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Installation

 

We know that you’re probably in a hurry to get on the air with your new AirAura. If 
you have little technical expertise with audio processor fundamentals, the 
following pages will get you up and running as quickly as possible without having 
to know a lot of 

techie

 stuff. 

 
If during installation or setup you find that you need assistance or advice, please 
feel free to contact our technical support folks at (252) 638-7000 or write to 

[email protected]

. 

 
The image below (colors reversed to save on laser printer toner!) shows the rear 
panel of the AirAura and the location of the various connectors associated with 
an installation: 

AirAura Rear Panel Connections 

 

AirAura’s rear panel connectors from left to right are: 
 

Bottom 

Row 

     Top 

Row 

Analog Left channel In 

 

 

 

SCA-1 Input 

Analog 

Right 

Channel 

In 

   SCA-2 

Input 

Analog Left Channel Out   

 

 

TX-1 Out 

Analog 

Right 

Channel 

Out 

   TX-2 

Out 

HD Analog Left Channel Out 

 

 

WiFi Antenna 1 

HD Analog Right Channel Out 

 

 

WiFi Antenna 2 

AES 

Digital 

Input 

    GPO 

Output 

FM AES Digital Out 
HD AES Digital Out 
GPI Input 
Ethernet 1 
Ethernet 2 
AC Power Input 

 

8

Содержание AirAura

Страница 1: ...Digital Spectral Processor Quick Start Guide and Short Form Manual First Printing May 2010 600 Industrial Drive New Bern North Carolina USA 28562...

Страница 2: ...This Page Intentionally Left Blank 3...

Страница 3: ...nalog Audio Connections 10 Digital Audio Connections 10 Where to install AirAura 11 Analog Left Right STL 11 Composite Analog STL 11 Analog phone lines 12 Digital STL 12 EAS US Emergency Alert System...

Страница 4: ...udness 23 Using the Front Panel GUI to Adjust HD Sound 23 AGC Depth 22 Compression 22 Density 24 Low Warm Equalization 24 Mid High Equalization 24 HD Loudness 25 Saving a Preset 25 Preset Scheduler Ev...

Страница 5: ...put Menu 33 Analog Output Type 33 FM Digital Output 33 De Emphasis 33 Pre Delay 33 HD Digital Output 33 Phase Reverse 33 Left Right Reverse 33 Diversity Delay 33 Special Analog Output Mode Note 34 Ste...

Страница 6: ...38 FM Output 38 Headphone Volume Control 38 Status Indicators 39 Temp 39 Analog 39 AES 39 Remote Login 39 Setting System Time 40 Accessing Menu Options 40 View 40 Input 40 Output 40 St Encoder 40 Pre...

Страница 7: ...Plot Introduction 41 SDR Introduction 41 A Clip Introduction 41 Using and interpreting the FFT 42 Using the O Scope 42 Using and interpreting the E vs F Display 42 Using and interpreting the 3 D Plot...

Страница 8: ...ing the Configuration Appendix B Default Wireless Ethernet Configuration Changing the Configuration Appendix C General Specifications Appendix D Wireless Module Configuration Approvals and Miscellaneo...

Страница 9: ...tweaked up our Vorsis Bass Management System algorithm creating VBMS II and also improved our well regarded Sweet Spot Technology SST VBMS II effortlessly reveals and controls very deep and natural b...

Страница 10: ...r and easy to use user interfaces he guides the Vorsis team as they design new and revolutionary audio processing products All of the design manufacturing and testing of Vorsis audio processing produc...

Страница 11: ...rich and full with no hint of unnatural coloration or distortion Transitions between various program elements are deftly handled with no trace of processing while corrections are being made Further in...

Страница 12: ...a smart look ahead final limiter with adjustable operating parameters that allow program density and peak control to be adjusted as desired The HD path s digital and analog outputs may be swapped left...

Страница 13: ...techsupport vorsis com The image below colors reversed to save on laser printer toner shows the rear panel of the AirAura and the location of the various connectors associated with an installation Ai...

Страница 14: ...rated fan in the unlikely event it should occur will not compromise the operation of the AirAura as long as AirAura is being operated in a reasonable environment below 104F or 40C AirAura may be mount...

Страница 15: ...eld is used recommended connect it to the AirAura end only XLR pin 1 to prevent ground loops Digital Audio Connections For digital audio connections always use a good quality digital audio cable with...

Страница 16: ...tereo multiplex input The exciter s AES3 digital input may be clean but it also precludes the ability to gain additional loudness through the use of AirAura s intelligent oversampled composite clippin...

Страница 17: ...ura which will create a modulation loudness disadvantage AirAura can also be installed at the studio end of a compressed STL with at least two caveats The stereo generator and composite clipper in Air...

