Miranda Kaleido-X, User Manual, Page: 103 / 407

Key Concepts
95
Subtitling/closed
captioning Presence alarms can be configured against up to four preset Teletext (WST)
pages for each input signal. The Teletext page selection parameters
determine which pages will be monitored. The Teletext page set as
Page A
will also be decoded, and its content can be displayed in a video window.
Requires the CC/XDS option (see “Enabling Options” on page 371). There are
also subtitling calibrations for the EIA-608 CC and the DTVCC alarms. See
“Calibrating Subtitling/Closed Captioning” on page 112.
Metadata holding time The holding time parameters determine the delay after which decoded
metadata such as closed captions, subtitles, or XDS metadata will be cleared.
Requires the CC/XDS option (see “Enabling Options” on page 371). Refer to
“Calibrating Metadata Holding Time” on page 113 for details.
Zero VU (dBu) The Zero VU (dBu) parameters determine the reference level to be applied to
the selected analog (from ABT) input signal. Its default value is 4 dBu, on a
range of -24 dBu to 8 dBu. See “Calibrating Zero VU Reference Level for an
ABT Audio Source” on page 107.
Zero VU (dBFS) The Zero VU (dBFS) parameters determine the reference level to be applied
to the selected digital (embedded, or from ABT) audio signal. dBFS stands for
decibels full scale . Zero dBFS corresponds to the maximum possible level. By
default the reference level for a it is set to -20 dBFS, on a range of -24 dBFS to
-8 dBFS. The extraction of digital audio requires the KXS-HD-EMB or
KXS-SD-EMB option (see “Enabling Options” on page 371). Refer to
“Calibrating Zero VU Reference Level for an Embedded Audio Source” on
page 106 for details.
Loudness/dialnorm The dialnorm value that can be found in the Dolby VANC metadata is an
indication of the average level
of dialogue in the audio stream. The loudness
is a measure of the average level of an audio stream. It is possible to configure
alarms that will be triggered whenever the measured loudness is not within
an acceptable range (1) compared to the encoded dialnorm, or (2) compared
to the reference dialnorm for your organization, or (3) when the encoded
dialnorm itself deviates too much from the reference dialnorm for your
organization. The related parameters determine the loudness measuring
standard you wish to apply, the channels that are involved in the
measurement, the reference dialnorm level for your organization, and the
ranges outside of which alarms will be triggered. Requires the KXS-Loudness
option (see “Enabling Options” on page 371). Refer to “Calibrating Dolby
VANC Loudness Measurement” on page 107 for details.