Orban OPTIMOD-FM 8200 Effect Processor
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Model:
OPTIMOD-FM 8200
Date:
2000
Category:
Group:
Description:
Digital Audio Processor
Information
Orban’s OPTIMOD-FM 8200 DIGITAL Audio Processor is a
complete audio processing system for FM broadcast.
User-Friendly Interface
• A large liquid-crystal display (LCD) makes setup,
adjustment and programming of the 8200 easy. The screen
clearly shows all metering functions of the processing
structure in use.
• Push one of the clearly labeled soft keys to RECALL a
preset, to MODIFY processing, to program Automation Preset
Switching, or to access SYSTEM SETUP.
• HELP is always available at the push of a button. If you
get lost, ESC will always bring you back home. If you
desire, you don’t even need this manual to adjust and
program the 8200. Step-by-step instructions are on the screen.
Absolute Control of Peak Modulation
• The 8200 provides universal Transmitter protection and
audio processing for FM broadcast. It can be configured to
interface ideally with any commonly-found transmission
system in the world.
• The 8200 Audio Processor provides pre-emphasis limiting
for the internationally-used pre-emphasis curves of 50μs and
75μs. Its pre-emphasis control is almost never audibly
apparent, producing a clean, open sound with subjective
brightness matching the original program.
• The 8200 achieves extremely tight peak control; overshoot
is limited to < 0.3dB!
• The 8200’s stereo encoder (stereo generator) uses Orban’s
ROM-based, digitally-controlled Hadamard-Transform circuit
topology to produce a circuit with excellent specs, high
stability, and uncompromising baseband spectrum control.
The encoder has two outputs with independent level controls,
each capable of driving 75Ω in parallel with 47,000pF,
(100ft/30m of coaxial cable).
• By integrating the stereo encoder with the audio
processing, the 8200 eliminates the overshoot problems that
waste valuable modulation in traditional external
encoders.
• The 8200 prevents aliasing distortion in subsequent stereo
encoders or transmission links by providing
bandwidth-limiting and overshoot compensated 15kHz
low-pass filters ahead of the 8200’s audio outputs and
stereo encoder.
Flexible Configuration to Interface With Analog and Digital
Systems
• The 8200 Audio Processor is designed to meet all
applicable international safety standards.
• The 8200 Audio Processor can be configured for analog
and/or digital inputs and outputs.
• The analog inputs are transformerless, balanced 10kΩ
instrumentation-amplifier circuits, and the outputs are
transformerless, balanced, and floating with 30Ω
impedance to ensure highest transparency and accurate pulse
response.
• The optional Digital I/O follows the AES/EBU standard,
operating at 32kHz.
• All input, output, and power connections are rigorously
RFI-suppressed to Orban’s traditional exacting standards,
ensuring trouble-free installation.
• The 8200 Audio Processor is designed to work perfectly
with Orban’s studio level control units (which are commonly
used to protect transmission links in installations where
the audio is passed from studio to Transmitter in left/right
form, using telephone/post lines, dual-microwave STLs, or
similar). Adaptability Through Switchable Audio Processing
Structures.
• A processing structure is a program that operates as a
complete audio processing system. Only one processing
structure can be active at a time. Just as there are
many possible ways of configuring a processing system using
analog components (such as equalizers, compressors,
limiters, and clippers), there are many possible
processing structures achievable by the 8200. The 8200
realizes its processing structures as a series of high-speed
mathematical computations made by Digital
Signal Processing (DSP) chips.
• The 8200 is shipped in various versions containing
different sets of processing structures. Refer to the unit’s
rear panel for your Model # and the inside of the
front cover of this manual for the structures included in
your model.
• The optional Multi-Band Structure is the ultimate
processing for the competitive major market sound. It gives
your station more punch, more consistency, more
presence, and more brightness, without pumping or other
unnatural artifacts. It lets you set the speed limit — FAST,
MEDIUM FAST, MEDIUM SLOW, SLOW. FAST creates a synthetic
sound, an illusion, a dramatic, “theatrical”
sound that is ideal for competitive, high-energy hit music
formats. SLOW creates a very open sound, a sound that is
very life-like with a distinct improvement in clarity.
