1、 DOCUMENT Detail Specification for 62.5 pm Core Diametedl25 pm Cladding Diameter Class Ia Graded Index Multimods Optical Fibers TIA-492AAAA-A 1 (Revision of EIA-492AAAA) Reaffirmed September 30,2002 January 1998 TELECOMMUNICATIONS INDUSTRY ASSOCIATION The Teleconmiunications Industry Association rep
2、resents the conmiunications sector of Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NOTICE TIA Engineering Standards and Publications are designed to serve the public interest through
3、eliminating misunderstandings between manufacturers and purchasers, facilitating interchangeability and improvement 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
4、 respect preclude any member or non-member of TIA from manufacturing or selling products not conforming to such Publications. Neither shall the existence of such Documents preclude their voluntary use by non-TIA members, either domestically or internationally. TIA DOCUMENTS TIA Documents contain inf
5、ormation deemed to be of technical value to the industry, and are published at the request of the originating Committee 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 documen
6、ts shall be reviewed on a five year cycle by the formulating Committee and a decision made on whether to reaffirm, revise, withdraw, or proceed to develop an American National Standard on this subject. Suggestions for revision should be directed to: Standards nominal value shall be indicated on purc
7、hase order Coating composition: usually made from one or more plastic materials 01 compositions, to protect the fiber during manufacture, handling, and use Cladding diameter: 125.0 vm Application(s): on-premise! interbuilding and intrabuilding fibe installations, including LANs, PBXs video, various
8、multiplexing uses outside telephone cable plant use and miscellaneous related uses Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,- . STD-EIA TIA-492AAAA-A-ENGL 1778 m 3234600 057L74b 31
9、2 m TINEIA-492AAAA-A Contents Foreword . v Introduction 1 1 Scope 1 2 Normative references 1 3 Background information . 2 3.1 Required specifications . 2 3.2 Marking . 2 3.3 Numbering system 2 3.4 Other requirements . 2 3.5 Ordering information . 3 3.6 Additional information (not for inspection purp
10、oses) . 3 3.7 Additional requirements 3 4 Inspection requirements 3 3 4.1 Qualification approval . 3 4.2 Quality conformance Inspection 5 Quality assessment tables . 4 Annex A (normative). Quality Conformance Inspection (QCI) codes and levels . 10 Annex B (normative). Alternative part-number codes f
11、or multicellular attributes 11 Annex C (informative). Surrogate and other test procedures . 14 Annex D (informative). Material dispersion specification 16 Table 1 . Dimensional specifications 5 Table 2 . Mechanical specifications . 6 Table 3 - Optical specifications 7 Table 4 - Environmental specifi
12、cations 9 . 111 Previous page is blank Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,- STD*EIA TIA-472AAAA-A-ENGL 2778 3234b00 U573747 257 TINE IA-492AAPA-A Foreword (This Foreword is i
13、nformative only and is not part of this Standard.) This document comes from TIA Standards Proposal No. 3006-B, formulated under the cognizance of TIA FO-6, Committee on Fiber Optics, FO-6.6, Subcommittee on Optical Fibers and Materials, and FO-6.6.2, Working Group on optical fiber specifications. NO
14、TE - This document was previously published as EIMIA492AAAA. The original version of this document was formulated under the cognizance of TIA TR-41.8.1, Ad Hoc Working Group on Building Wiring for Commercial Enterprises. This fiber Specification supports TIAS fiber-optic cable specifications and is
15、also intended to become a Federal Information Processing Standards Publication (FIPS PUB). There are 4 annexes: Annexes A and 6 are normative; Annexes C and D are informative. Key Words: multimode, detail specification V Previous page is blank Copyright Electronic Industries Alliance Provided by IHS
16、 under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-STD-EIA TIA-472AAAA-A-ENGL 1778 m 3234b00 0.571748 175 TINE IA-492A4AA-A) Detail Specification for 62.5-pm core diameter/I25=pm cladding diameter class la graded-index multimode optical fibers I
17、 n t rod uct ion This Specification enables end users and manufacturers of fiber-optic cable to specify one of the choices of multimode optical fiber contained in the cable. This Specification, in conjunction with Generic Specification TIAIElA-4920000-B and Sectional Specification TIAIEIA-492AOOO-A,
