EMC testing, also known as electromagnetic compatibility (EMC), refers to the comprehensive evaluation of the interference level (EMI) and anti-interference ability (EMS) of electronic products in electromagnetic fields. It is one of the important indicators of product quality. The measurement of electromagnetic compatibility consists of a testing site and testing instruments
EMS testing items include:
ESD (static electricity) EFT (transient pulse interference) DIP (voltage drop) CS (conduction anti-interference) RS (radiation anti-interference) Surge (surge, lightning strike) PMS (power frequency magnetic field interference)
EMS testing standards and content: 1. The main parameters considered in static electricity testing (IEC61000-4-2) are the range of electrostatic generator: ± 0.2KV - ± 30KV; 2. Radiation immunity test (IEC61000-4-3) mainly considers parameters 3. Fast pulse group test (IEC61000-4-4) mainly considers parameters Test frequency: 5KHz/100KHz Test voltage: 4.0KVmax 4. Lightning surge test (IEC61000-4-5) mainly considers parameters Test sample current: large input current 16Amax; Large test voltage: ± 6.4KV Test waveform: 1.2/50us5. Conducted anti-interference test (IEC61000-4-6) 6. Power frequency magnetic field test (IEC61000-4-8) Main parameters to consider: coil center magnetic field strength: 265A/m7. Voltage drop test (IEC61000-4-11) Main parameters to consider Test voltage: can only test AC220-240 input products
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