Dolby Laboratories CP650 Installation Manual Page 43

  • Download
  • Add to my manuals
  • Print
  • Page
    / 166
  • Table of contents
  • TROUBLESHOOTING
  • BOOKMARKS
  • Rated. / 5. Based on customer reviews
Page view 42
Dolby
®
CP650 Installation Manual Front-Panel and Alignment Overview
3-3
The 0 shown on the bottom right is the Dolby Digital film error rate. The first
indication of satisfactory digital film playback is the detection of a low error rate. The
error rate is a number between 0 and 8. With a correctly aligned digital film reader,
most films will play at an error rate of 6 or lower. If the digital error rate exceeds 8, or
if the display shows F (data not readable) or “”(no digital soundtrack), the CP650
automatically switches to playing the film’s analog soundtrack until usable data
appears.
Other Possible Front-Panel Sound Format Displays
Figure 3-3 shows the display when the CP650 is playing a Dolby Digital soundtrack
with no Dolby Digital Surround EX decoder board installed. Because 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 Ls SW
Figure 3-3 Front-Panel Display Showing a Dolby Digital Film Playing
Figure 3-4 shows the display when the CP650 is equipped with a Dolby Digital
Surround EX decoder board, and is playing a Dolby Digital Surround EX soundtrack.
The additional Back Surround Left and Back Surround Right channels are present in
this configuration.
L C R Rs Bsr Bsl Ls SW
Figure 3-4 Front-Panel Display Showing Dolby Digital Surround EX Film Playing
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 Dolby Digital Surround EX Decoder 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.
Note: If an N appears in the top right corner of the display, Noise Floor Optimization
mode has been enabled. If a U appears, Unity Gain has been enabled.
See Section
7.16.4.
Page view 42
1 2 ... 38 39 40 41 42 43 44 45 46 47 48 ... 165 166

Comments to this Manuals

No comments