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ATSC 1.0 : Recommended Practices

An ATSC Recommended Practice is a document that states specifications or criteria within Advanced Television Systems that are not strictly necessary for effective implementation and interoperability, but that are thought to be advisable and may improve the efficiency of implementation or reduce the probability of implementation errors. An ATSC Recommended Practice may specify preferred methodology for implementation and operation and may recommend a choice from among alternatives.

  • A/54A, Guide to the Use of the ATSC Digital Television Standard, with Corrigendum No. 1Most Recent Document Approved: 04 December 2003

    Note: This document was withdrawn on 11 January 2015.

    Important Note:
    Readers requiring this document should contact dbruno@atsc.org.

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  • A/64B, Transmission Measurement and Compliance for Digital TelevisionMost Recent Document Approved: 26 May 2008

    This ATSC Recommended Practice describes methods for testing, monitoring, and measurement of the transmission subsystem intended for use in the digital television (DTV) system adopted as the U.S. Standard by the Federal Communications Commission. Both 8-VSB and 16-VSB are described in this document.

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    Reaffirmed 11 December 2014

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  • A/69, Program and System Information Protocol Implementation Guidelines for BroadcastersMost Recent Document Approved: 25 December 2009

    This document provides a set of guidelines for the use and implementation of the ATSC Program and System Information Protocol. The information contained herein applies to broadcasters, network operators, infrastructure manufacturers, and receiver manufacturers.

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  • A/74, Receiver Performance GuidelinesMost Recent Document Approved: 7 April 2010

    This Recommended Practice addresses the front-end portion of a receiver of digital terrestrial television broadcasts. The recommended performance guidelines enumerated in this document are intended to assure that reliable reception will be achieved. Guidelines for interference rejection are based on the FCC planning factors that were used to analyze coverage and interference for the initial DTV channel allotments. Guidelines for sensitivity and multipath handling reflect field experience accumulated by testing undertaken by ATTC, MSTV, NAB, and receiver manufacturers.

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    Field ensembles described in Section 5.5.2 of the Recommended Practice are available by request. Email captures@atsc.org. Send a USB drive of at least 60 GB capacity to:

    Daro Bruno
    Advanced Television Systems Committee
    1776 K Street, N.W. Ste. 800
    Washington, D.C. 20006

    Be certain to include a complete address for return of the USB drive.

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  • A/75, Developing DTV Field Test PlansMost Recent Document Approved: 26 July 2001

    This document presents the objectives of, and general methodology for conducting field tests of over-the-air terrestrial digital television (DTV) systems. The scope of the work includes reception, demodulation, and recovery of the transmitted data. The scope of the work herein is not concerned with the decoded data or analog signals except when these signals are used as a means to determine that the data has been correctly recovered.

    Note: While this document provides considerable useful information, it has not been updated and may therefore not reflect current practices.

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  • A/78, Transport Stream VerificationMost Recent Document Approved: 20 May 2015

    This Recommended Practice provides a common methodology for describing Transport Stream conformance criteria. This RP explicitly describes the elements and parameters of A/53 and A/65 that should be verified in an ATSC Transport Stream for it to be considered a proper emission. It does not cover RF, captioning, or elementary streams.

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  • A/79, Conversion of ATSC Signals for Distribution to NTSC ViewersMost Recent Document Approved: 12 December 2008

    This Recommended Practice provides guidance to broadcasters and other creators of ATSC high-definition (HD) or standard-definition (SD) content and to the operators of Multichannel Video Programming Distributor (MVPD) systems (such as cable or direct to home satellite). It recommends the equipment capabilities needed to provide the highest quality programming to viewers who only receive NTSC services.

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  • A/85, Techniques for Establishing and Maintaining Audio Loudness for Digital TelevisionMost Recent Document Approved: 12 March 2013

    This Recommended Practice provides guidance to broadcasters and creators of audio for high-definition (HD) or standard-definition (SD) television content. It recommends production, distribution, and transmission practices needed to provide the highest quality audio soundtracks to the digital television audience. This RP focuses on audio measurement, production, and postproduction monitoring techniques, and methods to effectively control loudness for content delivery or exchange. It recommends methods to effectively control program-to-interstitial loudness, discusses metadata systems and use, and describes modern dynamic range control.

