Direct acting indicating analogue electrical measuring instruments and their accessories - Part 6: Special requirements for ohmmeters (impedance meters) and conductance meters (Endorsed by Asociación Española de Normalización in May of 2018.)
Edition 2018-05-01

Aerospace series - Elements of electrical and optical connection - Test methods - Part 707: Electrical elements - Measurement of characteristic impedance of a bus or a stub terminator. (Endorsed by AENOR in April of 2002.)
Edition 2002-04-01

Aerospace series - Elements of electrical and optical connection - Test methods - Part 708: Electrical elements - Measurement of surface transfer impedance of coupleurs. (Endorsed by AENOR in April of 2002.)
Edition 2002-04-01

Aerospace series - Elements of electrical and optical connection - Test methods - Part 223: Measurement of characteristic impedance of a coaxial connector or contact (Endorsed by AENOR in February of 2008.)
Edition 2008-02-01

Radio-frequency connectors - Part 14: R.F. coaxial connectors with inner diameter of outer conductor 12 mm with screw coupling - Characteristic impedance 75 ohms (Type 3.5/12) (Endorsed by AENOR in April of 2011.)
Edition 2011-04-01

Radio-frequency connectors. RF coaxial connectors with inner diameter of outer conductor 16 mm (0,63 in) with screw lock. Characteristic impedance 50 O (type 7-16)
Edition 2023-02-15

Electrical safety in low voltage distribution systems up to 1000 V AC and 1500 V DC. Equipment for testing, measuring or monitoring of protective measures. Part 3. Loop impedance
Edition 2022-07-08

Electrochemical impedance spectroscopy (EIS) on coated and uncoated metallic specimens - Part 3: Processing and analysis of data from dummy cells (ISO 16773-3:2016)
Edition 2016-09-28

Electrochemical impedance spectroscopy (EIS) on coated and uncoated metallic specimens - Part 4: Examples of spectra of polymer-coated and uncoated specimens (ISO 16773-4:2017)
Edition 2017-09-20

Radio-frequency connectors - Part 65: Sectional specification for RF coaxial connectors, 1,35 mm inner diameter of outer conductor, with screw-coupling, characteristic impedance 50 O
Edition 2021-06-30