage of the codec and that the Vortex device gets a good signal to perform processing with. The nominal input and output of the codec is .3 V rms. The nominal input and output of the Vortex device is .775 V rms. This equates to a difference of 8.24 dB between the two nominal levels. For simplicity, you may round that value to 10 dB. SETTING THE AEC REFERENCE USING A VIEWSTATION EX 4. Connect a monitor to Output 1 of the codec. By default, the composite output is enabled and the SVideo output is disabled. 5. Go to SYSTEM INFO, ADMIN SETUP, PHONE AUDIO, and check the ECHO CANCELLER option. Ignore the warning that is displayed on the screen about disabling the echo canceller and select OK. 6. Once that is completed, make sure that the Input to the Vortex device is assigned to the appropriate AEC Reference signal. Consult Reference Manual for the Vortex device or the Help file in Conference Composer for more information. TESTING THE AUDIO INPUTS AND OUTPUTS 2. Go to SYSTEM INFO, ADMIN SETUP, PHONE AUDIO, and check the ECHO CANCELLER option. You must enable the codec's internal echo canceller in order for the audio meter described in Step 2 to work properly. 5. Go to SYSTEM INFO, DIAGNOSTICS, AUDIO, AUDIO METER and then speak into one of the microphones. Your level should be around 0 on the meter. You may also use the loop-back feature to listen to your own audio in the local room. That feature is under SYSTEM INFO, DIAGNOSTICS, NEAR END LOOP. 6. Go to SYSTEM INFO, DIAGNOSTICS, AUDIO, GENERATE TONE to listen to a codec-generated 1 kHz tone. 7. Go to SYSTEM INFO, ADMIN SETUP, PHONE AUDIO, and un-check the ECHO CANCELLER option. 35 WIRING FROM VIEWSTATION EX TO VORTEX DEVICE The inputs and outputs to most codecs are unbalanced. We recommend keeping the cable from the Vortex device as short as possible to avoid any common-mode signals that may corrupt the audio. INPUT TO VIEWSTATION EX FROM OUTPUT OF VORTEX DEVICE Connect the Positive conductor of the Vortex device to the Tip of the RCA connector and the Negative conductor of the Vortex device to Shield of the RCA connector. The shield of the cable is not connected. OUTPUT OF VIEWSTATION EX TO INPUT OF VORTEX DEVICE Connect the Positive conductor of the Vortex device to the Tip of the RCA connector and the Negative conductor of the Vortex device to Shield of the RCA connector. The shield of the cable is not connected. TIPS FOR VIEWSTATION EX 1. The volume control for the ViewStation EX controls the incoming far side audio and the local tone generator. It does not, however, control the sound effects inside the units such as incoming call ring and the female speech that occurs when you dial a number. This is important to note because if the volume control is very low, it may appear that the codec audio is operating correctly because the sound effects are still generated and will be heard in the local room. However, when a call is connected, the local side may not hear the far side because the local volume control is too low. Since the local participants heard the sound effects audio at a normal level, it may not be obvious that the volume control is set too low. 36 The sound effects volume control can be adjusted in the System Info, Admin Setup, Phone Audio page. 2. If the ViewStation EX is turned off either through the power switch or unplugged from the wall while the codec is still connected to the Vortex device via the input and output audio cables, a loopback will occur in the codec. This means that a portion of the audio signal that is sent to the codec from the Vortex device will be coupled into the signal that is sent from the codec to the Vortex device. This will cause the local room to hear a reinforced version of their own speech via the local room loudspeakers. Our recommendation is to leave the codec power on all the time; however, if the codec must be powered down, we recommend muting either the output channel of the Vortex device that will feed the input of the codec or the input channel of the Vortex device that is connected to the output of the codec. Polycom ViewStation FX CONNECTING THE VIEWSTATION FX INPUTS AND OUTPUTS In order to send and receive audio to the Polycom ViewStation FX codec, you need to observe the following procedure: 1. Connect one of the Outputs of the Vortex device to the mixer input of the codec. By default, Outputs A-C of the Vortex device are mix-minus versions of the Inputs A-C signals. 