Page 1 Interfacing to the SoundStation VTX 1000 ® with Vortex Devices Application Note Polycom Installed Voice Business Group September 2004 Rev. F...
Page 2: Table Of Contents
SYSTEM OVERVIEW ........................... 8 Voice (Narrowband and Wideband) ..........................8 Voice (Narrowband and Wideband) and Video......................9 Narrowband Voice via Vortex Hybrid and Wideband Voice through SoundStation VTX 1000 ........10 SYSTEM SETUP DIRECTIONS......................11 1.) CONNECTING A MICROPHONE TO A VORTEX DEVICE ............12 Overview Drawing ............................
Page 3 8.) CONNECTING OTHER SOURCES TO A VORTEX DEVICE ............25 Vortex Input Wiring............................25 Balanced Input................................25 Unbalanced Input.................................25 Vortex Output Wiring............................ 26 Balanced Input................................26 Unbalanced Input.................................26 9.) SETTING THE GAIN OF THE VORTEX DEVICE................. 26 Microphone Levels............................27 Gain Structure for External Amplifiers and Other Sources................27 10.) ENABLE VTX MODE IN THE VORTEX DEVICE...............
Page 4 Wiring Recommendations / Limitations ....................... 95 APPENDIX B: SOUNDSTATION VTX 1000 USER CONTROLS / LCD LAYOUT ......98 APPENDIX C: VORTEX INPUT WIRING ..................99 Cable Drawing 1: Wired Microphone Connection .....................99 Cable Drawing 2: Balanced Output to Vortex Input Connection................99...
Page 5 Cable Drawing 3: Unbalanced Output to Vortex Input Connection................99 APPENDIX D: VORTEX OUTPUT WIRING .................. 100 Cable Drawing 1: Vortex Output to Balanced Input ....................100 Cable Drawing 2: Vortex Output to Unbalanced Input.....................100 APPENDIX E: VORTEX INTERNAL AMPLIFIER WIRING............101 Two 8 ohm Loudspeakers Connected in Parallel..................
Page 6: Introduction
, or VoiceStation 100. In order for the SoundStation VTX 1000 to work correctly with Vortex devices, the firmware must be upgraded to Version 1.22 (August 26, 2003) or higher. Please refer to the SoundStation VTX 1000 User's Guide / Administrator's Guide for the proper instructions.
Page 7: Summary
UMMARY If you are already familiar with Vortex devices, you may not need to read the entire application note. Here is a quick overview of the entire process: 1. Connect the microphones to the Vortex device(s). Make sure phantom power is enabled for microphones that require it.
Page 8: System Overview
ARROWBAND AND IDEBAND Here, a local talker uses a Vortex device and a SoundStation VTX 1000 to send audio, both narrowband and wideband, to a remote person via the Public Switched Telephone Network (PSTN). We will assume that the Remote Talker has a SoundStation VTX 1000 and can receive wideband calls. The Vortex device receives audio from a microphone in the local room and sends the remote speech to a loudspeaker also in the local room.
Page 9: Voice (Narrowband And Wideband) And Video
IDEBAND IDEO Here, a local talker uses a Vortex device, a SoundStation VTX 1000, and a video codec to send audio to two remote people. We will assume that Remote Talker 1 has a SoundStation VTX 1000 and can receive wideband telephone calls.
Page 10: Narrowband Voice Via Vortex Hybrid And Wideband Voice Through Soundstation Vtx 1000
The Vortex device also mixes the local speech and Remote Talker 1 speech so that the mix can be sent to Remote Talker 2. Likewise, the Vortex device mixes the local speech and Remote Talker 2 speech so that the mix can be sent to Remote Talker 1.
Page 11: System Setup Directions
8. Connect any other sources to the Vortex device(s). These sources would include video codecs, recorders, CD players, and DVD players. 9. Set the gain of all input and output sources that are connected to the Vortex device(s) based upon the nominal send and receive levels of the Vortex device(s).
Page 12: Connecting A Microphone To A Vortex Device
