Glossary

all items 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

A.C.E.C.: Advisory Committee on Electromagnetic Compatibility
A/D: Analog/Digital
A/m: Ampere per meter (unit of magnetic field strength)
Absorber: Material
AC: Alternating current; Administrative circular
ACB: Association of Competent Bodies
AE: Auxiliary equipment
AF: Audio frequency
AF: Antenna factor
AFC: Automatic frequency control
AGC: Automatic gain control
ALC: Absorber lined chamber
AM: Amplitude modulation
AMN: Artificial mains network
Anechoic: A shielded room which is covered with HF absorbers and as such has a completely homogeneous field
ANL: Automatic noise limiter
ANSI: American National Standards Institute
APD: Amplitude probability distribution
AR: Arrester
ASIC: Application specific integrated circuit
ASU: Automatic interference suppression
ATE: Automatic test equipment
B-field: Magnetic flux field density (in Teslas)
BABT: British Approvals for Telecommunications
BALUN: Balanced to unbalanced (transformer)
BCI: Bulk current injection
BCIT: Bulk current injection test
BD: Lightning protection diode
BEM: Boundary element method
BEMS: Bioelectromagnetics Society (devoted to electric effects in living organisms)
BS: British Standard
BSA: Lightning protection system
BSI: British Standards Institute
Cage of Faraday: See shielded room
CB: Citizens band (radio)
CC: Compilation of comments on CD
CCIR: [3] Consultatif International des Radiocommunications
CCIR: [1] Comit Consultatif International Radiocommunication
CCIR: [2] International Consulting Committee for Radiocommunications
CCITT: [2] International Consulting Committee for Telegraphy and Telephony (Geneva)
CCITT: [1] Comité Consultatif International Télégraphique et Téléphonique
CD: Committee draft for comments
CDM: Charged device model
CDN: Coupling/decoupling network
CDT: Conducted disturbance test
CDV: Committee draft for vote
CE: Communauté Européenne / European Community (see CE-Marking)
CE: Conducted emission
CE-Marking: The mark consists of the letters CE and indicates compliance with all relevant EC-directives which concern the marked product. It means that the natural or juristic person which executed or ordered marking has made sure that the good complies with all harmonized Community directives and has passed all conformity testing procedures required.
CECC: CENELEC Electronic Components Committee
CEM: Compatibilité electromagnétique (French) - Electromagnetic compatibility
CEN: [2] European Standardization Committee
CEN: [1] Comité Européen de Normalisation
CENELEC: Comité Européen de Normalisation Electrotechnique (European Committee for Electrotechnical Standardization)
CEOC: Confédération Européenne des Organismes de Contrôle (European Confederation of Independent Inspection Bodies)
CEU: Commission of the European Union
CI: Conducted interference
CIGRE: [2] International conference for high-voltage networks
CIGRE: [1] Conference internationale des grands réseaux electriques à haute tension
CIP: Current injection probe
CISPR: Comité international spécial des perturbations radioélectriques
CM: Common mode
CMC: Common mode coupling
CMI: Common mode interference
CMR: Common mode rejection (CMR/dB = 20 log CMRR)
CMRR: Common mode rejection ratio
CMV: Common mode voltage
CNC: Common mode to normal mode conversion
CRD: Current regulative diode
CS: Conducted susceptibility
CSA: Canadian Standards Association
CUT: Circuit under test
CW: Continuous waves
CX: Coaxial
D/A: Digital to analog
DA: Draft agenda
DAC: Digital to analog converter
DAR: German Accrediting Council (central organ covering all federal and private industrial activities to determine competence of test laboratories and certifiers)
DAS: Disturbance analysis system
dB: Decibel
dBc: dB beyond carrier level
dBm: dB above one milliwatt
dBuV: dB above one microvolt
DC: +A131Direct current
DCM: Direct current noise margin
DCS: Digitally coded squelch
DEMP: Dispersed EMP
DF: Decoupling filter
DIN: Deutsches Institut fuer Normung
DIS: Draft international standard
DM: Direct mode
DMC: Differential mode coupling
DNL: Dynamic noise limiter
DNR: Dynamic noise reduction
doa: Date of announcement
dop: Date of publication
dor: Date of ratification
dow: Date of withdrawal
DRA: Defence Evaluation & Research Agency
DTI: Department of Trade and Industry
DUT: Device under test
E-Field: Electric field
EAF: Electrical antenna factor
EC Declaration of Conformity: Declaration of a supplier certifying the compliance of his product with a particular European standard. In accordance with the Electromagnetic Compatibility Act
ECE: Economic Commission for Europe
ECMA: European Computer Manufacturers Association
EEA: European Economic Area (The EEA consists of the member states of the European Community and the EFTA member states.)
