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Korea, Republic of, KRISS (Korea Research Institute of Standards and Science)
Complete CMCs in Electricity and Magnetism for Korea, Republic of (.PDF file)
AC voltage ratio: attenuation and gain: real component. Inductive voltage divider, 0 to 1
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 2E-08
Comparison with reference divider
Maximum rms voltage: 25 V
Frequency: 1 kHz
Approved on 10 November 2014
Internal NMI service identifier: KRISS/5.3.1
 
AC voltage ratio: attenuation and gain: imaginary component. Inductive voltage divider, -0.001 to 0.001
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 5E-08
Comparison with reference divider
Maximum rms voltage: 25 V
Frequency: 1 kHz
Approved on 10 November 2014
Internal NMI service identifier: KRISS/5.3.1a
 
Magnetic fields below 50 kHz: DC magnetic flux density and applied magnetic field strength. Magnetometer, solenoid coil, Helmholtz coil, 0.05 mT to 1.2 mT
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in nT: 4
Helium-4 Atomic Magnetic Resonance (AMR), Helmholtz coil
Resonance frequency: 1 MHz to 50 MHz
Approved on 10 November 2014
Internal NMI service identifier: KRISS/10.2.2c
 
Magnetic fields below 50 kHz: DC shielding factor (ratio of DC magnetic flux density). Magnetic shell, shielding factor in DC field, 0 dB to 80 dB
Absolute expanded uncertainty (k = 2, level of confidence 95%) in dB: 10
Helium-4 AMR, Cesium AMR, fluxgate magnetometer, non-magnetic facilities
Maximum field: 1 mT
Shell size: less than a sphere of 15 cm in diameter
Approved on 10 November 2014
Internal NMI service identifier: KRISS/10.2.4
 
RF power: calibration factor and effective efficiency in coaxials. Power sensor: 50 , Type-N, 0.9 to 1
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in %: 1
DC substitution
Frequency: 100 kHz to 18 GHz
Connector: Type-N
Approved on 10 November 2014
Internal NMI service identifier: KRISS/11.1.3a
 
RF power: calibration factor and effective efficiency in coaxials. Power sensor: 50 , PC-7, 0.9 to 1
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in %: 1
DC substitution
Frequency: 100 kHz to 18 GHz
Connector: PC-7
Approved on 10 November 2014
Internal NMI service identifier: KRISS/11.1.3b
 
RF power: calibration factor and effective efficiency in waveguides. Power sensor: waveguide, 0.9 to 1
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in %: 1 to 1.5
DC substitution
Frequency: 8.2 GHz to 40 GHz
Waveguide band: WR90, WR62, WR42, WR28
Approved on 10 November 2014
Internal NMI service identifier: KRISS/11.1.4
Uncertainty table
 
Scalar RF reflection coefficient and attenuation: attenuation in coaxials. Passive device, 0 dB to 90 dB
Absolute expanded uncertainty (k = 2, level of confidence 95%) in dB: 0.001 to 0.01
Direct substitution
Frequency: 30 MHz
Approved on 10 November 2014
Internal NMI service identifier: KRISS/11.2.3
 
Scalar RF reflection coefficient and attenuation: attenuation in coaxials. Passive device, 0 dB to 90 dB
Absolute expanded uncertainty (k = 2, level of confidence 95%) in dB: 0.015 to 0.06
IF substitution
Frequency: 10 MHz to 18 GHz
Approved on 10 November 2014
Internal NMI service identifier: KRISS/11.2.3
 
Scalar RF reflection coefficient and attenuation: attenuation in coaxials. Passive device, step attenuator, 0.01 dB to 100 dB
Absolute expanded uncertainty (k = 2, level of confidence 95%) in dB: 0.003 to 0.02
RF substitution
Frequency: 10 MHz to 40 GHz
Connector: Type-N, PC-7, PC-3.5, PC-2.4
Reflection coefficient: <= 0.005
Approved on 10 November 2014
Internal NMI service identifier: KRISS/11.2.3
Uncertainty table
 
Scattering parameters: reflection coefficient (Sii) in coaxials. Passive device: 50 one and two port devices, 0 to 1
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 0.013 to 0.044
Vector network analyser
Frequency: 45 MHz to 50 GHz
Connector: Type-N, PC-7, PC-3.5, PC-2.4
Approved on 10 November 2014
Internal NMI service identifier: KRISS/11.3.1
Uncertainty table
 
Scattering parameters: reflection coefficient (Sii) in waveguides. Passive device: waveguide, 0 to 1
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 0.01 to 0.013
Vector network analyser
Frequency: 8.2 GHz to 40 GHz
Waveguide band: WR90, WR62, WR42, WR28
Approved on 10 November 2014
Internal NMI service identifier: KRISS/11.3.2
Uncertainty table
 
Noise: noise temperature or excess noise ratio in coaxials. Noise source, 5 dB to 21 dB
Absolute expanded uncertainty (k = 2, level of confidence 95%) in dB: 0.3
Radiometer
Frequency: 10 MHz to 26.5 GHz
Connector: Type-N, PC-7, PC-3.5
Approved on 10 November 2014
Internal NMI service identifier: KRISS/11.4.1
Uncertainty table
 
Noise: noise temperature or excess noise ratio in waveguides. Noise source, 5 dB to 17 dB
Absolute expanded uncertainty (k = 2, level of confidence 95%) in dB: 0.1
Radiometer
Frequency: 8.2 GHz to 18 GHz
Waveguide band: WR90, WR62
Approved on 10 November 2014
Internal NMI service identifier: KRISS/11.4.2
Uncertainty table
 
Antenna properties: antenna gain. OEG antenna, 0 dB to 10 dB
Absolute expanded uncertainty (k = 2, level of confidence 95%) in dB: 1
Three antenna method
Frequency: 0.5 GHz to 1.1 GHz
Approved on 10 November 2014
Internal NMI service identifier: KRISS/11.5.2a
 
Capacitance: dissipation factor for low loss capacitor. Fused-silica standard capacitor, 1E-06 to 1E-04
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 5E-06
Ratio transformer bridge
Frequency: 1 kHz
Capacitance: 10 pF
Approved on 10 November 2014
Internal NMI service identifier: KRISS/4.2.1b
Uncertainty table
 
Capacitance: dissipation factor for low loss capacitor. Standard capacitor, 1E-06 to 1E-04
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 1E-05
Ratio transformer bridge
Frequency: 1 kHz
Capacitance: 1 pF, 10 pF, 100 pF, 1000 pF
Approved on 10 November 2014
Internal NMI service identifier: KRISS/4.2.1c
Uncertainty table
 
Capacitance: dissipation factor for dielectric capacitor. Fixed capacitor, 1E-06 to 1E-04
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 5E-05
Ratio transformer bridge
Frequency: 1 kHz
Capacitance: 0.01 µF, 0.1 µF, 1 µF
Approved on 10 November 2014
Internal NMI service identifier: KRISS/4.2.2a
Uncertainty table
 
Antenna properties: antenna gain. Horn antenna, 10 dB to 30 dB
Absolute expanded uncertainty (k = 2, level of confidence 95%) in dB: 0.5 to 1
Three antenna method
Frequency: 0.5 GHz to 50 GHz
Approved on 10 November 2014
Internal NMI service identifier: KRISS/11.5.2b
 
RF voltage and current: RF-DC difference. Thermal voltage converter: RF voltmeter, 0 to 0.2
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in %: 1
Direct comparison
Frequency: 1 MHz to 1 GHz
Approved on 10 November 2014
Internal NMI service identifier: KRISS/11.7.1a