Wohler iVAM1-12G, User Manual, Page: 21 / 125

iVAM1-12G
Page 21
Dolby Zoom Screen
Dolby Zoom
is a very powerful analysis tool. Much as a camera lens can "zoom"
into a single subject of interest out of many, the
Dolby Zoom
feature lets you
quickly "zoom" into a single Dolby bitstream, out of multiple encoded Dolby
streams and other channels. You can immediately listen to and meter the contained
audio channels, as well as view the Dolby metadata. Bitstreams are shown
distinctively along with the normal metering channels, as shown in Figure 2-8.
Examples of
Dolby Zoom
screens are shown in Figure 2-10.
Dolby decoding is an optional feature requiring the OPT-DOLBY module. It
allows decoding and monitoring of Dolby® D, DD+, & E streams. Refer to the
System Setup
section in Chapter 4 to install software licenses.
Figure 2-10: Dolby Zoom Screens
Metadata Scroll Dolby Metadata Channel Touch Selection Area
-00
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-20
Dolby Mode
-20
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L R C LFE Ls Rs
Dolby Program
There are no programs.
SDI-1 – (Pair : 4)
Exit Dolby Dolby Digital Plus
Stream Type
Dolby Digital Plus
Data Rate (kbps)
384
No. of Programs(s)
1
Sample Rate (kHz)
48
Blocks per Frame Code
Metadata Scroll Dolby Metadata Channel Touch Selection Area
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Dolby Program
Exit Dolby Dolby E
All Programs Program - 1
<- <<- ->> ->
1 of 2
Dolby Mode
Program - 2
SDI-1 – (Pair : 4)
Stream Type
Dolby E
Program Configuration
8x1
Frame Rate
29.97 fps
Original Frame Rate
29.97 fps
No. of Program/s
Program - 4
Program - 3
Program - 5
-60
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When the
Dolby Zoom
screen appears, the speakers will automatically begin
monitoring the downmix audio. As shown in the figure above,
SDI-1 – (Pair : 4)
indicates that the meter bar graphs and metadata are derived from the Dolby
bitstream on the fourth pair of input SDI-1. However, you may solo or mute the
individual channels for troubleshooting or other purposes. Use the left screen to
select other Dolby E channels to be monitored. Touch and slide the control on the
Dolby Metadata
screen to scroll through multiple lines of metadata.
A wide range of Metadata is available, which can help you diagnose possible
problems. It will vary according to the type of Dolby signal. For example, for
checking Guard Band, the iVAM1-12G will display the Line Position of each Dolby E
bitstream in the Dolby signal.
Touching the
Exit Dolby
button returns you to the monitoring screen from which