AirAura X1 FM & HD DIGITAL AUDIO PROCESSOR TECHNICAL MANUAL 600 Industrial Drive, New Bern, North Carolina 28562 (tel 252-638-7000 / fax 252-637-1285 ) AirAura X1 FM & HD DIGITAL AUDIO PROCESSOR TECHNICAL MANUAL Wheatstone Corporation December 2016 WHEATSTONE AUDIO PROCESSING AirAura X1 FM & HD Digital Audio Processor Technical Manual ©2016 Wheatstone Corporation 600 Industrial Drive New Bern, North Carolina 28562 tel 252-638-7000 / fax 252-637-1285 AirAura X1 / Dec 2016 CONTENTS AirAura X1 Technical Manual Table of Contents Chapter 1 - General Information Introduction ....................................................................................1-2 X1 Feature Overview .....................................................................1-3 Rack Mounting ...............................................................................1-4 X1 Installation Tips .....................................................................................................1-5 Grounding ................................................................................................................1-5 Surge Protection ......................................................................................................1-5 UPS/Power Conditioning ........................................................................................1-5 Analog Audio Input Connections.............................................................................1-5 Analog Audio Output Connections ..........................................................................1-6 Digital Audio Connections .......................................................................................1-6 Where to Install X1 .....................................................................................................1-7 Digital STL ...............................................................................................................1-7 Analog Left/Right STL .............................................................................................1-8 Composite Analog STL ...........................................................................................1-8 Analog Phone Lines ................................................................................................1-9 Arbitron People Meter (PPM)™ ...............................................................................1-9 AC Power Considerations .............................................................1-9 Rear Panel Connections ..............................................................1-10 Audio Inputs ..............................................................................................................1-11 Analog In ................................................................................................................1-11 AES In .....................................................................................................................1-11 SCA In ....................................................................................................................1-11 Audio Outputs ...........................................................................................................1-11 FM Path ..................................................................................................................1-11 HD Path ..................................................................................................................1-12 Insert Loop Out ......................................................................................................1-12 Insert Loop IN .........................................................................................................1-12 FM/HD Analog Out .................................................................................................1-12 FM AES / baseband192 Out ..................................................................................1-12 HD AES Out ............................................................................................................1-12 TX Out ....................................................................................................................1-12 Headphone Monitoring ..............................................................................................1-12 Network Connections ................................................................................................1-13 Ethernet ..................................................................................................................1-13 Typical Straight-Through Cable Cable ...................................................................1-13 Typical Crossover Cable .........................................................................................1-13 General Purpose Interface (GPI/GPO) .......................................................................1-14 GPI ..........................................................................................................................1-14 GPO ........................................................................................................................1-14 Starting With a Preset ............................................................................................1-15 Processing Presets .................................................................................................1-15 Analog XLR Connections Pinouts Drawing ...............................................................1-17 Digital XLR Connections Pinouts Drawing ................................................................1-18 BNC Connections Pinouts Drawing ..........................................................................1-19 Ethernet RJ-45/General Purpose Interface DB-9 Pinouts Drawing .........................1-20 AirAura X3 / May 2013 page Contents – 1 CONTENTS Chapter 2 - Front Panel GUI Input Screen ...................................................................................2-3 Input Source ...............................................................................................................2-3 Digital Gain .................................................................................................................2-4 Analog Gain ................................................................................................................2-4 L/R Balance ................................................................................................................2-4 Phase Rotator .............................................................................................................2-4 High Pass Filter ..........................................................................................................2-4 Automatic Failover ......................................................................................................2-5 Insert Loop Option .....................................................................................................2-5 5 Band iACC ...................................................................................2-6 AGC Drive ...................................................................................................................2-6 LF Density ..................................................................................................................2-6 HF Density ..................................................................................................................2-6 Attack Master .............................................................................................................2-7 Release Master ...........................................................................................................2-7 Gate Offset .................................................................................................................2-7 10-Band FM Limiter .......................................................................2-8 MB Limiter Drive .........................................................................................................2-8 Threshold Master .......................................................................................................2-8 Attack Master .............................................................................................................2-9 Release Master ...........................................................................................................2-9 Clip Drive ....................................................................................................................2-9 Pre-Emphasis .............................................................................................................2-9 Where and When to Use Pre-Emphasis and De-Emphasis ...................................2-10 10-Band HD Limiter ......................................................................2-11 MB Limiter Drive ........................................................................................................2-11 Threshold Master ......................................................................................................2-11 Attack Master ............................................................................................................2-12 Release Master ..........................................................................................................2-12 HD Final Limiter ............................................................................2-13 Limiter Drive ..............................................................................................................2-13