IEC 61745:2017描述了执行端面图像分析（也称为“近场”或“灰度”分析）的测试集的校准。然而，这些原理可以应用于不同类型的测试集。所概述的程序由校准实验室和几何测试集的制造商或用户执行，目的是校准几何测试集和评估在校准测试集上进行的测量的不确定度。本文件不包括光纤涂层或电缆测量测试套件的校准。第二版取消并取代了1998年出版的第一版，构成了技术修订。与上一版相比，此版本包括以下重大技术变更: a)消除单模光纤几何测试组的限制以包括多模；b)增加一个新的附件作为数学基础。 关键词:端面图像分析，光纤几何测试集

IEC 61745:2017 describes the calibration of test sets that perform end-face image analysis, also known as "near-field" or "grey-scale" analysis. The principles, however, can be applied to test sets of a different type. The procedures outlined are performed by calibration laboratories and by the manufacturers or users of geometry test sets, for the purpose of calibrating geometry test sets and for evaluating the uncertainties in measurements made on calibrated test sets. The calibration of fibre coating or cable measurement test sets is not covered by this document. This second edition cancels and replaces the first edition, published in 1998, and constitutes a technical revision.This edition includes the following significant technical changes with respect to the previous edition:
a) removal of the limitation of single mode optical fibre geometry test sets to include multimode;
b) addition of a new annex as mathematical basis.
Keywords: end-face image analysis, optical fibre geometry test sets