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CMCs General Physics (35)
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Radio frequency measurements (35)
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)
RF noise: noise temperature in coaxials (1)
Antenna properties: antenna factor
IONIZING RADIATION
Surface emission rate
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EURAMET (35)
United Kingdom (35)
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United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Electricity and Magnetism for United Kingdom (.PDF file)
Scattering parameters: transmission coefficient (Sij) in coaxials, real and imaginary. Passive device, two port device, -1 to 1
Absolute expanded uncertainty (k = 2.5, level of confidence 95 %): 0.00004 to 0.0010
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
Uncertainty for low loss devices is dominated by repeatability and device performance. The value estimated here is based upon the repeatability of a through connection towards the low end of the frequency band. The coverage factors in the uncertainty tab
Internal NMI service identifier: 479
Uncertainty table
 
Scattering parameters: transmission coefficient (Sij) in waveguides, real and imaginary. Passive device, two port device, -1 to 1
Absolute expanded uncertainty (k = 2.5, level of confidence 95 %): 0.000045 to 0.009
Network analyser
Frequency range: 8.2 GHz to 110 GHz
Waveguide designation: R100, R140, R220, R320, R400, R620, R900
Uncertainty for low loss devices is dominated by repeatability and device performance. The value estimated here is based upon the repeatability of a through connection towards the low end of the frequency band. The coverage factors in the uncertainty tab
Internal NMI service identifier: 489
Uncertainty table
 
Antenna properties: antenna gain. Horn antenna, 0 dB to 31 dB
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.04 to 0.1
3 antenna extrapolation technique
Frequency: 2.6 GHz to 110 GHz
Feed type: waveguide R32, R40, R48, R70, R84, R100, R120, R140, R220, R320, R400, R500, R620 or R900
Approved on 07 February 2019
Internal NMI service identifier: 458
Uncertainty table
 
Antenna properties: antenna gain. Horn antenna, 0 dB to 31 dB
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.05
3 antenna extrapolation technique
Frequency: 1.0 GHz to 40.0 GHz
Feed type: coaxial 50 GPC-7, type N, or GPC-3.5 mm, or 2.92 mm
Approved on 07 February 2019
Internal NMI service identifier: 469
Uncertainty table
 
Antenna properties: reflection coefficient. Antennas with coaxial inputs, 0 to 1
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 0.05
Network analyser
Environment: antenna radiating in free-space
Frequency: 0.3 MHz to 6000 MHz
Approved on 06 August 2013
Internal NMI service identifier: 471
 
Signal and pulse characteristics: pulse amplitude aberrations, preshoot and overshoot. Pulse generator, 0 % to 20 %
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in %: 0.1
Calibrated oscilloscope
Measurement bandwidth: 1 GHz to 50 GHz
Aberrations given as % of amplitude
Approved on 06 August 2013
Internal NMI service identifier: 472,2
 
Signal and pulse characteristics: pulse settling. Pulse generator, 0 % to 5 %
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in %: 0.05
Calibrated oscilloscope
Settling time after transition: 1 ns to 10 ns
Given as % of amplitude
Approved on 06 August 2013
Internal NMI service identifier: 472,5
 
Signal and pulse characteristics: pulse settling. Pulse generator, 0 % to 2 %
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in %: 0.05
Calibrated oscilloscope
Settling time after transition: > 10 ns
Given as % of amplitude
Approved on 06 August 2013
Internal NMI service identifier: 472,6
 
Signal and pulse characteristics: pulse time parameters: risetime. Pulse generator, 11 ps to 60 ps
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in ps: 0.9
Calibrated oscilloscope
Approved on 06 August 2013
Internal NMI service identifier: 473
 
Signal and pulse characteristics: pulse time parameters: risetime. Pulse generator, risetime t, 60 ps to 10000 ps
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in ps: (1.4 + 0.005t), t in ps
Calibrated oscilloscope
Approved on 06 August 2013
Internal NMI service identifier: 474
 
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