EMC Testing Services for Compliance

What Is EMC Testing?

Electromagnetic compatibility (EMC) testing has two halves. Emissions testing measures how much electromagnetic energy your device gives off; immunity testing checks whether it keeps working when exposed to disturbances such as static discharge, power surges, or nearby radio signals. Most markets regulate emissions, and many also regulate immunity. For a deeper primer, read our EMI and EMC testing basics guide.

Emissions Testing

Emissions testing confirms that your product stays within the limits for the markets where it will be sold. Our accredited scope includes:

• FCC Part 15 Subpart B: digital devices and other unintentional radiators sold in the U.S., including products that use the Supplier’s Declaration of Conformity
• ICES-003: Canada’s emissions standard for information technology equipment
• CISPR 11: industrial, scientific, and medical (ISM) equipment
• CISPR 32: multimedia equipment, including IT, audio, and video products
• CISPR 25: emissions from automotive components and modules

We also test to the EN and AS/NZS versions of these standards for Europe and Australia/New Zealand. Radiated emissions testing takes place in our 3-meter semi-anechoic chamber, while conducted emissions testing measures the electrical noise your product sends back onto its power lines.

EMC Immunity Testing

EMC immunity testing shows that your product keeps operating as intended in a real electrical environment. Our lab performs:

• IEC 61000-4-2: electrostatic discharge (ESD)
• IEC 61000-4-3: radiated RF immunity, up to 10 V/m through 6 GHz
• IEC 61000-4-4: electrical fast transients and bursts
• IEC 61000-4-5: surge
• IEC 61000-4-6: conducted RF immunity
• IEC 61000-4-8: power frequency magnetic fields
• IEC 61000-4-11: voltage dips, short interruptions, and voltage variations

These tests support product family standards such as CISPR 35 for multimedia equipment, IEC 61326 for laboratory equipment, IEC 60601-1-2 for medical electrical equipment, and the IEC 61000-6 generic standards for residential and industrial environments.

Harmonics and Flicker Testing

Equipment that connects to public low-voltage power networks often must also meet IEC 61000-3-2, which limits harmonic currents, and IEC 61000-3-3, which limits voltage fluctuations and flicker. Both are common requirements for CE marking, and we test to them alongside your emissions and immunity program.

Inside Our EMI Testing Lab

As an EMI testing lab accredited to ISO/IEC 17025 by the ANSI National Accreditation Board (ANAB), we publish every standard we are accredited for on our accredited lab scope page. Our 3-meter semi-anechoic chamber provides a shielded, controlled environment for repeatable radiated measurements.

Because emissions, immunity, and harmonics testing all happen in the same EMC testing lab, one test plan can cover your FCC, Canadian, and EU requirements. You are welcome to have a representative witness testing, or you can tour our lab online before your product arrives.

Pre-Scan Service: Find Problems Before Formal Testing

A pre-scan is an informal emissions or immunity check run during development, before your product enters formal EMC compliance testing. It shows where your design stands against the limits while changes are still easy to make: a filter, a ferrite, a layout revision, or a shielding tweak. Pre-scanning early lowers the risk of a failed formal test and a second round of lab time.

EMC Testing FAQs

Is EMC Testing Required in the US?

Yes, for emissions. Most electronic products with digital circuitry must meet FCC Part 15 emissions limits before they can be marketed in the U.S., through either the Supplier’s Declaration of Conformity or certification; ISM equipment falls under FCC Part 18. The FCC does not set general immunity requirements, but immunity testing is required for CE marking in the EU and is often required by industry standards, such as IEC 60601-1-2 for medical devices, and by customer contracts.

What Is the Difference Between EMI and EMC Testing?

EMI testing measures the electromagnetic interference a device emits. EMC testing is broader: it covers those emissions plus the device’s immunity to interference from its surroundings.

Do I Need EMC Testing for CE Marking?

Yes. The EU EMC Directive applies to most electrical and electronic equipment, and conformity is usually shown by testing to harmonized standards such as EN 55032 and EN 55035. Radio products fall under the Radio Equipment Directive, which covers EMC through the EN 301 489 series. Learn more about our CE testing and RED testing services.

Which EMC Standards Apply to My Product?

That depends on what the product does, where it will be used, and where it will be sold. A Wi-Fi-enabled medical monitor sold in the U.S. and the EU, for example, may need FCC Part 15, EN 301 489, and IEC 60601-1-2 testing in one program. Our engineers identify the applicable standards when they prepare your quote, so your test plan covers the right requirements from the start.

How Long Does EMC Testing Take?

Most test programs run from a few days to a couple of weeks, depending on the number of standards and the complexity of the product. A pre-scan during development helps keep that schedule on track.

How Much Does EMC Testing Cost?

Cost depends on the standards involved, the number of operating modes, and whether retesting is needed. Our guide to FCC certification cost explains the factors that drive most testing quotes. If your product includes a radio, see our FCC testing lab page for the full certification process.

Request a Quote for EMC Testing Services

Tell us about your product, its power source, and your target markets. Our engineering team will identify the right emissions, immunity, and harmonics tests and send you a free quote.

Why Work With Compliance Testing?

Compliance Testing offers you convenience throughout the entire compliance testing process. Our services are available at competitive prices to help you obtain CE marking without breaking the bank.

Types of Regulatory Testing

We Offer EMI & EMC Testing for Devices of All Types: