Dolby Laboratories CP650 Installation Manual download pdf (Page 13)

Dolby

Model CP650 Installation Manual

1-1

Chapter 1

Introduction

1.1 About the Dolby CP650 Digital Cinema

Processor

The Dolby CP650 Digital Cinema Processor is a self-contained, all-digital cinema

processor capable of supporting Dolby

Digital, Dolby Digital Surround EX

, Dolby

SR, Dolby A-type, and Academy mono film sound playback.

The CP650 provides inputs for two projector soundheads (both analog and digital), an

external six-channel processor, two nonsync sources, and a PA microphone. Its audio

outputs are balanced, with a multipin connector configured to the THX standard. The

CP650 is the first cinema processor to incorporate an Ethernet connection, enabling

theatre personnel to monitor the unit’s functions remotely from a PC.

For decoding analog soundtracks, the CP650’s state-of-the art design incorporates the

only digital implementations of Dolby A-type and Dolby SR decoding that meet

Dolby Laboratories’ own rigorous standards. Reductions in the cost of powerful

digital signal processing (DSP) circuitry have made it possible for the first time to

replace the analog circuitry previously necessary for the accurate reproduction of

A-type and SR soundtracks.

An easy-to-read LCD screen, plus simple front-panel format selection and control

buttons, makes it easy to install, operate, and maintain the CP650. Installation is

further simplified by built-in test instrumentation that includes a real-time analyzer.

Third-octave equalization, plus bass and treble trim controls, are provided for up to

seven channels (Left, Center, Right, Left Surround, Right Surround, Back Surround

Left, and Back Surround Right). A digital parametric equalizer is provided for

subwoofer equalization.

Easily programmed internal software manages most existing or likely future formats.

While an external PC is not required for setup, a full-featured software package is

available in several languages to facilitate the setup process. A serial connector for a

PC, an input for a calibration microphone multiplexer, and a variety of test points are

all accessible behind an access door on the front-panel. Built-in diagnostic software

runs automatically whenever the CP650 is turned on.

Calibration settings for a given theatre can be stored on a PC, and, if necessary,

transferred directly to another CP650, or other modules, minimizing the need for

additional calibration after repairs. As improvements to the CP650 digital control and

processing software are developed, the latest revisions will be downloadable from a

PC to the CP650. Updates to the digital processing used for Dolby Digital

soundtracks are included from time to time on Dolby Digital release prints, and

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Dolby Laboratories CP650 Installation Manual Page 13