SI Digital Framework
CLASSIFICATION OF SERVICES
Version: 1.0 Beta , last update: 2024-11-14
Metrology Area: Electricity and Magnetism KCDB ↗
TTL file : EM.ttl
CHECKSUM:SHA-256 -
ALL
CURRENTLY ASSIGNED

EM/DC DC voltage, current, and resistance

EM/DC-1 DC voltage (up to 1100 V)
EM/DC-1.1 DC voltage sources assigned
EM/DC-1.1.1 Single values assigned
EM/DC-1.1.2 Low values (below or equal to 10 V) assigned
EM/DC-1.1.3 Intermediate values (from above 10 V up to 1100 V) assigned
EM/DC-1.1.4 Noise voltages assigned
EM/DC-1.2 DC voltage meters assigned
EM/DC-1.2.1 Very low values (below or equal to 1 mV) assigned
EM/DC-1.2.2 Intermediate values (from above 1 mV up to 1100 V) assigned
EM/DC-1.3 DC voltage ratios assigned
EM/DC-1.3.1 Up to 1100 V assigned
EM/DC-1.3.2 Attenuation assigned
EM/DC-2 DC resistance
EM/DC-2.1 DC resistance standards and sources assigned
EM/DC-2.1.1 Low values (below or equal to 1 ohm) assigned
EM/DC-2.1.2 Intermediate values (from above 1 ohm up to 1 megaohm) assigned
EM/DC-2.1.3 High values (above 1 megaohm) assigned
EM/DC-2.1.4 Standards for high current assigned
EM/DC-2.1.5 Multiple ranges assigned
EM/DC-2.1.6 Temperature, power and pressure coefficients assigned
EM/DC-2.2 DC resistance meters assigned
EM/DC-2.2.1 Low values (<= 1 ohm) assigned
EM/DC-2.2.2 Intermediate values (from above 1 ohm up to 1 gigaohm) assigned
EM/DC-2.2.3 High values (above 1 gigaohm) assigned
EM/DC-2.3 DC resistance ratios assigned
EM/DC-2.3.1 DC resistance ratios assigned
EM/DC-3 DC current (up to 100 A)
EM/DC-3.1 DC current sources assigned
EM/DC-3.1.1 Low values (below 0.1 mA) assigned
EM/DC-3.1.2 Intermediate values (from above 0.1 mA to 20 A) assigned
EM/DC-3.1.3 High values (from above 20 A up to 100 A) assigned
EM/DC-3.1.4 Transconductance ratio assigned
EM/DC-3.1.5 Noise currents assigned
EM/DC-3.2 DC current meters assigned
EM/DC-3.2.1 Low values (below or equal to 0.1 mA) assigned
EM/DC-3.2.2 Intermediate values (from above 0.1 mA to 20 A) assigned
EM/DC-3.2.3 High values (from above 20 A up to 100 A) assigned
EM/DC-3.3 DC current ratios assigned
EM/DC-3.3.1 Ratios up to 100 A assigned

EM/Imped Impedance up to the MHz range

EM/Imped-4 Impedance (up to the MHz range)
EM/Imped-4.1 AC resistance assigned
EM/Imped-4.1.1 Real component and imaginary component assigned
EM/Imped-4.1.2 AC-DC difference assigned
EM/Imped-4.1.3 Resistors for high current assigned
EM/Imped-4.1.4 Meters assigned
EM/Imped-4.1.5 AC resistance ratios assigned
EM/Imped-4.2 Capacitance assigned
EM/Imped-4.2.1 Capacitance and dissipation factor for low loss capacitors assigned
EM/Imped-4.2.2 Capacitance and dissipation factor for dielectric capacitors assigned
EM/Imped-4.2.3 Capacitance and dissipation factor for transformed capacitors assigned
EM/Imped-4.2.4 Meters assigned
EM/Imped-4.3 Inductance assigned
EM/Imped-4.3.1 Self inductance, low values (below 1 mH) assigned
EM/Imped-4.3.2 Self inductance, intermediate values (from 1 mH up to 1 H) assigned
EM/Imped-4.3.3 Self inductance, high values (above 1 H) assigned
EM/Imped-4.3.4 Mutual inductance assigned
EM/Imped-4.3.5 Meters assigned
EM/Imped-4.3.6 Quality factor assigned

