IEC 61753的本部分包含了光纤尾纤980/1 550 nm WWDM设备必须满足的最低初始测试和测量要求以及严重性，以便归类为符合IEC 61753-1附录a中定义的C类（受控环境）要求。这些要求包括带有单模非连接尾纤的设备。 本副本包含2008年9月勘误表的内容。

This part of IEC 61753 contains the minimum initial test and measurement requirements and severities which a fibre optic pigtailed 980/1 550 nm WWDM device must satisfy in order to be categorized as meeting the requirements of category C (controlled environments), as defined in Annex A of IEC 61753-1. The requirements cover devices with single-mode non-connectorised pigtails. The contents of the corrigendum of September 2008 have been included in this copy.