Equipment information

Orban OPTIMOD-FM 8000A Effect Processor
Manufacturer:
Model:
OPTIMOD-FM 8000A
Date:
1994
Category:
Group:
Description:
Limiter/Stereo Generator

Information

The Optimod 8000 FM Limiter/Stereo Generator is the result of a new and exclusive systems approach to the design of the FM audio processing chain. In combining three conventionally separate components, the limiter, the compressor, and the stereo generator. Bob Orban has engineered a single system which is capable of achieving both high loudness and extremely high audio quality simultaneously. These two goals are mutually exclusive in conventional systems. It is important that this manual be read carefully and that the instructions be followed conscientiously. Make no assumptions on the basis of past experience with conventional systems. A technical paper entitled "Combining High Signal Quality with High Modulation Levels in FM" has been included with this instruction manual. We suggest that you read this before proceeding with the actual installation and adjustment of your Optimod 8000.

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Service and User Manual
Manual Type:
Service and User Manual
Pages:
64
Size:
5.95 Mbytes (6239093 Bytes)
Language:
english
Revision:
Manual-ID:
95010-000-07
Date:
1994 02 01
Quality:
Scanned document, all readable.
Upload date:
2017 10 25
MD5:
ab607c0f5aac1b5eeaa5ec6f107ee599
Downloads:
620

Information

Introduction ... 1-1 General ... 1-1 Operating Characteristics ... 1-1 Applying Optimod to the FM Chain ... I-2 Audio Operations and Optimod ... I-2 Operating Instructions ... ii-1 General ... 11-1 Meter Selector Switch ... 11-1 Stereo/Mono Switching ... II-2 Front Panel Switching ... II-2 Operating in Mono Mode ... II-2 Installation ... ni-1 Preliminary Checkout ... 111-1 Strapping and Restrapping ... ill-1 AC Voltage Input ... 111-1 Input Attenuator Pads ... III-2 High Pass Filter ... ill-2 Mono Left/Mono Right Front Panel Switching ... III-3 Turn-on Initialization ... III-3 Mounting and Grounding the Chassis ... III-3 Audio Input Connections ... III-4 Stereo/Mono Remote Control ... III-4 Remote Gain Reduction Metering ... III-4 Installation Location ... III-4 Interfacing with Exciter ... MI-5 Initial Setup and Adjustments ... iv-1 Setup ... IV-1 Release Time Control ... IV-1 Final Adjustment ... IV-2 Stereo Generator Trim ... IV-2 Stereo Performance Measurements ... IV-3 Mono Proof-of-Performance ... IV-4 Maintenance ... v-1 General ... V-1 Routine Maintenance Procedure ... V-1 Field Repairs ... ... ... V-1 Access ... V-1 Top and Bottom Covers ... V-1 Rear Panel ... V-2 Front Panel ... V-2 Rotary Switch ... V-3 Circuit Boards ... V-3 BNC Connector ... V-3 Replacement of Components in Printed Circuit Boards ... V-4 Calibration and Adjustment ... V-4 Principles of Operation ... vi-1 General ... VI-1 Input ... VI-2 Broadband AGC ... VI-2 High Frequency Limiter ... VI-2 Lowpass Filters and Instantaneous Limiters ... VI-2 19 kHz Oscillator ... VI-3 38 kHz Generator ... VI-3 Stereo/Mono Switching ... VI-4 Stereo Modulator and Output ... VI-4 Power Supply ... VI-6 Limiter Block Diagram ... VI-7 Stereo Generator Block Diagram ... VI-9 Circuit Description ... vn-i General ... VII-1 Comments on IC Opamps ... VII-1 Input ... VII-2 Broadband AGC ... VII-2 High Frequency Limiter ... VII-3 Instantaneous Limiters and Lowpass Filters ... VII-4 19 kHz Oscillator ... VII-6 38 kHz Generator ... VII-6 Stereo/Mono Switching ... VII-8 Stereo Modulator ... VII-9 Power Supply ... VII-11 Input and Limiter Schematic ... ... VII-13 Stereo Generator Schematic ... VII-15 Power Supply Schematic ... VII-17 Appendix I: Alignment Procedure ... A-1 Touchup Alignment ... A-1 Complete Alignment ... A-1 Required Instrumentation ... A-1 Setup for Complete Alignment ... A-2 Power Supply, Limiters, and Filters ... A-2 Stereo Generator Alignment ... A-5 Limiter Board Alignment Points ... A-9 Stereo Generator Board Alignment Points ... A-11 Appendix II: Specifications ... a-13 Parts List ... p-1 Input Filter Board ... P-1 Limiter Board ... P-3 Stereo Generator Board ... P-9 Power Supply ... P-15

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