Standard No.:	YD/T 908-2011
English Name:	The Naming Rules for Type of Optical Fibre Cables
Chinese Name:	光缆型号命名方法
Professional Classification:	YD    Professional Standard - Telecommunication
Source Content Issued by:	Ministry of Industry and Information Technology
Issued on:	2011-12-20
Implemented on:	2012-2-1
Status:	superseded
Superseded by:	YD/T 908-2020 Naming rules for type of optical fibre cables
Superseded on:	2020-7-1
Superseding:	YD/T 908-2000 Naming rules for type of optical fibre cables
Target Language:	English
File Format:	PDF
Word Count:	7500 words
Translation Price(USD):	220.0
Delivery:	via email in 1 business day

The rules for naming model of optical fibre cables 1 Scope This standard specifies the rules for naming model of optical fibre cables for telecommunication. This standard is applicable to the naming of the model of optical fibre cables for telecommunication. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies. GB/T 9771 (All parts) Single-mode optical fibres for telecommunication GB/T 12357 (All parts) Multimode optical fibres for telecommunication YD/T 322-1996 Copper-core, polyolefin insulated, composite aluminum-plastic sheathed cables for urban local communications YD/T 1173-2010 Flame-retardant and fire resistant flexible cable for power supply system for telecommunications 3 Composition of model 3.1 Model composition The model consists of three major parts: type, specification and special performance mark (can be defaulted). 3.2 Format of model composition The format of the model composition is shown in Figure 1. There shall be a space between the type code, specification code and special performance mark (can be defaulted). Figure 1 Format of model composition 4 Model composition, code and meaning 4.1 Type 4.1.1 Composition and format of type The type consists of 5 parts, each part is represented by a code, as shown in Figure 2. The structural characteristics refer to the characteristics of the cable core structure and the derived structure of the optical fibre cable. Figure 2 Composition of type of optical fibre cable   4.1.2 Classification code and meaning 4.1.2.1 General By applicable occasion, optical fibre cables can be divided into several categories such as outdoor optical fibre cables, indoor optical fibre cables and indoor-outdoor optical fibre cables, etc. And each major category can also be subdivided into smaller categories. When existing classification codes cannot meet the needs for naming new type of optical fibre cables, new characters shall be added behind the corresponding code to facilitate expression. The new characters added shall meet the following requirements: ——An underlined English letter shall be used;

Foreword i 1 Scope 2 Normative references 3 Composition of model 3.1 Model composition 3.2 Format of model composition 4 Model composition, code and meaning 4.1 Type 4.2 Specification 4.3 Special performance mark 5 Examples Annex A (Informative) Classification codes of multimode optical fibres Annex B (Informative) Classification codes of single-mode optical fibres Bibliography