Electronic document, no scan, very well readable.
Index
...
I-7
Reading this
Manual ...
1-2
6200 OPTIMOD-DAB Digital Audio
Processor ... 1-2
User-Friendly
Interface ...
1-3
Flexible Configuration
...
1-3
Adaptability through Multiple Audio Processing Structures
... 1-4
Controllable
...
1-4
Presets in OPTIMOD-DAB
... 1-5
Factory Processing Presets
...
1-5
User Presets
...
1-5
Input/Output Configuration
... 1-6
Digital AES/EBU Left/Right
Input/Output ...
1-6
Analog Left/Right Input/Output
...
1-6
Studio-Transmitter
Link ...
1-7
Transmission from Studio to
Transmitter
... 1-7
Location of OPTIMOD-DAB
... 1-10
At the
Transmitter is
Best ...
1-10
Where Access to the
Transmitter Plant is Not
Possible ... 1-10
OPTIMOD-DAB at the Transmitter: Gain Control before the
STL ... 1-11
Using Lossy Data Reduction in the Studio
... 1-11
Interfacing to the
Transmitter
... 1-12
Sync Input
...
1-12
Sample Rate and Audio Bandwidth
...
1-12
Subframe Delay
...
1-13
Program-Associated Data (PAD)
...
1-13
Setting Modulation Levels
... 1-13
Monitoring on Loudspeakers and Headphones ...
1-14
EAS Test
...
1-15
Security Pascode for PC
Control ... 1-16
DTV Applications
... 1-16
Using the
6200 in the United States DTV
System ... 1-16
Audio Processing for Consistency and Loudness Control
... 1-18
A Hybrid Technique for DTV Processing
... 1-18
Advantages of Multiband Compression in DTV Audio
... 1-19
Using the
6200 in the 5.1 Channel Plant
... 1-20
Bypassing the Loudness
Controller
... 1-20
The
6200 in 2-Channel DTV Applications
... 1-20
Webcasting
Applications ... 1-21
Using the
6200 in Streaming Applications
... 1-21
Using the
6200 in Non-Streaming Applications, to Prepare Audio
Files for
Download ... 1-22
Decoder Headroom
... 1-22
Loudness
... 1-22
Choosing your
Encoder ... 1-23
MP3 ... 1-23
Warranty,
Feedback ... 1-23
User Feedback
Form ... 1-23
Installing the
6200 ... 2-2
Figure 2-1: Jumper
Settings ... 2-3
Figure 2-2: AC Line Cord Wire
Standard ... 2-4
Figure 2-3: Wiring the 25-pin Remote Control
Connector ... 2-6
Figure 2-4: Wiring the RS-232 Computer Interface
Connector ... 2-7
6200 Rear
Panel ... 2-7
Audio Input and Output
Connections ... 2-8
Cable
... 2-8
Connectors ... 2-8
Analog Audio
Input ... 2-8
Analog Audio Monitor
Output ... 2-9
AES/EBU Digital Input and Output
... 2-10
Grounding
...
2-10
Power Ground
...
2-11
Circuit
Ground ...
2-11
6200 Front Panel
...
2-11
Installation of Studio Level
Controller (optional)
... 2-13
If you are using
Orban 8200ST-Studio Chassis
... 2-13
Figure 2-5: 8200ST Jumper Settings (*Factory
Configuration) ... 2-14
Figure 2-6:
464A Jumper
Settings ...
2-16
If you are using
Orban 464A
Co-Operator ...
2-17
If you are using an
Orban 4000 Transmission Limiter
... 2-19
Figure 2-7:
4000 Jumper
Locations ...
2-19
Figure 2-8:
4000 HF Limiter
Jumpers ...
2-20
Figure 2-9:
4000 Pre-Emphasis
Jumper ...
2-20
Figure 2-10:
4000 Pre-Emphasis
Jumper ...
2-21
Figure 2-11:
4000 Stereo Coupling Jumper
... 2-21
System
Setup ...
2-23
Analog I/O Setup
...
2-24
Digital I/O Setup
...
2-30
Security and Pascode Programming
... 2-35
Remote Control Interface
Programming ... 2-36
6200 Front Panel
...
3-2
Introduction to Processing
... 3-3
Some Audio Processing
Concepts ...