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    A/85 French Translation

    The French translation of ATSC Recommended Practice: Techniques for Establishing and Maintaining Audio Loudness for Digital Television (A/85) is provided as a convenience. The translation has not been approved by the ATSC. Implementers of the Recommended Practice are urged to confirm the details in the official version of A/85.

    La traduction française de la Pratique recommandée par l’ATSC : Techniques d’établissement et de maintien de l’intensité sonore pour la télévision numérique (A/85) est offerte à des fins de courtoisie. La traduction n’a pas été approuvée par l’ATSC. Les responsables de la mise en œuvre de la Pratique recommandée doivent confirmer les détails de la version officielle de l’A/85. Pratique recommandée par l’ATSC : Techniques d’établissement et de maintien de l’intensité sonore pour la télévision numérique.

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  • A/91, Implementation Guidelines for the Data Broadcast StandardMost Recent Document Approved: 10 June 2001

    This document provides a set of guidelines for the use and implementation of the ATSC Data Broadcast Standard. As such, they facilitate the efficient and reliable implementation of data broadcast services. The information contained herein applies to data service providers as the primary entity that assembles the elements of each data channel. It also applies to broadcasters, network operators, and infrastructure manufacturers. The rules are specified in the form of constraints on the data broadcast implementation.

    Note that A/91 has not been updated to reflect the latest revision of the Data Broadcast Standard, A/90:2013

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  • A/111, Design Of Synchronized Multiple Transmitter NetworksMost Recent Document Approved: 18 September 2009

    Many of the challenges of radio frequency transmission are the same regardless of whether the information carried is in analog or digital form. Because of the signal processing applied when the information carried is digital, however, there are techniques to overcome some of those challenges that are more applicable to digital signals than to analog signals. Among such techniques is the use of multiple transmitters in Single Frequency Networks (SFNs) and Multiple Frequency Networks (MFNs). In the past, SFNs have been considered mostly for applications in multi-carrier systems such as those using COFDM modulation. This Recommended Practice applies SFNs to the single-carrier 8-VSB system adopted by the ATSC and the FCC but has not been updated yet to reflect the additional techniques needed to support Mobile DTV (as documented in A/153).

    SFNs can be implemented with Digital On-Channel Repeaters (DOCRs), with Distributed Transmitters (DTxTs), with Distributed Translators (DTxRs), or with a combination of them. MFNs generally involve the use of translators. This Recommended Practice examines all three types of transmitters used in SFNs and MFNs and then concentrates on the design aspects of SFNs in the absence of A/153 enhancements.

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  • A/154, ATSC Mobile DTV Recommended PracticeMost Recent Document Approved: 30 January 2013

    The ATSC Mobile DTV service shares the same RF channel as the standard ATSC broadcast service described in ATSC A/53 (“ATSC Digital Television Standard, Parts 1 – 6”). The purpose of this Recommended Practice is to describe how the technology is documented in the Standard, explain what is enabled by in the Standard (technically and functionally), and to provide recommendations for the emission systems. This release of this Recommended Practice provides an overview of the system and guidance for Parts 3, 4 and 6 of the ATSC Mobile DTV Standard. Guidelines covering additional Parts of A/153 are expected to be added via revision of this document at a later date.

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  • A/174, Mobile Receiver Performance GuidelinesMost Recent Document Approved: 26 September 2011

    This document addresses the signal conditions that may be encountered with assessment of the potential impact upon the front-end portion of a receiver of A/153-based mobile digital television broadcasts. This document provides recommended performance guidelines that are intended to maximize reception. In general, the recommendations in this document build on those contained in A/74 (which applies to fixed terrestrial receivers), with the addition of new guidelines pertinent to mobile reception. Areas where the recommendations are new or different include: dynamic multipath, antenna configurations in mobile receivers, the effects of more limited power supplies, possible proximity to interfering signals, and presence of unlicensed devices radiating in the TV bands.

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