OmniTek OTR 1001, User Manual

Page: 219 / 390

OmniTek OTR 1001 User Guide, v3.1 L-5
L.3 Dolby PPMs
With the OTR configured for the appropriate input and the required stereo pair (as described
above), PPMs can be displayed of the audio encoded within the Dolby data.
These PPMs can be viewed in two arrangements – either as a simple bar chart or with the
individual PPMs arranged to reflect the use of the audio channels for surround sound.
Figure L-7: The alternative PPM displays provided for Dolby audio by the PPM view (left) and
the Surround Sound view (right).
Both these views are available for viewing embedded audio. The first is the arrangement offered
by the
PPMs view (described in Section K.2); the second is the arrangement offered by the
Surround Sound view (described in Section K.3). The Dolby versions of these displays are
simply variants of these views with the Audio input set to Dolby audio rather than embedded
audio.
The only special feature of the Dolby versions of these views is that the levels shown, the
arrangement of the channels and the way they are labelled are all determined from the decoded
Dolby data. Features such as the metering graticule and ballistics that are used and whether Peak
Hold lines are displayed are under exactly the same controls as in the embedded audio versions
of these displays.