3-3
Distortion in Processing
...
3-3
Loudness and Distortion
...
3-4
OPTIMOD-DAB — from Bach to
rock ...
3-4
Customizing the 6200’s
Sound ... 3-5
Less-More
...
3-5
Full Control
...
3-6
Fundamental Requirements: High-Quality Source Material
and Accurate Monitoring
...
3-6
About the Processing Structures
... 3-6
Factory Programming Presets
... 3-7
Factory Programming
Presets ... 3-7
Table 3-1: Factory Programming Presets (Radio)
... 3-9
Table 3-2: Factory Programming Presets
(Television) ... 3-11
The Protection Limiter Structure
... 3-13
Setting Up the Protection
Limiter ... 3-13
Protection Limiting: Orban’s Approach
... 3-14
Equalization Controls
... 3-16
Table 3-3: Multi-Band Equalization Controls
... 3-16
The Two-Band Structure
... 3-20
Setting Up the Two-Band Structure
... 3-20
Gain Reduction Metering
... 3-21
Using the Two-Band Structure for Classical Music
... 3-21
The Two-Band Structure’s Full Setup
Controls ... 3-22
Table 3-4: Two-Band
Controls ... 3-22
The Multi-Band Structure
... 3-26
Putting the Multi-Band Structure on the Air
... 3-27
Customizing the Settings
... 3-27
The Multi-Band Structure’s Full Setup Controls
... 3-28
Table 3-5: Multi-Band Controls
... 3-28
Test Modes
... 3-35
Table 3-6: Test Modes
... 3-35
Using the
6200 for
Mastering ... 3-35
Limitations in Mastering Applications
... 3-37
Routine Maintenance
... 4-2
Getting Inside the
Chassis ... 4-2
Field Audit of Performance
... 4-8
Problems and Possible Causes
... 5-2
RFI, Hum, Clicks, Or Buzzes
...
5-2
Poor Peak Modulation Control
...
5-2
Audible Distortion
On-Air ...
5-2
Audible Noise On-Air
...
5-3
Shrill, Harsh Sound
...
5-3
System Receiving 6200’s Output Will Not Lock
... 5-4
System Will Not Pass Line-Up Tones at 100%
Modulation ... 5-4
System Will Not Pass Emergency Alert System (“EAS” USA Standard)
Tones at the Legally-Required Modulation Level
... 5-4
General Dissatisfaction with Subjective Sound
Quality ... 5-4
Excessively Loud Commercials (DTV
applications) ... 5-4
Inconsistent Levels (DTV
applications) ...
5-5
Incorrect Lip Sync (DTV
Applications) ...
5-5
Troubleshooting IC
Opamps ... 5-5
Technical Support
...
5-6
Factory
Service ...
5-6
Shipping Instructions
...
5-7
Specifications
...
6-2
Circuit Description
...
6-6
Overview
...
6-6
12.288MHz Oscillator and System Clocking
... 6-6
1
Microprocessor and Power Monitoring Circuit
... 6-8
2
RAM, ROM and EEPROM
...
6-9
3
Data Latches, Tri-State Data Buffers and Address Decoders
... 6-9
User Control Interface and LED Display Circuits
... 6-9
1.
Remote and RS-232 Interfaces
...
6-10
2.
Switch Matrix and LED Indicators
... 6-10
3.
LED Meter
Circuits ...
6-10
Input Circuits
... 6-11
1.
Analog Input Stages
... 6-11
2.
Stereo Analog-to-Digital (A/D)
Converter ... 6-12
3.
Digital Input
Receiver and Sample Rate
Converter (SRC)
... 6-12
4.
Digital Sync Input
Receiver ... 6-13
Output
Circuits ... 6-14
1.
Stereo Digital-to-Analog (D/A)
Converter ... 6-14
2.
Analog Output Stages
... 6-15
3.
Digital Sample Rate
Converter (SRC) and Output
Transmitter
... 6-16
DSP
Circuits ... 6-17
Power Supply
... 6-18
Parts List
... 6-20
Obtaining Spare
Parts ... 6-21
Vendor Codes
... 6-29
Schematics, Assembly
Drawings ... 6-30
Abbreviations
... 6-50
Comments