ATSC Document A/52 Rev 3

For a bit-rate of 384 kbps, the probability of false sync word detection is 19% per frame. Byte-alignment of the input stream drops this probability to 2.5%, and word alignment drops it to 1.2%. When a sync pattern is detected the decoder may be estimated to be in sync and one of the CRC words (crc1 or crc2) may be checked. ................
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