1、The Teleconmiunications Industry Association represents the conmiunications sector of NOTICE TIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings between manufacturers and purchasers, facilitating interchangeability and improvemen
2、t of products, and assisting the purchaser in selecting and obtaining with minimum delay the proper product for their particular need. The existence of such Publications shall not in any respect preclude any member or non-member of TIA from manufacturing or selling products not conforming to such Pu
3、blications. Neither shall the existence of such Documents preclude their voluntary use by non-TIA members, either domestically or internationally. TIA DOCUMENTS TIA Documents contain information deemed to be of technical value to the industry, and are published at the request of the originating Comm
4、ittee without necessarily following the rigorous public review and resolution of comments which is a procedural part of the development of a American National Standard (ANS). TIA documents shall be reviewed on a five year cycle by the formulating Committee and a decision made on whether to reaffirm,
5、 revise, withdraw, or proceed to develop an American National Standard on this subject. Suggestions for revision should be directed to: Standards those using the IECQ system call out only international (usually IEC) documents. The NECQ System is under the jurisdiction of the Electronic Components Ce
6、rtification Board (ECCB), which oversees three key areas: a System Standards Organization (which is the EIA), a System Supervising Inspectorate (which is Underwriters Laboratories, Inc.), and a National Calibration Service (which is the National Institute of Standards and Technology, operating in co
7、njunction with a U.S. network of calibration laboratories). This Generic Specification incorporates several Quality Assessment Procedures. It utilizes appropriate aspects of the ANSI/ASQC QSO-series of quality standards that are compatible 1 STD-EIA TIA-Y920000-B-ENGL 1997 = 323Yb00 Ob14544 241 TIAE
8、IA-4920000-B with, and technically equivalent to, their counterparts in the IS0 9000-series. This gives the preparer of a Detail Specification a choice of options to select. 2 STD-EIA TIA-4920000-B-ENGL 1997 = 3234b00 Ob14545 188 TIA/EIA-4920000-B Details of the NECQ (IECQ) documentation system are
9、given in EIAs Engineering Publications EP-11-A and EP-14. For further information contact the Systems Management Board, c/o ECCB, Inc., 2500 Wilson Boulevard, Arlington, VA 22201 -3836. 1 Scope This Generic Specification is applicable to optical fibers for use in communications systems and in other
10、systems employing similar technologies. The object of this specification is to establish - uniform requirements for dimensions, and for mechanical, optical, and environmental performance; - a method of classification of optical fibers; - uniform quality assessment protocols; and - common test method
11、s. 2 Normative references The following standards and specifications contain provisions which, through reference in this text, constitute provisions of this document. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based
12、 on this document are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. ANSI and TIA maintain registers of currently valid national standards published by them. 2.1 ANSI American National Standards Institute, 1 1 West 42nd Street, New Yo
13、rk, NY 10036 ANSI 2136.2 Safe use of optical fiber communications systems utilizing laser diodes and LED sources (issued 1988) 3 TI AEI A-4920000-B 2.2 ASQC American Society of Quality Control, 310 West Wisconsin Avenue, Milwaukee, WI 53203 ANSVASQC Q91 Quality systems - Model for Quality Assurance
14、in desigddevelopment, production, installation, and servicing (issued 1994) - technically equivalent to IS0 9001 ANSVASQC Q92 Quality systems - Model for Quality Assurance in production and installation (issued 1994) - technically equivalent to IS0 9002 ANSI/ASQC Z1.4 Sampling procedures and tables
15、for inspection by aftributes (ANWMIL-STD-105) (issued 1981) - Technically equivalent to IEC Publication 410 ANSVASQC 21.9 Sampling procedures and tables for inspection by variables for percent non-conformance (MIL-STD-414) (issued 1 980) 2.3 ASTM American Society for Testing and Materials, 191 6 Rac
16、e Street, Philadelphia, PA 191 03 E 29 Standard practice for using significant digits in test data to determine conformance with specifications (issued 1990) E 380 Standard for metric practice (issued 1986) 2.4 IEEE Institute of Electrical and Electronic Engineers, Inc., 445 Hoes Lane, P.O. Box 1331
17、, Piscataway, NJ 08855-1 331 ANSIIIEEE-260 Letter symbols for SI units and certain other units of measurement (issued 1978, reaffirmed 1985) 2.5 IS0 international Organization for Standardization, 1 rue de Varemb, Case postal 56, CH-1211, Geneva 20, Switzerland IS0 9001 Quality systems - - model for
