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WELCOME to the WHAT IS…..? page

Sailors have their own unique vocabulary. For instance, they say “heads” instead of toilets, “fore and aft” for front and back, “port” and “starboard” for left and right, and “halyards” or “sheets” instead of lines or ropes. There are many more examples, which can be confusing for non-mariners.

Similarly, experienced EMC engineers use specialized terms like LISNs, CDNs, FARs, OATS, BCI, and ESD, which can be perplexing for electrical and electronic engineers.

This page is designed to clarify these terms and make the concepts easier to understand.

To pose a question simply put your name and email address, plus your question in an email to findatesthouse@gmail.com

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)?

ANSWER
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……..LINK TO FULL ANSWER


What is EMP?

ANSWER
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……LINK TO FULL ANSWER..


What is a European Directive?

ANSWER
A European Directive is a legal act issued by the European Union (EU) that sets out specific objectives that all EU member states must achieve through their national laws. Directives are one of the primary instruments used by the EU to harmonize laws and regulations across its member states…….LINK TO FULL ANSWER..

What is a Notified Body?

ANSWER
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?

ANSWER
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……LINK TO FULL ANSWER..


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


To pose a question simply put your name and email address, plus your question in an email to findatesthouse@gmail.com

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


To pose a question simply put your name and email address, plus your question in an email to findatesthouse@gmail.com

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


To pose a question simply put your name and email address, plus your question in an email to findatesthouse@gmail.com