IEC 61753-042-02:2026 pdf download,Fibre optic interconnecting devices and passive components – Performance standard – Part 042-02: Plug-pigtail-style and plug-receptacle-style OTDR reflecting devices for category C – Controlled environments.

IEC 61753-042-02:2026 is a performance standard for plug‑pigtail-style and plug‑receptacle-style OTDR reflecting devices used with optical-fibre systems. It specifies the minimum initial performance, together with the required tests and measurement methods, that these reflector devices must meet to qualify for category C controlled environments, as defined in IEC 61753‑1 (Annex A). These OTDR reflectors are used for out‑of‑band OTDR testing—for example, when a user wants to test fibre links without relying on the main network components or without having to inject signals into the full system.

The standard also states how performance is to be evaluated, including test severities and the acceptance requirements associated with category C. It includes supporting information in annexes (with Annex B providing details concerning the devices). The consolidated edition is the first edition under this designation and cancels and replaces the earlier version published in 2014, with a technical revision. A notable change highlighted online is the harmonization of test requirements with IEC 61753‑1:2018, ensuring that the reflector device qualification aligns with the broader category framework and its testing expectations.