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CMCs General Physics (50)
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Photometry
Properties of detectors and sources
Radio frequency measurements (50)
Antenna properties: antenna factor (15)
Signal and pulse characteristics: pulse time parameters: risetime (5)
Antenna properties: antenna gain (4)
Scalar RF attenuation and gain: in coaxials (4)
Scalar RF attenuation and gain: in waveguides (4)
Signal and pulse characteristics: pulse amplitude (2)
Signal and pulse characteristics: pulse settling (2)
RF noise: noise temperature in waveguides (2)
Scattering parameters: reflection coefficient (Sii) in coaxials, real and imaginary (2)
HF power: calibration factor in coaxials (2)
Antenna properties: reflection coefficient (1)
RF characteristic impedance: electrical parameters (1)
IONIZING RADIATION
Emission rate
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United Kingdom (50)
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United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Electricity and Magnetism for United Kingdom (.PDF file)
Signal and pulse characteristics: pulse time parameters: risetime. Sampling oscilloscope, 5 ps to 50 ps
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in ps: 1.3
Calibrated electrical or optoelectronic pulse generator
Approved on 06 August 2013
Internal NMI service identifier: 475
 
Signal and pulse characteristics: pulse time parameters: risetime. Sampling oscilloscope, risetime t, > 50 ps to 1000 ps
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in ps: (3.0 + 0.005t), t in ps
Calibrated electrical or optoelectronic pulse generator
Approved on 06 August 2013
Internal NMI service identifier: 476,1
 
Signal and pulse characteristics: pulse time parameters: risetime. Real-time digitising oscilloscope, risetime t, 300 ps to 10000 ps
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in ps: (20.0 + 0.002t), t in ps
Calibrated electrical pulse generator
Approved on 06 August 2013
Internal NMI service identifier: 476,2
 
Scalar RF attenuation and gain: in coaxials. Passive device, amplifier: , 0.01 dB to 100 dB
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: (6E-04 + 6E-05), in dB
Voltage ratio
Frequency range: 10 kHz and 50 kHz, 0.5 MHz to 18 GHz
Reflection coefficient: <= 0.005
Impedance: 50
Alpha refers to magnitude of gain or attenuation, measurements are done at a fixed detection level, gain would be limited to 100 mW output power
Approved on 06 August 2013
Internal NMI service identifier: 371
 
Scalar RF attenuation and gain: in coaxials. Passive device, amplifier: , 100 dB to 120 dB
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.01
IF series substitution
Frequency range: 10 kHz and 50 kHz, 0.5 MHz to 18 GHz
Reflection coefficient: <= 0.005
Impedance: 50
Alpha refers to magnitude of gain or attenuation, measurements are done at a fixed detection level, gain would be limited to 100 mW output power. Measurement lower limit at > 100 dB.
Approved on 06 August 2013
Internal NMI service identifier: 372
 
Scalar RF attenuation and gain: in coaxials. Passive device, amplifier: , 120 dB to 140 dB
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.02
IF series substitution
Frequency range: 10 kHz and 50 kHz, 0.5 MHz to 18 GHz
Reflection coefficient: <= 0.005
Impedance: 50
Alpha refers to magnitude of gain or attenuation, measurements are done at a fixed detection level, gain would be limited to 100 mW output power. Measurement lower limit at > 120 dB.
Approved on 06 August 2013
Internal NMI service identifier: 373
 
Scalar RF attenuation and gain: in coaxials. Passive device, amplifier: , 0.01 dB to 80 dB
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 2E-04, in dB
Voltage ratio
Frequency range: 18 GHz to 40 GHz
Reflection coefficient: <= 0.005
Impedance: 50
Alpha refers to magnitude of gain or attenuation, measurements are done at a fixed detection level, gain would be limited to 100 mW output power
Approved on 06 August 2013
Internal NMI service identifier: 377
 
Scalar RF attenuation and gain: in waveguides. Passive device, amplifier: , 0.01 dB to 90 dB
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: (6E-04 + 6E-05), in dB
Voltage ratio
Frequency range for TE10 mode: 2.6 GHz to 3.95 GHz, 3.3 GHz to 4.9 GHz, 3.95 GHz to 5.85 GHz, 5.85 GHz to 8.2 GHz, 7.05 GHz to 10.0 GHz, 8.2 GHz to 12.4 GHz, 10.0 GHz to 15.0 GHz, 12.4 GHz to 18.0 GHz
Reflection coefficient: <= 0.005
Waveguide designation: R32, R40, R48, R70, R84, R100, R120, R140
Alpha refers to magnitude of gain or attenuation, measurements are done at a fixed detection level, gain would be limited to 100 mW output power
Approved on 06 August 2013
Internal NMI service identifier: 381
 