EED: Electro-explosive devices
EEE: E3
EEN: Environmental electromagnetic noise
EER: European Economic Room
EES: Electromagnetic environment simulator
EFT: Electrical fast transient
EFT/B: Electrical fast transient burst
EFTA: European Free Trade Association
EGB: Electrostatic sensitive components
EHF: Extremely high frequency
EIA: Electronic Industries Association
Electro-sensitivity: A vegetative reaction to extremely low fields
ELF: Extremely low frequency
ELSECOM: European Electrotechnical Sectoral Committee for Testing and Certification
EM: Electromagnetic environment
EMAS: Emission measurement automatic system
EMB: Electromagnetic influence
EMC: Electromagnetic compatibility
EMC-Directive of the EC: Directive harmonizing standards concerning EMC-related questions in the European Economic Area (EEA). It is covering devices which can cause electromagnetic interferences or which can be influenced by electromagnetic interferences and lays down EMC-protection limits. All electric and electronic appliances
EMCAB: Electromagnetic Compatibility Advisory Board
EMCDAS: Electromagnetic compatibility data acquisition system
EMCNET: The world-wide focal point for EMC/EMI news
EMCS: Electromagnetic Compatibility Society (within the IEEE)
EME: Electromagnetic emission
EME: Electromagnetic environment
EMI: lectromagnetic interference
EMI: Electromagnetic interference
EMIC: Electromagnetic interference control
EMIE: Electromagnetic interference effects
EMISMS: Electromagnetic interference safety margins
Emission: A HF field emitted from a certain source
EMP: Electromagnetic pulse
EMR: Electromagnetic radiation
EMRE: Electromagnetic radiation effects
EMS: Electromagnetic susceptibility
EMSCAN: Electromagnetic scanner
EMV: Elektromagnetische Vertraeglichkeit
EMVU: Electromagnetic compatibility environment
EMVV: Elektromagnetische Vertraeglichkeitsverordnung / Electromagnetic Compatibility Directive (Austrian EMC law)
EN: European Standard (see CENELEC)
Endo-NEMP: Endo-atmospheric nuclear electromagnetic pulse
ENI: Equivalent noise input
ENR: Excess noise ratio
ENR: Equivalent noise resistance
ENV: European pre-standard (Pre-standards are created as provisional standards for future standards in order to gather experience in its application. National standards can be maintained simultaneously. After three years
EOS: Electrical overstress
EOTC: European Organization for Testing and Certification
EPA: ESD-protected area
Equipment Under Test: The electronic device which is currently tested for immunity or emission
ERP: Earth reference plane
ERP: Effective radiated power
ESD: Electrostatic discharge
ESDCP: ESD control program
ESDS-partss: ESD-sensitive part
ESHG: Home and building electric systems
ETS: European Telecommunication Standard
ETSI: European Telecommunications Standards Institute
EU: European Union
EUT: Equipment under test
Exo-NEMP: Exo-atmospheric nuclear electromagnetic pulse
F/V: Frequency to voltage
Fast fourier transform (FFT): Mathematical method to calculate the frequency spectrum from a number of analog to digital (A/D) conversions (conversion from time domain to frequency domain).
FCC: Federal Communications Commission
FDL: Ferrite diode limiter
FDM: Finite difference method
FE: Foundation grounding
FEB: The Swedish Association for the Electrically and VDT Injured
FEM: Finite element method
Ferrite: Material which is known for its property to absorb high frequent radiation well.
FFT: See fast fourier transform
FPC: Filter pin connector
FPC: Ferrite polymer composite
FS: Fine protection (surge protector)
GHz: Gigahertz
GICs: Geomagnetic induced currents
GLC: Ground-loop coupling
GND: Ground
GPR: Ground potential rise
GRP: Ground reference plane
GS: Coarse protection (surge protector)
GTEM: Gigahertz transverse electromagnetic (cell)
H: Henry
H-Field: Magnetic field
HA-NEMP: High altitude nuclear electromagnetic pulse
HAEMP: High altitude EMP
HBES: Home and building electronic systems
HBM: Human body model
HF: High Frequent
Homogeneous Field: A HF field that has the same strength in each position in a certain pre-defined space
HP: High pass
HPE: High power electromagnetics
HPM: High power microwaves
HPPM-generator: High power pulsed microwave generator
HV: High voltage
Hz: Hertz
I: Interference
I.E.C.: International Electrotechnical Commission
I.E.E.E.: Institute of Electrical and Electronics Engineers
I.F.: Intermediate frequency
I.N.F.: Document for information
I.N.R.: Interference-to-noise ratio
I.S.: International Standard
I.S.M.: Industrial
I.S.O.: International Standardization Organization
I.T.U.: International Telecommunications Union
IAP: Intrasystem analysis program
ICAE: International Conference on Atmospheric Electricity
ICLP: International Conference on Lightning Protection
IEC: International Electrotechnical Commission
IECEE: IEC System for conformity testing to standards for safety of electrical equipment
IEEE: The Institute of Electrical and Electronics Engineers
IEMCAP: Intrasystem electromagnetic compatibility analysis program
IEMP: Internal EMP
IFRB: International Frequency Registration Board
IFU: International Telecommunication Union
ILIL: Input longitudinal interference loss
Immunity: The resistance of a certain piece of electronic equipment against external high frequency fields.
