The testing site can be divided into isolation rooms (including TEM/TEM Cell and other integrated electromagnetic wave EMC testing rooms), anechoic rooms, and outdoor open area test sites (OATS)
Open site OATS
OATS requires a flat and open area, away from building landmarks, towers, wires, trees, underground cables, and metal pipelines, with a minimal background of environmental electromagnetic interference (such as general electromagnetic compatibility standards and specifications requiring at least 6dB below the allowable limit) In the early days, the measurement of EMC radiation emissions and sensitivity RS was conducted in open spaces. Due to the widespread use of various electronic and electrical products in people's daily lives, with the rapid development of electronic and electrical engineering, the electromagnetic noise environment continues to deteriorate. It is now difficult to find open spaces that meet standards for measurement
Anechoic chambers (semi anechoic chambers, full anechoic chambers)
One and half anechoic chambers
are used for EMC measurement and electromagnetic radiation sensitivity measurement. The main performance indicators are measured using Normalized Field Attenuation (NSA) and Test Surface Uniformity (FU)
Minimum practical size anechoic chamber:
The size is approximately 7m * 3m * 3m, mainly used for RF immunity, emission estimation, and free space emission testing.
. Suitable for frequencies ranging from 26MHz to 1GHz, suitable for internal testing in small and medium-sized enterprises3m anechoic chamber:
The size is approximately 9m * 6m * 6m, used for products with RF immunity and emission testing dimensions below 2m.
. It is a widely used experimental site internationally to replace open fields10m anechoic chamber:
The size is approximately 19m * 12m * 9m, used for RF immunity and emission testing, suitable for larger products.
. The price is very expensive and can test other special equipment such as carsSecondly, a fully anechoic chamber is used to simulate the propagation environment in free space.
. Mainly used for parameter measurement of microwave antenna systems
RS radiation immunity interference
Use a 3-meter full anechoic chamber testing site that fully meets the latest standards, with a testing frequency of 80MHz-6GHz; EFFIELD STRENGTH can reach 3V/m; 10V/m; 20V/m; The uniformity of field strength fully meets the requirements of IEC61000-4-3. R& The S TS9980 radio and television audio anti-interference testing system can meet the requirements of different standards in different countries, such as DVB-T, - H, - C, - S1, - S2, ATSC, DAB, etc
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBaijian and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China