1.) C ONNECTING A ICROPHONE TO A ORTEX EVICE VERVIEW RAWING This drawing illustrates 1 tabletop microphone that is connected to Mic / Line Input 1 of a Vortex EF2280:...
Page 13: Physical Connections
XLR connector, the Negative conductor of the Vortex device to Pin 3 of the XLR connector, and the Shield of the Vortex device to the Pin 1 of the XLR connector. Refer to Cable Drawing 1 in the Vortex Input...
Page 14: Using Wireless Microphones
If the cable that comes with the microphone is long enough to reach the Vortex device, you may cut off the male XLR connector and use wire strippers to remove the outer sheath and any shielding of the conductors. This will allow you to connect the wire directly to one of the provided Phoenix connectors.
Page 15: Connecting A Loudspeaker To A Vortex Device
The loudspeaker output of the Vortex EF2241, EF2210, or EF2211 supports a total loudspeaker load of 4 - 8 ohms. The built-in amplifier can provide a maximum of 10 Watts of power to the loudspeaker. Below are...
Page 16: External Amplifier
XTERNAL MPLIFIER Here, one of the line-level outputs of a Vortex EF2241 is sent to an amplifier to power a group of loudspeakers. XTERNAL MPLIFIER NPUTS All amplifiers will have one of two types of connectors: XLR or RCA: An XLR connector uses two conductors (positive and negative) and a ground line to transfer signal from one device to another device.
Page 17: Internal Amplifier Overview Drawing
If the input of the amplifier has a balanced input, connect the Positive conductor of the Vortex device to Pin 2 of the XLR connector, the Negative conductor of the Vortex device to Pin 3 of the XLR connector, and the Shield of the Vortex device to the Pin 1 of the XLR connector.
Page 18: Connecting The Soundstation Vtx 1000 To A Vortex Device
2.) Connect Output B the Vortex device to the Auxiliary Input of the Interface Module. By default, Outputs A, B, and C of the Vortex device is a mix-minus version of the Input B signal. The drawing below illustrates the use Input B and Output B of a Vortex EF2280 to connect to the Interface Module.
Page 19: Input To Interface Module 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. Refer to Cable Drawing 2 in the Vortex Output Wiring section of the Appendix.
Page 20: Wiring
Vortex as there may be other loudspeakers in the room that you may wish to use. If you do want to use a subwoofer, you can connect an output of the Vortex directly to the subwoofer as a subwoofer typically accepts a line level input. You will need to set the output gain of the Vortex to -30 dB because if the Vortex output is set higher than -30 dB, the subwoofer voice coil may "bottom out"...
Page 21 HONE the Vortex EF2241 is disabled until the Vortex EF2241 is placed on-hook. When wideband calls are desired, the telephone portion of the Vortex EF2241 will not be active and the Vortex EF2241 will pass any signals at the L jack to the P jack.
Page 22: Device
OMPOSER Instructions that are located in the C folder of each device type. OMMON PERATIONS 7.) C ONFIGURING THE OUND TATION 1000 Both the Vortex device and the SoundStation VTX 1000 must be setup properly to input and output audio...
Page 23 Vortex as well as to make wideband audio calls. The default settings for the SoundStation VTX 1000 will not allow one to send and receive audio from the VTX into the Vortex. We will discuss how to setup the Vortex device in Step 10.
Page 25: Connecting Other Sources To A Vortex Device
Connect the Positive conductor of the Vortex device to Pin 2 of the XLR connector, the Negative conductor of the Vortex device to Pin 3 of the XLR connector, and the Shield of the cable to the only to the Vortex device.
Page 26: Vortex Output Wiring
Connect the Positive conductor of the Vortex device to Pin 2 of the XLR connector, the Negative conductor of the Vortex device to Pin 3 of the XLR connector, and the Shield of the cable to the only to the Vortex device.
Page 27: Microphone Levels
