1、 TIA/EIA ANSI/TIA/EIA-455-72-1997 Approved: July 30, 1997 Reaffirmed: December 21, 2001 STANDARD FOTP-72 Procedure for Assessing Temperature and Humidity Cycling Exposure Effects on Optical Characteristics of Optical Fibers TIAIEIA-455-72 1 OCTOBER 1997 TELECOMMUNICATIONS INDUSTRY ASSOCIATION The Te
2、leconmiunications Industry Association represents 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/EIA Engineering Standards and Publications are
3、designed to serve the public interest through 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 his particular need. Existen
4、ce of such Standards and Publications shall not in any respect preclude any member or nonmember of TIA/EIA from manufacturing or selling products not conforming to such Standards and Publications, nor shall the existence of such Standards and Publications preclude their voluntary use by those other
5、than TIA/EIA members, whether the standard is to be used either domestically or internationally. Standards and Publications are adopted by TIA/EIA in accordance with the American National Standards Institute (ANSI) patent policy. By such action, TIA/EIA does not assume any liability to any patent ow
6、ner, nor does it assume any obligation whatever to parties adopting the Standard or Publication. This Standard does not purport to address all safety problems associated with its use or all applicable regulatory requirements. It is the responsibility of the user of this Standard to establish appropr
7、iate safety and health practices and to determine the applicability of regulatory limitations before its use. (From Standards Proposal No. 3-2817-RF1, formulated under the cognizance of the TIA FO-6.6 Subcommittee on Optical Fibers.) This Document was reaffirmed by the American National Standards In
8、stitute (ANSI) on December 2 1,200 1, and by the TIA. Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION 1997 Standards and Technology Department 2500 Wilson Boulevard Arlington, VA 22201 U.S.A. PRICE: Please refer to current Catalog of EIA ELECTRONIC INDUSTRIES ALLIANCE STANDARDS and ENGINEERING
9、PUBLICATIONS or call Global Engineering Documents, USA and Canada (1 -800-854-7 179) International (303-397-7956) All rights reserved Printed in U.S.A. Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license
10、 from IHS-,-,-Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NOTICE OF DISCLAIMER AND LIMITATION OF LIABILITY The document to which this Notice is affixed has been prepared by one or mo
11、re Engineering Committees of the Telecommunications Industry Association (“TIA”). TIA is not the author of the document contents, but publishes and claims copyright to the document pursuant to licenses and permission granted by the authors of the contents. TIA Engineering Committees are expected to
12、conduct their affairs in accordance with the TIA Engineering Manual (“Manual”), the current and predecessor versions of which are available at http:/www.tiaonline.orZr/standards/sfZr/engineering manual.ch. TIAS function is to administer the process, but not the content, of document preparation in ac
13、cordance with the Manual and, when appropriate, the policies and procedures of the American National Standards Institute (“ANSI”). THE USE OR PRACTICE OF CONTENTS OF THIS DOCUMENT MAY INVOLVE THE USE OF INTELLECTUAL PROPERTY RIGHTS (“IPR), INCLUDING PENDING OR ISSUED PATENTS, OR COPYRIGHTS, OWNED BY
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18、SS OF PROFITS, LITIGATION, OR THE LIKE), WHETHER BASED UPON BREACH OF CONTRACT, BREACH OF WARRANTY, TORT (INCLUDING NEGLIGENCE), PRODUCT LIABILITY OR OTHERWISE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. THE FOREGOING NEGATION OF DAMAGES IS A FUNDAMENTAL ELEMENT OF THE USE OF THE CONTENTS H
19、EREOF, AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I N l- I v) v) d I 1 TIMIA-455-72 4 W STD-EIA TIA-455-72
20、-ENGL 1997 D 3234b00 0571bL7 77 ANSI/TIA/EIA-455-72-1997 Approved: July 30, 1997 TIMIA STANDARD FOTP-72 Procedure for Assessing Temperature and Humidity Cycling Exposure Effects on Optical Characteristics of Optical Fibers OCTOBER 1997 TELECOMMUNICATIONS INDUSTRY ASSOCIATION Copyright Electronic Ind
21、ustries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-STD-EIA TIA-V55-72-ENGL 1997 3234bOO 0591bLB 705 9 NOTICE 4 MIA Engineering Standards and Publications are designed to serve the public interest through elimllisl
22、ting misunderstandings between manufhcturers and purchasers, fhcilitathg interchangeabii and improvement of products, and assisting the purchaser in selecting and obtaining with minimum delay the proper product for his particular need. Existence of such Standards and Publications shall not in atiy r
23、espect preclude any member or nonmesnber of TIAELA the fiber specimens are not expected to remain usable after completion of the test. 1 Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-S
24、TDmEIA TIA-455-72-ENGL 1777 3239b00 0591b22 L3b b TINEIA-455-72 Warning: Care should be taken when handling small-diameter fiber to prevent it from puncturing the skin, especially in the eye area. Direct viewing of the end of an optical fiber or of an unterminated optical fiber component port is not
25、 recommended when it is propagating energy unless prior assurance has been obtained that the energy output level is safe. _ - 2 Normative References Test or inspection requirements may include, but are not limited to, the following references: EIAlTIA-455-A FOTP-20 FOTP-46 FOTP-53 FOTP-57 FOTP-59 (T
26、INE IA45 5-2 OA) (TINEIA-455-46A) (TINE IA-455-53A) (TINE IA-455-57B)2) (TlNEIA-455-59A) Standard test procedures for fiber optic fibersy cables, transducers, sensors, connecting and terminating devices, and other fiber optic components (August 7 99 7) Measurement of change in optical transmiffance
27、Spectral attenuation measurements for long-lengthy graded index optical fibers (Ocfober 7990) Attenuation by substitution measurement for multimode graded index optical fibers or fiber assemblies used in long-length communications systems (September 7990) Optical fiber end preparation and examinatio
28、n Measurement of fiber point discontinuities using an OTDR In process of preparation. Pending publication of this revision, use TIAiEIA-455-20. 2, In process of preparation. Pending publication of this revision, use TIAiEIA-455-57A. In process of preparation. Pending publication of this revision, us
