T&M Understanding EMI/EMC Testing and Service Providers
This article explores the world of EMI (Electromagnetic Interference) and EMC (Electromagnetic Compatibility) testing. Understanding these concepts is crucial for ensuring electronic devices function correctly and don’t disrupt other equipment. We’ll also delve into some of the key providers of EMI/EMC testing services and solutions.
Understanding EMI and EMC
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EMI (Electromagnetic Interference): Refers to unwanted electromagnetic energy that can disrupt the performance of electronic devices. EMI testing assesses a system’s resilience against such interference, specifically focusing on radiated emissions – radio frequency waves emitted by the device.
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EMC (Electromagnetic Compatibility): Focuses on a device’s ability to function correctly in its electromagnetic environment without causing interference to other devices. EMC testing examines a system’s vulnerability to conducted emissions, where interference leaks through power lines.
EMI/EMC Standards
Numerous standards dictate the acceptable levels of EMI and EMC. These standards vary depending on the industry and application. Here’s a table outlining some common ones:
| Standard | Description |
|---|---|
| Military | |
| Mil-Std-461 A,B,C,D,E | Military Standard for EMC requirements |
| Mil-Std-1399 | Standard for interface characteristics of shipboard equipment |
| Automotive | |
| CISPR 25 | Vehicle component testing |
| Commercial | |
| FCC Part 15, 18 | FCC rules for radio frequency devices |
| Pre-compliance | |
| RTCA/DO-160 A,B,C,D,E | Environmental conditions and test procedures for airborne equipment |
| GR-1089-CORE | EMC for telecommunication equipment |
| International | |
| EN55011/CISPR 11 | Industrial, scientific and medical equipment |
| EN55014/CISPR 14 | Household appliances and power tools |
| EN55022/CISPR 22 | Information technology equipment |
| EN61000-4-2 | Electrostatic Discharge (ESD) |
| EN61000-4-3 | Radiated RF Immunity |
| EN61000-4-4 | Electrical Fast Transient |
| EN61000-4-5 | Surge |
| EN61000-4-6 | Conducted RF Immunity |
EMI EMC Test Service Providers
Below are some prominent providers offering EMI/EMC testing services and solutions:
| Company | EMI EMC Test Capabilities | Website |
|---|---|---|
| Dayton T. Brown, Inc. | EMI testing, EMC testing to various standards (European, UK, MILITARY, US, etc.) | www.dtbtest.com |
| STQC | Emission (CE/RE) and Immunity (CI/RI) tests | https://www.stqc.gov.in/ |
| Scientific Mes-Technik Pvt. Ltd. | Provides EMI/EMC test solutions including ESD generators, EMI receivers, Radiated RF immunity test equipment, LISNs, conducted RF immunity test equipment, surge generators, near field probes, pre-compliance solutions. | www.scientificindia.com |
| Keysight Technologies | Pre-compliance measurements, EMC compliance tests, EMI/EMC simulations. | www.keysight.com |
| MET Labs | Global leader in EMI/EMC testing, offering EMC site surveys, project management, FCC test & certification, RTCA/DO aeronautics tests, military and wireless testing. | www.metlabs.com |
| National Technical Systems, Inc. | EMC, EMI, and ESD Testing Services | www.nts.com |
| ARAI | EMI/EMC laboratory supporting radiated immunity, radiated/conducted emission, conducted immunity & transient emissions, ESD. | www.araiindia.com |
| Intertek Group plc | EMI & EMC testing lab for various industries including automotive, lighting, medical, telecom, military, etc. | www.intertek.com |
| API Technologies | EMC test lab with equipment for various EMI/EMC tests at commercial and international levels. | eis.apitech.com |
| SAMEER-Centre for Electromagnetics | RE or RS facility with a 10-meter chamber and conducted immunity lab for EMI/EMC testing. | scemcd.gov.in |
| Com-Power | EMC Test Equipments | www.com-power.com |
This list offers a starting point for those seeking EMI/EMC testing services and solutions. Selecting the right provider depends on specific testing needs, industry standards, and geographic location.