Have another person watch the levels in Conference Composer or via the front panel of the Vortex device. You want the speech to light up the first yellow LED (0 dBu) and flicker the second yellow LED (+3 dB). This level indicates that the Vortex device has a good level for processing while still retaining about 20 dB of headroom.
Page 28: Enable Vtx Mode In The Vortex Device
10 dB. Therefore, the inputs of the Vortex that receive consumer level outputs need to be set to +10 dB in order to achieve a unity gain. The outputs of the Vortex will be about 10 dB too high for the consumer level equipment and, in turn, need to be set to -10 dB to avoid clipping and to maintain enough headroom in the consumer level devices.
Page 29 1. Enable SoundStation VTX 1000 Mode for the appropriate input of the Vortex device. This can be done from Conference Composer or via the front panel of the unit. In Conference Composer, go to the Inputs page and click the SoundStation VTX 1000 Mode button:...
Page 30: Making A Test Call With Soundstation Vtx 1000
From the front panel, go to the V menu item, press E , select the ORTEX UTPUT ETTINGS NTER appropriate input, use the D or U buttons to scroll the menu items until you see V Press E , and then E to enable VTX Mode.
Page 31: Vortex Ef2280 Examples
VTX 1000 OUND TATION 1. Press the P . You should hear a dial tone in the room if the interface module is HONE UTTON connected to a analog telephone line. 2. Dial a telephone number via the Keypad. 3. If the far end has also has a SoundStation VTX 1000, you will connect in wideband mode. 4.
Page 32: Mics, 4 Loudspeakers
This example illustrates a 23 ft. X 17 ft. X 10 ft. conference room that has 8 tabletop microphones and 4 ceiling loudspeakers. The system includes a Vortex EF2280 matrix mixer, a video codec, a program audio source, and the SoundStation VTX 1000. There is no sound reinforcement in this room.
Page 34: System Layout
YSTEM AYOUT The audio components for the room are 8 tabletop microphones, 1 Vortex EF2280, 1 video codec, 1 program audio source, 1 SoundStation VTX 1000, and 4 ceiling loudspeakers. The interface module will use Input B / Output B. The video codec will use Input A / Output A. The program audio will use Inputs C and D. The amplifier will use Output C and a subwoofer will use Output D.
Page 36: Conference Composer Layout
ONFERENCE OMPOSER AYOUT Most of the default parameters of the Vortex EF2280 will satisfy our design. However, we will need to change the Mic/Line Inputs, Matrix Mixer, Output Filters, Outputs, and Presets to satisfy our design goals. Mic/Line Inputs The VTX Mode Option for Input B needs to be selected so that the SoundStation VTX 1000 can make...
Page 37: Matrix Mixer
The Interface Module (Input B) needs to be assigned to all outputs except Output B. If Input B is assigned to Output B, then you will create a loopback inside the Vortex EF2280. This will cause the far end of the SoundStation VTX 1000 to hear an "echo"...
Page 38: Output Filters
Output Filters...
Page 39 Since we have the SoundStation VTX 1000's subwoofer in the system design, we need to use filters to direct the energy of the incoming signal to the appropriate loudspeakers. Since the subwoofer is designed to handle low frequency energy, a Linkwitz-Riley low pass filter has been assigned to Output D. The cutoff frequency is 250 Hertz, meaning that above that frequency, the signal will be attenuated at a rate of 12 dB / octave.
Page 40: Outputs
the signal will be attenuated at a rate of 12 dB / octave. Outputs The VTX Mode Option for Output B needs to be selected so that the SoundStation VTX 1000 can make wideband audio calls.
Page 41: Presets
Presets In order to permanently save the settings to the Vortex 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. We've also RESET...
Page 42: Mics, 8 Loudspeakers, 4 Zones Sound Reinforcement
the P to reflect the proper Preset that you want the unit to power up to if the unit loses AC OWER ON RESET power. 12 M , 8 L , 4 Z OUDSPEAKERS ONES OUND...
Page 43: Introduction / Room Layout
