Harmonic ProView 7000, User Manual

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Glossary
Numerics
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R
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© 2012 Harmonic Inc. 214 ProView 7000 v.2.6, Rev. E
output of each device in the chain is checked in turn versus the nominal level. This is an analog concept
and measurement. The setting permits the encoder to adjust its gain structure to ensure that the
resulting digital audio level for a sine-wave tone at Reference Level will be 20 dBFS.
In the digital domain the Facility Reference Level should be equivalent to -20 dBFS (decibels below Full
Scale) per SMPTE RP155.
remultiplexer
A component that multiplexes several MPEG-2 SPTS input streams into a single MPTS output stream.
RJ-45
Also RJ45. An eight-wire connector such as an Ethernet connector. See also
10BASE-T
and
100BASE-T
.
roll-off factor
The amount of
bandwidth
used in excess of the baud rate.
S
SD
Standard Definition.
SDI
Serial Digital Interface.
SDT
Service Description Table. This DVB table describes services contained within a particular transport
stream. The services might be part of the actual transport stream or part of other transport streams,
which the table_id identifies.
See also
SI
.
SI
Service Information. A set of standardized tables that supplements MPEG PSI . These tables (for DVB)
include the BAT, NIT , SDT , EIT , RST, and TDT . ATSC PSIP is also SI.
single channel
See
monaural
.
SMPTE
Society of Motion Picture and Television Engineers, primary creator of motion imaging standards for
TV, digital cinema, and film.
SMPTE 334-1
Society of Motion Picture and Television Engineers – Vertical ancillary data mapping of caption and
related data.
SMPTE 334-2
Caption Distribution Packet (CDP) Definition.