光纤通信系统设计指南第14部分:光纤设备中衰减测量不确定度的测定

[中文适用范围]： 本部分IEC 61282（技术报告）确立了使用光源和光功率计对多模和单模光纤布线进行衰减测量时，相关不确定度的详细分析和计算方法。 [外文原描述]： IEC TR 61282-14:2019 which is a Technical Report, establishes the detailed analysis and calculation of the uncertainties related to the measurement of the attenuation of both multimode and single mode optical fibre cabling using optical light sources and power meters. This second edition cancels and replaces the first edition published in 2016. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - in the title: replacement of "guide" by "guidelines"; - text adaptation to allow both standard grade B and reference grade connectors for termination of test cords; - addition of values needed for calculation of uncertainties, when standard grade connectors are used, to Annex D; - correction of minor inconsistencies in Equation (18) and after. Keywords: measurement uncertainty of the attenuation of fibre optic cabling