The system includes a Vortex EF2280 matrix mixer, a Vortex EF2241 matrix mixer / telephone hybrid, a video codec, the SoundStation VTX 1000, and a program audio source. We want both Vortex devices to function as one automixer so as to allow only four microphones to gate on at any one time.
Page 45: System Layout
Inputs B and C of the Vortex EF2280. The Interface Module for the SoundStation VTX 1000 will use Input B / Output B of the Vortex EF2241 and the subwoofer will use Output D of the Vortex EF2241.
Page 47: Conference Composer Layout Vortex Ef2241
Options One of our design goals was to have the Vortex EF2241 automatically hang up if the unit detected a drop in loop current or a call progress tone such as a busy signal. To achieve that goal, the A...
Page 48: Automixer
Automixer One of our design requirements was to make each Vortex device operate as one 12-channel automixer in order to limit the maximum number of open microphones to 4 across both units. In order to achieve that, we need to set the G NOM to 4 on both linked units.
Page 49: Efbus
Since the Vortex EF2280 uses the W and Y buses to send microphone, codec, and program audio to the Vortex EF2241 and the ID of the Vortex EF2280 is 00, the audio signals WB0 and YB0 need to be routed to Inputs WM0 and YM0 of the Vortex EF2280.
Page 51: Matrix Mixer
T will satisfy our design goals. The outputs P, W, X, Y, and Z are signals that will be sent over the EFBus to the Vortex EF2280. See the section entitled Conference Composer Layout Vortex EF2280 to find out how to take those signals from the bus and send them to the loudspeakers and video codec.
Page 53: Output Filters
Output Filters Since we have the SoundStation VTX 1000's subwoofer in the system design, we need to use filters to direct the energy of the incoming signal to the appropriate loudspeakers. Since the subwoofer is designed to handle low frequency energy, a Linkwitz-Riley low pass filter has been assigned to Output D. The cutoff frequency is 250 Hertz, meaning that above that frequency, the signal will be attenuated at a rate of 12 dB / octave.
Page 54: Presets
The VTX Mode Option for Output B needs to be selected so that the SoundStation VTX 1000 can make wideband audio calls. Presets...
Page 55: Conference Composer Layout Vortex Ef2280
In order to permanently save the settings to the Vortex EF2241, 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. We've also RESET renamed U 16 to C .
Page 56: Automixer
Since the Vortex EF2241 uses the P Bus to send telephone and SoundStation VTX 1000 audio to the Vortex EF2280 and the ID of the Vortex EF2241 is 01, the audio signal PB1 needs to be routed to Input PM0 of the Vortex EF2280.
Page 57: Matrix Mixer
W, X, Y, and Z buses, the Vortex EF2280 assigns that audio to one of three mixes for the W, X, Y, and Z Buses: WM0, WM1, WM2, XM0, XM1, XM2, YM0, YM1, YM2, ZM0, ZM1, or ZM2 where the "M" stands for mix.
Page 58 The outputs W and Y are signals that will be sent over the EFBus to the Vortex EF2241. See the section entitled Conference Composer Layout Vortex EF2241 to find out how to take those signals from the bus and send them to the telephone line and the interface module.
Page 60: Output Filters
The ceiling loudspeakers may not be able to reproduce low frequency energy. Since the subwoofer that is connected to the Vortex EF2241 handles that function, we will remove low frequency energy from the ceiling loudspeakers via a Linkwitz-Riley high pass filter has been assigned to Outputs 1, 2, 3, and 4. The cutoff frequency is 250 Hertz, meaning that below that frequency, the signal will be attenuated at a rate of 12 dB / octave.
Page 61: Presets
Presets In order to permanently save the settings to the Vortex 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. We've also RESET...
Page 62: Mics, 8 Loudspeakers, 2 Zones Sound Reinforcement
SoundStation VTX 1000. There are 2 zones of sound reinforcement in this room. We want both Vortex devices to function as one automixer so as to allow only four microphones to gate on at any one time.
Page 64: System Layout
