Fibre optic interconnecting devices and passive components - Performance standard - Part 087-2: Non-connectorized single-mode bidirectional 1310 nm upstream and 1490 nm downstream WWDM devices for category C - Controlled environment (IEC 61753-087-2:2010); German version EN 61753-087-2:2011 + AC:2011
Edition 2011-12

Fibre optic interconnecting devices and passive components - Performance standard - Part 089-02: Non-connectorised single-mode bidirectional OTDR monitoring WWDM for category C - Indoor controlled environment (IEC 61753-089-02:2022); German version EN IEC 61753-089-02:2022
Edition 2023-06

Telecontrol equipment and systems - Part 5-101: Transmission protocols - Companion standard for basic telecontrol tasks (IEC 60870-5-101:2003 + A1:2015); German version EN 60870-5-101:2003 + A1:2016
Edition 2016-11

Communication cables - Specifications for test methods - Part 1-6: Electrical test methods; Electromagnetic performance; German version EN 50289-1-6:2002
Edition 2002-12

Maritime navigation and radiocommunication equipment and systems - Part 1: Shipborne automatic transponder system installation using VHF digital selective calling (DSC) techniques; operational and performance requirements, methods of testing and required test results (IEC 61993-1:1999); German version EN 61993-1:1999
Edition 2000-06

Calibration of tuneable laser sources (IEC 86/600/CD:2022); Text in German and English
Edition 2024-01

Information security, cybersecurity and privacy protection - Information security controls based on ISO/IEC 27002 for cloud services (ISO/IEC DIS 27017:2025); German and English version prEN ISO/IEC 27017:2025
Edition 2025-03