2. Connect the auxiliary line level output of the codec to one of the line level inputs of the Vortex device (Inputs A-D). You may use one of the Mic/Line level inputs, but you need to disable all processing on that input (AEC, AGC, NC, Automixer), disable Phantom Power, and set the input to line level versus the default of mic level. Follow the diagram below to make the proper physical connections to the codec. Do not use any other audio inputs or outputs as they could cause an audio loopback to occur within the codec. 37 You may connect either the left or the right channel of the auxiliary line level output to the Vortex device. Any audio that is sent from the far side will be monaural. Please follow our instructions for wiring the Vortex device to the codec (See "Wiring from ViewStation FX to Vortex device"). Failure to do so may induce noise into the signals sent and received from the codec. 38 3. Raise the gain on the appropriate Input of the Vortex device to +10 dB. 4. Lower the gain on the appropriate Output of the Vortex device to -10 dB. It is important to set the gain structure correctly so that you don't clip the input audio stage of the codec and that the Vortex device gets a good signal to perform processing with. The nominal input and output of the codec is .3 V rms. The nominal input and output of the Vortex device is .775 V rms. This equates to a difference of 8.24 dB between the two nominal levels. For simplicity, you may round that value to 10 dB. SETTING THE AEC REFERENCE USING A VIEWSTATION FX 1. Connect a monitor to Output 1 of the codec. By default, the composite output is enabled and the SVideo output is disabled. 2. Go to SYSTEM INFO, ADMIN SETUP, PHONE AUDIO, and check the ECHO CANCELLER option. Ignore the warning that is displayed on the screen about disabling the echo canceller and select OK. 3. Once that is completed, make sure that the Input to the Vortex device is assigned to the appropriate AEC Reference signal. Consult Reference Manual for the Vortex device or the Help file in Conference Composer for more information. TESTING THE AUDIO INPUTS AND OUTPUTS 1. Go to SYSTEM INFO, ADMIN SETUP, PHONE AUDIO, and check the ECHO CANCELLER option. You must enable the codec's internal echo canceller in order for the audio meter described in Step 2 to work properly. 2. Go to SYSTEM INFO, DIAGNOSTICS, AUDIO, AUDIO METER and then speak into one of the microphones. Your level should be around 0 on the meter. You may also use the loop-back feature to listen to your own audio in the local room. That feature is under SYSTEM INFO, DIAGNOSTICS, NEAR END LOOP. 3. Go to SYSTEM INFO, DIAGNOSTICS, AUDIO, GENERATE TONE to listen to a codec-generated 1 kHz tone. 39 4. Go to SYSTEM INFO, ADMIN SETUP, PHONE AUDIO, and un-check the ECHO CANCELLER option. WIRING FROM VIEWSTATION FX TO VORTEX DEVICE The inputs and outputs to most codecs are unbalanced. We recommend keeping the cable from the Vortex device as short as possible to avoid any common-mode signals that may corrupt the audio. INPUT TO VIEWSTATION FX FROM OUTPUT OF VORTEX DEVICE Connect the Positive conductor of the Vortex device to the Tip of the RCA connector and the Negative conductor of the Vortex device to Shield of the RCA connector. The shield of the cable is not connected. OUTPUT OF VIEWSTATION FX TO INPUT OF VORTEX DEVICE Connect the Positive conductor of the Vortex device to the Tip of the RCA connector and the Negative conductor of the Vortex device to Shield of the RCA connector. The shield of the cable is not connected. 40 TIPS FOR VIEWSTATION FX 1. The volume control for the ViewStation FX controls the incoming far side audio and the local tone generator. It does not, however, control the sound effects inside the units such as incoming call ring and the female speech that occurs when you dial a number. This is important to note because if the volume control is very low, it may appear that the codec audio is operating correctly because the sound effects are still generated and will be heard in the local room. However, when a call is connected, the local side may not hear the far side because the local volume control is too low. Since the local participants heard the sound effects audio at a normal level, it may not be obvious that the volume control is set too low. The sound effects volume control can be adjusted in the System Info, Admin Setup, Phone Audio page. 2. If the ViewStation FX is turned off either through the power switch or unplugged from the wall while the codec is still connected to the Vortex device via the input and output audio cables, a loopback will occur in the codec. This means that a portion of the audio signal that is sent to the codec from the Vortex device will be coupled into the signal that is sent from the codec to the Vortex device. This will cause the local room to hear a reinforced version of their own speech via the local room loudspeakers. Our recommendation is to leave the codec power on all the time; however, if the codec must be powered down, we recommend muting either the output channel of the Vortex device that will feed the input of the codec or the input channel of the Vortex device that is connected to the output of the codec. 