Scalar RF attenuation and gain: in waveguides. Passive device, amplifier: , 0.01 dB to 80 dB
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: (1E-03 + 2E-04), in dB
Voltage ratio
Frequency range for TE10 mode: 18.0 GHz to 26.5 GHz, 26.5 GHz to 40.0 GHz, 33.0 GHz to 50.0 GHz
Reflection coefficient: <= 0.005
Waveguide designation: R220, R320, R400
Alpha refers to magnitude of gain or attenuation, measurements are done at a fixed detection level, gain would be limited to 100 mW output power
Approved on 06 August 2013
Internal NMI service identifier: 389
 
Scalar RF attenuation and gain: in waveguides. Passive device, amplifier: , 0.01 dB to 60 dB
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: (2E-03 + 6E-04), in dB
RF ratio
Frequency range for TE10 mode: 50.0 GHz to 75.0 GHz
Reflection coefficient: <= 0.005
Waveguide designation: R620
Alpha refers to magnitude of gain or attenuation, measurements are done at a fixed detection level, gain would be limited to 100 mW output power
Approved on 06 August 2013
Internal NMI service identifier: 392
 
Scalar RF attenuation and gain: in waveguides. Passive device, amplifier: , 0.01 dB to 60 dB
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: (2E-03 + 6E-04), in dB
RF ratio
Frequency range for TE10 mode: 75.0 GHz to 110 GHz
Reflection coefficient: <= 0.01
Waveguide designation: R900
Alpha refers to magnitude of gain or attenuation, measurements are done at a fixed detection level, gain would be limited to 100 mW output power
Approved on 06 August 2013
Internal NMI service identifier: 393
 
Scattering parameters: reflection coefficient (Sii) in coaxials, real and imaginary. Passive device, one port device, -1 to 1
Absolute expanded uncertainty (k = 2.5, level of confidence 95 %): 0.0020 to 0.0109
Network analyser
Frequency range: 9 kHz to 100 MHz
Connector type: GR900, GPC-7, Type-N, GPC-3.5, 2.92 mm, 2.4 mm
Impedance: 50
Approved on 07 February 2019
Internal NMI service identifier: 400
Uncertainty table
 
Antenna properties: antenna factor. Linear dipole, -30 dB(1/m) to 80 dB(1/m)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.35
Standard antenna method
Environment: defined height
Frequency: 20 MHz to 500 MHz
Approved on 06 August 2013
Internal NMI service identifier: 445
 
Antenna properties: antenna factor. Linear dipole, -30 dB(1/m) to 80 dB(1/m)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.7
Standard antenna method
Environment: free-space
Frequency: 20 MHz to 40 MHz
Approved on 07 April 2016
Internal NMI service identifier: 446
 
Antenna properties: antenna factor. Linear dipole, -30 dB(1/m) to 80 dB(1/m)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.5
Standard antenna method
Environment: defined height
Frequency: 500 MHz to 1000 MHz
Approved on 07 April 2016
Internal NMI service identifier: 447
 
Antenna properties: antenna factor. Linear dipole, -30 dB(1/m) to 80 dB(1/m)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.5
Standard antenna method
Environment: horizontal above ground plane or free-space
Frequency: 500 MHz to 1000 MHz
Approved on 07 April 2016
Internal NMI service identifier: 448
 
Antenna properties: antenna gain. Horn antenna, 0 dB to 30 dB
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.8
3 antenna technique, fixed distance, using network analyser
Frequency: 1.0 GHz to 40.0 GHz
Feed type: coaxial 50 GPC-7, type N, GPC-3.5 mm, SMA or 2.92 mm
Approved on 07 February 2019
Internal NMI service identifier: 561
Uncertainty table
 
Antenna properties: antenna gain. Horn antenna, 0 dB to 31 dB
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.7
3 antenna technique, fixed distance, using network analyser
Frequency: 2.6 GHz to 50 GHz
Feed type: waveguide R32, R40, R48, R70, R84, R100, R120, R140, R220, R320 or R400
Approved on 06 August 2013
Internal NMI service identifier: 564
Uncertainty table
 
Scattering parameters: reflection coefficient (Sii) in coaxials, real and imaginary. Passive device, one and two port devices, -1 to 1
Absolute expanded uncertainty (k = 2.5, level of confidence 95 %): 0.001 to 0.013
Network analyser
Frequency range: 10 MHz to 67 GHz
Connector type: 7-16, GR900, GPC-7, Type-N, 3.5 mm, 2.92 mm, 2.4 mm, 1.85 mm
Impedance: 50
Approved on 07 April 2016
Internal NMI service identifier: 401
Uncertainty table
 
Scattering parameters: reflection coefficient (Sii) in waveguides, real and imaginary. Passive device, one and two port devices, -1 to 1
Absolute expanded uncertainty (k = 2.5, level of confidence 95 %): 0.002 to 0.008
Network analyser
Frequency range: 10 MHz to 67 GHz
Waveguide designation: R70, R100, R140, R220, R320, R400, R620, R900
Uncertainty is dominated by repeatability and device performance. The value estimated here assumes a very repeatable device.
Approved on 07 February 2019
Internal NMI service identifier: 414
Uncertainty table