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ANSI/SCTE Specifications

  • This standard describes the framing structure, channel coding, and channel modulation for a digital multi-service television distribution system that is specific to a cable channel. The system can be used transparently with distribution from a satellite channel, as many cable systems are fed directly from satellite links. The specification covers both 64 and 256 QAM. Most features of the two modulation schemes are the same. Where there are differences, the specific details for each modulation scheme are covered.