41 Polycom VS4000 CONNECTING THE VS4000 INPUTS AND OUTPUTS In order to send and receive audio to the Polycom VS4000 codec, you need to observe the following procedure: 1. Connect one of the Outputs of the Vortex device to the mixer input of the codec. By default, Outputs A-C of the Vortex device are mix-minus versions of the Inputs A-C signals. 2. Connect the auxiliary line level output of the codec to one of the line level inputs of the Vortex device (Inputs A-D). You may use one of the Mic/Line level inputs, but you need to disable all processing on that input (AEC, AGC, NC, Automixer), disable Phantom Power, and set the input to line level versus the default of mic level. Follow the diagram below to make the proper physical connections to the codec. Do not use any other audio inputs or outputs as they could cause an audio loopback to occur within the codec. 42 43 You may connect either the left or the right channel of the auxiliary line level output to the Vortex device. Any audio that is sent from the far side will be monaural. Please follow our instructions for wiring the Vortex device to the codec (See "Wiring from VS4000 to Vortex device"). Failure to do so may induce noise into the signals sent and received from the codec. 3. Raise the gain on the appropriate Input of the Vortex device to +10 dB. 4. Lower the gain on the appropriate Output of the Vortex device to -10 dB. It is important to set the gain structure correctly so that you don't clip the input audio stage of the codec and that the Vortex device gets a good signal to perform processing with. The nominal input and output of the codec is .3 V rms. The nominal input and output of the Vortex device is .775 V rms. This equates to a difference of 8.24 dB between the two nominal levels. For simplicity, you may round that value to 10 dB. SETTING THE AEC REFERENCE USING A VS4000 1. Connect a monitor to Output 1 of the codec. By default, the composite output is enabled and the SVideo output is disabled. 2. Go to SYSTEM INFO, ADMIN SETUP, PHONE AUDIO, and check the ECHO CANCELLER option. Ignore the warning that is displayed on the screen about disabling the echo canceller and select OK. 3. Once that is completed, make sure that the Input to the Vortex device is assigned to the appropriate AEC Reference signal. Consult the Reference Manual for the Vortex device or the Help file in Conference Composer for more information. 44 TESTING THE AUDIO INPUTS AND OUTPUTS 1. Go to SYSTEM INFO, ADMIN SETUP, PHONE AUDIO, and check the ECHO CANCELLER option. You must enable the codec's internal echo canceller in order for the audio meter described in Step 2 to work properly. 2. Go to SYSTEM INFO, DIAGNOSTICS, AUDIO, AUDIO METER and then speak into one of the microphones. Your level should be around 0 on the meter. You may also use the loop-back feature to listen to your own audio in the local room. That feature is under SYSTEM INFO, DIAGNOSTICS, NEAR END LOOP. 3. Go to SYSTEM INFO, DIAGNOSTICS, AUDIO, GENERATE TONE to listen to a codec-generated 1 kHz tone. 4. Go to SYSTEM INFO, ADMIN SETUP, PHONE AUDIO, and un-check the ECHO CANCELLER option. WIRING FROM VS4000 TO VORTEX DEVICE The inputs and outputs to most codecs are unbalanced. We recommend keeping the cable from the Vortex device as short as possible to avoid any common-mode signals that may corrupt the audio. INPUT TO VS4000 FROM OUTPUT OF VORTEX DEVICE Connect the Positive conductor of the Vortex Device to the Tip of the RCA connector and the Negative conductor of the Vortex device to Shield of the RCA connector. The shield of the cable is not connected. 