Polycom Vortex Series Application Notes
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Polycom Vortex Series Application Notes

Polycom Vortex Series Application Notes

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®
TM
Vortex
/ VSX
8000 Integration
Application Note
Polycom Installed Voice
Business Group
December 2004
1

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Summary of Contents for Polycom Vortex Series

  • Page 1 ® Vortex / VSX 8000 Integration Application Note Polycom Installed Voice Business Group December 2004...

  • Page 2: Table Of Contents

    ABLE OF ONTENTS INTRODUCTION ........................4 CONNECTING THE VSX 8000 INPUTS AND OUTPUTS .............4 ENABLING THE VSX 8000 TO WORK WITH A VORTEX DEVICE........6 GAIN STRUCTURE.......................7 Microphone Levels............................7 Gain Structure for Line Input Sources...................... 8 TESTING THE AUDIO INPUTS AND OUTPUTS ..............8 CONTROLLING A VORTEX DEVICE VIA THE VSX 8000 .............8 1.) Enable Vortex Mixer as an RS-232 Option in the VSX 8000..............
  • Page 3 WIRING FROM VSX 8000 TO VORTEX DEVICE ..............34 Input to VSX 8000 from Output of Vortex device................... 34 Output of VSX 8000 to Input of Vortex device..................34 TIPS FOR VSX 8000 ......................35 TECHNICAL SUPPORT ......................36 Polycom Installed Voice Business Contact Information ..............36...

  • Page 4: Introduction

    NPUTS AND UTPUTS In order to send and receive audio to the Polycom VSX 8000 codec, you need to connect the system as shown in Figure 1 and described below. 1. Connect one of the Outputs of the Vortex device to the mixer Input of the codec. By default, Outputs A, B, or C of the Vortex device are mix-minus versions of the Inputs A, B, or C signals, respectively.
  • Page 5 Figure 1. Connecting the VSX 8000 to a Vortex EF2241.

  • Page 6: Enabling The Vsx 8000 To Work With A Vortex Device

    You may use either the left or right channels for sending and receiving monaural audio to the VSX 8000. For stereo operation, both the left and right channels must be used. Please follow our instructions for wiring the Vortex device to the codec (See the section W VSX 8000 ).

  • Page 7: Gain Structure

    TRUCTURE ICROPHONE EVELS For wired microphones, the input gain on the Vortex is dependent on the sensitivity of the microphone as well as the typical distance from the talker to the microphone. Table 1. Recommended microphone settings. Type of Microphone Average Level Tabletop Mic Mode, 15 dB...

  • Page 8: Gain Structure For Line Input Sources

    TRUCTURE FOR NPUT OURCES Once the external devices have been wired to the Vortex Device, the Input and/or Output gain of the Vortex Device needs to be set to match the nominal level of the external devices. Here is a table that references the types of connectors to the proper input / output level of a Vortex Device: Table 2.

  • Page 9: Enable Vortex Mixer As An Rs-232 Option In The Vsx 8000

    VSX8000, the VSX 8000 will send ***MACROX180 to Serial Port 1 or Serial Port 2. When the Mute button is pushed again to unmute the VSX 8000, the VSX 8000 will send a ***MACROX181 to Serial Port 1 or Serial Port 2. Also, the Volume Up / Down buttons on the remote control also can control a Vortex Device.

  • Page 10: Create The Appropriate Macros In The Vortex Device(S)

    Figure 3. The RS-232 serial port wiring diagram. Match the baud rate and flow control requirements of the VSX 8000 device to the baud rate and flow control settings of the Vortex Device. (When communicating with a Vortex device at baud rates higher than 9600, we recommend the use of flow control between the RS-232 device and the Vortex Device).
  • Page 11 Next, insert the muting command for Input 1. Click Insert Command, Input, 1, Mute, On: Figure 5. Inserting the muting command. If you are successful, you should see this in the window: Figure 6. Result of inserting the macro definition. Repeat this process for Inputs 2-4.

  • Page 12: Volume Control (Codec Only)

    unmuted, repeat these steps for the appropriate inputs. OLUME ONTROL ODEC To use the Vortex Device to perform volume control, first set the VSX 8000’s Balanced Outputs to . On the VSX 8000 User Interface, go to S , and select IXED YSTEM DMIN...
  • Page 13 Figure 10. Volume increment macro creation. If you are successful, you should see this in the window: Figure 11. Result of selecting the volume increment option. Next, add the cross-point control for R1. Click Insert Command, Matrix, A (“From VSX 8000”), R1 (“Reference 1”), Gain, +, 1 dB:...
  • Page 14 Figure 12. Incrementing the gain in the reference. If you are successful, you should see this in the window: Figure 13. Volume up macro definition. For Macro 184, repeat the same steps as for Macro 183 except that the increments for each cross-point should be -1 dB.

  • Page 15: Volume Control (Codec And Telephone)

    Figure 14. Volume up and down macros. OLUME ONTROL ODEC AND ELEPHONE If the Vortex Device to be controlled has a built in telephone hybrid (such as the Vortex EF2241) or if the Vortex Device is linked via the EFBus to another Vortex Device that does have a built in telephone hybrid, the Volume Up / Down buttons of the VSX 8000 remote control can also control that volume.

  • Page 16: Verify That The Vsx 8000 Remote Control Properly Controls The Vortex Device

    3.) V VSX 8000 R ERIFY THAT THE EMOTE ONTROL PROPERLY CONTROLS THE ORTEX EVICE If there is only one Vortex Device, go to System, Diagnostics, Audio, Audio Meter in the VSX 8000 User Interface and first verify that there is activity on the Balanced In meter by talking into one of the microphones.