18、 Quality Assurance in desigddevelopment, production, installation, and servicing (issued 1 994) 4 STD-EIA TIA-47200DO-B-ENGL 1777 3239b00 Ob14547 T50 TIA/EIA-4920000-B IS0 9002 2.6 NIST Quality systems - model for Quality Assurance in production and installation (issued 1994) National Institute of S
19、tandards and Technology, Gaithersburg, MD 20899 NIST Special Publication 330 The International System of Units (SI) (issued 1991) 2.7 TIAEIA Telecommunications industry Association, Electronic industries Association, 2500 Wilson Boulevard Arlington, Virginia 22201 -3834 All documents in the followin
20、g list that are prefixed with “EIA/TIA have been approved by the American National Standards Institute (ANSI) and may appear with the “ANSI/“ prefix. EIA-440-A Fiber optic terminology (issued 1 988) EIPJTIA-455-A Standard test procedures for fiber optic fibers, cables, transducers, sensors, connecti
21、ng and terminating devices, and other fiber optic components (issued 1 991 ) NOTES 1 All test procedures are individual documents issued as addenda to Basic Specification EIAlTIA-455-A, e.g. ElmlA-455-78A (or FOTP-78). The revision status is indicated by means of letters - A, B, C, etc. - immediatel
22、y following each publication number. See 5.1.1.3 for additional information on verification of edition. 2 Some documents in this list may use older prefixes, such as “RS-“ or “EIA-“, rather than “EIAlTIA-.“ New publications issued in May 1992 and beyond usually carry the prefix, “TINEIA-.“ EP-11 -A
23、Guide for the preparation of specifications in the NEC0 system (issued 1990) (technically equivalent to IEC Guide 102, Third Edition, 1989) EP-13 IA specification, standard and part numbering (issued 1986) NQ-P-1 Basic rules of the United States National Electronic Components Quality Assessment syst
24、em (NECQ-System) (issued 1 988) NQ-P-2 Rules of procedure of the United States National Electronic Components Quality Assessment system (NECQ-System) (issued 1 988) TSB-63 Reference guide for fiber optic test procedures (issued 1993) 5 TlA/EIA-4920000-B No Number FIA Engineering style manual (issued
25、 1992) (Derived mainly from IECASO DIRECTIVES, Part 3, Drafting and presenfation of International Standards, Second Edition, 1989) 3 Background information 3.1 Terminology Use terminology, whenever possible, from EIA-440-A. Any terms used in this document, and not defined in EIA-440-A, will be defin
26、ed as needed. 3.2 Units and symbols Take units, graphic symbols, and letter symbols, whenever possible, from ANSMEEE-260 or NIST Special Publication 330. Use the rounding-off method of ASTM E 29. System International (SI) units shall be the preferred units of measure. NIST Special Publication 330 is
27、 the definitive work on SI. US. Customary units (inch-lb-sec) may be shown parenthetically. Conversely, if U.S. Customary units are used, SI units may also be indicated. Refer to ASTM E 380 for conversions between the systems. 3.3 Performance criteria To the maximum extent possible, specify the fibe
28、r requirements in terms of dimensional, mechanical, optical, and environmental performance. If the performance criteria are insuff icient to specify a suitable product, add other requirements to the Detail Specification. 3.4 Preferred values Each Sectional Specification may prescribe the preferred v
29、alues appropriate to the class. The preferred values prescribed in the Sectional Specification may also be repeated in the Blank Detail Specification if it is practical to do so. “Preferred“ is synonymous with “recommended.“ 3.5 Classes of fibers Table 1 lists various classes of fibers based upon ce
30、rtain characteristics. Subdivisions of any class and specific definition of a fiber are accomplished in the Sectional and Detail Specifications. See Figure 1 for a diagram of current fiber documents. 6 STD-EIA TIA-4720000-B-ENGL 1777 3234b00 Ob19547 23 D TIA/EIA-4920000-B General 1 cT:Ms tvDe Mlti-
31、mode Ila Ilb Single- mode I IVd Special 1 v Table 1 - Classes of optical fibers Equiva- Profile lent IEC Descrip parameter, Core Cladding category tion) 92) materiais) materiais) Al Graded 3g1 Glass Glass A2.1 Quasi-araded 10 a 1 Glass Glass - A2.2 Step g10 Glass Glass A3 Step g10 Glass Piast ic4) A
32、3 Step g10 Glass Plastics) A4 Step g10 Plastic Plastic B1 Dispersion WA Glass Glass 82 Dispersion N/A Glass Glass 83 Dispersion WA Glass Glass unshifted shifted flattened None I Non-zero 1 WA I Glass I Glass NIA = not applicable )Multimode optical fibers are described by their refractive index profi
33、le, and single-mode fibers are classified by their dispersion characteristics. )The profile parameter, g, applies only to multimode fibers. See EIA-440-A for definition. Use this parameter for classification purposes only and not for specification. It is therefore seldom measured. When measuring, us