Страница 18: ...ion it is recommended that the EAS encoder be placed after the processing If the EAS unit needs to be installed prior to AirAura and AirAura is operated aggressively AirAura may need to be configured...

Страница 19: ...a UPS uninterruptible power supply is usually recommended and will protect AirAura from short duration power interruptions which may otherwise signal it to reboot when it sees the power glitch When th...

Страница 20: ...ilover from analog to AES3 is based on the same silence sense algorithm responding to audio below 48dBFS for more than 30 seconds Audio Outputs FM Audio Outputs Output audio for the FM path is availab...

Страница 21: ...ilable in the wireless interface configuration to allow password protection if desired Because AirAura doesn t contain anything that would be a desirable hacking target we configure the interface with...

Страница 22: ...selected after an aggressive preset has been in use the audio output will be lower at first until the new parameters settle in Also to avoid clicks and pops when presets are changed the preset paramet...

Страница 23: ...number of presets on AirAura hardware cannot exceed eighty 80 The storage space for presets on the GUI s host PC because of a preset s tiny file size is virtually unlimited User presets may be locked...

Страница 24: ...90V AC DC to 260V AC DC 50 or 60Hz if AC Power consumption is 64VA Connect the Analog or Digital audio inputs as appropriate for your installation Click on the Input Menu tab on the front panel GUI a...

Страница 25: ...o set the correct Left and Right output level If using the AES Digital Outputs connect it them to the equipment following the AirAura and adjust the AES Output level control in the Output Menu as appr...

Страница 26: ...n ONLY be utilized for a format with a similar name Please feel free to experiment and try each preset we provide to see how it sounds on your station and in your market Remember also that the AirAura...

Страница 27: ...n of the controls The following is an explanation of what each of the FM Sound controls do keeping in mind that AGC Depth and Compression are shared for the FM and HD processing chains FM AGC Depth Th...

Страница 28: ...ways similar to how the Low Warm EQ acts when adjusted When the control is set at 0 and has not been touched since a preset was taken the factory equalization is applied As the control is turned count...

Страница 29: ...alization opens up As the control is turned counterclockwise toward smaller numbers the bass takes on a deep robust character while the mud that would normally occur with such equalization especially...

Страница 30: ...ouder The opposite occurs when the control is adjusted counterclockwise away from 5 Saving a Preset The Preset screen is equipped with a QWERTY keyboard for entering preset names when they are to be s...

Страница 31: ...oliday preset at a certain time on December 24 Like the short term scheduler the long term scheduler needs an additional entry to allow it to return to the daily preset rotation schedule The graphic b...

Страница 32: ...s pre configured factory default Ethernet Configuration is as follows Front Panel IP Address 192 168 1 201 Hardware IP Address 192 168 1 200 Subnet Mask 255 255 255 0 Gateway 192 168 1 1 Wireless Add...

Страница 33: ...AirAura s Front Panel Network Settings Next using the same sequence as above enter a new GUI IP address by adding 1 to the IP address that you entered for the hardware in the above step Example If yo...

Страница 34: ...g A reminder When the Preset name is shown in green it represents a preset factory or user that has been recalled and no changes have been made to it If the Preset name is scrolling in red it means th...

Страница 35: ...Devices button Click the Add button and the Add Device dialog will open Enter a name for AirAura like AirAura Wireless Enter the IP address 192 168 2 100 Factory default and click OK Highlight the new...

Страница 36: ...be controlled but no metering or analysis graphics will be displayed If this happens navigate to the GUI s System screen and check the box labeled Metering Data over TCP IP and the issue should be sol...

Страница 37: ...lights if there is a signal present at the analog input that exceeds 48dBFS The AES indicator lights if there is a valid AES signal present at the digital input above 48dBFS Automatic Input Failover...

Страница 38: ...he analog and AES EBU digital inputs Pre Emphasis FM Pre emphasis may be set to Off 50uS or 75uS as required by the country where AirAura will be operated OUTPUT MENU This is the second tab on the top...

Страница 39: ...TX level controls in the Encoder screen will vanish All controls can be adjusted with AirAura s front panel track pad STEREO ENCODER MENU AirAura contains a mathematically perfect stereo encoder whos...

Страница 40: ...lot amplitude and is adjustable from 0 Off to make the station transmit in Mono to 20 of the main composite signal amplitude in 0 1 steps SCA 1 and SCA 2 Inputs Inputs such as SCA or RDS are applied t...

Страница 41: ...ks and pops when the new preset s parameters are being loaded Saving a Preset The Preset screen is equipped with a QWERTY keyboard for entering preset names when they are to be saved For capital lette...

Страница 42: ...dvantage when the need arises to change one or more system settings without affecting others What this means is that processing presets can be used to adjust system parameters when desired An example...

