IEC 61753-053-02:20 22包含非连接器单模光纤电控可变光衰减器需要满足的最低初始测试和测量要求以及严重性，以便被归类为满足IEC 61753-1:20 18附录A中定义的C类受控环境的要求。 第一版取消并取代了2014年发布的IEC 61753-053-2。本版构成技术修订版。本版本包括以下与IEC 61753-053-2:20 14相关的重大技术变更: a)术语和定义与IEC 60869-1和IEC TS 62627-09中的术语和定义的协调； b)试验项目及其条件与IEC 61753的协调？1:20 18和IEC 61753？1:2018/AMD1:20 0。

IEC 61753-053-02: 2022 contains the minimum initial test and measurement requirements and severities which non-connectorized single-mode fibre electrically controlled variable optical attenuator needs to satisfy in order to be categorised as meeting the requirements of category C – Controlled environments, as defined in Annex A of IEC 61753-1:2018.
This first edition cancels and replaces IEC 61753-053-2 published in 2014. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to IEC 61753-053-2:2014:
a) harmonization of terms and definitions with those in IEC 60869-1 and IEC TS 62627-09;
b) harmonization of test items and their conditions with IEC 61753？1:2018 and IEC 61753？1:2018/AMD1:2020.