Orban OPTIMOD-FM 8200 Effect Processor
Manufacturer:
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.

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Service and User Manual
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

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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

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