ANSI SCTE 168-4-2019 pdf free download – Recommended Practice for Transport Stream Verification Metrics.
4.0 DEFINITIONS AND ACRONYMS
8-VSB – Acronym for 8-Level Vestigial Sideband (Digital TV RF modulation format)
AEIT – Acronym for Aggregate Event Information Table, defined in SCTE-65 [4].
AETT – Acronym for Aggregate Extended Text Table, defined in SCTE-65 [4].
CM – Acronym for Component Missing, defined in SCTE-142 [8].
CRC – Acronym for Cyclic Redundancy Check, defined in ISO/IEC 13818-1 [9].
CVCT – Acronym for Cable Virtual Channel Table, defined in ATSC A/65 [7].
DPI – Acronym for Digital Program Insertion, defined in SCTE 35[2].
DTS – Acronym for Decoding Timestamp, defined in ISO/IEC 13818-1 [9].
DTV – Acronym for Digital Television.
EAS – Acronym for Emergency Alert System, defined in SCTE 18[1].
EIT – Acronym for Event Information Table, defined in ATSC A/65 [7].
EPG – Acronym for Electronic Program Guide.
ES – Acronym for Elementary Stream, defined in ISO/IEC 13818-1 [9].
ETT – Acronym for Extended Text Table, defined in ATSC A/65 [7].
GPS – Acronym for Global Positioning System.
L-VCT – Acronym for Long-form Virtual Channel Table, defined in SCTE-65 [4].
MPEG – Acronym for Moving Picture Experts Group.
MGT – Acronym for Master Guide Table, defined in ATSC A/65 [7].
MRD – Acronym for MPEG-2 Registration Descriptor, defined in ISO/IEC 13818-1 [9].
Mux – Multiplexer.
OOB-SI – Acronym for Out of Band – SI, defined in SCTE-65 [4].
PAT – Acronym for Program Association Table, defined in ISO/IEC 13818-1 [9].
PCR – Acronym for Program Clock Reference, defined in ISO/IEC 13818-1 [9].
PES – Acronym for Packetized Elementary Streams, defined in ISO/IEC 13818-1 [9].
PID – Acronym for Packet ID, defined in ISO/IEC 13818-1 [9].
PMT – Acronym for Program Map Table, defined in ISO/IEC 13818-1 [9].
POA – Acronym for Program Off Air, defined in SCTE-142 [8].
PSI – Acronym for Program Specific Information, defined in ISO/IEC 13818-1 [9].
PSIP – Acronym for Program and System Information Protocol, defined in ATSC A/65
[7].
PTS – Acronym for Presentation Time-Stamp, defined in ISO/IEC 13818-1 [9].
PVR – Acronym for Personal Video Recorder.
QAM – Acronym for Quadrature Amplitude Modulation.
QoS – Acronym for Quality of Service, defined in SCTE-142 [8].
RF – Acronym for Radio Frequency.
RP – Acronym for Recommended Practice.
RRT – Acronym for Rating Region Table, defined in ATSC A/65 [7].
SCTE – Acronym for Society of Cable Telecommunications Engineers.
SI – Acronym for Service Information, defined in SCTE 54 [3].
SLD – Acronym for Service Location Descriptor, defined in ATSC A/65 [7].
STT – Acronym for System Time Table, defined in ATSC A/65 [7].
S-VCT – Acronym for Short-form Virtual Channel Table, defined in SCTE-65 [4].
TNC – Acronym for Technically Non-Conformant, defined in SCTE-142 [8].
TOA – Acronym for Transport Stream Off Air, defined in SCTE-142 [8].
TVCT – Acronym for Terrestrial Virtual Channel Table, defined in ATSC A/65 [7].
TS – Acronym for Transport Stream, defined in SCTE 54 [3].
TSID – Transport Stream ID, defined in ISO/IEC 13818-1 [9].
T-STD – Acronym for Transport Stream System Target Decoder, defined in ISO/IEC 13818-1 [9].
TVCT- Acronym for Cable Virtual Channel Table, defined in ATSC A/65 [7].
VCT – Acronym for Virtual Channel Table, defined in ATSC A/65 [7].
5.0 INTRODUCTION
This Recommended Practice provides a common methodology for associating transport stream verification metrics with functional subsystems in cable architectures. Appropriate metrics are grouped into sets specific to functional areas within the cable network.
Metrics are measurements aimed at determining the presence of impairments (errors in the transport streams carrying compressed content that can affect the perceived quality of the delivered content). The location of these metrics can be used to determine the source of the impairment, which is a key step in troubleshooting and resolving problems. As shown in Figure 5.2, below, a cable architecture is quite complex. However, it is composed of a number of functional blocks – each performing a specific function in the flow of content through the system. These blocks may be organized into common functional categories of operations which can be further organized into groups which perform similar operations from the viewpoint of metrics (by nature of the operations performed by the components of the category, the impairments that can be created are in common). Section 6.0 explains the categories used in this RP.ANSI SCTE 168-4 pdf download.