Wheatstone Corporation AM-10HD User manual

Digital auDio Processor
AM - 10 hD
Technical
Manual
Wheatstone Corporation
August 2008

AM-10HD / Aug 2008
Ultra-HigH resolUtion Processing
ORSIS
600 Industrial Drive
New Bern, North Carolina 28562
tel [phone] / fax [phone]
AM-10HD Digital Audio Processor Technical Manual - 1st Edition
©2008 Wheatstone Corporation

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AM-10HD / Aug 2008
Attention!
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Federal Communications Commission (FCC) Complianceederal Communications Commission (FCC) Compliance
ederal Communications Commission (FCC) Complianceederal Communications Commission (FCC) Compliance
ederal Communications Commission (FCC) Compliance
Notice:Notice:
Notice:Notice:
Notice:
Radio FRadio F
Radio FRadio F
Radio Frequency Noticerequency Notice
requency Noticerequency Notice
requency Notice
NOTE:NOTE:
NOTE:NOTE:
NOTE: This equipment has been tested and found to comply with the
limits for a Class A digital device, pursuant to Part 15 of the FCC rules. These
limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment.
This equipment generates, uses, and can radiate radio frequency energy
and, if not installed and used in accordance with the instruction manual,
may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in
which case the user will be required to correct the interference at his own
expense.
This is a Class A product. In a domestic environment, thisThis is a Class A product. In a domestic environment, this
This is a Class A product. In a domestic environment, thisThis is a Class A product. In a domestic environment, this
This is a Class A product. In a domestic environment, this
product may cause radio interference, in which case, theproduct may cause radio interference, in which case, the
product may cause radio interference, in which case, theproduct may cause radio interference, in which case, the
product may cause radio interference, in which case, the
user may be required to take appropriate measures.user may be required to take appropriate measures.
user may be required to take appropriate measures.user may be required to take appropriate measures.
user may be required to take appropriate measures.
This equipment must be installed and wired properly in order to assure
compliance with FCC regulations.
Caution!Caution!
Caution!Caution!
Caution! Any modifications not expressly approved in writing byAny modifications not expressly approved in writing by
Any modifications not expressly approved in writing byAny modifications not expressly approved in writing by
Any modifications not expressly approved in writing by
Wheatstone could void the user's authority to operate this equipment.Wheatstone could void the user's authority to operate this equipment.
Wheatstone could void the user's authority to operate this equipment.Wheatstone could void the user's authority to operate this equipment.
Wheatstone could void the user's authority to operate this equipment.

II
II
INTRODUCTIONNTRODUCTION
NTRODUCTIONNTRODUCTION
NTRODUCTION - 1- 1
- 1- 1
- 1
AM-10HD / Aug 2008
MakingAudio Processing History
In 2005 Wheatstone returned to its roots in audio processing with the creation of
Vorsis, a new division of the company. The same year it introduced the model AP-3
DigitalSignalProcessorattheNationalAssociationofBroadcasters(NAB)convention
in Las Vegas.
At the following year’s NAB convention, and with more than 100,000 people in
attendance,VorsisintroducedthemodelHDP3DigitalMultibandSignalProcessorand
the revolutionary model AP-1000 Digital Spectral Processor. The AP-1000 garnered
two coveted industry recognitions: the Radio World “Cool Stuff” award and the BE
Radio “Pick Hit”. With its incredible dual 31-band FM and HD “Fine Grain” limiters
and intuitive graphical user interface the AP-1000 set a completely new performance
standard for high-end broadcast audio processors.
At the 2007 NAB Show Vorsis introduced the FM-5 and AM-5HD processors, as
well as the new and hot-selling M1 Microphone Processor.
Oneyearlateratthe2008NABShow,Vorsisagainsurprisedthebroadcastindustry
with the introduction of five new audio processing products:
AP-2000 and FM-2000: successors to the well-received AP-1000 introduced just
two years earlier, the AP-2000 is targeted for stations needing the power of its dual
31-band FM and HD limiters, while the FM-2000 has all the features of the AP-2000
except the HD signal path.
AM-10HD and FM-10HD: successors to the AM-5HD and extremely popular
FM-5. The AM-10HD and FM-10HD are equipped with dual signal chains for
separately processing the standard analog and HD signals.
VP-8: the first multimode broadcast audio processor with six built-in processing
modes for FM, AM, FM-HD, AM-HD, MP3/AAC>48k, and MP3/AAC<48k. Audio
modesarechanged bysimplyselecting themfromwithin theWindows-basedGUI -no
reboot is required to change from one processing mode to another.
ThesenewVorsisproductsareequippedwithoneormoreofthefollowingexclusive
Vorsis-designed algorithms:
- Vorsis Bass Management System©(VBMS): Finally… clean, deep, low bass
without the distortion that plagues other audio processors. VBMS manages bass by
preventing frequencies that could ‘inter-modulate’ in the main clipper from doing so,
resulting in a dramatically deep low end - and clean midrange - and clean highs –
simultaneously.