34、e FOTP-29 or FOTP-44. 3)The term “glass“ refers to material usually consisting of nonmetallic oxides. The composition of some fibers may be all glass, or glass and glass / hard polymeric composites. Other glass compositions in the future may require that this definition be broadened. 4)The cladding
35、of class la fibers is retained for purposes of connection by mechanical or fusion-splicing means. 5)The cladding of class Ilb fibers is removed for purposes of connection by mechanical or fusion-splicing means. 7 STD*EIA TIA-4920000-B-ENGL 1997 3234b00 Ob14550 545 TIA/EIA-4920000-B All optical fiber
36、s have a core, with cladding. Most fibers also have a coating. - The core material of an optical fiber is surrounded by a cladding material of lower refractive index. The core and cladding materials constitute the light-guiding structure. - The cladding may be coated with other materials to provide
37、such desirable characteristics as physical protection, increased product strength, or isolation from external mechanical forces. - There may be an illustration in the Detail Specification showing the fiber core, cladding, and coating(s). 3.6 Specification order 3.6.1 General provisions The Specifica
38、tion Order shall utilize all of the principles of the IECQ (hence NECQ) documentation system described in EIAs Engineering Publication EP-11 -A. 3.6.2 Order of precedence Design requirements for individual fibers shall be as specified in accordance with the applicable Sectional Specifications and De
39、tail Specifications. In the event of a conflict, Sectional Specifications supersede Generic Specifications, Detail Specifications supersede Sectional Specifications, and procurement documents or contracts may contractually supersede Detail Specifications. Note, however, that Detail Specifications sh
40、all not specify requirements that delete or diminish those of the Generic, Sectional, or Blank Detail Specifications. Figure 1 shows the general organization of TIAS optical fiber specification documents. The Generic, Sectional, and most Blank Detail Specifications, shown below, represent the curren
41、t set of documents and an example of one of those in the planning stage (Class “X“). Other Sectional and Blank Detail Specifications may be added later, as needed, using the same general pattern. (Some of the letter designations ater the “492“ for the Detail Specifications apply to actual documents,
42、 while others are for illustration purposes only.) 3.6.3 Multicellular attributes Multicellular attributes are those that vary with manufacturing mix and application of use. For example, a variety of fiber lengths is produced, and users specify length according to the application needs. The same is
43、true for attenuation coefficient. It is permissible to substitute fiber with one or more multicellular attributes exceeding the specification (e. g., a longer length, lower attenuation coefficient, etc.). STD-EIA TIA-4920000-B-ENGL 1997 3234b00 Ob14551 q1 GENERIC, TIA/EIA-4920000-B - TIMIA-4920000-B
44、 BASIC, ElMIA-455-A 1 etc.+ SECTIONAL Class IVa 1 :o00 SECTIONAL Class la - 492A000-A r (All) class la -492AA00-A I -492 Class IVb Class “X“ I etc.-+ Class IVb Class IVb, Alt. L BLANK DETAIL BLANK DETAIL -492CA00 492CB00 Class IVa, Alt. r etc. -+ I I etc. + I IstDETAIL 1 I 2l?d911i I -4 92AAAA-A io0
45、 etc. etc.+ Figure 1 - General organization of fiber specification documents 9 TIA/EIA-4920000-8 Mode field diameter may be considered a specialized form of multicellular attribute in that its nominal value varies within a narrow range from manufacturer to manufacturer, depending on the particular d
46、esign and construction. The Sectional Specification shall identify the applicable multicellular attributes. To prevent proliferation of documents, it is recommended that a Detail Specification not be published for each combination of multicellular attributes. The Detail Specification shall establish
47、 the range of values for each multicellular attribute. It shall also establish how the part- number suffix (see 3.8.2 below, plus Annex B of the applicable Blank Detail Specification) may be used to indicate cells within each range, for a maximum of five attributes. 3.7 Specification style and forma
48、t This and all other TIA specifications that make use of the NECQ system shall use the style and format given in the TIA Engineering Style Manual. The style manual closely follows its international counterpart, the IECASO DIRECTIVES, Part 3. TIAs deliberate policy is to “harmonize“ its standards doc
49、uments as closely as practicable with international ones. 3.8 Numbering systems TINEIA document and part numbers are assigned in accordance with Engineering Publication EP-13. 3.8.1 Specification numbering TIAs Standards and Technology Department assigns document numbers. Tentative document numbers are assigned at the time of a Standards Proposal ballot. Firm document numbers are assigned when a document is approved and sent for printing. In the case where a manufacturer prepares a Detail Specification that will not be balloted, as provided for under
