GB/T 15972.21-2008 English PDF

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GB/T 15972.21-2008: Specifications for optical fibre test methods -- Part 121: Measurement methods and test procedures for dimensions -- Coating geometry
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GB/T 15972.21-2008	259	Add to Cart	3 days	Specifications for optical fibre test methods -- Part 121: Measurement methods and test procedures for dimensions -- Coating geometry	Valid

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Basic data

Standard ID: GB/T 15972.21-2008 (GB/T15972.21-2008)
Description (Translated English): Specifications for optical fibre test methods -- Part 121: Measurement methods and test procedures for dimensions -- Coating geometry
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: M33
Classification of International Standard: 33.180.10
Word Count Estimation: 11,194
Date of Issue: 2008-03-31
Date of Implementation: 2008-11-01
Older Standard (superseded by this standard): GB/T 15972.2-1998
Quoted Standard: GB/T 15972.10-2008; GB/T 15972.20-2008
Adopted Standard: IEC 60793-1-21-2001, MOD
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the measurement fiber top coat layer geometry night test methods, establish a unified measurement test procedures and technical requirements. This section applies to Class A and Class B multimode fiber single-mode fiber optic cable fiber optic measurement and finished commercial test.

GB/T 15972.21-2008: Specifications for optical fibre test methods -- Part 121: Measurement methods and test procedures for dimensions -- Coating geometry

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Specifications for optical fibre test methods Part 121. Measurment methods and test procedures for dimensions Coating geometry. ICS 33.180.10 M33 National Standards of People's Republic of China Partially replace GB/T 15972.2-1998 Optical fiber test methods - Part 21. Methods of measurement parameters and dimensions Test procedure --- coating layer geometry (IEC 60793-1-21.2001, Opticalfibres-Part 1-21. Measurementmethods andtestprocedures-Coatinggeometry, MOD) Posted 2008-11-01 2008-03-31 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Preface Ⅰ 1 Scope 1 2 Normative references 1 3 Terms and definitions Methods for measurement of 4 1 5 means 2 6 Sample and Sample Preparation 2 7 Program 2 8 Calculation 2

9 Results

Particular Annex A (normative) Method A --- a side light distribution method of claim 3 Specific Annex B (normative) Method B --- mechanical method of claim 6

Foreword

This part of the jurisdiction of the China Communications Standards Association. This section is drafted. Wuhan Research Institute of Posts and Telecommunications. The main drafters of this section. Cheng Shuling, Chen poetry, Liu Zeheng, Wu Jinliang. This section first revision, it GB/T 15972.2 × other parts together instead of GB/T 15972.2-1998. Optical fiber test methods - Part 21. Methods of measurement parameters and dimensions Test procedure --- coating layer geometry

1 Scope

This section GB/T 15972 specifies the test method for measuring optical fiber preform coating geometric parameters, to establish a uniform test process measurement Procedures and technical requirements. This section applies to Class A and Class B multi-mode fiber single-mode fiber measurement and inspection finished commercial fiber optic cable.

2 Normative references

The following documents contain provisions which, through reference GB/T 15972 in this section constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section. GB/T 15972.10-2008 fiber test methods - Part 10. Measurement methods and test procedures --- General (IEC 60973-1-1.2002, Opticalfibres-Part 1-1. Measurementmethodsandtestprocedures-General andguidance, MOD) GB/T 15972.20-2008 fiber test methods - Part 20. Size parameter measurement methods and test procedures --- Fiber Geometric parameters (IEC 60793-1-20.2001, Opticalfibres-Part 1-20. Measurement methodsandtest procedures-Fibergeometry, MOD)

3 Terms and Definitions

The following terms and definitions apply to this section. 3.1 When the fiber after drawing or drawn on the surface of the coated fiber cladding single/multi-layer protective coating material for optical fiber to provide the desired most Little protection (such as a protective layer 250μm). 3.2 On single/multi-layer pre-coated fiber is then applied single/multi-layer coating material to provide additional protection required for the optical fiber, or the pre-coated fiber Together to form a special structure (eg 900μm buffer layer, tight jacketed fiber or ribbon).

4 methods for measurement

Fiber coating layer geometry are the basic parameters of the fiber, during the fiber splices, connectors, cables and subsequent measurement step into a pre-need Known geometric characteristics of the fiber coating. This section shows two test methods for measuring fiber coating geometric parameters, the range of two test methods and their application as listed in Table 1. ......

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