Connectors for electronic equipment - Tests and measurements - Part 25-7: Test 25g - Impedance, reflection coefficient and standing voltage wave ratio (VSWR) (IEC 60512-25-7:2004)
Edition 2006-01-01

Electroacoustics - Audiometric equipment - Part 5: Instruments for the measurement of aural acoustic impedance/admittance (IEC 60645-5:2004)
Edition 2005-09-01

Superconductivity - Part 15: Electronic characteristic measurements - Intrinsic surface impedance of superconductor films at microwave frequencies (IEC 61788-15:2011) (german version)
Edition 2012-09-01

Printed boards and printed board assemblies - Design and use - Part 1-2: Generic requirements - Controlled impedance
Edition 1998-10-02

Specification for WB series glass beads with 50 O impedance for RF connectors ((IEC 63295:2022) EN IEC 63295:2022) (german version)
Edition 2024-05-01

Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz - Part 4-4: Low voltage decoupling filter - Impedance filter (german version)
Edition 2024-03-01

Communication cables - Specifications for test methods - Part 1-11: Electrical test methods - Characteristic impedance, input impedance, return loss (german version)
Edition 2018-09-01

Specification for WB series glass beads with 50 Ω impedance for RF connectors
Edition 2022-04

Acoustics - Determination of sound absorption coefficient and impedance in impedances tubes - Part 1: Method using standing wave ratio (ISO 10534-1:1996)
Edition 2002-01

Acoustics - Determination of sound absorption coefficient and impedance in impedances tubes - Part 2: Transfer-function method (ISO 10534-2:1998)
Edition 2024-06