Figure 74: Dolby Display Readout - Tektronix WFM8200 User Manual

Audio Monitoring
To View Dolby Metadata
Usage Notes
Basic Listening Modes
154

Figure 74: Dolby display readout

If your instrument has Option DPE installed, it can decode and display selected
metadata parameters present in the Dolby D, Dolby E bitstream, or in the vertical
ancillary data in a Dolby Audio Status screen. To display the data for the currently
selected input, do the following procedure:
1. Press and hold the STATUS button to view the Status pop-up menu.
2. Select Display Type and then select Dolby Status, as shown. Note the
following:
A Dolby option must be installed for the Dolby Audio Status to display.
The Dolby format matches that of the selected input.
3. To activate the display type selected, press SEL.
4. Select the Metadata Source (AES or VANC).
NOTE.
If you select VANC at the metadata source, select the VANC source as well.
Your instrument determines the downmix based on several parameters within
the Dolby metadata and the Dolby downmix selection. For example, if the
Dolby Audio Status screen shows Extended Bitstream information indicating
that the preferred downmix is Lt/Rt, the center channel is attenuated by –3 dB
and the surround channels are attenuated by –6 dB before they are combined
into the stereo downmix.
The listening modes can be used to monitor any multichannel Dolby Digital
audio program with a user-selectable number of channels. You can select
among several basic and Pro Logic listening modes, the descriptions of which
follow. Depending on the Channel Mode, these listening modes affect the
content displayed on the Audio Display level bars. (See Table 6 on page 156.)
EX. Use EX if the two surround channels have been matrix encoded with a
back channel. If the EX listening mode is selected and there are two surround
WFM8200 and WFM8300 Waveform Monitors