Anechoic chambers - Part 1: Shield attenuation measurement; German version EN 50147-1:1996
Edition 1996-07

Acoustics - Measurement of the in situ sound attenuation of a removable screen (ISO 11821:1997); German version EN ISO 11821:1997
Edition 1997-08

Connectors for electronic equipment - Tests and measurements - Part 25-5: Test 25e - Return loss (IEC 60512-25-5:2004); German version EN 60512-25-5:2004
Edition 2005-05

Methods of measurement for waveguides - Part 6: Return loss on waveguide and waveguide assemblies (IEC 61580-6:1995); German version EN 61580-6:1997
Edition 1998-03

Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-20: Examinations and measurements; Directivity of fibre optic branching devices (IEC 61300-3-20:2001); German version EN 61300-3-20:2001
Edition 2002-08

Aerospace series - Elements of electrical and optical connection; Test methods - Part 601: Optical elements; Insertion loss; German and English version EN 2591-601:2001
Edition 2002-10

Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-19: Examinations and measurements; Polarization dependence of return loss of a single mode fibre optic component (IEC 61300-3-19:1997); German version EN 61300-3-19:1997
Edition 1997-10

Optical fibre amplifiers - Basic specification - Part 5-3: Test methods for reflectance parameters; Reflectance tolerance using an electrical spectrum analyser (IEC 61290-5-3:2002); German version EN 61290-5-3:2002
Edition 2002-11

Fibre optic interconnecting devices and passive components performance standard - Part 053-3: Continuously variable attenuators for category U - Uncontrolled environment (IEC 61753-053-3:2004); German version EN 61753-053-3:2004
Edition 2004-10

Transmission systems and two-ports; measures for attenuation
Edition 1971-11