scope:

This recommended practice provides a common methodology for describing Transport Stream conformance criteria. This document explicitly describes the elements and parameters that should be verified in an ATIS IIF-compliant Transport Stream for it to be considered a proper emission. It does not cover captioning or elementary streams.

While the relevant standards define strict limits for each parameter, in practice, the severity of the error may depend upon the magnitude of the deviation. This document recommends severity levels associated with the ranges of deviation from the standard in these parameters.

This standard is based upon an SCTE standard, SCTE-142, which in turn was based on ATSC Recommended Practice A/78A [9]. This standard normatively references SCTE-142, incorporating by reference all of SCTE-142, except where explicitly extended or constrained below.

Purpose

The purpose of this standard is to provide a standardized methodology for characterizing transport errors in an ATIS IIF-compliant Transport Stream, distinguishing between error types and providing bounds for classifying error severities.