Electronic document, no scan, very well readable.
Version 3.0 Software/Hardware
Index ... 0-10
Section
1
Introduction
... 1-1
ABOUT THIS
MANUAL ... 1-1
THE
OPTIMOD-FM 8500 DIGITAL AUDIO PROCESSOR
... 1-1
User-Friendly
Interface ... 1-2
Absolute Control of Peak
Modulation ... 1-3
Flexible Configuration
... 1-3
Adaptability through Multiple Audio Processing Structures
... 1-5
Controllable
... 1-5
Upgradeable
... 1-6
PRESETS IN OPTIMOD-FM
... 1-7
Factory Presets
... 1-7
User Presets
... 1-7
I NPUT/ OUTPUT CONFIGURATION
... 1-7
Digital AES3 Left/right Input/outputs
... 1-8
Analog Left/right Input/output
... 1-8
Stereo Analog Baseband Composite Output
... 1-9
Subcarriers ... 1-9
Remote Control Interface
... 1-10
Computer Interface
... 1-10
RS-232 Serial Port (Serial
1) ...
1-11
RS-232 Serial Port (Serial
2) ...
1-11
100 Mbps Ethernet Port
...
1-11
LOCATION OF
OPTIMOD-FM ... 1-11
Optimal Control of Peak Modulation Levels
... 1-11
Best Location for OPTIMOD-FM
... 1-12
If the
Transmitter is not
accessible: ...
1-12
If the
Transmitter is accessible:
...
1-13
STUDIO-TRANSMITTER LINK
... 1-14
Transmission from Studio to
Transmitter ... 1-14
Digital Links
...
1-15
Composite Baseband Microwave STLs (Analog and
Digital) ... 1-16
Dual Microwave
STLs ...
1-16
Analog Landline (PTT / Post Office
Line) ...
1-17
Using the
Orban 8100AST (or 8100A/ST) External AGC with the
8500 ... 1-18
STL and Exciter Overshoot
... 1-18
USING LOSSY DATA REDUCTION IN THE
STUDIO ... 1-18
ABOUT TRANSMISSION LEVELS AND METERING
... 1-19
Meters
... 1-19
Figure 1-1: Absolute Peak Level, VU and PPM Reading
... 1-19
Studio Line-up Levels and Headroom
... 1-20
Transmission
Levels ... 1-20
LINE-UP FACILITIES
... 1-21
Metering of
Levels ... 1-21
Left/right Output Level
...
1-21
Composite Output Level
...
1-21
Built-in Calibrated Line-up
Tones ...
1-2
Built-in Calibrated Bypass Test Mode
...
1-22
MONITORING ON LOUDSPEAKERS AND
HEADPHONES ... 1-22
Low-Delay Monitoring
...
1-24
EAS TEST
... 1-24
PC CONTROL AND SECURITY P
ASSCODE ... 1-25
WARRANTY , USER
FEEDBACK ... 1-26
User
Feedback ... 1-26
LIMITED WARRANTY
... 1-26
INTERNATIONAL WARRANTY
... 1-26
EXTENDED WARRANTY
... 1-27
Section
2
Installation
... 2-1
INSTALLING THE
8500 ... 2-1
Figure 2-1: AC Line Cord Wire
Standard) ...
2-2
Figure 2-2: Wiring the 25-pin Remote Interface Connector
... 2-4
8500 REAR PANEL
... 2-5
AUDIO INPUT AND OUTPUT CONNECTIONS
... 2-6
Cable ... 2-6
Connectors
... 2-6
Analog Audio
Input ... 2-7
Analog Audio Output
... 2-7
AES3 DIGITAL INPUT AND OUTPUT
... 2-8
COMPOSITE OUTPUT AND SUBCARRIER INPUTS
... 2-9
Figure 2-3: Separation vs. load capacitance
...
2-9
GROUNDING
... 2-11
Power
Ground ... 2-11
Circuit Ground
... 2-12
8500 FRONT PANEL
... 2-12
EXTERNAL AGC INSTALLATION (OPTIONAL)
... 2-14
If you are using an
Orban 8200ST external
AGC: ... 2-14
Figure 2-4: 8200ST Jumper Settings (*Factory Configuration)
... 2-15
QUICK SETUP
... 2-17
ANALOG AND DIGITAL I/O SETUP
... 2-24
USING CLOCK-BASED AUTOMATION
... 2-36
SECURITY AND PASSCODE PROGRAMMING
... 2-37
To Unlock the Front Panel
... 2-40
8500 User Interface Behavior during
Lockout ...
2-40
Default ADMIN
Passcode ...
2-40
Security and Orban’s PC Remote
Application ... 2-41
Passcodes and Software Updates
...
... 2-41
ADMINISTERING THE 8500 THROUGH ITS SERIAL PORTS OR
ETHERNET ... 2-43
Connecting via Serial Port #2 Using a Terminal Program on a
PC ... 2-43
Connecting to the 8500’s Ethernet Port or Serial Port #1 via
a Terminal Program
on a PC
... 2-45
Direct Control Using
PuTTY ...
2-45
Automated Control Using
PuTTY/Plink ...