Страница 43: ...air HD Output Listens to the output of the entire HD processing chain FM PreDelay Listens to the output of the FM processing chain prior to the FM diversity delay FM Output Listens to the output of th...

Страница 44: ...ssword then a dialog box will pop up asking the user to enter the correct password Until the login password can be verified AirAura will not send any of its current settings to the remote GUI nor acce...

Страница 45: ...reen visible Output Makes the Output menu screen visible St Encoder Makes the Stereo Encoder screen visible Presets Makes the Preset management screen visible System Makes the System screen visible So...

Страница 46: ...processing paths after processing The FM display includes any pre emphasis being used in order to present an accurate view of the signal actually being sent to the transmitter by AirAura O Scope displ...

Страница 47: ...time domain display of the audio waveforms exiting the output of the FM and HD final peak control sections The FM o scope display will reveal what the pre emphasized and clipped audio looks like The H...

Страница 48: ...o spectrum We made the SDR meter very easy to interpret the longer the blue bars the more dynamic range there is between the peak amplitude and its RMS loudness level inside each of the 31 limiter ban...

Страница 49: ...s if the Main DSP board has been assigned an IP address of 109 16 77 200 then the front panel must also have an IP address assigned to it that is in the range between 109 16 77 1 and 109 16 77 254 in...

Страница 50: ...ss field Then using the numeric keys enter the new Hardware IP Address Use the same procedure to reset the Subnet Mask and Gateway settings to those appropriate for your network Once this has been don...

Страница 51: ...esses on each side of the interface be different so that it knows what data to forward to which port If you ve been remembering what you ve previously read in this document you ve probably also notice...

Страница 52: ...ity Disabled WLAN DHCP Disabled WLAN Static IP Address 192 168 2 100 WLAN Subnet Mask 255 255 255 0 WLAN Gateway Address 192 168 2 110 Ethernet DHCP Disabled Ethernet Static IP Address 192 168 1 200 E...

Страница 53: ...address it s the IP address to which packets received on the wireless side are forwarded to Also the Gateway address of the module s wired side is the IP address that a web browser should be pointed...

Страница 54: ...to select it When the configuration page loads select the item called Network Settings in the left column Also unless security or the operational region needs to be changed we are only concerned with...

Страница 55: ...ade scroll down to the bottom of the Network Settings page and click on the Commit button Then in order for the new data to be active the module requires a reboot You can either reboot the AirAura its...

Страница 56: ...Per AES3 2003 assuming maximum allowable output signal amplitude of 2V and minimum allowable input signal amplitude of 200mV AES Receiver CS8416 192kHz 24 bits Phase Rotator Filter Type 4th Order All...

Страница 57: ...be operated in combination with distortion cancelled clipper FM Digital Output AES 3 pin XLR digital De emphasis Complementary as applied in pre emphasis Pre or post diversity delay AES Transmitter CS...

Страница 58: ...92kHz 24 bits Stereo Encoder Type DSP based Ultra linear DSBSC Multiplier Stereo Width Limiter 10 to 100 in 10 steps plus off Stereo Pilot Injection 0 20 0 1 steps Stereo Pilot Stability Better than 1...

Страница 59: ...anced XLR 24dBu maximum Connectors 3 pin XLR 2 Ethernet Interface 100BaseT Auto MDIX Connectors Two rear panel RJ 45 female Wireless Interface Quatech WLNG ET DP501 Antennas Two Diversity receive Oper...

Страница 60: ...rborne_ethernet_modules php The wireless module is type approved in the US Canada and Europe with certification pending in Japan as of this writing To comply with the regulations dealing with embedded...

Страница 61: ...able The listed Data Rate is the supported connection rate for the wireless link including handshaking Because handshaking to ensure reliable communications utilizes a small portion of the stated data...

Страница 62: ...ennas are required to have a VSWR of 2 1 maximum referenced to a 50 system impedance The antennas supplied with AirAura have been certified for use with the wireless module Performance Wireless perfor...

Страница 63: ...circuitry GPI Input Number DB 9 Connector Pin Number One Pin 6 Two Pin 2 Three Pin 7 Four Pin 3 Five Pin 8 Six Pin 4 Seven Pin 9 Eight Pin 5 Common Return Pin 1 The GPI input circuits are optoisolate...

Страница 64: ...lliamps forward current through the optoisolator s internal LED Applied Voltage to GPI External Resistance 3 3 Volts None 5 0 Volts 330 Ohms 6 0 Volts 470 Ohms 7 5 Volts 820 Ohms 10 Volts 1 3 k Ohms 1...

Страница 65: ...lated return circuits that is unlike the GPI port they do not share a common return Because of this each GPO may be used in any way the end user chooses without regard to cross coupling between unrela...

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