EM/AC AC voltage, current, and power

EM/AC-5 AC voltage (up to the MHz range)
EM/AC-5.1 AC-DC voltage transfer assigned
EM/AC-5.1.1 AC-DC transfer difference at low voltages (<= 0.5 V) assigned
EM/AC-5.1.2 AC-DC transfer difference at medium voltages (0.5 V to 5 V) assigned
EM/AC-5.1.3 AC-DC transfer difference at higher voltages (> 5 V) assigned
EM/AC-5.2 AC voltage up to 1100 V assigned
EM/AC-5.2.1 Sources assigned
EM/AC-5.2.2 Meters assigned
EM/AC-5.3 AC voltage ratio up to 1100 V, atten & gain assigned
EM/AC-5.3.1 Real component and imaginary component assigned
EM/AC-5.3.2 Attenuation and gain assigned
EM/AC-6 AC current
EM/AC-6.1 AC-DC current transfer assigned
EM/AC-6.1.1 AC-DC transfer difference assigned
EM/AC-6.2 AC current up to 100 A assigned
EM/AC-6.2.1 Sources assigned
EM/AC-6.2.2 Meters assigned
EM/AC-6.3 AC current ratio up to 100 A assigned
EM/AC-6.3.1 Real component and imaginary component assigned
EM/AC-7 AC power
EM/AC-7.1 AC power and energy assigned
EM/AC-7.1.1 Single phase power at frequencies <= 400 Hz assigned
EM/AC-7.1.2 Single phase power at frequencies > 400 Hz assigned
EM/AC-7.1.3 Three phase assigned

EM/HV High voltage and current

EM/HV-8 High voltage and current
EM/HV-8.1 High DC voltage assigned
EM/HV-8.1.1 High voltage sources assigned
EM/HV-8.1.2 High voltage meters assigned
EM/HV-8.1.3 Ratios assigned
EM/HV-8.1.4 Average value of DC voltage assigned
EM/HV-8.1.5 RMS value of DC voltage ripple assigned
EM/HV-8.2 High voltage impedance assigned
EM/HV-8.2.1 Capacitance and dissipation factor assigned
EM/HV-8.2.2 Inductance and loss angle assigned
EM/HV-8.2.3 Burden: real and imaginary component (real component/imaginary component/modulus/argument) assigned
EM/HV-8.2.4 Resistance assigned
EM/HV-8.3 AC high voltage and voltage transformers assigned
EM/HV-8.3.1 Sources assigned
EM/HV-8.3.2 Meters assigned
EM/HV-8.3.3 Peak values of high AC voltage assigned
EM/HV-8.3.4 Voltage transformers: ratio error and phase displacement assigned
EM/HV-8.3.5 RMS value for high AC voltage assigned
EM/HV-8.3.6 Rectified average value of high AC voltage assigned
EM/HV-8.4 Pulsed high voltage and current assigned
EM/HV-8.4.1 Parameters for lightning impulse voltage (see list in the bottom of KCDB home page) assigned
EM/HV-8.4.2 Lightning impulse time parameters not assigned
EM/HV-8.4.3 Parameters for switching impulse voltage (see list in the bottom of KCDB home page) assigned
EM/HV-8.4.4 Switching impulse time parameters not assigned
EM/HV-8.4.5 Parameters for impulse current (see list in the bottom of KCDB home page) assigned
EM/HV-8.4.6 Impulse current time parameters not assigned
EM/HV-8.4.7 Impulse energy not assigned
EM/HV-8.4.8 Response parameters: response time, overshoot, settling time not assigned
EM/HV-8.4.9 Parameters for other impulse voltage types (see list in the bottom of KCDB home page) assigned
EM/HV-8.5 Electric discharge assigned
EM/HV-8.5.1 Apparent charge assigned
EM/HV-8.5.2 Response assigned
EM/HV-8.5.3 Rise time of partial discharge pulse assigned
EM/HV-8.6 High AC current and current transformers assigned
EM/HV-8.6.1 Sources not assigned
EM/HV-8.6.2 Meters not assigned
EM/HV-8.6.3 Current transformers: ratio error and phase displacement assigned
EM/HV-8.6.4 Pulsating current not assigned
EM/HV-8.6.5 High AC current RMS value assigned
EM/HV-8.6.6 Other AC current parameters (see list in the bottom of KCDB home page) assigned
EM/HV-8.7 High DC current assigned
EM/HV-8.7.1 Sources not assigned
EM/HV-8.7.2 Meters not assigned
EM/HV-8.7.3 High DC current ratio assigned
EM/HV-8.7.4 High DC current average value assigned