2-47
Automated Control Using Netcat
...
2-47
Administrative
Operations ... 2-48
REMOTE CONTROL INTERFACE PROGRAMMING
... 2-5
NETWORKING AND REMOTE CONTROL
... 2-57
I NSTALLING 8500 PC REMOTE CONTROL SOFTWARE
... 2-60
Installing the Necessary Windows
Services ... 2-60
Check Hardware
Requirements ... 2-60
Running the
Orban Installer Program
... 2-61
Setting Up Ethernet, LAN, and VPN Connections
... 2-62
Conclusion ... 2-62
SYNCHRONIZING OPTIMOD TO A NETWORK TIME
SERVER ... 2-63
Table 2-1: NIST-referenced
timeservers ...
2-63
Updating your 8500’s
Software ... 2-66
APPENDIX: SETTING UP SERIAL COMMUNICATIONS
... 2-69
Preparing for Communication through Null Modem Cable
... 2-69
Connecting Using Windows 2000 Direct Serial
Connection: ... 2-69
Connecting Using Windows XP Direct Serial Connection
... 2-75
Preparing for Communication through Modems
... 2-79
Connecting Using Windows 2000 Modem Connection
... 2-80
Connecting using Windows XP Modem Connection
... 2-85
Section
3
Operation
... 3-1
8500 FRONT PANEL
... 3-1
I NTRODUCTION TO
PROCESSING ... 3-3
Some Audio Processing
Concepts ... 3-3
Distortion in Processing
... 3-4
Loudness and Distortion
... 3-4
OPTIMOD-FM—from Bach to Rock
... 3-4
Fundamental Requirements: High-Quality Source Material and
Accurate
Monitoring ... 3-5
ABOUT THE 8500’S SIGNAL PROCESSING FEATURES
... 3-6
Dual-Mono Architecture
... 3-6
Signal
Flow ... 3-6
ITU-R 412 Compliance
... 3-10
Two-Band Purist Processing
... 3-11
Digital Radio
Processing ... 3-11
Input/Output Delay
... 3-12
CUSTOMIZING THE 8500’S SOUND
... 3-13
Basic
Modify ... 3-13
Intermediate Modify
... 3-14
Advanced Modify
... 3-14
Gain Reduction Metering
... 3-15
To Create or Save a User Preset
... 3-15
To Delete a User Preset
... 3-16
ABOUT THE PROCESSING STRUCTURES
... 3-17
F ACTORY PROGRAMMING PRESETS
... 3-18
Table 3-1: Factory Programming
Presets ...
3-19
Equalizer CONTROLS
... 3-25
Table 3-2: Equalization Controls
...
3-26
STEREO ENHANCER CONTROLS
... 3-30
Table 3-3: Stereo Enhancer Controls
...
3-30
AGC CONTROLS
... 3-31
Table 3-4: AGC Controls
...
3-31
Advanced AGC
Controls ... 3-34
CLIPPER CONTROLS
... 3
Table 3-5: Clipper Controls
...
3-37
Figure 3-1: 0-100 kHz Baseband Spectrum (Loud-Hot
preset) ... 3-40
Figure 3-2: 19 kHz Pilot Notch Filter Spectrum (Loud-Hot
preset; detail) ... 3-40
Advanced Clipper Controls
... 3-41
THE TWO-BAND STRUCTURE
... 3-43
The Protection
Presets ... 3-44
Setting Up the Two-Band Structure for Classical
Music ... 3-44
Customizing the Settings
... 3-45
The Two-Band Structure’s Full Setup Controls
... 3-45
Table 3-6: Two-Band Controls
...
3-46
Advanced Two-Band Controls
... 3-48
THE FIVE-BAND STRUCTURE
... 3-50
Putting the Five-Band Structure on the
Air ... 3-50
Customizing the Settings
... 3-50
The Five-Band Structure’s Full Setup
Controls ... 3-51
Table 3-7: Multiband Controls
...
3-51
Table 3-8: MB Attack / Release Controls
...
3-53
Table 3-9: MB Band Mix
Controls ...
3-57
Advanced Multiband and Band Mix Controls
... 3-58
To Override the Speech/Music Detector
...
3-62
ABOUT THE 8500’ S HD / DIGITAL RADIO PROCESSING
... 3-63
Delay Difference between HD and FM Outputs
... 3-65
HD I/O Setup Controls
... 3-65
Input/Output > HD Digital Radio
screen: ...
3-65
Table 3-10: HD I/O Setup Controls
...
3-66
Digital
Output ...
3-68
Unique HD Audio Controls
... 3-69
Table 3-11: Unique HD Audio Controls (found in HD Limiting
page) ... 3-70
ITU-R MULTIPLEX POWER
CONTROLLER ... 3-71
Figure 3-3: Multiplex power over 15 minute observation
interval with Multiplex power
Controller active, measured at the Optimod’s composite
output ... 3-72
Audio Processing and the Multiplex Power Threshold Control
... 3-73
About the Multiplex Power Controller’s Time Constants
... 3-73
TEST MODES
... 3-74
Table 3-12: Test Modes
...
