测量方法.干热(稳态)试验

[中文适用范围]： 本部分 IEC 60793 提供了一种在实际环境中评估光纤性能的实际方法。本标准旨在确定 A1a 至 A1d 类多模光纤和 B 类及 C 类单模光纤是否适用于实际使用、储存和/或运输过程中可能出现的高温（干热）环境条件。该试验主要用于允许观察给定时期内高温的影响。该程序按照 IEC 60068-2-2 试验 Bd 进行。注意：本试验适用于其他光纤类别正在研究中。 [外文原描述]： IEC 60793-1-51:2014 provides a practical method for evaluating fibre performance in a defined environment. The purpose of this standard is to determine the suitability of optical fibre sub-category A1a to A1d multimode fibres and class B and C single-mode fibres to withstand the environmental condition of high temperature (dry heat) which may occur in actual use, storage and/or transport. The test is primarily intended to permit the observation of effects of high temperature over a given period. This procedure is conducted in accordance with IEC 60068-2-2, Test Bd. This second edition cancels and replaces the first edition, published in 2001, and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - harmonizing the content with sectional specifications of relevant fibre types; - extending the applicability of the document to class C single-mode fibres. Keywords: optical fibre sub-category A1a to A1d multimode fibres, class B and C single-mode fibres, high temperature (dry heat)