IEC 60793-2-10:20 19作为IEC 60793-2-10:20 19 RLV提供，其中包含国际标准及其红线版本，显示了与上一版本相比技术内容的所有变化。IEC 60793-2-10:20 19适用于光纤子类别A1-OM1、A1-OM2、A1-OM3、A1-OM4、A1-OM5和A1d。这些光纤用于或可结合在信息传输设备和光缆中。子类别A1-OM2、A1-OM3、A1-OM4和A1-OM5适用于50/125 μ m四种带宽等级的分级折射率光纤。这些带宽等级中的每一个被定义用于由“A”或“b”后缀区分的两个级别的宏弯曲损耗性能。那些带有后缀“A”的子类别被指定为满足传统的macrobend损耗性能水平。那些带有后缀“b”的子类别被指定为满足增强的宏观弯曲损失（即。e.更低的损耗）性能水平。子类别A1-OM5被指定为支持850nm至950nm附近的单波长或多波长传输系统。对于A1-OM3和A1-OM4，也包括覆盖该波长范围的带宽信息，尽管没有规范地指定。子类别A1-OM1适用于62,5/125 μ m渐变折射率纤维，子类别A1d适用于100/140 μ m渐变折射率纤维。其它应用包括但不限于以下:承载数据、语音和/或视频服务的电话、分配和本地网络中的短距离、高比特率系统；内部建筑物内和建筑物间光纤安装，包括数据中心、局域网（LAN）、存储区域网络（SAN）、专用小交换机（PBX）、视频、各种多路复用用途、外部电话电缆设备使用和杂项相关用途。三种类型的要求适用于这些纤维: -IEC 60793-2中定义的一般要求； -本文件涵盖的A1类多模光纤共有的具体要求，在第5条中给出； -适用于单个纤维子类别和型号或特定应用的特殊要求，这些要求在标准规范附录A至D中定义。 本第七版取消并取代2017年出版的第六版。本版构成技术修订版。与上一版本相比，该版本包括以下重大变化:修订了A1多模光纤的命名约定，更好地与ISO/IEC标准中的命名约定相匹配。本文档范围内概述了这些更改以及新名称的交叉引用表。 关键词:光纤子类别A1-OM1、A1-OM2、A1-OM3、A1-OM4、A1-OM5和A1d

IEC 60793-2-10:2019 is available as IEC 60793-2-10:2019 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 60793-2-10:2019 is applicable to optical fibre sub-categories A1-OM1, A1-OM2, A1-OM3, A1-OM4, A1-OM5, and A1d. These fibres are used or can be incorporated in information transmission equipment and optical fibre cables. Sub-categories A1-OM2, A1-OM3, A1-OM4 and A1-OM5 apply to 50/125 μm graded index fibre in four bandwidth grades. Each of these bandwidth grades is defined for two levels of macrobend loss performance that are distinguished by "a" or "b" suffix. Those sub-categories with suffix "a" are specified to meet traditional macrobend loss performance levels. Those sub-categories with suffix "b" are specified to meet enhanced macrobend loss (i.e. lower loss) performance levels. Sub-category A1-OM5 is specified to support single wavelength or multi-wavelength transmission systems in the vicinity of 850 nm to 950 nm. Although not normatively specified, bandwidth information covering this wavelength range is also included for A1-OM3 and A1-OM4. Sub-category A1-OM1 applies to 62,5/125 μm graded index fibre and sub-category A1d applies to 100/140 μm graded index fibre. Other applications include, but are not restricted to, the following: short reach, high bit-rate systems in telephony, distribution and local networks carrying data, voice and/or video services; on-premises intra-building and inter-building fibre installations including data centres, local area networks (LANs), storage area networks (SANs), private branch exchanges (PBXs), video, various multiplexing uses, outside telephone cable plant use, and miscellaneous related uses.Three types of requirements apply to these fibres:
- general requirements, as defined in IEC 60793-2;
- specific requirements common to the category A1 multimode fibres covered in this document and which are given in Clause 5;
- particular requirements applicable to individual fibre sub-categories and models, or specific applications, which are defined in the normative specification Annexes A to D.
This seventh edition cancels and replaces the sixth edition published in 2017. This edition constitutes a technical revision. This edition includes the following significant change with respect to the previous edition: revision of the naming convention for A1 multimode fibres, which better matches with those found in ISO/IEC standards. These changes are outlined in the scope of this document along with a cross reference table for the new names.
Keywords: optical fibre sub-categories A1-OM1, A1-OM2, A1-OM3, A1-OM4, A1-OM5, and A1d