Radio Frequency Testing

Since 2021, China's radio management technology standards have undergone significant updates. The "Wireless [2021] No. 129" document issued by the Ministry of Industry and Information Technology has made new regulations on the technical requirements of various wireless transmission equipment, which has also led to a new round of standard upgrades for the existing SRRC certification system. This article will delve into the core points of this standard change and its impact on enterprises. 
  
1、 Background and significance of standard upgrade 
  
The release of Document No. [2021] 129 by the Ministry of Industry and Information Technology marks a new stage of more standardized and refined management of radio equipment in China. This round of standard revision is not only synchronized with the development of international radio technology, but also to adapt to the increasingly complex electromagnetic environment and diverse application needs in China. 
The new version of the standard has put forward stricter requirements in terms of technical indicators such as frequency tolerance, spurious emission, and bandwidth occupation, while providing clear testing method guidelines for the application scenarios of new wireless technologies. This change will have a profound impact on the entire wireless equipment industry chain. 
  
2、 Comparison of Main Differences between New and Old Standards 
  
Re division of frequency range: The new version of the standard has optimized and adjusted the usage boundaries of some frequency bands, and added frequency band support for emerging applications such as the Internet of Things and the Internet of Vehicles. Enterprises need to closely monitor these changes when planning their products to ensure forward-looking and compliant product design. 
Testing methods and limit updates: In the measurement methods of key parameters such as equivalent omnidirectional radiation power and out of band stray emissions, the new standard introduces more considerations for practical application scenarios, making the testing more reflective of real usage conditions. 
Introduction of new technical requirements: Targeted technical clauses have been added for different categories of products such as short-range low-power devices and public mobile communication terminals. 
  
3、 Analysis of SRRC Certification Core Process 
  
Faced with standard upgrades, enterprises need to reorganize the entire process of SRRC certification: 
Preliminary preparation work: Firstly, it is necessary to confirm the equipment category to which the product belongs and its corresponding specific technical standards. Prepare complete product technical documentation, including RF parameters, circuit diagrams, user manuals, and other necessary documents. 
Sample testing stage: The submitted samples need to undergo a complete set of RF parameter tests in an authorized testing laboratory. The testing cycle usually takes several weeks, depending on the complexity of the product and the laboratory schedule. 
Data review and certification: After passing the inspection, submit the application materials to the radio management agency. Approval is required before obtaining the radio transmission equipment model approval certificate. 
  
4、 Suggestions for Enterprise Response Strategies 
  
Product design and rectification: It is recommended that companies introduce new standard requirements in the early stages of product development to ensure compliance from antenna design, filter selection, and other sources. 
Timing of certification: Considering the transitional period arrangement of standard implementation, enterprises should reasonably arrange the certification time according to the product launch plan to avoid affecting product sales due to standard switching. 
Technical document management: Establish a sound product technical file to ensure that suppliers of key components can provide technical certification documents that comply with the new standards. 
  
5、 Frequently Asked Questions and Answers 
  
How to handle the transition period: During the transition period between new and old standards, regulatory authorities usually set a reasonable transition period. Enterprises should promptly pay attention to relevant policy notifications and prepare corresponding contingency plans. 
Validity of existing certificates: SRRC certificates obtained under the original standards remain valid during their validity period. But when the certificate expires and is renewed, it needs to be retested according to the new standard requirements. 
Response to non-conforming testing: If the initial testing fails, the company needs to make targeted improvements to the product. It is crucial to have a deep understanding of the technical principles behind the standard provisions at this time. 
  
6、 Future Development Trends and Prospects 
  
With the rapid development of technologies such as 5G and the Internet of Things, the technical standards for wireless devices will continue to evolve. Enterprises should establish a normalized standard tracking mechanism, actively participate in technical exchanges with industry associations, and timely grasp policy trends. 
  
Conclusion 
  
The upgrade of SRRC certification standards is both a challenge and an opportunity. Only by actively adapting to new technological requirements can enterprises occupy a favorable position in market competition. Early initiation of product upgrade and transformation work will lay a solid foundation for the sustainable development of the enterprise. 
For a deeper understanding of the latest standard requirements and implementation details for SRRC certification of wireless products, please contact Deng Gong-13925591357 for professional consulting services.