Dolby Laboratories CP650 Installation Manual download pdf (Page 45)

Dolby

Model CP650 Installation Manual Front-Panel and Alignment Overview

3-3

Other Possible Front-Panel Sound Format Displays

L C R Rs Ls SW

Figure 3-3 Front-Panel Display Showing a Dolby Digital Film Playing

Figure 3-3 shows the display when the CP650 is playing a Dolby Digital soundtrack

with no Dolby Digital Surround EX decoder board installed. Since there are no Le,

Re, Bsr or Bsl channels present in this configuration, no signal bars are indicated for

those channels.

L C R Rs Bsr Bsl Ls SW

Figure 3-4 Front-Panel Display Showing Dolby Digital Surround EX Film Playing

Figure 3-4 shows the display when the CP650 is equipped with a Dolby Digital

Surround EX decoder board, and playing a Dolby Digital Surround EX soundtrack.

The additional Back Surround Left and Back Surround Right channels are present in

this configuration.

The digital sound data from current films produced with the Dolby Digital

Surround EX process contains auto-switching bits (Surround EX flags). A CP650

equipped with the Cat. No. 790 Surround EX Board detects these bits and

automatically switches the CP650 to Surround EX decoding. If the flags indicate that

the film is not a Surround EX film, or if the flag bits are not present, Surround EX

mode is switched off. The Bsr and Bsl channels are automatically configured for

either 5.1 mode or Surround EX mode.

Front-Panel Sound Format Display on Units with Earlier Software

The bar graph display on CP650s running software earlier than version 2.1.x.x (x can

be any number) is slightly different:

Dolby Digital Surround EX board installed: Not installed:

L C R Ls Rs SW Bsl Bsr L C R Ls Rs SW

Figure 3-5 Front-Panel Display When Running Earlier Software

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Dolby Laboratories CP650 Installation Manual Page 45