45 OUTPUT OF VS4000 TO INPUT OF VORTEX DEVICE Connect the Positive conductor of the Vortex Device to the Tip of the RCA connector and the Negative conductor of the Vortex device to Shield of the RCA connector. The shield of the cable is not connected. TIPS FOR VS4000 The volume control for the VS4000 controls the incoming far side audio and the local tone generator. It does not, however, control the sound effects inside the units such as incoming call ring and the female speech that occurs when you dial a number. This is important to note because if the volume control is very low, it may appear that the codec audio is fine because the sound effects are still generated and will be heard in the local room. However, when a call is connected, the local side may not hear the far side because the local volume control is too low. Since the local participants heard the sound effects audio at a normal level, it may not be obvious that the volume control is set too low. The sound effects volume control can be adjusted in the System Info, Admin Setup, Phone Audio page. 46 Polycom VSXTM 7000 CONNECTING THE VSX 7000 INPUTS AND OUTPUTS In order to send and receive audio to the Polycom VSX 7000 codec, you need to observe the following procedure: 1. Connect one of the Outputs of the Vortex device to the mixer Input of the codec. By default, Outputs A-C of the Vortex device are mix-minus versions of the Inputs A-C signals. 2. Connect the auxiliary line level output of the codec to one of the line level inputs of the Vortex device (Inputs A-D). You may use one of the Mic/Line level inputs, but you need to disable all processing on that input (AEC, AGC, NC, Automixer), disable Phantom Power, and set the input to line level versus the default of mic level. 47 48 You may connect either the left or the right channel of the auxiliary line level output to the Vortex device. Any audio that is sent from the far side will be monaural. Please follow our instructions for wiring the Vortex device to the codec. Failure to do so may induce noise into the signals sent and received from the codec. 3. Raise the gain on the appropriate Input of the Vortex device to +10 dB. 4. Lower the gain on the appropriate Output of the Vortex device to -10 dB. It is important to set the gain structure correctly so that you don't clip the input audio stage of the codec and that the Vortex device gets a good signal to perform processing with. The nominal input and output of the codec is .3 V rms. The nominal input and output of the Vortex device is .775 V rms. This equates to a difference of 8.24 dB between the two nominal levels. For simplicity, you may round that value to 10 dB. ENABLING THE VSX 7000 TO WORK WITH A VORTEX DEVICE We recommend that the firmware version of the VSX 7000 be updated to at least 7.0 or higher because the internal VSX 7000 echo canceller can be disabled. 1. Connect a monitor to the video output of the codec. 2. Go to System, Admin Settings, Audio Settings, and select NEXT for Page 2. Select the AUDIO MIXER option for the Line Input that is connected to the Vortex device. Select OFF for the Echo Canceller option. Select Monitor-Far Site Audio for the Line Output. For both settings, leave the LEVEL settings at 5. 3. Disable the loudspeaker that is built-in to the VSX console. Go to System, Admin Settings, Audio Settings, and select NEXT, NEXT for Page 3. Select OFF for MIDRANGE SPEAKER. Depending on the type of loudspeakers you are using, you may want to lower and/or disable the Subwoofer. Make those changes in the SUBWOOFER SPEAKER and SUBWOOFER OFFSET sections. 4. Once that is completed, make sure that the Input to the Vortex device is assigned to the appropriate AEC Reference signal. 49 TESTING THE AUDIO INPUTS AND OUTPUTS 1. Go to System, Diagnostics, Audio, Audio Meter and then speak into one of the microphones. Your level should be around 0 on the Line Input meter. You may also use the loop-back feature to listen to your own audio in the local room. That feature is under System, Diagnostics, Network, Near End Loop. 2. Go to System Info, Diagnostics, Audio, Generate Tone to listen to a codec-generated 400 Hz tone. WIRING FROM VSX 7000 TO VORTEX DEVICE The inputs and outputs to most codecs are unbalanced. We recommend keeping the cable from the Vortex device as short as possible to avoid any common-mode signals that may corrupt the audio. INPUT TO VSX 7000 FROM OUTPUT OF VORTEX DEVICE Connect the Positive conductor of the Vortex device to the Tip of the RCA connector and the Negative conductor of the Vortex device to Shield of the RCA connector. The shield of the cable is not connected. OUTPUT OF VSX 7000 TO INPUT OF VORTEX DEVICE Connect the Positive conductor of the Vortex device to the Tip of the RCA connector and the Negative conductor of the Vortex device to Shield of the RCA connector. 50