IMRR: Isolation mode rejection rate
INIRC: International Non-Ionizing Radiation Committee
INL: Internal noise level
IPC: n-plant point of coupling
IRCC: International Radio Consultative Committee
IRD: Incidental radiation devices
IRPA: International Radiation Protection Association
IRTO: International Radio and Television Organization
ISM: Industrial scientific and medical (equipment)
ISO: International Organization for Standardization
ITE: Information technology equipment
ITU: International Telecommunication Union
JEDEC: Joint Electron Device Engineering Council
kA: Kiloampere (1000A)
kHz: Kilohertz (1000Hz)
KNOSPE: Short-term low-ohmic star grounding (fault selection method for mains networks)
L.E.M.P.: Lightning electromagnetic pulse
L.I.S.N.: Line impedance stabilization network
LA: Lightning arrester
LAEMP: Low altitude EMP
LC: Line conditioner
LCL: Longitudinal conversion loss
LCTL: Longitudinal conversion transfer loss
LED: See light emitting diode
LEMP: Lightning electromagnetic pulse
LF: Low frequency (30 - 300kHz)
LFS: Quenched spark gap (overvoltage protector for low-voltage installations)
LIL: Longitudinal impedance loss
LISN: Line impedance stabilization network
LITL: Longitudinal interference threshold level
LNA: Low noise amplifier
LPE: Lightning pulse environment
LPPE: Lightning protection potential equalization
LPS: Lightning protection system
LS: Lightning stroke
LSL: Low speed logic
LSV: Low speed distortion proof connection (for data transmission)
LVD: Low voltage directive on 31 December 1996
LVPI network: Low voltage power installation network
M.A.F.: Magnetic antenna factor
M.L.V.: Multi layer varistors
MEB: Main equipotential bonding
MEMPS: Mobile electromagnetic pulse simulator
MF: Medium frequency (300 - 3000kHz)
mH: Millihenry
MHDEMP: Magnetohydrodynamic EMP
MHz: Megahertz
MIL-STD: Military standard
MM: Machine model
MOM: Method of moments
MOV: Metal oxide varistor
MPG: Law on medical products
MS: Mains signalling
N.B.: Narrow band
N.E.M.P.: Nuclear electromagnetic pulse
NACSEM: National COMSEC/EMSEC information memorandum (TEMPEST)
NACSI: National COMSEC instruction (TEMPEST)
NAE: National Academy of Engineering
NAMAS: National Measurement and Accreditation Service
NASA: National Aeronautics and Space Administration
NEMF: Natural electromagnetic field
NEMP: Nuclear electromagnetic pulse
NEP: Noise equivalent power
NF: Noise factor
NIST: National Institute of Standards and Technology
NL: Noise limiter
NMR: Normal mode rejection
NMV: Normal mode voltage
NOSPE: Low ohmic star point grounding (in electric energy systems)
NPL: National Physics Laboratory (UK)
NPT: Noise protection transformer
NR: Noise ratio
NSA: Normalized site attenuation
NVLAP: National Voluntary Laboratory Accreditation Program (USA)
OATS: Open area test site
OIML: Organisation internationale de metrologie legale / International organization for legal measuring
OIRT: Organisation internationale de radiodiffussion et télévision international
OJEC: Official Journal of the European Communities
OVP: Overvoltage protection
P.Q.: Primary Questionnaire
PA: Potential equalization
PARD: Periodic and random deviation
PC: Point of coupling
PCC: Point of common coupling
PE: Protective earth
PEL: Permissible exposure limit
PELV: Protective extra low voltage
PEMF: Pulsating magnetic fields
PFC: Power factor correction
PFVP: Proper functioning verification procedures
PLC: Power line conditioner
PLDA: Power line disturbance analyzer
PLHR: Power line harmonic radiation
PLR: Power line radiation
PLSN: Power line stabilization network
POE: Point of entry
PPED: Personal protective equipment directive
PRF: Pulse repetition frequency
PSR: Power supply rejection
PSRR: Power supply rejection rate
PTF pastes: Polymer thick film pastes
QA: Quality assurance
QPA: Quasi-peak adapter
QP or Q-P: Quasi-peak
R: Radiation
R.M.: Report of meeting
R.M.S.: Root mean square
R.Q.: Result of questionnaire
R.V.C.: Result of vote of CDV
R.V.D.: Report of voting on (F)DIS
R.V.N.: Report of voting on NWP
R.V.S.: Report of voting on SR
RADHAZ: Radiation hazards
RCTL: Rectangular coaxial transmission line
