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NF S31-079-2 ; NF EN ISO 10534-2:2023-10-11
Acoustics - Determination of acoustic properties in impedance tubes - Part 2: two-microphone technique for normal sound absorption coefficient and normal surface impedance
Edition
2023-10-11
NF C90-201-7 ; NF EN 50065-7:2002-12-01
Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz - Part 7: equipment impedance
Edition
2002-12-01
NF L54-002-161 ; NF EN 2591-705:2002-11-01
Aerospace series - Elements of electrical and optical connection - Test methods - Part 705: electrical elements - Measurement of stub input impedance of couplers
Edition
2002-11-01
NF C93-400-23-7 ; NF EN 60512-23-7:2005-06-01
Connectors for electronic equipment - Tests and measurements - Part 23-7 : screening and filtering tests - Test 23g : effective transfer impedance of connectors
Edition
2005-06-01
BS ISO 18437-4
Mechanical vibration and shock. Characterization of the dynamic mechanical properties of visco-elastic materials. Dynamic stiffness method
Edition
2008-11-30
BS EN 50289-1-11
Communication cables. Specifications for test methods. Electrical test methods. Characteristic impedance, input impedance, return loss
Edition
2017-01-31
BS EN 61788-15
Superconductivity. Electronic characteristic measurements. Intrinsic surface impedance of superconductor films at microwave frequencies
Edition
2012-03-31
BS EN 60512-23-7
Connectors for electronic equipment - Tests and measurements - Screening and filtering tests - Test 23g - Effective transfer impedance of connectors
Edition
2005-04-18
BS EN 2591-705
Elements of electrical and optical connection - Test methods - Electrical elements - Measurement of stub input impedance of couplers
Edition
2001-12-14
ISO 13472-2
Acoustics - Measurement of sound absorption properties of road surfaces in situ - Part 2: Spot method for reflective surfaces
Edition
2010-05