Microphones 1-8 will be connected to Vortex EF2280 ID 00 and microphones 9-16 will be connected to Vortex EF2280 ID 01. The interface module will use Input B / Output B. The video codec will use Input A / Output A. The program audio will use Inputs C and D. The amplifier will use Outputs 1 and 2 and the subwoofer will use Output D.
Page 66: Conference Composer Layout Vortex Ef2280 Id 00
OMPOSER AYOUT ORTEX Some of the default parameters of the Vortex EF2280 will satisfy our design. However, we will have to change the Mic/Line Inputs, Automixer, EFBus, Matrix Mixer, Output Filters, Outputs, and Presets to satisfy our design goals. Mic/Line Inputs The VTX Mode Option for Input B needs to be selected so that the SoundStation VTX 1000 can make wideband audio calls.
Page 67: Automixer
Each Vortex EF2280 can place 4 different signals on the bus (W, X, Y, and Z), but each Vortex EF2280 can retrieve signals from any of the P, W, X, Y, or Z buses; thus, there are 5 sub-matrices to allow flexibility in how the signals from other devices get mixed together and get presented to the main matrix.
Page 68 Let's look at the 8 signals WB0-WB7 in the above screenshot. These signals are from 7 other Vortex devices. In this example, the Vortex EF2280 has a device ID of 00. As a result, the WB0 column is grayed out because the EF Bus does an automatic mix-minus so that one cannot create a loopback on the EF Bus.
Page 69: Matrix Mixer
Mics 15-16 have been placed on the Z Bus. In order to remove those signals from the EFBus so that we can send them to the outputs of Vortex EF2280 ID 00, we need to assign the WB1, XB1, YB1, and ZB1 signals to one of the three mix signals that are available per each W, X, Y, or Z bus channel (Before we go further, remember that the "1"...
Page 70 We will set Output D to -30 dB in order to protect the subwoofer from "bottoming out" on high-amplitude transient sounds. The output R1 is our Acoustic Echo Canceller (AEC) reference signal. This signal is what the internal AEC uses to remove from the local microphones. In our example, we will remove the codec, telephone, SoundStation VTX 1000, and program audio from the local microphones.
Page 72: Output Filters
Output Filters Since we have the SoundStation VTX 1000's subwoofer in the system design, we need to use filters to direct the energy of the incoming signal to the appropriate loudspeakers. Since the subwoofer is designed to handle low frequency energy, a Linkwitz-Riley low pass filter has been assigned to Output D. The cutoff frequency is 250 Hertz, meaning that above that frequency, the signal will be attenuated at a rate of 12 dB / octave.
Page 73 The ceiling loudspeakers may not be able to reproduce low frequency energy. Since the subwoofer handles that job, we will remove low frequency energy from the ceiling loudspeakers via a Linkwitz-Riley high pass filter has been assigned to Outputs 1 and 2. The cutoff frequency is 250 Hertz, meaning that below that frequency, the signal will be attenuated at a rate of 12 dB / octave.
Page 74: Outputs
Outputs The VTX Mode Option for Output B needs to be selected so that the SoundStation VTX 1000 can make wideband audio calls.
Page 75: Presets
Presets In order to permanently save the settings to the Vortex 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. We've also RESET...
Page 76: Automixer
Note that the AEC for each Input 1-8 has been set to Bus. This signal is generated from the R1 mix of Vortex EF2280 ID 00 and Vortex EF2280 ID 01 is using this signal from the EFBus as its echo canceller...
Page 77: Presets
Presets In order to permanently save the settings to the Vortex 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. We've also RESET...
Page 78: Conference Composer Layout Vortex Ef2201
Preset that you want the unit to power up to if the unit loses AC OWER ON RESET power. EF2201 ONFERENCE OMPOSER AYOUT ORTEX Most of the default parameters of the Vortex EF2201's will satisfy our design. We will have to change the...
Page 79: Options
