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SRRC (short range radio certification) is the abbreviation of China's short-range radio frequency equipment certification, the full name is short-range radio transmitting equipment type approval certificate.
SRRC certification is one of the measures for the supervision of short-range radio equipment formulated in China in accordance with the Radio Management Regulations. Short-range radio frequency equipment refers to all kinds of radio equipment with an operating frequency of less than 30MHz, a transmitting power of not more than 100mW, and a communication distance of generally less than 100 meters. This type of equipment needs to obtain SRRC certification before it can be produced, sold and used in China.
The purpose of SRRC certification is to supervise and manage short-range RF equipment to prevent the loss of control and interference of RF equipment and ensure radio wave order and radio wave safety. The specific certification requires that the technical indicators such as transmitting frequency, transmitting power, modulation mode, and operation mode of the equipment comply with the provisions of national standards.
To apply for SRRC certification, you need the following materials:
1. Application form: Basic information such as equipment name, specification and model, and production unit.
2. Product Manual: Detailed technical information such as technical characteristics, interface definitions, and function descriptions of the equipment.
3. Technical standards and test reports: Test reports that prove that the technical indicators of the equipment meet the corresponding standards.
4. Prototype: The device needs to provide a prototype for testing.
5. Others: Such as function descriptions, interface definitions, application environment descriptions, etc.
The main procedures for SRRC certification are as follows:
1. Preparation of materials: Prepare the necessary materials such as application forms, product manuals, and test reports mentioned above. The completeness and accuracy of the data have a direct impact on the certification results.
2. Fill out the application form: Fill out the application form based on the specific information of the equipment, such as model number, transmitting frequency, etc., as the official document for the certification application.
4. Data review: The certification conducts a detailed review of the provided product information to check its compliance with technical standards.
5. Product testing: Inspection and certification conducts technical index testing on prototypes or products, and tests radio wave frequency, power, interference limit and other items. Certification can only be obtained after passing the test.
6. Certification decision: The Ministry of Industry and Information Technology's Institute of Electronics will evaluate the equipment certification qualification based on the data review and product test results. Those who pass the assessment will be issued a certificate.
7. Certificate issuance: SRRC certification certificates are generally valid for 5 years. After obtaining the certificate, the manufacturer can legally produce, sell and use equipment in China.
SRRC certification testing project
1. Transmitting frequency: Check whether the working load frequency and frequency band of the equipment meet the requirements of the certified frequency table, and whether the frequency stability of the transmitted signal meets the requirements.
2. Transmit power: Detect whether the transmit power of the equipment on each frequency carrier meets the transmit power limit of the corresponding frequency band.
3. Occupied bandwidth: Detects whether the actual occupied bandwidth of the transmitted signal exceeds the allowable bandwidth of the corresponding frequency.
4. Waveform quality: Check whether the modulation mode, phase noise, fifth-order cut-off frequency (-3dB) and other indicators of the transmitted signal meet the requirements.
5. Spectral power density: For devices that generate broadband diffuse signals, detect whether their maximum spectral power density within the specified frequency range is below the limit value.
6. Transmission time: Detect whether the transmission time and period of equipment with intermittent transmission comply with the provisions of the standard.
7. Number of Transceiver Channels: Detects whether the maximum number of transceiver channels of the device exceeds the number allowed by the standard.
8. Immunity: Check whether the anti-interference performance of the equipment meets the standard requirements to ensure its normal operation in a strong electromagnetic interference environment.
9. Harmonic radiation: Detect whether the intensity of the second harmonic and third harmonic in the transmitted signal is lower than the limit specified in the standard.
10. Electromagnetic compatibility: Detect whether the degree of electromagnetic interference of the equipment to the surrounding environment meets the requirements allowed by the standard.
11. RF radiation measurement: Conduct radiofrequency radiation measurement of equipment in the near and far fields, and whether the results meet human safety standards.
SRRC certification processing cycle
The overall processing cycle of SRRC certification is usually about 3 months, depending on the type of equipment and the work progress of the Ministry of Industry and Information Technology's Electronics Institute.
Among them, it usually takes about 1 month to prepare materials and prototype testing, and it usually takes 2-4 months for the audit and testing process of the Ministry of Industry and Information Technology.
The main significance and functions of SRRC certification include:
1. Ensuring order in radio waves. SRRC certification strictly controls the frequency, power, and operating mode of short-range radio frequency equipment, ensuring that the equipment does not cause radio interference and maintaining a clean radio wave environment.
2. Protecting public safety. SRRC certification tests the equipment's immunity and emission limits, ensuring that its radiated electromagnetic fields do not pose a danger to humans or the environment.
3. Reducing radio wave contention. Before issuing frequency licenses, SRRC certification evaluates available spectrum to avoid frequency sharing and conflicts as much as possible, ensuring the normal operation of different devices.
4. Regulating market order. Only short-range radio frequency equipment that has obtained SRRC certification can be sold and used within China, which helps regulate the electronics market and suppress the circulation of counterfeit products.
5. Protecting user interests. SRRC certification demonstrates that the equipment’s electromagnetic compatibility and electrical safety meet national standards, ensuring that it will not cause electromagnetic interference or safety hazards to users or other devices during use.
6. Promoting technological progress in the industry. The technical requirements of SRRC certification encourage companies to continuously improve product design and manufacturing levels to obtain necessary market access qualifications, thereby promoting technological advancement in the electronic information industry.
7. Supporting national policies. SRRC certification is one of the radio management measures implemented by the Ministry of Industry and Information Technology’s Institute of Electronics, aimed at enforcing national regulations on radio and electronic information technology and assisting the state in planning and managing radio frequency resources.