RE: Radiated emission
RF: Radio frequency
RFC: Radio frequency choke
RFI: Radio frequency interference
RIF: Radio-influence field
RIV: Radio influence voltage
rms: Root mean square value
RRD: Restricted radiation devices
RS: Radiated suscept
S.C.: Sub-Committee
S.E.: Shielding effectiveness
S.E.M.P.: Switching electromagnetic pulse
S.N.R.: Signal-to-noise ratio
S.R.: Systematic review of IS system reference
S/N: Signal-to-noise ratio
SAA: Standards Australia
SAE: Society of automotive engineers
SAR: Specific absorption rate
SCC: Standards Council of Canada
Schaffner: safety for electronic systems
SELV: Safety extra low voltage
SEMP: Switching electromagnetic pulse
SERP: System earth reference point
SGEMP: System generated EMP
SHA: Special handling area
SHF: Super high frequency (3 - 30GHz)
Shielded Room: Room constructed from metal with no hole larger than the wavelength of the maximum frequency. Rooms like this have the property of shielding the interior from external fields like lightning or high frequency radiation.
SN: Signal-to-noise ratio
SNR: Signal-to noise ratio
SPE: Star point grounding (in electric energy systems)
SPG: Single-point ground
SPU: Surge protection unit
SR-NRW: Rectifier mains feedback
SREMP: Source region EMP
SVP: Surge voltage protector
SWC: Surge withstand capability
SZL: Logic proof against interferences and destruction
T.C.: Technical Committee
T.E.M.: Transverse electromagnetic
T.V.S.: Transient voltage suppresser
TAZ-Diode: Transient absorption Z-Diode
TCF: Technical construction file
TCFR: Technical construction file route
TCS-model: Travelling current source model
TDR: Time domain reflectometry
TEM-Cell: Transverse electromagnetic cell
TEMPEST: Transient electromagnetic pulse emanation standard
TEMPEST: Temporary emanation and spurious transmission
TEMPS: Transportable electromagnetic pulse simulator
TGPR: Transient ground potential rise
THD: Total harmonic distortion (factor)
TLM: Transmission line model
TMIS: Transmission impairment measuring set
TN-C-Network: TN-network where the protective conductor serves as neutral conductor simultaneously
TN-C-S-Network: TN-network with both combined and separate neutral and protective conductors
TN-Network: TN (terre neutre) Electric network where at least one point of the power circuit is directly grounded (in most cases the star point). The cases of connected devices are connected to the grounded points via a protective conductor. TN networks are subdivided into TN-C-Networks
TN-S-Network: TN-network with separate neutral and protective conductors
TPD: Terminal protective device
TPD: Transient protective device
TREE: Transient radiation effects on electronics
TRIGATEM-chamber: Funnel-shaped shielded absorber TEM-chamber (Structure similar to a GTEM-chamber. Additionally
TSD: Transient suppression devices
TVI: Television interference
TVS: Transient voltage suppresser
U.A.P.: Unique acceptance procedure
UFB: Surge protector fine barrier
UHF: Ultra high frequency (300 - 3000MHz)
UIT: Union Internationale des Télécommunications / International Telecommunication Union
UL: Underwriters Laboratories
ULF: Ultra low frequency (300Hz - 3kHz)
UNIPEDE: [1] Union internationale des producteurs et distributeurs d'énergie électrique
UNIPEDE: [2] International Union of Power Producers and Distributors
UPS: Uninterrupted power supply
URF: Unwanted radio-frequency
URSI: Union Radio Scientifique Internationale
USM: Universal spike monitor
USV: Uninteruptable power supply (array of switches
UVP: Environmental tolerance measurement
UVV: Accident prevention regulations
VA: Valve arrester
VDE: Verband Deutscher Elektrotechniker e.V.
VHF: Very high frequency (30 - 300MHz)
VLF: Very low frequency (3 - 30kHz)
VRD: Voltage regulative diode
VWSR: Voltage standing wave ratio
W.A.R.C.: World Administrative Radio Conference
X1: Capacitor for across-the-line IEC664 installation category 111
X2: Capacitor for across-the-line
XT: Crosstalk
Y1: Capacitor for bridging of double or reinforced insulation
Y2: Capacitor for bridging of basic or supplementary insulation
ZE: Central ground point