NorDig releases a package of aligned updated specifications; NorDig Unified Requirements ver. 3.2.2, NorDig Unified Test Plan ver. 3.2.2 and NorDig Rules of Operation ver. 3.2.2 (November 2025)
Updates in the NorDig specifications version 3.2.2 is mainly updates and changes concerning Audio and Accessibility compared to previous ver. 3.2.1.
NorDig Unified Requirements (IRD Specification) main updates:
- Accessibility recommendations (from NorDig amendment for ver. 3.2.1)
- Audio section – updated terminology, merging non-NGA and NGA supplementary audio for accessibility, merging non-NGA and NGA loudness levels, re-ordered audio subchapters to align IRD and RoO specs.
- Adding note DVB date (MJD, Modified Julian Date) will rollover 2038, recommendation adapt to DVB coming update
- Annex H audio block diagram liaison shared from DTG, updated figure from 2012 to 2025 version
- Removal/move of unused or old requirements (7.2.2 TXT on analogue CVBS, 12.9 NorDig Broadcast Record List to Annex)
NorDig Rules of Operation (RoO) main updates:
- Audio section – aligned to match NorDig Unified Requirements
- Audio – updating terminology, merging non-NGA and NGA supplementary audio for accessibility, merging non-NGA and NGA loudness levels, include some more guidelines
NorDig Unified Test Plan main updates:
- Test tasks updated for changes in audio requirements
- Removal of MPEG1 L.II dual audio mode in test tasks (replaced with joint stereo tests)
Download NorDig specifications: https://nordig.org/specifications/
The NorDig specifications cover four areas:
- NorDig Unified Requirements, specifications for IRD (Integrated Receiver Decoders which includes STBs, PVRs and relevant parts of integrated digital TV-sets), NorDig IRD specifications are established with the aim to ensure that IRDs in the Nordic and Irish market satisfy a common set of minimum requirements, independent of operator/service provider and transmission media.
- NorDig Test Plan, specification for how to verify implementation in NorDig Integrated Receiver Decoders. Common test specifications are established to ensure that decoders comply with the common minimum requirements. Additional test specifications may apply for individual networks, especially networks with access-controlled transmissions.
- NorDig Rules of Operation (RoO) provides requirements on the configuration of transmission parameters, including the related standards, to design transmissions of content interoperable with NorDig IRD. The Rules of Operation may also be used as a guideline by IRD manufacturers to understand how NorDig Broadcasters construct compliant transmissions.
- NorDig Metadata Exchange format specification – specifies a NorDig standard for EPG/Event metadata exchange format for B2B exchange of metadata between broadcasters / content provider, network operators and other stakeholder in the distribution chain based on TV-Anytime.
All specifications are based on DVB and the minimum performance sets that are specified for NorDig compliant networks. The use of the NorDig specifications is described in “About NorDig” at www.nordig.org.
For more information or interest to participate in NorDig work please contact:
- Bjarne Andre Myklebust, Chairman NorDig Executive Committee, e-mail: bjarne.andre.myklebust@nrk.no
- Per Tullstedt, Chairman NorDig Technical Committee, e-mail: per.tullstedt @teracom.se
- Peter Mølsted, Technical consulting, e-mail: peter @moelstedconsulting.dk
NorDig is specifying a common platform for Digital Television to be used within the Nordic region (Denmark, Finland, Iceland, Norway, Sweden) and Éire.
NorDig is an open specification free to use.