Fibre optic interconnecting devices and passive components - Performance standard - Part 081-2: Non-connectorized single-mode fibre optic middle-scale 1 x N DWDM devices for category C - Controlled environments (IEC 61753-081-2:2014); German version EN 61753-081-2:2014
Edition 2015-03

Fibre optic interconnecting devices and passive components - Performance standard - Part 081-02: Non-connectorized single-mode fibre optic middle-scale 1 x N DWDM devices for category C - Controlled environments (IEC 86B/4390/CD:2020); Text in English
Edition 2021-07

Fibre optic interconnecting devices and passive components - Performance standard - Part 381-6: Cyclic arrayed waveguide grating - Category O (uncontrolled environment) (IEC 61753-381-6:2016); German version EN 61753-381-6:2016
Edition 2016-11

Fibre optic interconnecting devices and passive components - Performance standard - Part 381-2: Cyclic arrayed waveguide grating - Category C (controlled environment) (IEC 61753-381-2:2016); German version EN 61753-381-2:2016
Edition 2016-11

Control technology; graphical symbols and identifying letters for process control engineering; representation of details
Edition 1991-02

Graphical symbols for diagrams - Part 12: Binary logic elements (IEC 60617-12:1997); German version EN 60617-12:1998
Edition 1999-04

Optical amplifiers - Part 1: Generic specification (IEC 61291-1:2018); German version EN IEC 61291-1:2018
Edition 2019-06

Graphical symbols for diagrams; part 13: analogue elements (IEC 60617-13:1993); German version EN 60617-13:1993
Edition 1994-01

Terminal Equipment (TE) - Integrated Services Digital Network (ISDN) - Multipoint communications for audiovisual services; main functionalities and basic requirements for Multipoint Control Units (MCUs); English version ETS 300483:1996
Edition 1996-12

Telecommunication - Part 1: Basic concepts
Edition 1994-11