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Dolby Laboratories DA20 User Manual

Dolby Laboratories DA20
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MODEL DA20
DIGITAL FILM
SOUND PROCESSOR
Users' Manual
Issue 4 Part No. 91342

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Dolby Laboratories DA20 Specifications

General IconGeneral
ManufacturerDolby Laboratories
ModelDA20
Bit Depth24-bit
Power SupplyUSB Bus Powered
ConnectivityUSB
OutputsOptical, Coaxial
Headphone OutputYes

Summary

Introduction

About This Manual

Explains the purpose and organization of the user's manual for the DA20.

About the Dolby DA20 and the Dolby Stereo Digital Format

Details the capabilities of the Dolby DA20 in relation to the Dolby Stereo Digital format.

Section 1 Operating Instructions

1.1 How to Identify Sound Tracks on Prints

Guide on distinguishing between Dolby Digital, Analog Dolby Stereo, and Mono film prints.

1.2 Film Threading

Instructions for threading film through the Cat. No. 700 Digital Soundhead.

1.3 Displays

Overview of the DA20 front panel LEDs and seven-segment error rate display.

1.4 Format Control and Auto Digital Modes

Explains modes for automatic switching between digital and analog audio formats.

1.5 Single Projector Installations

Specific considerations for setting up the DA20 in a single projector system.

1.6 Two Projector Changeover Operation

Details on how the DA20 handles seamless switching between two projectors.

1.7 Operation With an Automation System

Guidelines for integrating the DA20 with external automation systems.

Section 2 Maintenance and Adjustments

2.1 Digital Soundhead Maintenance

Procedures for cleaning and maintaining the Cat. No. 700 Digital Soundhead.

2.2 Print Cleanliness

Importance of print cleanliness for optimal Dolby Digital soundtrack performance.

2.3 Adjustments

Information on routine adjustments and when professional service is required.

Section 3 Unit Servicing / In Case of Difficulty

3.1 Troubleshooting During the Show

Guides users through diagnosing and resolving common sound system issues.

Appendix A DA20 Circuit Board Locations

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