Standard No.:	GB/T 15972.49-2008
English Name:	Specifications for optical fibre test methods - Part 49: Measurement methods and test procedures for transmission and optical characteristics - Differential mode delay
Chinese Name:	光纤试验方法规范 第49部分：传输特性和光学特性的测量方法和试验程序-微分模时延
Chinese Classification:	M33    Optical communication equipment
Professional Classification:	GB    National Standard
ICS Classification:	33.180.10 33.180.10    Fibres and cables 33.180.10
Source Content Issued by:	AQSIQ; SAC
Issued on:	2008-3-31
Implemented on:	2008-11-1
Status:	abolished
Superseded by:	GB/T 15972.49-2021 Specifications for optical fibre test methods—Part 49: Measurement methods and test procedures for transmission characteristics—Differential mode delay
Superseded on:	2022-5-1
Abolished on:	2022-05-01
Superseding:	GB/T 15972.4-1998 Generic specification for optical fibres―Part 4:Measuring methods for transmission and optical characteristics
Target Language:	English
File Format:	PDF
Word Count:	6000 words
Translation Price(USD):	180.0
Delivery:	via email in 1~3 business day

本部分为首次发布。本部分为GB/T 15972的第49部分。本标准规定了光纤分模时延的试验方法，确立了测量的统一试验程序和技术要求。本标准适用于A1类渐变折射率多模光纤维分模时延的测量和成品光纤光缆的商业性检验。本部分与IEC 60793-1-49：2003主要差异如下：
——按照我国标准的编排格式和表述要求，对一些内容安排做了调整，增加了“第4章 试验方法概述”，将IEC 版本的第1章某些内容放在本部分第4章；将IEC版本的第8章和第9章合并作为本部分第9章；
——删除了附录A，附录号重编。