• The Two-Band Normal Structure is an improved version of
Orban’s classic 8100A OPTIMOD-FM sound that has helped make
thousands of stations successful. It produces an open and
natural sound, whether used for light control over
levels, or for the heavier processing often desired for some
popular music formats. It can be set up to maintain high
fidelity to the source material, or to create a sound that
is loud and dense.
• The Two-Band Purist Structure is designed for the purist
who wants to trade-off 3dB of loudness for constant group
delay at all frequencies (linear phase)
throughout the 30Hz to 15kHz range.
• The Protection Structure is designed for stations wanting
the highest possible fidelity to the source, such as a
station broadcasting concert music at night.
• The 8200 applies to digital processing a distillation of
Orban’s sixteen years of market-leading analog processing
experience; the unit builds and improves on the
uniquely successful sound of the Orban analog processors.
• All structures except the Protection Structure ride gain
over a range of as much as 25dB, reducing dynamic range and
compensating for gain riding errors on the
part of operators. The amount of dynamic range reduction
ordinarily produced is adjustable.
• The 8200 can be changed from one processing structure to
another almost instantly.
Programmable
• The 8200 is supplied from the factory with
factory-programmed presets for virtually all program
formats. Presets specify both a processing structure and its
control settings.
• Factory Presets can be user-modified and stored in 32 user
presets. They can be recalled either locally or by remote
control.
Controllable
• The 8200 Audio Processor contains a versatile real-time
clock, which permits presets to be recalled at
pre-programmed times.
• All compression, limiting, and clipping can be defeated by
remote control to permit broadcast system test and alignment
or “proof of performance” tests.
The 8200 Audio Processor is fully remote-controllable from
an RS-232/RS-422 serial port (for computer or modem
interface) using the optional 8200 PC Remote
Control Software, and by optically-isolated terminals that
can be operated with contact closures (to facilitate
interfacing to older-technology remote controls).
Orban’s optional 8200 PC Remote Control Program for IBM PC
compatibles lets you do everything from the remote computer
that you can do from the 8200’s front panel.
• The 8200 Audio Processor contains a built-in line-up tone
generator, facilitating quick and accurate level setting in
any system, as well as a Bessel-null tone for calibrating
modulation.
• The 8200 Audio Processor can produce the standard EBS
(U.S. standard Emergency Broadcast System) tones. It is FCC
type accepted.
Expandable
• The 8200 is expandable, so you can add more DSP processing
power as needed to accommodate future software upgrades and
processing structures.
Manual type:
Service and User Manual
Pages:
328
Size:
7.55 Mbytes (7919921 Bytes)
Language:
english
Revision:
Manual ID:
95100-301-01
Date:
2000 01 01
Quality:
Electronic document, no scan, very well readable.
Upload date:
2017 10 30
MD5:
bd4ac4889137612cc099e526b26d1654
Downloads:
1426
Information
Section 1: Introduction
OPTIMOD-FM 8200 DIGITAL Audio Processor
ESCape and HELP
Presets in the 8200
Input/Output Configurations
Location of OPTIMOD-FM
About Transmission Levels and Metering
Line-Up Facilities
Internal Clock
Future Updates
Warranty, Feedback
Section 2: Installation
Installation of 8200
Installation of Studio Level Controller
System Setup Using QUICK SETUP
System Setup Using Individual Calibration Controls
Time and Date
Security and Pascode Programming
Remote Control Interface Programming
Section 3: Operation
8200 Controls and Meters
Introduction to Processing
Customizing the 8200’s Sound
About the Processing Structures
Factory Programming Presets
The Protection Limiter Structure
The Two-Band Structures
The Multi-Band Structure
8200 Screen Displays
Section 4: Maintenance
Routine Maintenance
Getting Inside the Chassis
In-System Testing (“Proof of Performance”)
Field Audit of Performance
Field Alignment
Section 5: Troubleshooting
Problems and Possible Causes
Troubleshooting IC Opamps
Technical Support
Factory Service
Shipping Instructions
Section 6: Technical Data
Specifications
Circuit Description
Parts List
Schematics, Assembly Drawings
Abbreviations
8200 PC Operating Manual
Section 1: Introlduction
Section 2: Installation
Section 3: Operation
Section 4: Troubleshooting
Appendix 1: Cables (Diagrams)
Appendix 2: Modems