18、 follow the specification structure of the National Electronic Components Quality Assessment System (NECQ). I Scope This Detail Specification applies to class la, graded-index, 62.5/125 pm multimode optical fiber used as a component in the manufacture of fiber-optic cable used in buildings. Applicat
19、ions include, but are not restricted to, the following: on-premises intrabuilding and interbuilding fiber installations, including LANs, PBXs, video, various multiplexing uses, outside telephone cable plant use, and miscellaneous related uses. 2 Normative references Where applicable, this Detail Spe
20、cification shall use information and related documents derived from. and referenced in: - TIA/EIA-4920000-B, Generic Specification for optical fibers; 1 Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without licens
21、e from IHS-,-,-TIAIEIA-492AAAA-A - TIAiEIA-492AOOO-A, Sectional Specification for class la graded-index multimode optical fibers; 2 Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,- STD-E
22、IA TIA-492AAAA-A-ENGL 1998 W 3234b00 0593953 552 W TINE IA-492AAAA-A) - TIA/EIA-492AAOO-A, Blank Detail Specification for class la graded-index multimode optical fiber. (Hereafter in this document, the above documents will be referred to as the Generic Specification, Sectional Specification, and Bla
23、nk Detail Specification, respectively.) 3 Background information 3.1 Required specifications This Standard takes the entire contents of clause 4 of the Sectional Specification into account. The tables of this document include the minimum list of attributes specified in clause 4 of the Sectional Spec
24、ification. 3.2 Marking Marking shall conform to the provisions of 3.3 of the Sectional Specification. 3.3 Numbering system The numbering system shall conform to 3.8 of the Generic Specification. Use the part number for all items on every purchase order to define .particular choices for certain param
25、eters that have multiple limit cells. See Annex B for definition and discussion of the part-number system. 3.4 Other requirements 3.4.1 Coating - Generic composition: acrylic or other suitable polymeric material. - Removal method: mechanical or other suitable removal method. 3.4.2 Factory splicing F
26、actory splicing is not permitted. 3 Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TINEIA-492AAAA-A) 3.4.3 Marking Mark the reel to conform to the principles given in 3.3 of the Section
27、al Specification. 3.4.4 Packaging Packaging shall conform to the principles given in 3.9.4 of the Generic Specification. 3.4.5 Health and safety Health and safety considerations shall conform to the principles given in 3.9.5 of the Generic Specification. 3.5 Ordering information Orders for fibers co
28、vered by this Specification shall contain, in clear or in coded form, the following minimum information: - Number and revision indicator of the Detail Specification. - Part number. See also 3.3 and Annex B of this Specification. 3.6 Additional information (not for inspection purposes) This Detail Sp
29、ecification supports Detail Specifications in the series of TIA Standards for fiber- optic cable. Cable Detail Specifications are derived from TIA/EIA-4720000-A, Generic Specification for fiber optic cable, all of which carry the numerical designation “472.“ The following is typical: TIA/EIA-472CAAA
30、, Detail Specification for all-dielectric (construction 7) fiber optic communications cable for indoor plenum use containing class la, 62.5 pm core diameter/? 25 prn cladding diameter optical fibers. 3.7 Additional requirements There are no additional requirements. 5 Previous page is blank Copyright
31、 Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_ _ STD-EIA TIA-972AAAA-A-ENGL 1778 3239b00 0573755 325 TIAIEIA492AAAA-A 4 Inspection requirements 4.1 Qualification approval For qualification app
32、roval, the process shall be in accordance with 5.2 of the Sectional Specification, which in turn references 4.3 of the Generic Specification. The minimum sample size is the same as that specified for periodic requalification in the tables that follow. 4.2 Quality Conformance Inspection (QCI) Quality
33、 Conformance Inspection shall be in accordance with 5.3 of the Sectional Specification. Note that periodic requalification is a standard component of the QCI program. 5 Quality assessment tables Tables 1 through 4 cover both qualification approval and QCI requirements, and represent the required lis
