ATSC A/331 Schema Repository

ATSC A/331 Schema Repository

The following is a list of the schemas described by the A/331 Signaling, Delivery, Synchronization, and Error Protection standard.

These schema and example files were published as part of the published standard on 04/14/2026.

[ICO]NameLast modifiedSizeDescription
[PARENTDIR]Parent Directory  -  
[ ]A331-Schemas-2025-09-10.zip2026-07-07 18:13 186K 
[ ]AEAT-1.0-20210322.xsd2026-07-07 18:13 6.3K 
[ ]AEAT-Example-20210322.xml2026-07-07 18:13 1.0K 
[ ]AEAT-example-school-lockdown-update-20210322.xml2026-07-07 18:13 1.7K 
[ ]AEAT-example-subgroup-20210322.xml2026-07-07 18:13 1.2K 
[ ]AEAT-example-tornado-alert-bilingual-20210322.xml2026-07-07 18:13 2.4K 
[ ]AEAT-example-traffic-newsdesk-alert-20210322.xml2026-07-07 18:13 1.7K 
[ ]APD-1.0-20170209.xsd2026-07-07 18:13 869  
[ ]APD-Example-20170209.xml2026-07-07 18:13 428  
[ ]ATSC-META-1.0-20190122.xsd2026-07-07 18:13 393  
[ ]ContentRating-20211208.abnf2026-07-07 18:13 836  
[ ]ContentRating-Example-20211208.abnf2026-07-07 18:13 57  
[ ]DWD-1.0-20180830.xsd2026-07-07 18:13 1.6K 
[ ]DWD-Example1-20180830.xml2026-07-07 18:13 408  
[ ]DWD-Example2-20180830.xml2026-07-07 18:13 1.0K 
[ ]DWD-Example3-20180830.xml2026-07-07 18:13 911  
[ ]EFDT-Example-20211208.xml2026-07-07 18:13 1.3K 
[ ]EFDT-Example-20230714.xml2026-07-07 18:13 1.4K 
[ ]HELD-1.0-20210312.xsd2026-07-07 18:13 2.2K 
[ ]HELD-Example1-20210312.xml2026-07-07 18:13 444  
[ ]HELD-Example2-20210312.xml2026-07-07 18:13 1.6K 
[ ]META-Example-20210127.xml2026-07-07 18:13 691  
[ ]MMTUSD-1.0-20210401.xsd2026-07-07 18:13 6.1K 
[ ]MMTUSD-Example-20210401.xml2026-07-07 18:13 1.7K 
[ ]MakeContentAdvisoryString-20210402.xsl2026-07-07 18:13 760  
[ ]ONSCREEN-1.0-20210401.xsd2026-07-07 18:13 1.4K 
[ ]ONSCREEN-Example-20210401.xml2026-07-07 18:13 446  
[ ]ROUTEUSD-1.0-20170920.xsd2026-07-07 18:13 2.6K 
[ ]ROUTEUSD-Example-20170920.xml2026-07-07 18:13 783  
[ ]ROUTE_SLS-OTT-delivery-Triveni-SegmentTimeline-fixed-MPD.xml2026-07-07 18:13 3.8K 
[ ]RRT-1.0-20210128.xsd2026-07-07 18:13 2.8K 
[ ]RRT-Example-20210128.xml2026-07-07 18:13 776  
[ ]ReadMe.docx2026-07-07 18:13 15K 
[ ]RepairFlow-Example1-20210420.xml2026-07-07 18:13 644  
[ ]RepairFlow-Example1-20220708.xml2026-07-07 18:13 644  
[ ]RepairFlow-Example2-20210420.xml2026-07-07 18:13 890  
[ ]RepairFlow-Example2-20220708.xml2026-07-07 18:13 890  
[ ]RepairFlow-Example3-20210420.xml2026-07-07 18:13 1.1K 
[ ]RepairFlow-Example3-20220708.xml2026-07-07 18:13 1.1K 
[ ]RepairFlow-Example4-20210420.xml2026-07-07 18:13 647  
[ ]RepairFlow-Example4-20220708.xml2026-07-07 18:13 647  
[ ]RepairFlow-Example5-20210420.xml2026-07-07 18:13 672  
[ ]RepairFlow-Example5-20220708.xml2026-07-07 18:13 672  
[ ]S-TSID-1.0-20210411.xsd2026-07-07 18:13 9.1K 
[ ]S-TSID-1.0-20220708.xsd2026-07-07 18:13 9.2K 
[ ]S-TSID-1.0-20230714.xsd2026-07-07 18:13 9.4K 
[ ]S-TSID-1.0-20260324.xsd2026-07-07 18:25 11K 
[ ]S-TSID-Example-20210428.xml2026-07-07 18:13 2.5K 
[ ]S-TSID-Example-20220708.xml2026-07-07 18:13 2.6K 
[ ]S-TSID-Example-20230714.xml2026-07-07 18:13 2.6K 
[ ]S33-645r2-FDT-Enhancement-Schema.zip2026-07-07 18:13 4.3K 
[ ]SA-1.0-20210312.xsd2026-07-07 18:13 12K 
[ ]SA-ContentAdvisoryRatings-Example-20211208.xml2026-07-07 18:13 724  
[ ]SLT-1.0-20211209.xsd2026-07-07 18:13 7.4K 
[ ]SLT-1.0-20250604.xsd2026-07-07 18:13 8.3K 
[ ]SLT-Example-20211209.xml2026-07-07 18:13 1.2K 
[ ]SLT-Example-20250606.xml2026-07-07 18:13 1.4K 
[ ]SLT-Example2-20211209.xml2026-07-07 18:13 3.3K 
[ ]SLT-Example3-20211209.xml2026-07-07 18:13 1.4K 
[ ]SYSTIME-1.0-20211208.xsd2026-07-07 18:13 1.3K 
[ ]SYSTIME-Example-20211208.xml2026-07-07 18:13 414  
[ ]UserAgentString-20211208.abnf2026-07-07 18:13 1.9K 
[ ]UserAgentString-Example-20211208.abnf2026-07-07 18:13 66  
[ ]lat-long-20250925.abnf2026-07-07 18:13 1.7K 
ATSC A/331 Schema Repository
Copyright © 2020-2026 Advanced Television Systems Committee, All rights reserved.