page Contents – 1
AM-10HD / Aug 2008
CONTENTS
Chapter 1 – General Information
AM-10HD Technical Manual
Table of Contents
Introduction....................................................................................1-2
Overview.........................................................................................1-4
Rack Mounting...............................................................................1-4
Installation Tips...........................................................................................................1-5
Where to Install the AM-10HD....................................................................................1-6
EAS—United States Emergency Alert System.......................................................1-6
Arbitron People Meter.............................................................................................1-6
Energizing ......................................................................................1-6
I/O Connections.............................................................................1-7
Audio Inputs................................................................................................................1-7
Analog In .................................................................................................................1-7
AES In .....................................................................................................................1-7
Audio Outputs.............................................................................................................1-8
AM Path...................................................................................................................1-8
HD Path...................................................................................................................1-8
Analog Out...............................................................................................................1-8
AES Out...................................................................................................................1-8
Headphones ...............................................................................................................1-8
Network Connection ...................................................................................................1-9
Ethernet RJ-45 ........................................................................................................1-9
Typical Ethernet Cable ............................................................................................1-9
Typical Crossover Cable .........................................................................................1-9
General Purpose Interface (GPI/GPO)......................................................................1-10
GPI .........................................................................................................................1-10
User Presets...........................................................................................................1-11
Example Schematic of General Purpose Inputs.....................................................1-12
GPO........................................................................................................................1-13
Analog XLR Connections Pinouts Drawing ...............................................................1-14
Digital XLR Connections Pinouts Drawing ................................................................1-15
Ethernet RJ-45/GPI DB-9 Pinouts Drawing..............................................................1-16

page Contents – 2
AM-10HD / Aug 2008
CONTENTS
AM-10HD Quick Start Setup Guide ..............................................2-2
Easy Steps to Success...............................................................................................2-3
Install and Connect the AM-10HD..............................................................................2-5
Operating the AM-10HD Locally.................................................................................2-5
Unlocking the Front Panel .....................................................................................2-5
Taking Presets.......................................................................................................2-5
Adjusting the Headphone Level.............................................................................2-6
Operating the AM-10HD Remotely—Installing The GUI Software .............................2-6
Configuring the AM-10HD TCP/IP Address...........................................................2-6
Configuring the AM-10HD .................................................................................2-7
Configuring the GUI...........................................................................................2-8
Additional Notes on AM-10HD GUI Connectivity...................................................2-9
A Known Windows Networking Issue........................................................................2-10
Achieving Your Special On-Air Sound .......................................2-12
First a Few Words About Our Factory Presets..........................................................2-12
What Sound Are You Trying to Achieve?..................................................................2-12
About Bass ................................................................................................................2-13
Is There a Caveat?....................................................................................................2-13
What Is Your Short Term Goal? ................................................................................2-13
How Do I Make It Louder?.........................................................................................2-14
What Is Your Long Term Goal?.................................................................................2-14
Clean and Loud .........................................................................................................2-15
Can I Generate That “Sixties” Compression Sound? ................................................2-16
The AM-10HD Factory Presets ....................................................2-17
Future Presets and Preset Updates ..........................................................................2-17
Architecture of the AM-10HD GUI ................................................3-5
Network Configuration..................................................................3-5
Getting Started...............................................................................3-6
Connecting the AM-10HD and the GUI ........................................3-6
Using a LAN Connection ............................................................................................3-6
Configuring the AM-10HD IP Address....................................................................3-6
Adding Devices.......................................................................................................3-8
Connecting Directly Without a LAN ...........................................................................3-10
PC System Requirements .........................................................................................3-10
Wireless Connection..................................................................................................3-10
The Really Remote Connection!................................................................................3-11
VPN ...........................................................................................................................3-11
The AM-10HD and Internet Security Concerns .........................................................3-11
About DHCP and the AM-10HD ................................................................................3-11
About “Ports” and the AM-10HD................................................................................3-12
Using the AM-10HD GUI...............................................................3-13
Dynamic Displays Region..........................................................................................3-14
Frequency-Domain Graph....................................................................................3-14
AM-10HD Graphical Interface Operation..............................................................3-15
First, a short tutorial..........................................................................................3-16
Chapter 2 – Features and Presets
Chapter 3 – AM-10HD GUI