34、t of attributes, as given in 3.1 of this document. NOTE 1 - Column 1 cross references the subclause in the Sectional Specification that gives more detail on preferred values and characteristics. NOTE 2 - Column 3 often lists more than one test procedure for a given parameter. Many test procedures gi
35、ve interchangeable results, based on interlaboratory comparisons. Whenever a non-TINEIA test or a TINEIA surrogate test is called out, there is a reference to Annex D, which gives further details. NOTE 3 - In column 4 certain performance requirements need more detailed discussion than a table can ac
36、commodate. For example, multiple values may be allowed, and specified alternatives are recommended. See Annex B. 6 Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,- STD.EIA TIA-972AAAA-A-
37、ENGL 1998 II 3239b00 059395b 2bl D TINE IA-4 QAAAA-A) Four annexes support the tables: - Annex A explains the QCI codes and levels. - Annex B covers petformance requirements for certain attributes, the details of which cannot readily be accommodated in a table. This (normative) annex covers multicel
38、lular part numbers, as explained in 3.6.3 of the Generic Specification: attributes for which there are multiple limits or multiple nominal values. - Annex C shows a diagram of the material dispersion specification, as Figure 1 - Annex D covers specialized tests such as: those not developed by TIAEIA
39、 (e. g., mechanical counter for length measurement); and those tests (part of EIA/TlA-455-A, usually) that are used as surrogates. Some detail is given. 7 Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without lice
40、nse from IHS-,-,-TIAIEIA492AAAA-A Performance requirements and test conditions 62.5 f 3.0 pm 16% 125.0 f 2.0 prn - 12.0 % 13.0 pm 250 f 15 pm 120 pm Table I - Dimensional specifications Qual. appr. please refer to FOTP-I 69 for further details. Use a laser diode or filtered LED with a known center w
41、avelength. The FWHM should be less than 30 nm. The launch and receive optics should excite and detect only the lowest order modes; therefore single-mode launch and receive optics are desired. When measuring phase- shift, it is essential to prevent ambiguities of 360n degrees, where n is an integer.
42、This can be accomplished by selecting a modulation frequency sufficiently low enough to limit the phase- shift to less than 360 degrees. A phase “zero-length“ reference is needed for each of the measurement frequencies used. This may be accomplished by connecting the test-set launch and receive opti
43、cs back-to-back and recording the phase for each measurement frequency. 19 Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIAIEIA492AAAA-A Connect the test fiber to the measurement appa
44、ratus and record the phase for each measurement frequency. The group-delay at each measurement frequency for the calibration and test sample measurement may be determined from the measured phase-shift by: t = 4/(360 x 9 where t = group-delay, 4 = measured phase, and f = modulation frequency. The fib
45、er length in meters may be determined by: L = (tm - tr) x c/n where L = length, tm = total group-delay determined for the test sample measurement, tr = total group-delay determined from the “zero length“ reference measurement, c = the speed of light, and n = the effective group-index value of the fi
46、ber under test. 20 Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,- STD-EIA TIA-472AAAA-A-ENGL 1778 D 323Lib00 0572032 799 D TINE IA-492AAAA-A) Annex D (informative) Material dispersion
47、specification 0.12 0.11 N S E y 0.10 E #I Q ai Q o #I - r Q ai u .- e 0.09 .- 5!- 0.08 0.07 1348 0.093 Allowed region of zero dispersion wavelengths SP-3001 -B, -492AOOO-A, Sectional for Class la; SP-3002-B, - 192C000, Sectional for Class IVa; SP-3003-B, -492AAOO-A, Blank Detail for Class la; SP- 30
48、04-8, -492CA00, Blank Detail for Class IVa; and SP-2378-B, -492CAAA, Detail for class Va. In this particular case the objective for this Detail Specification is to be incorporated, in otal, into a Federal Standard for building wiring. All comments from the previous ballot have leen resolved. rhis background data form was prepared by: Other (name, address, phone/FAX: Indicated author 22 Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
