On 14 November 2025, the Subcommittee on Electromagnetic Compatibility of Information Technology Equipment, Multimedia Equipment and Receivers under the National Technical Committee on Radio Interference Standardization (SAC/TC79/SC7) held its the Second Plenary Meeting. The meeting was jointly chaired by Xiang Daocai, Chairman of the SAC/TC79/SC7, and Vice Chairmen Lin Jingping and Zhu Wenli. A total of 61 participants, including committee members, experts, and enterprise representatives from across the country, attended the meeting, among whom 53 were official members and their representatives, and 8 were observers.
Li Huanran, Secretary-General of the SAC/TC79/SC7, delivered the 2025 Annual Work Report, which systematically reviewed the achievements made by the Subcommittee over the past year in areas such as standards development, international standards tracking, and technical exchanges, and clearly identified the key priorities for the next stage of work.
During the special presentation session, Cui Qiang, Secretary-General of SAC/TC79/SC1 Measurement and Statistical Methods for Radio Interfence, introduced the recent progress of the standardization work of the joint CISPR working group between SC1 and SC7. Chen Hao, Secretary of SC7, gave an in-depth briefing on “Developments in IEC/CISPR International Standards,” providing detailed insights into the latest progress of the CISPR standards system, its strategic planning for the next 3 to 5 years, as well as recommendations on the direction of standardization work during the “15th Five-Year Plan” period.
The technical exchange session was highly engaging, with a number of industry experts sharing cutting-edge research results and practical experience. Experts from vivo, the Secretariat of SAC/TC246 Electromagnetic Compatibility Standardization, Rohde & Schwarz (R&S), the National Institute of Metrology of China, the Jiangsu Electronic Information Product Quality Supervision & Inspection Institute, ZTE, and Skyworth Digital, among others, conducted in-depth discussions on topics including the classification of harmonic emission limits for tablet computers, the latest standards developments within IEC/TC77, EMI testing challenges in the millimeter-wave era, metrological calibration of integrated circuit measurement equipment, EMC testing cases for multimedia equipment, the impact of the electrostatic discharge (ESD) gun’s own radiation on test results and interference assessment, and the impact of network cable configurations in anechoic chambers on measurement results. These discussions generated strong interest and wide resonance among participants.
Focusing on the development of international standards and the needs of domestic industry, the meeting reached multiple consensuses on the improvement and future development of the SAC/TC79/SC7 standards system.
First, closely following international developments and promoting standards adoption: in light of the upcoming releases of CISPR 32 Edition 3.0 and CISPR 35 Edition 2.0 in 2026, the meeting decided that the secretariat would take the lead in establishing corresponding domestic working groups and launch the drafting of national standards in advance, to ensure the timely adoption of international standards in China.
Second, improving the standards system through a tiered and categorized approach: key areas of focus will include radiated emission testing for outdoor multimedia equipment (MME), EMC standards for AI and multi-module equipment, EMC testing methods for external power supplies and charging equipment, and peripheral accessories such as audio-video cables, with the aim of building a more comprehensive standards system.
Third, defining short-term priority tasks: these include establishing domestic working groups for CISPR 32 and CISPR 35, initiating the national standard transformation of CISPR TR 29, advancing independent standards development in areas such as external power supplies and outdoor displays, carrying out research on the impact of HDMI and other cables on EMI, and promoting international standard proposals on emission limits for MME equipment in the 18–40 GHz frequency band.
The meeting deepened the members’ understanding of international standardization trends and also clarified the technical roadmap of SAC/TC79/SC7 for the upcoming 15th Five-Year Plan period.
Moving forward, SAC/TC79/SC7 will accelerate the implementation of key tasks, continuously enhancing China’s standardization capacity and international influence in the field of electromagnetic compatibility for information technology equipment, multimedia equipment, and receivers.