page Contents – 3
AM-10HD / Aug 2008
CONTENTS
Bargraph Metering................................................................................................3-17
Input Levels / Gain Reduction Meter ................................................................3-18
Output Meter.....................................................................................................3-18
60dB Range......................................................................................................3-18
Display Signal Selection.......................................................................................3-18
Input..................................................................................................................3-18
PreDelay...........................................................................................................3-18
Audio ................................................................................................................3-19
Gain Reduction.................................................................................................3-19
Controls ............................................................................................................3-19
L/R (Left/Right) .................................................................................................3-19
O-Scope ...........................................................................................................3-19
Control Area Region..................................................................................................3-20
Input Menu............................................................................................................3-21
Input Settings....................................................................................................3-21
Input Source .....................................................................................................3-21
Input Signal Presence ......................................................................................3-21
Input Failsafe....................................................................................................3-21
Analog Gain......................................................................................................3-22
AES Gain..........................................................................................................3-22
Balance.............................................................................................................3-22
Phase Rotator...................................................................................................3-22
HPF - High Pass Filter......................................................................................3-23
Why the Sum and Difference High Pass Filter Option?.................................3-23
Parametric Equalizer Menu ..................................................................................3-24
Enable ..............................................................................................................3-25
Automatic Gain Control and Compressor Menu...................................................3-26
Drive ................................................................................................................3-26
Makeup............................................................................................................3-26
AGC/Comp Buttons.........................................................................................3-27
Gated Modes...................................................................................................3-28
Ooze...........................................................................................................3-28
Hold ............................................................................................................3-28
Gate Delay.......................................................................................................3-28
Gate Threshold................................................................................................3-29
Band Coupling.................................................................................................3-29
AGC Backoff....................................................................................................3-30
Crossover Frequencies ...................................................................................3-31
Selecting Crossover Frequencies...............................................................3-31
AGC/Compressor Gain Reduction ..................................................................3-32
HD Output Menu....................................................................................................3-33
Source ..............................................................................................................3-33
Bandwidth.........................................................................................................3-33
HF Protect and HyperMono..............................................................................3-33
HF Protect ..................................................................................................3-34
Ceiling.........................................................................................................3-34
Recovery ....................................................................................................3-34
HyperMono.................................................................................................3-34
Lim/Clip (Limiter/Clipper) Drive ........................................................................3-35
Limiter Enable...................................................................................................3-36
L/R Linked ........................................................................................................3-36
Limiter Thresh...................................................................................................3-36
Attack................................................................................................................3-36

page Contents – 4
AM-10HD / Aug 2008
CONTENTS
Release ............................................................................................................3-36
Delayed Release ..............................................................................................3-37
Clip Style ..........................................................................................................3-37
Phase Reverse.................................................................................................3-37
Left Right Reverse............................................................................................3-37
DeEmphasis .....................................................................................................3-37
Output Level .....................................................................................................3-38
AM Limiters Menu.................................................................................................3-39
10-Band Limiter ................................................................................................3-39
Multiband Enable..............................................................................................3-40
Multiband Drive.................................................................................................3-40
Lim/Clip (Limiter/Clipper) Drive.........................................................................3-40
Multiband Knee.................................................................................................3-40
Multiband Mode................................................................................................3-42
Vorsis Bass Management System (VBMS) ......................................................3-43
VBMS Drive................................................................................................3-43
VBMS Style ................................................................................................3-44
VBMS Output..............................................................................................3-44
VBMS Frequency .......................................................................................3-45
Emphasis Selection..........................................................................................3-45
Look Ahead Limiter...........................................................................................3-46
AM Limiter Controls..........................................................................................3-47
Limiter Enable.............................................................................................3-47
L/R Linked ..................................................................................................3-47
Limiter Thresh.............................................................................................3-47
Attack..........................................................................................................3-47
Release ......................................................................................................3-47
Delayed Release ........................................................................................3-48
Clip Style (Main Clipper).............................................................................3-48
AM Diversity Delay ...........................................................................................3-49
Entering Delay Values................................................................................3-49
10-Band Limiter Dynamics Screens .................................................................3-50
Limiter Threshold Screen ...........................................................................3-50
Clipper Threshold Screen...........................................................................3-51
Attack Time Screen ....................................................................................3-52
Release Time Screen.................................................................................3-53
Final Equalization Screen...........................................................................3-54
AM Transmission Menu........................................................................................3-55
Test Oscillator...................................................................................................3-55
Tilt Test.............................................................................................................3-55
Bandwidth.........................................................................................................3-55
Output Mode.....................................................................................................3-56
Positive Modulation ..........................................................................................3-56
Digital Output....................................................................................................3-57
DeEmphasis ...............................................................................................3-57
PreDelay.....................................................................................................3-57
LF Tilt................................................................................................................3-57
Adjusting the Tilt Corrector.........................................................................3-58
HF Correction ....................................................................................................3-60
System Menu........................................................................................................3-62
System Settings Change With Preset Takes....................................................3-62
Headphone Source...........................................................................................3-63
Headphone Control ..........................................................................................3-64