  • Page 17: Standard Aec Operation

    Figure 18. The console window. Repeat the process for the Volume Up and Volume Down buttons if you have assigned commands to Macro’s 183 and 184. AEC O TANDARD PERATION The default operation for the VSX 8000 and Vortex System is as a mono video codec connected via a single line level input and output to the Vortex Device.

  • Page 18: Example

    XAMPLE NTRODUCTION AYOUT This example illustrates a medium sized conference room with dimensions of 38 ft. X 24 ft. The ceiling height is 10 ft. The conference room that has 8 tabletop microphones and 4 ceiling loudspeakers. The system includes an EF2280 matrix mixer, a VSX 8000 video codec, and a stereo program audio source.
  • Page 19 Figure 19. Typical conference room layout.

  • Page 20: System Layout

    YSTEM AYOUT The audio components for the room are 8 tabletop microphones, 1 EF2280, 1 VSX 8000 video codec, 1 program audio source, and 4 ceiling loudspeakers. The video codec will use Input A / Output A. The program audio will use Inputs C and D. The amplifier will use Output B. On the VSX 8000, either the left or right input / outputs can be used for mono operation.

  • Page 21: Conference Composer Layout

    ONFERENCE OMPOSER AYOUT Most of the default parameters of the EF2280 will satisfy our design. However, we will need to change the Matrix Mixer and Presets to satisfy our design goals. Matrix Mixer The matrix mixer will need to be changed from the default settings in order use Output A for the VSX 8000 and Output B for the Amplifier.

  • Page 22: Presets

    Figure 21. Matrix for the VSX 8000 and Vortex integration. Presets In order to permanently save the settings to the EF2280, you must use a User Preset. Here, we've used P 16, although you may use any of the User Presets 16-47 to accomplish this task. RESET We've also renamed U 16 to C...
  • Page 23 Figure 22. Preset page within Conference Composer.

  • Page 24: Stereo Aec Operation

    AEC O TEREO PERATION This section explains what steps need to be taken in order to send a stereo microphone signal from a Vortex Device to the VSX 8000. In stereo operation, the Vortex Device is responsible for the acoustic echo cancellation, automixing, and matrix mixing for the microphones and the loudspeakers.
  • Page 25 Any stereo audio that is sent into the VSX 8000 will be reproduced on opposite channels at the far end when sent to a Polycom stereo-compatible codec, i.e. left channel input will be reproduced via the right loudspeaker and right channel input audio will be reproduced via the left channel loudspeaker.

  • Page 26: Example

    XAMPLE NTRODUCTION AYOUT This example illustrates a 38 ft. X 24 ft. X 10 ft. conference room that has 7 tabletop microphones and 2 stereo loudspeakers. The system includes an EF2280 matrix mixer, a VSX 8000 video codec, and a stereo program audio source. There is no sound reinforcement in this room. Figure 23.

  • Page 27: System Layout

    YSTEM AYOUT The audio components for the room are 7 tabletop microphones, 1 EF2280, 1 VSX 8000 video codec, 1 program audio source, and 2 program loudspeakers. The video codec will use Inputs C and D / Outputs C and D. The program audio will use Inputs A and B. The amplifier will use Outputs A and B.

  • Page 28: Conference Composer Layout

    ONFERENCE OMPOSER AYOUT Most of the default parameters of the EF2280 will satisfy our design. However, we will need to change the Mic/Line Inputs, Automixer, Matrix Mixer, and Presets to satisfy our design goals. Mic/Line Inputs On Inputs 5-7, the AEC needs to be set to R2 as shown in Figure 25. Figure 25.
  • Page 29 Inputs 1-3 need to be assigned to Output A to feed the left channel of the VSX 8000. Input 4 will be assigned to Outputs A and B at -3 dB since it is considered a center mic. By assigning a crosspoint attenuation of -3 dB, the level from the microphone when reproduced on the far end will be about the same as the left or right side microphones.

  • Page 30: Presets

    Figure 26. A sample matrix for using the Vortex with the VSX 8000. Presets In order to permanently save the settings to the EF2280, you must use a User Preset. Here, we've used P 16, although you may use any of the User Presets 16-47 to accomplish this task. RESET We've also renamed U 16 to C...
  • Page 31 Figure 27. The preset page within Conference Composer.

  • Page 32: System Layout

    1. Follow the instructions for integrating the SoundStation VTX 1000 and the Vortex Device in the Application Note entitled “Interfacing to the SoundStation VTX 1000” - http://www.polycom.com/common/pw_item_show_doc/1,1276,2321,00.pdf 2. Connect the Conference Link port of the SoundStation VTX 1000 to the VSX 7400 or VSX 8400.
  • Page 33 Figure 28. The system schematic for using the VSX 7000 with a Vortex EF2280 and a SoundStation VTX 1000.

  • Page 34: Wiring From Vsx 8000 To Vortex Device

    VSX 8000 IRING FROM ORTEX EVICE VSX 8000 NPUT TO FROM UTPUT OF ORTEX DEVICE Figure 29. Building a cable for the balanced to balanced connections on the Vortex and VSX 8000. Both the Vortex device and the VSX 8000 have the ground pin tied to the chassis ground of the unit.

  • Page 35: Tips For Vsx 8000

    VSX 8000 IPS FOR The internal volume control for the VSX 8000 controls the incoming remote 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.

  • Page 36: Technical Support

    770-350-4140 Phone 770-350-4142 Fax © 2004, Polycom, Inc. All rights reserved. Polycom and the Polycom logo design are registered trademarks. ViewStation, iPower, VSX, Vortex, People+Content, Siren 14 are all trademarks of Polycom, Inc. in various countries. All other trademarks and registered trademarks are the...

This manual is also suitable for:

Vortex ef2241Vortex ef2280Vsx 8000 series

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