IEC 60793-1-48:2017适用于测量偏振模色散(PMD)的三种方法，在第4条中描述。它为测量单模光纤的PMD建立了统一的要求，从而有助于商业用途的光纤和电缆的检查。？这第三版取消并取代了2007年出版的第二版。它构成技术修订。与上一版相比，此版本包括以下重大技术变更:删除了SOP方法。

IEC 60793-1-48: 2017 applies to three methods of measuring polarization mode dispersion (PMD), which are described in Clause 4. It establishes uniform requirements for measuring the PMD of single-mode optical fibre, thereby assisting in the inspection of fibres and cables for commercial purposes.？This third edition cancels and replaces the second edition published in 2007. It constitutes a technical revision. This edition includes the following significant technical change with respect to the previous edition: removal of the SOP approach.