page Contents – 5
AM-10HD / Aug 2008
CONTENTS
Remote Login ...................................................................................................3-65
Front Panel.......................................................................................................3-65
GUI Access.......................................................................................................3-66
GUI Lock...........................................................................................................3-66
Indicators/Temperature Readout......................................................................3-67
Skin...................................................................................................................3-68
Events...............................................................................................................3-69
Creating a Weekly Rotation Event..............................................................3-70
Creating a Long Term Rotation Event........................................................3-70
Deleting a Scheduled Event .......................................................................3-71
Set Time ...........................................................................................................3-71
Side Bar Region ........................................................................................................3-72
Presets .................................................................................................................3-72
Save .....................................................................................................................3-72
Library...................................................................................................................3-73
Locking Presets................................................................................................3-74
Devices.................................................................................................................3-75
Quick Save (QSave).............................................................................................3-75
Title Bar Region.........................................................................................................3-77
Status ...................................................................................................................3-77
Devices.................................................................................................................3-77
Presets .................................................................................................................3-78
Notes on “Online” and “Offline” working ...............................................................3-78
Accessing Menu Options...........................................................................................3-79
File Menu Items....................................................................................................3-79
Hardware Menu Items ..........................................................................................3-79
AM-10HD Hardware Update.............................................................................3-80
Presets Menu Items..............................................................................................3-81
AM-10HD Signal Flow Diagram ....................................................4-2
Audio Processor (AM-10HD)
Schematic...................................................................................................................4-3
Load Sheet .................................................................................................................4-8
Parameters, Units, and Ranges....................................................A-2
Appendix
Chapter 4 – Schematic and Load Sheet Drawings

page 1 – 1
AM-10HD / Aug 2008
GENERAL INFORMATION
Chapter Contents
General Information
Introduction....................................................................................1-2
Overview.........................................................................................1-4
Rack Mounting...............................................................................1-4
Installation Tips...........................................................................................................1-5
Where to Install the AM-10HD....................................................................................1-6
EAS—United States Emergency Alert System.......................................................1-6
Arbitron People Meter.............................................................................................1-6
Energizing ......................................................................................1-6
I/O Connections.............................................................................1-7
Audio Inputs................................................................................................................1-7
Analog In .................................................................................................................1-7
AES In .....................................................................................................................1-7
Audio Outputs.............................................................................................................1-8
AM Path...................................................................................................................1-8
HD Path...................................................................................................................1-8
Analog Out...............................................................................................................1-8
AES Out...................................................................................................................1-8
Headphones ...............................................................................................................1-8
Network Connection ...................................................................................................1-9
Ethernet RJ-45 ........................................................................................................1-9
Typical Ethernet Cable ............................................................................................1-9
Typical Crossover Cable .........................................................................................1-9
General Purpose Interface (GPI/GPO)......................................................................1-10
GPI .........................................................................................................................1-10
User Presets...........................................................................................................1-11
Example Schematic of General Purpose Inputs.....................................................1-12
GPO........................................................................................................................1-13
Analog XLR Connections Pinouts Drawing ...............................................................1-14
Digital XLR Connections Pinouts Drawing ................................................................1-15
Ethernet RJ-45/GPI DB-9 Pinouts Drawing..............................................................1-16