29、e TINEIAQ55-59. 2 Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TINEIA-455-72 FOTP-61 (TIA/EIA-455-61A)4) OTDR measurement of fiber or cable attenuafion FOTP-78 (TINEIA-455-78A) Spectr
30、al attenuation cutback measurement for single- mode optical fibers (May 7990) Users of this FOTP are encouraged to specify the most recent edition of the FOTPs referenced above. In case of dispute, use the specified document revision. Caution: Do not make casually the decision to require the most re
31、cent edition of a referenced FOTP. There have been instances when document revisions have completely changed the intent, application, use, etc. of a document such that the requirement to use an edition more recent than the one originally reviewed may be totally inappropriate. 3 Apparatus 3.1 Test ch
32、amber Use an environmental chamber whose operational range covers the temperature and humidity ranges and rates of change specified by this document or by the Detail Specification. Unless otherwise specified in the Detail Specification, the chamber shall maintain any specified temperature to within
33、I2 OC (I4 OF) and any specified relative humidity (RH) to within 15% RH throughout the test duration. Unless otherwise specified, the chamber shall have the capacity to change the internal temperature at a rate of at least 25 “C (45 OF) per hour. The inside dimensions of the chamber shall be suffici
34、ent to accommodate the specimens with a free flow of air around them and to maintain the specified test conditions. The heat source shall be located so that radiant heat will not fall directly on the specimens. When possible, the chamber shall maintain the high-humidity environments required in 5.2.
35、7 without Condensation; alternatively, provision shall be made to position or protect the specimens to prevent condensation from dripping onto them during the test. If the applicable Detail Specification specifies in-situ optical measurement of the specimens, the chamber shall provide an access port
36、 4) In process of preparation. Pending publication of this revision, use TINEIA-455-61. 3 Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TINEIA-455-72 or ports through which both ends o
37、f the specimens may extend. These ports shall have provision for sealing around any specimens that extend out of the chamber in such a way that the specified test conditions can be maintained. It may be desirable to have a window in the door to observe the specimens during the test. If necessary bec
38、ause of the limitations of this test chamber, a separate chamber may be used for the portion of the test cycle that runs below room temperature. This chamber shall be capable of maintaining to within I2 OC (k4 OF) the lowest internal temperature required by the specified exposure schedule selected i
39、n 5.2.7, or as otherwise specified by the Detail Specification. Unless otherwise specified, this chamber shall have the capacity to change the internal temperature at a rate of at least 20 OC (36 OF) per hour. While in this chamber, the specimens shall also be protected from direct radiant heat and
40、from condensation. Provision shall be made to transfer the specimens between the chambers within 15 minutes maximum, only when both chambers are at room ambient conditions, and with no direct handling of the specimens themselves. The cycle timing shall include only those times when the chambers are
41、at the specified temperatures and humidities; the transfer time shall not be included in the cycle time. If a second chamber is used, no in-situ measurements shall be attempted (in order to minimize handling and potential damage to the specimens), and specific information to that effect shall be rep
42、orted with the results. 3.2 Temperature recording device Use a temperature recording device to provide a record of the temperature throughout the test. Unless otherwise specified, the recorder and the sensor shall have a combined accuracy of within I2 “C (14 OF). The sensor shall be positioned to me
43、asure accurately the temperature experienced by the specimens. It may be desirable to use multiple sensors and a multi-channel recorder so that temperatures measured at several locations around the specimens can be recorded. 3.3 Relative humidity determination Determine relative humidity (RH) using
44、the dry bulb-wet bulb thermometer coi;nparison or an equivalent method. Unless otherwise specified, the RH measurements shall be accurate to within the equivalent of *I “C (I2 OF) for the dry bulb-wet bulb method. The use of a recording device may be desirable to permit correlation between changes o
45、f state and events that occur during the test. When the wet bulb control method is used, clean the wet bulb thermocouple and replace the sock every 30 days or at the start of each test, whichever is greater. Ensure an adequate water supply for the longest test duration anticipated. 4 Copyright Elect
46、ronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,- STDmEIA TIA-455-72-ENGL 1777 3234b00 0591b25 7Y5 m TINElA-455-72 3.4 Test and measurement equipment Unless otherwise specified in the Detail Specificati
47、on, either optical transmittance measurements or direct attenuation measurements shall be acceptable. All test equipment and accessories required by the appropriate FOTP shall be available. The term “optical test” in this document shall refer to any of the referenced test procedures. 3.4.1 Perform o
48、ptical transmittance or direct attenuation measurements at the wavelengths specified in the Detail Specification. Unless otherwise specified, make measurements at the following wavelengths: single-mode fiber: 1310 or 1550 nm or both multimode fiber: 850 or 1300 nm or both 3.4.2 Perform optical trans
49、mittance measurements in accordance with FOTP-20. 3.4.3 Make direct optical attenuation measurements in accordance with FOTP-46, FOTP-53, FOTP-61, or FOTP-78, as specified in the Detail Specification. If specified, make point discontinuity measurements in accordance with FOTP-59. Only measurements made in accordance with FOTP-46, FOTP-61, or FOTP-78 are acceptable for U.S. military applications. 4 S