3-74
GETTING THE
Bass SOUND YOU WANT
... 3-75
USING THE 8500 PC REMOTE CONTROL SOFTWARE
... 3-77
To set up a new connection:
... 3-78
To initiate communication:
... 3-79
To modify a control
setting: ... 3-79
To recall a
preset: ... 3-80
To save a user preset you have created:
... 3-80
To back up User Presets, system files, and automation files
onto your computer’s
hard
drive: ... 3-80
Note to Users Familiar with Older Version of PC Remote
... 3-81
To restore archived presets, system files, and automation
files: ... 3-81
To share an archived User Preset between 8500s:
... 3-83
To modify INPUT/OUTPUT and SYSTEM
SETUP: ... 3-83
To modify AUTOMATION:
... 3-83
To group multiple 8500s:
... 3-83
Operation Using the
Keyboard
... 3-84
To Quit the
Program ... 3
About Aliases created by Optimod 8500 PC Remote Software
... 3-84
Multiple Installations of Optimod 8500 PC Remote
... 3-85
Section
4
Maintenance
... 4-1
ROUTINE MAINTENANCE
... 4-1
SUBASSEMBLY REMOVAL AND REPLACEMENT
... 4-2
FIELD AUDIT OF
PERFORMANCE ... 4-7
Table 4-1: Decoder Chart for Power Supervisor
... 4-10
Table 4-2: Layout Diagram of J7, with expected voltages on
each pin ... 4-10
Table 4-3: Typical
Power Supply Voltages and AC Ripple
... 4-10
Section
5
Troubleshooting
... 5-1
PROBLEMS AND POTENTIAL SOLUTIONS
... 5-1
RFI, Hum, Clicks, or
Buzzes ...
5-1
Unexpectedly Quiet On-Air Levels
...
5-1
Poor Peak Modulation Control / Low On-Air Loudness
... 5-1
Audible Distortion
On-Air ...
5-2
Audible Noise on Air
...
5-3
Whistle on Air, Perhaps Only in Stereo Reception
... 5-4
Interference from stereo into SCA
...
5-4
Figure 5-1: Typical 8500 baseband spectrum with heavy
processing, 0-100 kHz. ... 5-4
Shrill, Harsh Sound
...
5-5
Dull Sound
...
5-5
System Will Not Pass Line-Up Tones at 100% Modulation
... 5-5
System Will Not Pass Emergency Alert System (“EAS” USA
Standard) Tones at the
Legally Required Modulation Level
...
5-6
System Receiving 8500’s Digital Output Will Not Lock
... 5-6
19 kHz Frequency
Out-of-Tolerance ...
5-6
L–R (Stereo Difference Channel) Will Not Null With
Monophonic Input ... 5-6
Talent Complains About Delay in Their Headphones
... 5-6
HD Output Sounds Too
Bright ...
5-6
Harsh Sibilance (“Ess” Sounds) in the HD
Channel ...
5-6
HD and FM Levels Do Not Match When the
Receiver
Crossfades ... 5-6
Loudness Drops Momentarily During HD Radio Analog/Digital
Crossfades ... 5-7
HD Frequency Response is Limited to 15 kHz
...
5-7
You Cannot Set Any Output to Emit an HD Signal
... 5-7
General Dissatisfaction with Subjective Sound
Quality ... 5-7
Security Passcode Lost (When Unit is Locked Out)
... 5-8
Connection Issues between the 8500 and a PC, Modem, or
Network ... 5-8
Troubleshooting
Connections ... 5-8
You Cannot Access the Internet After Making a Direct or
Modem Connection to
the 8500:
... 5-9
OS-SPECIFIC TROUBLESHOOTING ADVICE
... 5-10
Troubleshooting Windows 2000 Direct
Connect: ... 5-10
Troubleshooting Windows 2000 Modem
Connect: ... 5-11
Troubleshooting Windows XP Direct Connect:
... 5-12
Troubleshooting Windows XP Modem Connect:
... 5-1
TECHNICAL
SUPPORT ... 5-14
FACTORY
SERVICE ... 5-15
SHIPPING INSTRUCTIONS
... 5-15
Section
6
Technical
Data
... 6-1
SPECIFICATIONS
... 6-1
Performance ... 6-1
Installation
... 6-2
CIRCUIT
DESCRIPTION ... 6-6
Overview
... 6-6
Control Circuits
... 6-7
User Control Interface and LCD Display Circuits
... 6-7
Input
Circuits ... 6-8
Output
Circuits ... 6-10
DSP
Circuit ... 6-12
Power Supply
... 6-13
ABBREVIATIONS
... 6-13
P ARTS
LIST ... 6-15
Obtaining Spare Parts
... 6-15
Base Board
... 6-16
CPU Module
... 6-17
RS-232
Board ... 6-19
Power Supply
... 6-20
Input/Output (I/O) Board
... 6-21
DSP Board (Pre-V3)
... 6-25
DSP Board
(V3) ... 6-27
Interface Board
... 6-29
Headphone Board
... 6-30
Encoder Board
... 6-31
LCD Carrier Board
... 6-31
SCHEMATICS AND P ARTS LOCATOR DRAWINGS
... 6-33
Comments