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Dolby Laboratories CP500 User Manual

Dolby Laboratories CP500
55 pages
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Film-Tech
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Table of Contents

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Dolby Laboratories CP500 Specifications

General IconGeneral
BrandDolby Laboratories
ModelCP500
CategoryComputer Hardware
LanguageEnglish

Summary

SECTION 1 INTRODUCTION

1.1 About the Dolby CP500

Overview of the Dolby CP500's features and role in theater sound systems.

1.2 About This Manual

Explains the manual's organization and purpose for projectionists.

SECTION 2 OPERATING INSTRUCTIONS

2.1 The CP500 Front Panel

Details the soft keys, hard keys, and display elements of the CP500.

2.2 System Password

Discusses password protection for alignment and configuration settings.

2.3 Normal Operation

Covers the power-up states and the standard current format screen.

2.3.2 Format Selection

Explains how to select different film soundtrack formats using softkeys.

2.3.3 Automatic Selection of Dolby Digital Format

Describes the auto-digital feature for seamless switching to Dolby Digital.

2.3.3 Main Fader

Details the operation and setting of the main fader for volume control.

2.3.4 Auditorium Fader

Details the activation and use of an optional analog auditorium fader.

2.3.5 Mute Function

Explains the mute key function for fading sound down and up.

2.3.6 Operation With an Automation System

Discusses integration and control with external automation equipment.

2.4 Bypass Operation

Covers the CP500's emergency bypass mode and its functionality.

2.4.1 Manual Bypass Selection

Provides methods for manually switching the CP500 to bypass mode.

2.5 Customizing Features

Introduces features for personalizing the CP500's display and functions.

2.5.1 Setting the LCD Display Contrast

Guides users on adjusting the contrast of the front panel LCD display.

2.5.2 Setting Mute Speed

Details how to adjust the duration of the sound fade-out for the mute function.

2.5.3 Customizing the Format Display Screen

Explains how to switch between Standard and Custom format display modes.

SECTION 3 MAINTENANCE AND ADJUSTMENTS

3.1 Soundhead Maintenance

Outlines procedures for cleaning projector soundhead optics and solar cells.

3.1.2 Dolby Level Adjustment

Describes the process for calibrating Dolby level for accurate soundtrack decoding.

3.2 Print Cleanliness

Emphasizes the importance of keeping film prints clean for optimal sound quality.

SECTION 4 TROUBLESHOOTING

4.1 During the Show

Provides steps for diagnosing and resolving sound issues that occur during a performance.

4.2 Between Shows

Offers checks for power supply status and LEDs before or after a show.

4.3 Troubleshooting Chart

A reference guide to symptoms, probable causes, and recommended actions for CP500 issues.

APPENDIX A HOW TO IDENTIFY SOUND TRACKS ON PRINTS

Identify Sound Tracks on Prints

Explains how to visually distinguish between Dolby Digital, Analog Stereo, and Mono prints.

APPENDIX B DOLBY TEST AND DEMONSTRATION FILMS

Cat. No.69T: Dolby Tone Test Film

Details the use of the Dolby Tone test film for calibrating operating levels.

Cat. No. 251 Jiffy Test Film

Describes the Jiffy Test Film for subjective system evaluation and problem identification.

Specialized Test Films for Engineers

Lists specialized test films for engineers, including alignment and setup procedures.

APPENDIX C THE EVOLUTION OF DOLBY FILM SOUND

C.1 Optical Sound

Explains the history and technology of optical soundtracks in film.

C.2 Magnetic Sound

Discusses the introduction and impact of magnetic sound on film.

C.3 Dolby Advancements

Details Dolby's role in advancing film sound, including Dolby Stereo.

C.4 Dolby SR and Digital Formats

Covers Dolby SR, Dolby Digital, and Dolby AC-3 techniques.

C.7 Making Films Sound Better

Discusses how Dolby developments enhance the overall film sound experience.

APPENDIX D FOLD-OUT DRAWINGS

Software Menu Tree

Refers to system drawings, including the software menu structure.

Circuit Card Locations and Signal Flow

Refers to system drawings showing circuit card placement and signal paths.

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