Equipment information

Orban OPTIMOD_TV 8185A Effect Processor
Model: OPTIMOD_TV 8185A
Date: 1996
Category: Professional music equipment
Group: Effect Processor
Description: Stereo Generator

The 8185A Stereo Generator is a high-performance BTSC-standard stereo generator having superb audio quality and exceptional stability. Although the 8185A will work with any audio processor, it is designed to be especially effective when used in conjunction with the Orban OPTIMOD-TV audio processor. The 8185A far exceeds BTSC requirements, delivers unimpeachable subjective audio quality, and uses extremely high-performance low-pass filters to achieve excellent high-frequency response and the industry’s best aliasing rejection. The 8185A Stereo Generator has a digital baseband encoder, group delay equalization, and upgraded noise reduction circuitry for better overall performance and tighter specifications. • Digital baseband encoder generates BTSC-standard stereo subchannel and composite baseband. Fig. 1-2 shows the very clean baseband spectrum produced by the Hadamard Transform Baseband Encoder™ • Separation performance exceeds all BTSC specifications. • Works with any audio processor. (Has +10dBm active-balanced left and right inputs, and can accept flat or pre-emphasized input.) • When used with the Orban 8182A OPTIMOD-TV Audio Processor, a special interface allows interleaving of circuitry to get the brightest sound with the lowest distortion. • Easy to install and operate. • Built-in Bessel null calibration tone. • Built-in peak-indicating meter for input, circuit, and output levels. • Sharp filtering protects pilot and prevents crosstalk between the main channel and subchannel (see Fig. 1-3). • Excellent protection from aliasing. • Group delay equalization of low-pass filters to minimize overshoots (see Fig. 1-4). • dbx® noise reduction encoder. • Built-in dbx noise reduction decoder, de-emphasis, and de-matrixing for monitoring audio up to the baseband encoder. • Optional 8185A/PRO Professional Channel Generator circuitry. • Input port for separate Second Audio Program channel generator. • Optically-isolated remote control inputs for switching between stereo and mono operation, for monitoring sync lock status, and for controlling the optional 8185A/PRO Professional Channel Generator.

These manuals are available for the above equipment:

Manual Type: Service and User Manual Orban-9784-Manual-Page-1-Picture
Pages: 212
Size: 16.57 Mbytes (17375900 Bytes)
Language: english
Manual-ID/Number: 95076-000-03
Date: 01 February 1996
Quality: Scanned document, all readable.
Upload date:
MD5: 3903fe3769fee17a8c91c11411c1edaa
Downloads: 94 since 26 October 2017

1-1 Section 1: Introduction Oban's OPTIMOD-TV Stereo Generator BTSC Multichannel Television Sound System Requirements Registration, Warranty, Feedback 2-1 Section 2: Installation Installation — Quick Set-up Installation — Comprehensive Instructions Rewire of 8182A Accessory Port 3-1 Section 3: Operation Controls and Indicators Recommended Control Settings Discussion of Audio Processing Functions 4-1 Section 4: Maintenance Routine Maintenance Getting Inside the Chassis In-Line Performance Verification Individual Card Tests Field Alignment and Comprehensive Card Tests Appendix: Evaluating BTSC Stereo Generators and Audio Processors: Some Suggestions 5-1 Section 5: Troubleshooting Troubleshooting Technique Problems and Possible Causes Technical Support 6-1 Section 6: Technical Data Specifications Circuit Description Parts List Schematics, Assembly Drawings


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