Monitor Dolby-B
ased Surround Sound
Monitor Dolby
-Based Surround Sound
If your instrument has Dolby monitoring capabilities (Option DDE), it can decode and monitor audio signals that are based on
Dolby digital surround sound formats. These formats are D olby D (AC-3 ) compression (designed for distribution) and/or
Dolby E compression (designed for production). You can specify and con figure the Dolby input sources, measure s ignal
levels and monitor phase between Dolby components, and display these relations in the A udio d isplay.
NOTE. For a list of the options that are installed on your instrument, press the CONFIG button. In the configuration menu,
select the Utilities submenu. The View Instrument Options entry lists the options installed on your instrument.
Configuring Dolby Inputs
Like other inputs, the Dolby inputs that you select and monitor from the Audio display may need to be configured before
you use them
. They will initially be set to factory defaults, w hich you can restore by pressing the FACTORY buttononthe
instrument front-panel. The fi rst procedure i n this section will help you configure these inputs. After you have completed
that procedure, check that the alarms are configured as you want them. Your setup here determines, in part, the Dolby
audio-sign
al characteristics that are displayed.
To Set Up Dolby Input Parameters
1. Press the CONFIG button to display the
Configuration menu.
2. Use the arrow keys and SEL button to
make selections in the steps that follow.
3. Select Audio Inputs/Outputs.
4. Select the Dolby input that you want to
configure (one of Dolby 1 - Dolby 4).
5. The Dolby parameters for the s elected
Dolby input are now displayed; select
each parameter in turn and set up as
described in the following steps.
6. Select Dolby Source and choose the
embedded or AES input signal pair as
the signal source to be decoded for the
Dolby input selected in step 4.
7. Select Format Expected and choose
the format condition that, when missing,
triggers the Dolby Format Alarm.
NOTE. The instrument auto-selects and
decodes the Dolby Format, depending on
the Dolby option installed.
94 Waveform Rasterizers Quick Start User Manual
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