Electromagnetic compatibility (EMC) is the ability of electrical equipment and systems to function acceptably in their electromagnetic environment, by limiting the unintentional generation, propagation and reception of electromagnetic energy which may cause unwanted effects such as electromagnetic interference (EMI) or even physical damage in operational equipment. The goal of EMC is the correct operation of different equipment in a common electromagnetic environment. It is also the name given to the associated branch of electrical engineering.
Conformance testing — an element of conformity assessment, and also known as compliance testing, or type testing — is testing or other activities that determine whether a process, product, or service complies with the requirements of a specification, technical standard, contract, or regulation. Testing is often either logical testing or physical testing. The test procedures may involve other criteria from mathematical testing or chemical testing. Beyond simple conformance, other requirements for efficiency, interoperability or compliance may apply. Conformance testing may be undertaken by the producer of the product or service being assessed, by a user, or by an accredited independent organization, which can sometimes be the author of the standard being used. When testing is accompanied by certification, the products or services may then be advertised as being certified in compliance with the referred technical standard. Manufacturers and suppliers of products and services rely on such certification including listing on the certification body's website, to assure quality to the end user and that competing suppliers are on the same level.
Leica Geosystems based in eastern Switzerland produces products and systems for surveying and geographical measurement (geomatics). Its products employ a variety of technologies including GPS satellite navigation and laser rangefinders to enable users to model existing structures, terrains in computer based systems to high accuracies, often under 1 cm.
National Instruments Corporation, doing business as NI, is an American multinational company with international operation. Headquartered in Austin, Texas, it is a producer of automated test equipment and virtual instrumentation software. Common applications include data acquisition, instrument control and machine vision.
Analog Devices, Inc. (ADI), also known simply as Analog, is an American multinational semiconductor company specializing in data conversion, signal processing and power management technology, headquartered in Wilmington, Massachusetts.
Electromagnetic interference (EMI), also called radio-frequency interference (RFI) when in the radio frequency spectrum, is a disturbance caused by an electromagnetic disturbance(EMD) due to an external source that affects an electrical circuit by electromagnetic induction, electrostatic coupling, or conduction. The disturbance may degrade the performance of the circuit or even stop it from functioning. In the case of a data path, these effects can range from an increase in error rate to a total loss of the data. Both man-made and natural sources generate changing electrical currents and voltages that can cause EMI: ignition systems, cellular network of mobile phones, lightning, solar flares, and auroras. EMI frequently affects AM radios. It can also affect mobile phones, FM radios, and televisions, as well as observations for radio astronomy and atmospheric science.
The Comité International Spécial des Perturbations Radioélectriques was founded in 1934 to set standards for controlling electromagnetic interference in electrical and electronic devices and is a part of the International Electrotechnical Commission (IEC).
A line impedance stabilization network (LISN) is a device used in conducted and radiated radio-frequency emission and susceptibility tests, as specified in various electromagnetic compatibility (EMC)/EMI test standards.
Brüel & Kjær was a Danish multinational engineering and electronics company headquartered in Nærum, near Copenhagen. It was the largest producer in the world of equipment for acoustic and vibrational measurements Brüel & Kjær is a subsidiary of Spectris.
Kistler Group, with headquarters in Winterthur, is an internationally active Swiss group of companies specializing in the field of measurement technology. The Kistler Group is represented at more than 60 locations in over 30 countries and, although owner-managed, is organized as a listed company. The Kistler Group employs a staff of some 2,050 and generated revenue of 361 million Swiss francs in 2020. Approximately 9% of revenue flows back into research and technology every year.
A TEM or transverse electromagnetic cell is a type of test chamber used to perform electromagnetic compatibility (EMC) or electromagnetic interference (EMI) testing. It allows for the creation of far field electromagnetic fields in a small enclosed setting, or the detection of electromagnetic fields radiated within the chamber.
MACOM Technology Solutions is a developer and producer of radio, microwave, and millimeter wave semiconductor devices and components. The company is headquartered in Lowell, Massachusetts, and in 2005 was Lowell's largest private employer. MACOM is certified to the ISO 9001 international quality standard and ISO 14001 environmental standard. The company has design centers and sales offices in North America, Europe, Asia and Australia.
Keithley Instruments is a measurement and instrument company headquartered in Solon, Ohio, that develops, manufactures, markets, and sells data acquisition products, as well as complete systems for high-volume production and assembly testing.
MILMEGA is a company specializing in designing and manufacturing high-power amplifiers for electromagnetic compatibility (EMC) testing. Headquartered in Ryde on the Isle of Wight in England, MILMEGA mainly provides broadband amplifier products with frequency ranges from 80 MHz to 8 GHz, with power levels from 30W - 1kW.
Aeroflex Inc. was an American company which produced test equipment, RF and microwave integrated circuits, components and systems used for wireless communications. Its headquarters were located in Plainview, New York. In May 2014, Aeroflex was acquired by the UK aerospace company Cobham for $1.46 billion.
An RF module is a (usually) small electronic device used to transmit and/or receive radio signals between two devices. In an embedded system it is often desirable to communicate with another device wirelessly. This wireless communication may be accomplished through optical communication or through radio-frequency (RF) communication. For many applications, the medium of choice is RF since it does not require line of sight. RF communications incorporate a transmitter and a receiver. They are of various types and ranges. Some can transmit up to 500 feet. RF modules are typically fabricated using RF CMOS technology.
HCT Co., Ltd. is a South Korean compliance testing and equipment calibration company that also develops particle counters and antennas. Founded in 2000 as Hyundai Calibration & Certification Technologies Co., the company is a spin-off from Hyundai Electronics, the world's second-largest memory chipmaker. HCT has testing and calibration sites in Korea, the United States, and China.
AR Inc. is a Pennsylvania-based provider of microwave instrumentation products. The company was founded in 1969 by Don Shepherd and Dan Roth. It is accredited ISO 17025:2005 by the American Association for Laboratory Accreditation (A2LA).
