Detail of YD/T 3535.2-2022

Introduction of YD/T 3535.2-2022

Cable assemblies for data center generic cabling— Part 2: Pre-terminated optical cable assemblies with duplex plugconnectors 1 Scope This document specifies the classification and models, materials and structures, external dimensions, assembly polarity, and performance requirements for pre-terminated optical cable assemblies with duplex plugconnectors (hereinafter referred to as “assemblies”). It also describes the relevant test methods, inspection rules, marking, packaging, transport, and storage of assemblies. This document is applicable to the design, development, production, and inspection of pre-terminated optical cable assemblies with duplex plugconnectors for data center generic cabling. It may also be used as a reference for assemblies used in other application scenarios. 2 Normative references The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 5169.5 Fire hazard testing for electric and electronic products—Part 5: Test flames—Needle test method—Apparatus, confirmatory arrangement and guidance (IEC 60695-11-5: 2004, IDT) GB/T 7424.2-2008 Optical fibre cable generic specification—Part 2: Basic optical cable test procedures (IEC 60794-1-2: 2003, MOD) GB/T 9771.3 Single-mode optical fibres for telecommunication—Part 3: Characteristics of an extended wavelength band dispersion unshifted single-mode optical fibre GB/T 9771.7 Single-mode optical fibres for telecommunication—Part 7: Characteristics of a bending loss insensitive single-mode optical fibre for the access network GB/T 12357.1-2015 Multimode optical fibres for telecommunication—Part 1: Sectional specification for category A1 multimode fibres (IEC 60793-2-10: 2011, NEQ) GB/T 15972.40-2008 Specifications for optical fibre test methods—Part 40: Measurement methods and test procedures for transmission and optical characteristies—Attenuation (IEC 60793-1-40: 2001, MOD) GB/T 17651.2 Measurement of smoke density of cables burning under defined conditions—Part 2: Test procedure and requirements (GB/T 17651.2-1998, IEC 61034-2: 1997, IDT) GB/T 18380.12 Tests on electric and optical fibre cables under fire conditions—Part 12: Test for vertical flame propagation for a single insulated wire or cable—Procedure for 1 kW pre-mixed flame (IEC 60332-1-2: 2004, IDT) GB/T 18380.35 Tests on electric and optical fibre cables under fire conditions—Part 35: Test for vertical flame spread of vertically-mounted bunched wires or cables—Category C (IEC 60332-3-24: 2000, IDT) GB/T 26125 Electrical and electronic products—Determination of six regulated substances (lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers) (GB/T 26125-2011, IEC 62321: 2008, IDT) YD/T 1258.3 The series of indoor optical fibre cables—Part 3: Simplex and duplex cable for use in premises cabling YD/T 1258.4 Indoor optical fibre cables—Part 4: Multi-fibre optical cables YD/T 1272.1-2018 Optical fiber connector—Part 1: Type LC YD/T 1272.3-2015 Optical fiber connector—Part 3: Type SC YD/T 1272.4-2018 Optical fiber connector—Part 4: Type FC YD/T 2965-2015 Characteristics of a bending loss insensitive multimode optical fibre YD/T 3535.1-2019 Cable assemblies for data center generic cabling—Part 1: Pre-terminated optical cable assemblies with multi-fiber connectors IEC 60793-2-10 Optical fibres—Part 2-10: Product specifications—Sectional specification for category A1 multimode fibres IEC 62321-8 Determination of certain substances in electrotechnical products—Part 8: Phthalates in polymers by gas chromatography-mass spectrometry (GC-MS), gas chromatography-mass spectrometry using a pyrolyzer/thermal desorption accessory (Py-TD-GC-MS) 3 Terms and definitions For the purposes of this document, the terms and definitions given in YD/T 1272.1-2018, YD/T 1272.3-2015, and YD/T 3535.1-2019 apply. 4 Classification and models 4.1 Classification 4.1.1 The assemblies are classified into dual-ended assemblies with dual-cable and dual-fiber configurations, dual-ended assemblies with single-cable and dual-fiber configurations, multi-ended assemblies with dual-cable and dual-fiber configurations, and multi-ended assemblies with single-cable and dual-fiber configurations by structure. 4.1.2 The assemblies are classified into single-mode and multimode assemblies by fiber type. 4.1.3 The assemblies are classified into Type LC, SC, FC, LC to SC, LC to FC, and SC to FC assemblies by connector type. 4.1.4 The assemblies are classified into A-A assemblies and A-B assemblies by polarity. 4.2 Type See Table 1 for the type codes of the assemblies, and Figure 1 for their composition. Table 1 Type code Classification Code Description Code GZJ Pre-terminated optical cable assemblies Assembly structure code S Dual-ended assemblies with dual-cable and dual-fiber configuration SU Dual-ended assemblies with single-cable and dual-fiber configuration Assembly structure code D Multi-ended assemblies with dual-cable and dual-fiber configuration DU Multi-ended assemblies with single-cable and dual-fiber configuration Fiber type code OS2 B1.3 single-mode fiber B6.a1, B6.a2, B6.b2, and B6.b3 single-mode fiber OM2aa A1a.1 multimode fiber OM2bb OM3aa A1a.2 multimode fiber OM3bb OM4aa A1a.3 multimode fiber OM4bb OM5aa A1a.4 multimode fiber OM5bb Connector type code LC Type LC connector SC Type SC connector FC Type FC connector TBD Other types of connectors Polarity code A-A A-A polarity A-B A-B polarity A-A(B) Convertible between A-A and A-B polarity a The suffix “a” indicates compliance with macrobend loss requirements for A1a fiber as specified in GB/T 12357.1-2015. b The suffix “b” indicates compliance with macro macrobend loss requirements as specified in YD/T 2965-2015. Figure 1 Composition of assembly type codes 4.3 Specifications The specifications of the assemblies are represented by the number of terminations, connector type codes, cable sheath material, cable diameter, and length of the assembly. See Table 2 for the classification and codes for connector types. The cable diameter is measured in millimeters (mm), and the assembly length is measured in meters (m), both rounded off to one decimal place. See Figure 2 for the composition of the specification.

Contents of YD/T 3535.2-2022

Foreword i Introduction ii 1 Scope 2 Normative references 3 Terms and definitions 4 Classification and models 4.1 Classification 4.2 Type 4.3 Specifications 4.4 Model and marking 5 Requirements 5.1 Operating environment 5.2 Material and structure 5.3 Appearance and dimensions 5.5 Polarity of assembly 5.6 Performance requirements 6 Test methods 6.1 Environmental condition for test 6.2 Appearance and dimension 6.3 Length 6.4 Polarity of assembly 6.5 Transmission performance 6.6 Geometric dimension of endfaces 6.7 Mechanical properties 6.8 Environmental properties 6.9 Combustion property 6.10 Environmental performance 6.11 Error in meter counting of optical cables 7 Inspection rules 7.1 General 7.2 End-of-manufacturing inspection 7.3 Type inspection 8 Marking, packaging, transport and storage 8.1 Marking 8.2 Packaging 8.3 Transport 8.4 Storage Annex A (Normative) Polarity of assembly