Schaffner Glossary

Listview for the terms

  • A
    • A/D
    • Analog/Digital
    • A/m
    • Ampere per meter (unit of magnetic field strength)
    • Absorber
    • Material, often ferrite, which is capable of absorbing HF radiation
    • AC
    • Alternating current; Administrative circular
    • ACB
    • Association of Competent Bodies
    • AE
    • Auxiliary equipment
    • AF
    • Antenna factor
    • AF
    • Audio frequency
    • 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
    • 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
  • C
    • Cage of Faraday
    • See shielded room
    • CB
    • Citizens band (radio)
    • CC
    • Compilation of comments on CD
    • CCIR
    • [1] Comité Consultatif International Radiocommunication
    • CCIR
    • [2] International Consulting Committee for Radiocommunications
    • CCIR
    • [3] Consultatif International des Radiocommunications
    • CCITT
    • [1] Comité Consultatif International Télégraphique et Téléphonique
    • CCITT
    • [2] International Consulting Committee for Telegraphy and Telephony (Geneva)
    • 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 har
    • CECC
    • CENELEC Electronic Components Committee
    • CEM
    • Compatibilité electromagnétique (French) - Electromagnetic compatibility
    • CEN
    • [1] Comité Européen de Normalisation
    • CEN
    • [2] European Standardization Committee
    • CENELEC
    • Comité Européen de Normalisation Electrotechnique (European Committee for Electrotechnical Standardization), located in Brussels, in charge of harmonizing electro-technical standards in the frame of the European Community and the European Economic Area EE
    • CEOC
    • Confédération Européenne d'Organismes de Contrôle (European Confederation of Independent Inspecting Bodies)
    • CEU
    • Commission of the European Union
    • CI
    • Conducted interference
    • CIGRE
    • [1] Conference internationale des grands réseaux electriques á haute tension
    • CIGRE
    • [2] International conference for high-voltage networks
    • 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
    • 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
    • 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, the declaration has to contain the following: the description of the corresponding device or
    • 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, Electromagnetic environmental effects
    • 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, extend to which electrical appliances can withstand each others radiated fields
    • 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-protec
    • EMCAB
    • Electromagnetic Compatibility Advisory Board
    • EMCDAS
    • Electromagnetic compatibility data acquisition system
    • EMCNET
    • The world-wide focal point for EMC/EMI news, information, products and services.
    • EMCS
    • Electromagnetic Compatibility Society (within the IEEE)
    • EME
    • Electromagnetic emission
    • EME
    • Electromagnetic environment
    • EMI
    • Electromagnetic interference, extend to which one device's radiated field influences the proper functioning of another device.
    • EMIC
    • Electromagnetic interference control
    • EMIE
    • Electromagnetic interference effects
    • EMISMS
    • Electromagnetic interference safety margins
    • Emission
    • A HF field emitted from a certain source, most often a piece of electronic equipment.
    • 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
    • Equivalent noise resistance
    • ENR
    • Excess noise ratio
    • 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, pre-standards have to be converted int
    • 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
    • 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
    • Ferrite polymer composite
    • FPC
    • Filter pin connector
    • FS
    • Fine protection (surge protector)
  • G
    • 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
    • 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, electro magnetic radiation with a frequency higher than approximately 1MHz
    • 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
    • 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, scientific and medical (equipment)
    • 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
  • J
    • JEDEC
    • Joint Electron Device Engineering Council
  • K
    • kA
    • Kiloampere (1000A)
    • kHz
    • Kilohertz (1000Hz)
    • KNOSPE
    • Short-term low-ohmic star grounding (fault selection method for mains networks)
  • L
    • 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, the CE marking directive's (93/68/EEC) transition period ended meaning that a single design of CE mark applies to all the so-called new approach directives. Two directives for which this is particularly significa
    • LVPI network
    • Low voltage power installation network
  • M
    • 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
    • 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)
  • O
    • 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
    • P.Q.
    • Primary Questionnaire, CENELEC-procedure to determine interest to establish an IEC-norm as an European norm
    • 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
  • Q
  • R
    • R
    • Radiation
    • R.M.
    • Report of meeting
    • R.M.S.
    • Root mean square, effective value of voltage, current or power
    • 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, effective value of voltage, current or power
    • RRD
    • Restricted radiation devices
    • RS
    • Radiated suscept
  • S
    • 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
    • T.C.
    • Technical Committee
    • T.E.M.
    • Transverse electromagnetic, dominant field
    • 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
    • Temporary emanation and spurious transmission
    • TEMPEST
    • Transient electromagnetic pulse emanation standard
    • 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 subdivide
    • 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, the side walls are also covered by absorbers in order to suppress cavity resonance at high frequencies.)
    • TSD
    • Transient suppression devices
    • TVI
    • Television interference
    • TVS
    • Transient voltage suppresser
  • U
    • U.A.P.
    • Unique acceptance procedure, CENELEC-procedure where a preliminary norm is filed for comment as well as for voting, in order to gain time.
    • UFB
    • Surge protector fine barrier
    • UHF
    • Ultra high frequency (300 - 3000MHz)
    • UIT
    • Union Internationale des Télécommunications / International Telecommunication Union
    • UL
    • Underwriters Laboratories, Inc.
    • 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, rectifiers, inverters and particularly batteries which ensures a continuos supply of power to the consumers in case of power failure and possibly improves energy quality)
    • UVP
    • Environmental tolerance measurement
    • UVV
    • Accident prevention regulations
  • V
    • 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
    • W.A.R.C.
    • World Administrative Radio Conference
  • X
    • X1
    • Capacitor for across-the-line IEC664 installation category 111
    • X2
    • Capacitor for across-the-line, IEC664 installation category 11
    • XT
    • Crosstalk
  • Y
    • Y1
    • Capacitor for bridging of double or reinforced insulation
    • Y2
    • Capacitor for bridging of basic or supplementary insulation
  • Z
    • ZE
    • Central ground point