Fibre-optic communication subsystem test procedures - Part 4-1: Installed cabling plant - Multimode attenuation measurement (IEC 61280-4-1:2019 + COR1:2020 + AMD1:2021 + COR2:2022); German version EN IEC 61280-4-1:2019 + AC:2020 + A1:2022 + AC:2022
Edition 2024-04

Fibre-optic communication subsystem test procedures - Part 4-2: Installed cable plant - Single-mode attenuation and optical return loss measurement (IEC 86C/1876/CDV:2023); German and English version prEN IEC 61280-4-2:2023
Edition 2024-04

Fibre-optic communication subsystem test procedures - Part 4-2: Installed cable plant - Single-mode attenuation and optical return loss measurement (IEC 61280-4-2:2014); German version EN 61280-4-2:2014
Edition 2015-05

Fibre optic communication subsystem test procedures - Part 4-3: Installed passive optical networks - Attenuation and optical return loss measurements (IEC 61280-4-3:2022); German version EN IEC 61280-4-3:2022
Edition 2024-02

Fibre optic communication subsystem test procedures - Part 4-4: Cable plants and links - Polarization mode dispersion measurement for installed links (IEC 61280-4-4:2017); German version EN 61280-4-4:2017
Edition 2018-05

Fibre-optic communication subsystem test procedures - Part 4-5: Installed cabling plant - Attenuation measurement of MPO terminated fibre optic cabling plant using test equipment with MPO interfaces (IEC 61280-4-5:2020 + COR1:2022); German version EN IEC 61280-4-5:2020 + AC:2022
Edition 2022-12

Fibre optic communication subsystems - Part 1: Generic specification (IEC 61281-1:2017); German version EN IEC 61281-1:2018
Edition 2019-03

Overhead lines - Requirements and tests for fittings (IEC 61284:1997); German version EN 61284:1997
Edition 1998-05

Industrial-process control - Safety of analyser houses (IEC 65B/1272/CDV:2024); German and English version prEN IEC 61285:2024
Edition 2025-09

Industrial-process control - Safety of analyzer houses (IEC 61285:2015); German version EN 61285:2015
Edition 2016-03