光纤电缆 第1-212部分：通用规范 基本光缆测试程序 环境试验方法 两端固定电缆元件的温度循环 方法 F12

[中文适用范围]： 本部分IEC 60794系列定义了当两端固定的光纤电缆经受温度循环时检查衰减行为（衰减变化）的测试程序。该测试评估在无端移动条件下用于终止的电缆的衰减行为，例如与互连设备或无源组件连接。 注：IEC 60794-1-2011（方法F1）是电缆的一般温度循环测试。 [外文原描述]： IEC 60794-1-212:2024 defines the test procedure to examine the attenuation behaviour (change in attenuation) when an optical fibre cable with cable elements fixed at both ends is subjected to temperature cycling. This test assesses the attenuation behaviour of a cable under a no-end movement condition intended for termination with, for example, interconnecting devices or passive components. This document partially cancels and replaces IEC 60794-1-22:2017. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to IEC 60794-1-22:2017: a) the description of the test method has been changed to “with cable elements fixed at both ends”; b) subclauses have been added to the procedure clause; c) the preparation of cable sample and test set-up has been arranged in a logical way; d) Figure 1 has been added for illustration of the preparation of cable sample, DUT and test set-up; e) the temperature chamber temperature tolerance has been changed to ± 3 °C as done in IEC 60794‑1‑22, method F1; f) all required steps have been added to the subclause for temperature cycling as well as the table for the minimum soak time and the figure for the cycle procedure, and removed the reference to IEC 60794-1-22, method F1; g) the maximum change in attenuation has been added to the details to be specified; h) a new subclause 4.5 has been added for details to be reported.