EM/OtherDC Other DC and low frequency measurements

EM/OtherDC-9 Other DC and low frequency measurements
EM/OtherDC-9.1 Electric charge assigned
EM/OtherDC-9.1.1 Sources assigned
EM/OtherDC-9.1.2 Meters assigned
EM/OtherDC-9.2 Phase angle assigned
EM/OtherDC-9.2.1 Sources assigned
EM/OtherDC-9.2.2 Meters assigned
EM/OtherDC-9.2.3 Phase shift assigned
EM/OtherDC-9.3 Current and voltage waveform assigned
EM/OtherDC-9.3.1 Main frequency harmonics assigned
EM/OtherDC-9.3.2 Mains frequency harmonic distorsion assigned
EM/OtherDC-9.3.3 Non sinusoidal waveforms, harmonic meas. for current waveforms, steady state not assigned
EM/OtherDC-9.3.4 Mains frequency fluctuating harmonics (see list in the bottom of KCDB home page) assigned
EM/OtherDC-9.3.5 Mains frequency voltage fluctuations (see list in the bottom of KCDB home page) assigned
EM/OtherDC-9.3.6 Flicker severity (Pst), complex modulation not assigned
EM/OtherDC-9.3.7 Mains frequency interharmonics assigned

EM/Field Electric and magnetic fields

EM/Field-10 Electric and magnetic fields
EM/Field-10.1 Electric fields at freq. below 50 kHz assigned
EM/Field-10.1.1 Electrostatic field strength assigned
EM/Field-10.1.2 Electric field strength assigned
EM/Field-10.2 Magnetic fields at freq. below 50 kHz assigned
EM/Field-10.2.1 Magnetic flux assigned
EM/Field-10.2.2 DC magnetic flux density and applied magnetic field strength assigned
EM/Field-10.2.3 AC magnetic flux density and applied magnetic field strength assigned
EM/Field-10.2.4 DC shielding factor (ratio of DC magnetic flux density) assigned
EM/Field-10.2.5 AC shielding factor (ratio of AC magnetic flux density) assigned
EM/Field-10.2.6 Turn area (ratio of magnetic flux and magnetic flux density) assigned
EM/Field-10.2.7 Magnetic flux density or magnetic field strength per unit current assigned
EM/Field-10.2.8 Magnetic field gradient assigned
EM/Field-10.3 Electromagnetic fields at freq. above 50 kHz assigned
EM/Field-10.3.1 Electric field strength assigned
EM/Field-10.3.2 Magnetic field strength assigned
EM/Field-10.3.3 Power flux density assigned
EM/Field-10.3.4 Magnetic flux density assigned
EM/Field-10.3.5 Magnetic field strength per unit current assigned
EM/Field-10.3.6 Turn area (ratio of magnetic flux and magnetic flux density) assigned

EM/RF Radio frequency measurements

EM/RF-11 Radio frequency measurements
EM/RF-11.1 RF power assigned
EM/RF-11.1.1 Absolute power in coaxial line assigned
EM/RF-11.1.2 Absolute power in waveguide assigned
EM/RF-11.1.3 Calibration factor and effective efficiency in coaxial line assigned
EM/RF-11.1.4 Calibration factor and effective efficiency in waveguide assigned
EM/RF-11.1.5 Non-CW power (absolute or relative) assigned
EM/RF-11.1.6 Power measurements in balanced lines assigned
EM/RF-11.2 Scalar RF reflection coef. and attenuation assigned
EM/RF-11.2.1 Reflection coefficient in coaxial line (values in linear terms) assigned
EM/RF-11.2.2 Reflection coefficient in waveguide (values in linear terms) assigned
EM/RF-11.2.3 Attenuation in coaxial line (values in dB) assigned
EM/RF-11.2.4 Attenuation in waveguide (values in dB) assigned
EM/RF-11.2.5 Directivity, effective source match assigned
EM/RF-11.2.6 Reflection and attenuation measurements in balanced lines assigned
EM/RF-11.3 Scattering parameters (vectors) assigned
EM/RF-11.3.1 Reflection coefficient in coaxial line (real and imaginary) assigned
EM/RF-11.3.2 Reflection coefficient in waveguide (real and imaginary) assigned
EM/RF-11.3.3 Transmission coefficient in coaxial line (real and imaginary) assigned
EM/RF-11.3.4 Transmission coefficient in waveguide (real and imaginary) assigned
EM/RF-11.3.5 Directivity, effective source match assigned
EM/RF-11.3.6 Reflection coefficient for common mode systems assigned
EM/RF-11.3.7 Transmission coefficient for common mode systems assigned
EM/RF-11.3.8 Reflection coefficient (Sii) in planar line systems assigned
EM/RF-11.3.9 Transmission coefficient (Sij) in planar line systems assigned
EM/RF-11.4 Noise assigned
EM/RF-11.4.1 Noise temperature or excess noise ratio in coaxial line assigned
EM/RF-11.4.2 Noise temperature or excess noise ratio in waveguide assigned
EM/RF-11.4.3 Amplifier noise parameters assigned
EM/RF-11.4.4 Phase noise assigned
EM/RF-11.4.5 Radio brightness temperature, spectral radiance in free space assigned
EM/RF-11.5 Antenna properties assigned
EM/RF-11.5.1 Antenna factor assigned
EM/RF-11.5.2 Antenna gain assigned
EM/RF-11.5.3 Other properties (pattern, beam width, …) assigned
EM/RF-11.6 Signal and pulse characteristics assigned
EM/RF-11.6.1 Pulse amplitude assigned
EM/RF-11.6.2 Pulse time parameters assigned
EM/RF-11.6.3 Modulation, AM and FM assigned
EM/RF-11.6.4 Distorsion and harmonic content assigned
EM/RF-11.7 RF voltage and current assigned
EM/RF-11.7.1 RF-DC difference assigned
EM/RF-11.7.2 RF voltage sources assigned
EM/RF-11.7.3 RF voltage meters assigned
EM/RF-11.7.4 RF current assigned
EM/RF-11.7.5 RF transfer impedance assigned
EM/RF-11.7.6 RF voltage division factor assigned
EM/RF-11.7.7 RF coupling factor assigned
EM/RF-11.7.8 Flatness of RF voltage sources assigned
EM/RF-11.7.9 Flatness of RF voltage meters assigned
EM/RF-11.8 Lumped impedance - admittance assigned
EM/RF-11.8.1 Resistance or conductance assigned
EM/RF-11.8.2 Inductance assigned
EM/RF-11.8.3 Capacitance assigned
EM/RF-11.8.4 Quality factor assigned
EM/RF-11.9 RF characteristic impedance assigned
EM/RF-11.9.1 Mechanical dimensions assigned
EM/RF-11.9.2 Electrical parameters assigned

