What is……?


Most people would call this a FAQ’s page.
The majority of Electrical and Electronic Engineers ( E&EEs ) think that the EMC fraternity has it’s own language and set of abbreviations, which they don’t understand. This page will answer questions like:

What is EMC ? – What is an OATS? – What is ESD?
What is BCI (Bulk Current Injection)? etc.
The answers to these and many other questions can be found on this page

You ask the question and we will get a professional EMC engineer to give you the answer. Put your details and the question in the form at the bottom of the page, and we will publish the answer.

The questions are split into three topics. These are 1) General Questions, 2) Test Facilities and Techniques and 3) Test Instrumentation

General Questions

What is Electromagnetic Compatibility (EMC)?

Electromagnetic Compatibility (EMC) refers to the ability of electronic and electrical systems, devices, and equipment to operate efficiently and without interference in their intended electromagnetic environment.


What is EMP?

An electromagnetic pulse (EMP) is a burst of electromagnetic radiation that can disrupt, damage, or destroy electronic equipment and systems. It can occur naturally, such as from lightning or a solar storm, or it can be generated intentionally as a weapon, known as a High-Altitude EMP (HEMP) or nuclear electromagnetic pulse (NEMP) when produced by a nuclear explosion.


What is a Notified Body?

A notified body is an organization nominated by a government of one of the Member States of Europe and recognized by the European Commission. A notified body is nominated based on specific requirements, such as knowledge, experience, independence and resources to carry out the compliance audits. 

The primary role of a Notified Body is to carry out conformity audit services under the conditions set out in the “New Approach” guidelines in support of CE Mark certification. This normally means that manufacturers are assessed for compliance with essential requirements in each directive. A conformity audit may consist of inspection, quality assurance, type examination or design examination, or a combination thereof. BSI is a notified body for many European directives.

Republished from BSI Netherlands

What is Product Compliance?

Product compliance refers to the adherence of a product to regulatory standards, laws, and requirements set forth by governmental agencies or industry bodies. These regulations can cover various aspects of a product’s design, manufacturing, labeling, packaging, distribution, and disposal.


What is ESD?

( Electrostatic Discharge )

What is EFT?

( Electrical Fast Transient ) 

What are Voltage Dips and Surges?

What are Voltage Transients?

What is Power-line flicker?

What is HIRF?

High Intensity Radiated Fields

What is HEMP?

High-Altitude Electromagnetic Pulses

What is IEMI?

Intentional Electromagnetic Interferences

Test Facilities & Techniques

What is BCI?

Bulk Current Injection

What is a FAR ?

Fully Anechoic room

What is a GTEM Cell?

Gigahertz Transverse Electromagnetic cell

What is an OATS?

Open Area Test Site

What is a Reverberation Chamber?

What is a SAC ?

Semi-Anechoic chamber

What is a screened room?

What is a TEM Cell

Transverse Electromagnetic cell

What is Shielding Effectiveness

Test Instrumentation

What is an Absorbing Clamp?

What is Antenna Factor?

The ratio of the received field strength and the voltages measured at the receiving antenna terminals.

Republished by kind permission of NEMKO

What is an Artificial Mains Network?

Used to supply the mains electrical voltage (either AC or DC) and current to the equipment under test (EUT). The AMN also establishes a measurement point for conducted emissions when stabilizing the impedance, inductance, and capacitance of the power supplied to the EUT

Republished by kind permission of NEMKO

What is a CDN?

Coupling Decoupling Network

What is a Two-Line V-Network ?

What is a LISN

Line impedance stabilization network

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