Options One of our design goals was to have the Vortex EF2201 automatically hang up if the unit detected a drop in loop current or a call progress tone such as a busy signal. To achieve that goal, the A...
Page 80 The Vortex EF2201 can place 1 signal on the bus (P) but can retrieve signals from any of the P (except ID 00), W, X, Y, or Z buses; thus, there are 5 sub-matrices to allow flexibility in how the signals from other devices get mixed together and are presented to the main matrix.
Page 81: Matrix Mixer
ID of the Vortex EF2201 is 00. As a result, the PB0 cross-points are grayed out. Since the Vortex EF2201 does not transmit on the W, X, Y, or Z busses, there are no grayed out cross- points. Let's look at the 8 signals WB0-WB7. These signals are from 8 other Vortex devices. The WB0- WB7 inputs can be assigned to one of the three submixes that are available for each bus channel.
Page 82: Presets
Each group of microphones, the codec, and the interface module are sent at 0 dB to Output T. The Program Audio signals are attenuated by 10 dB and then sent to Output T. This is done so that the local and codec speech are "biased"...
Page 83 In order to permanently save the settings to the Vortex EF2201, you must use a User Preset. Here, we've used Preset 16, although you may use any of the User Presets 16-47 to accomplish this task. We've also renamed User Preset 16 to Classroom. Once the User Preset has been saved, you must also change the Power on Preset to reflect the proper Preset that you want the unit to power up to if the unit loses AC power.
Page 84: Vortex Ef2241 Examples
, 8 L , 4 Z OUDSPEAKERS ONES OUND EINFORCEMENT See the section entitled “12 Mics, 8 Loudspeakers, 4 Zones Sound Reinforcement” in the Vortex EF2280 Examples section. , 2 L OUDSPEAKERS NTRODUCTION AYOUT This example illustrates a 15 ft. X 15 ft. X 10 ft. conference room that has 4 tabletop microphones and 2 ceiling loudspeakers.
Page 86: System Layout
YSTEM AYOUT The audio components for the room are 4 tabletop microphones, 1 Vortex EF2241, 1 video codec, 1 program audio source, 1 SoundStation VTX 1000, and 2 ceiling loudspeakers. The loudspeakers are wired in parallel to match the load requirements of the loudspeaker output of the Vortex EF2241 (4-8 ohms). Since the loudspeakers have an impedance of 8 ohms each, we can wire them in parallel and then the impedance of both loudspeakers will be 4 ohms.
Page 88: Conference Composer Layout
Options One of our design goals was to have the Vortex EF2241 automatically hang up if the unit detected a drop in loop current or a call progress tone such as a busy signal. To achieve that goal, the A...
Page 89: Mic/Line Inputs
The Interface Module (Input B) needs to be assigned to all outputs except Output B. If Input B is assigned to Output B, then you will create a loopback inside the Vortex EF2241. This will cause the far end of the SoundStation VTX 1000 to hear an "echo"...
Page 90: Output Filters
Inputs C and D are attenuated by 3 dB to Outputs D, Y, and R1 because if the left and right channels are mono, both channels will increase 6 dB in gain . Inputs C and D are reduced by 10 dB to Output B and T because if a program source is mixed at 0 dB with local speech, it may be difficult for the remote person on the telephone to distinguish between the program audio and the local speech due to the frequency limitations of the telephone network.
Page 91 Since we have the SoundStation VTX 1000's subwoofer in the system design, we need to use filters to direct the energy of the incoming signal to the appropriate loudspeakers. Since the subwoofer is designed to handle low frequency energy, a Linkwitz-Riley low pass filter has been assigned to Output D. The cutoff frequency is 250 Hertz, meaning that above that frequency, the signal will be attenuated at a rate of 12 dB / octave.
Page 92: Outputs
the signal will be attenuated at a rate of 12 dB / octave. Outputs The VTX Mode Option for Output B needs to be selected so that the SoundStation VTX 1000 can make...
Page 93: Presets
Presets In order to permanently save the settings to the Vortex EF2241, 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. We've also...
Page 94: Appendix A: Interface Module
renamed U 16 to C . Once the User Preset has been saved, you must also change RESET ONFERENCE the P to reflect the proper Preset that you want the unit to power up to if the unit loses AC OWER ON RESET power.
Page 95: Overview
VERVIEW Here is a drawing of all the connectors on the SoundStation VTX 1000 Interface Module. IRING ECOMMENDATIONS IMITATIONS The maximum length of the cable that connects the SoundStation VTX 1000 console and the Interface Module is 25 feet (This is the length of cable that is shipped with the SoundStation VTX 1000). If the...
Page 96 RCA cables to connect the Vortex to the Auxiliary Input and Output jacks on the Interface Module are not long enough, we recommend using a audio transformer to interface between the two devices. The audio transformer will help prevent ground loops that may form over the earth ground if two devices are connected to wall outlets that are separated from each other (i.e.
Page 98: Appendix B: Soundstation Vtx 1000 User Controls / Lcd Layout
B: S VTX 1000 U PPENDIX OUND TATION / LCD L ONTROLS AYOUT Here is a drawing of the User Controls and the LCD screen layout of the SoundStation VTX 1000:...
Page 99: Appendix C: Vortex Input Wiring
Connect the Positive conductor of the Vortex device to Pin 2 of the XLR connector, the Negative conductor of the Vortex device to Pin 3 of the XLR connector, and the Shield of the Vortex device to the Pin 1 of the XLR connector.
Page 100: Appendix D: Vortex Output Wiring
The above diagram illustrates the use of an XLR connector. Connect the Positive conductor of the Vortex device to Pin 2 of the XLR connector, the Negative conductor of the Vortex device to Pin 3 of the XLR connector, and the Shield of the cable to the only to the Vortex device.
Page 101: Appendix E: Vortex Internal Amplifier Wiring
E: V PPENDIX ORTEX NTERNAL MPLIFIER IRING OUDSPEAKERS ONNECTED IN ARALLEL Here, two loudspeakers labeled R1 and R2 are connected in parallel to Output L. The total resistance of both loudspeakers is 4 ohms. This load is acceptable as it meets the minimum load requirement of the amplifier.
Page 102: Three 8 Ohm Loudspeakers Connected In Parallel
HREE OUDSPEAKERS ONNECTED IN ARALLEL Here, three loudspeakers labeled R1, R2, and R3 are connected in parallel to Output L. The total resistance of all three loudspeakers is 2.67 ohms. This load is unacceptable as it exceeds the minimum load requirement of the amplifier.
Page 103: Technical Support
Copyright © 2004 Polycom, Inc. Polycom, the Polycom logo, Vortex, SoundStation, and SoundStation Premier are registered trademarks and VoiceStation and SoundStation VTX 1000 are trademarks of Polycom, Inc. in the USA and various countries. All other brand names, product names, and trademarks are the sole...

Vortex SoundStation VTX 1000 Application Note

Table of Contents

Introduction

Summary

System Overview

System Setup Directions

1 Connecting a Microphone to a Vortex Device

2 Connecting a Loudspeaker to a Vortex Device

3 Connecting the Soundstation Vtx 1000 to a Vortex Device

4 Connecting a Subwoofer to a Vortex Device

5 Connecting the Telephone Line to the Soundstation Vtx 1000 and a Vortex Device

6 ) Verifying the Proper Firmware in the Soundstation Vtx 1000 and the Vortex

Device

7 Configuring the Soundstation Vtx 1000

8 Connecting Other Sources to a Vortex Device

9 Setting the Gain of the Vortex Device

10 Enable Vtx Mode in the Vortex Device

11 Making a Test Call with Soundstation Vtx 1000

Vortex Ef2280 Examples

Vortex Ef2241 Examples

Appendix A: Interface Module

Appendix B: Soundstation Vtx 1000 User Controls / Lcd Layout

Appendix C: Vortex Input Wiring

Appendix D: Vortex Output Wiring

Appendix E: Vortex Internal Amplifier Wiring

Technical Support

Quick Links

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Summary of Contents for Vortex SoundStation VTX 1000

Table of Contents