EM/Mater Materials

EM/Mater-12 Measurements on materials
EM/Mater-12.1 Electrical conductivity assigned
EM/Mater-12.1.1 Metallic materials assigned
EM/Mater-12.1.2 Liquids assigned
EM/Mater-12.1.3 Semiconducting and similar materials assigned
EM/Mater-12.2 Dielectric properties assigned
EM/Mater-12.2.1 Relative permittivity: real and - or imaginary part assigned
EM/Mater-12.2.2 Dielectric loss tangent assigned
EM/Mater-12.3 Soft magnetic sheet and powder materials assigned
EM/Mater-12.3.1 Specific total power loss assigned
EM/Mater-12.3.2 Peak value of DC magnetic polarisation assigned
EM/Mater-12.3.3 Peak value of AC magnetic polarisation assigned
EM/Mater-12.3.4 Peak value of magnetic field strength assigned
EM/Mater-12.3.5 RMS value of magnetic field strength assigned
EM/Mater-12.3.6 Specific apparent power assigned
EM/Mater-12.3.7 Relative peak permeability assigned
EM/Mater-12.3.8 Complex relative permeability assigned
EM/Mater-12.3.9 Density assigned
EM/Mater-12.3.10 Resistivity assigned
EM/Mater-12.4 Soft magnetic bulk material assigned
EM/Mater-12.4.1 Magnetic polarisation assigned
EM/Mater-12.4.2 Magnetic field strength assigned
EM/Mater-12.4.3 Remanent magnetic flux density assigned
EM/Mater-12.4.4 Coercive magnetic field strength assigned
EM/Mater-12.4.5 Magnetic saturation polarisation assigned
EM/Mater-12.4.6 Relative permeability assigned
EM/Mater-12.5 Feebly magnetic, paramagnetic and diamagnetic material assigned
EM/Mater-12.5.1 DC magnetic susceptibility or relative magnetic permeability assigned
EM/Mater-12.6 Hard magnetic material assigned
EM/Mater-12.6.1 Remanent magnetic flux density assigned
EM/Mater-12.6.2 Coercive field strength assigned
EM/Mater-12.6.3 Maximum energy product assigned
EM/Mater-12.6.4 Magnetic moment assigned
EM/Mater-12.6.5 Magnetic flux density assigned
EM/Mater-12.6.6 Magnetic polarisation assigned
EM/Mater-12.6.7 Relative recoil permeability assigned
EM/Mater-12.7 Magnetic data storage media assigned
EM/Mater-12.7.1 Signal amplitude of magnetic stripes assigned
EM/Mater-12.7.2 Surface profile of magnetic stripes assigned
EM/Mater-12.7.3 Reference field of diskettes assigned
EM/Mater-12.7.4 Signal amplitude of diskettes assigned
EM/Mater-12.7.5 Resolution of diskettes assigned
EM/Mater-12.7.6 Peak shift of diskettes assigned
EM/Mater-12.7.7 Overwrite of diskettes assigned
EM/Mater-12.7.8 Video and audio tapes assigned