Dolby Laboratories CP750, Руководство пользователя

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Using the front ‐ panel interface, navigate to the right ‐ hand last menu (where you manually
change the decode from 2D to 3D).
Scroll down until the last item in bottom of the menu,
BNC Channel Mapping
, is highlighted.
By default, this is set to the 1–8 channel assignment. Pressing the
Enter
key while
BNC
Channel Mapping
is highlighted gives you the option of changing to channels 9–16.
Use the down arrow key to select
9–16
. Highlight and press the
Enter
key once.
Your DSP100 is now configured to pass up to 16 channels of audio.
5.6 Update Surround Speaker Wiring
If your auditorium is wired to support Dolby Digital Surround EX™ audio, you do not
need to make any additional changes. If your auditorium is not wired to support Dolby
Digital Surround EX, you may need to make changes to the wiring and add amplifiers, as
described in the CP650 Dolby Digital Surround EX Connections installation note. The sound
pressure level is 82 dB for each.
5.7 HI and VI-N Channels
With the introduction of Dolby Surround 7.1, AES pair 4 inputs to the CP750 are required
for routing the Bsl and Bsr channels into the cinema processor. If these CP750 inputs are
currently being used for routing hearing impaired (HI) or visually impaired narration
(VI ‐ N, also known as audio description) channels, an external digital ‐ to ‐ analog (D/A)
converter will be required for the HI/VI ‐ N channels. You may use aftermarket cables or
adapters to fit your installation.
HI/VI ‐ N channels may be placed in AES pair 4 (channels 7/8) or AES pair 8 (channels 15/16)
depending on territory or the configuration of the digital cinema package (DCP).
For the DSP100 and CP750 combination, when configured for Dolby Surround 7.1
playback, BNC connector 4 on the rear of the DSP100 will be accessible to retrieve AES pair
8. Dolby Laboratories offers a 7.1 cable to connect the DSP100 to the CP750; the cable
package also includes a dongle connector to access HI and VI ‐ N on AES pair 4.
For the DSS200 and CP750 combination, when configured for Dolby Surround 7.1
playback, all audio connections are made on the 25 ‐ pin D ‐ connector port. A custom cable
or breakout board can be made to retrieve the AES pair 8 from the output of the DSS200 on
pins 25 and 13, as referenced in Table 5 ‐ 2 . AES pair 4 from the output of the DSS200 is on
pins 6 and 19. Dolby Laboratories also offers a 7.1 cable to connect the DSS200 to the CP750;
the cable package includes two dongle connectors to access HI and VI ‐ N on either AES pair
4 or AES pair 8.
5.8 Using the Correct Decode Mode
At no time should 5.1 discrete content be played in Dolby Surround 7.1 mode, or vice versa,
because incorrect audio would be heard in the auditorium through the back surround
speakers.
This is an important consideration for show building in the Dolby Show Manager. Preshow
audio for a Dolby Surround 7.1 feature may be discrete 5.1 ‐ channel audio. Trailers supplied