1、 TIA-455-240 September 2009 Fiber Optic Connector Endface Cleaning System Evaluation NOTICE TIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings between manufacturers and purchasers, facilitating interchangeability and improvement
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22、UT SUCH LIMITATIONS. TIA-455-240 i TIA 455-240 Fiber Optic Connector Endface Cleaning System Evaluation Table of Contents FOREWORD iii 1 INTRODUCTION . 1 1.1 Intent 1 1.2 Forms of Contamination 1 1.2.1 Oil 1 1.2.2 Solvent Residue 1 1.2.3 Mineral Deposits . 1 1.2.4 Dust . 1 2 Normative Documents 2 3
23、APPARATUS 2 3.1 Contamination Fabric . 2 3.2 Manual Video Microscopy . 2 3.3 Automated Analysis Microscopy 3 3.4 Calibration Artifact 3 4 SAMPLING AND SPECIMENS . 3 4.1 Sample . 3 4.2 Cleaning System Specimen 3 4.3 Connector Assembly Specimen . 3 5 PROCEDURES 4 5.1 Oil . 4 5.1.1 Initial Inspection .
24、 4 5.1.2 Oil Contamination Pad . 4 5.1.3 Endface Contamination 4 5.1.4 Cleaning . 5 5.1.5 Cleaning System Repeatability . 5 5.2 Mineral Deposits . 5 5.2.1 Initial Inspection . 5 5.2.2 Endface Contamination 5 5.2.3 Cleaning . 6 5.2.4 Cleaning System Repeatability . 6 5.3 Solvent Residue . 6 5.3.1 Ini
25、tial Inspection . 6 5.3.2 Endface Contamination 6 5.3.3 Cleaning . 7 5.3.4 Post-cleaning performance 7 5.4 Dust Contamination Pre Mating . 7 5.4.1 Initial Inspection . 7 5.4.2 Dust Contamination Pad 7 5.4.3 Endface Contamination 7 5.4.4 Cleaning . 8 5.4.5 Cleaning System Repeatability . 8 5.5 Dust C
26、ontamination Post Mating . 8 5.5.1 Initial Inspection . 8 5.5.2 Dust Contamination Pad 8 5.5.3 Endface Contamination 8 5.5.4 Connector Mating . 9 5.5.5 Cleaning . 9 5.5.6 Cleaning System Repeatability . 9 TIA-455-240 ii6 CALCULATIONS OR INTERPRETATION OF RESULTS 9 7 DOCUMENTATION 10 8 SPECIFICATION
27、INFORMATION 11 9 INFORMATIVE DOCUMENTS 11 ANNEX A (Informative) Additional Contaminants 12 ANNEX B (Informative): Cleaning System Guidelines 13 TIA-455-240 iii _ FOREWORD _ (This Foreword is not part of this Standard.) This document comes from TIA Project No. PN-3-0149 and was formulated under the c
28、ognizance of TIA TR-42.13 (Formerly, FO-4.3) Subcommittee on Fiber Optic Passive Optical Devices and Components. There are two annexes to this Standard. Annex A and B are informative and are not considered part of this Standard. TIA-455-240 ivThis page is left blankTIA-455-240 1 Fiber Optic Connecto
29、r Endface Cleaning System Evaluation _ 1 INTRODUCTION _ 1.1 Intent The intent of this document is to provide a standard means for evaluation of systems designed to remove contamination from fiber optic connector endfaces. This procedure is applicable to all single and multi-fiber connector types pop
30、ulated with any fiber type. Contamination trapped between mating optical connector endfaces can result in the following failure modes: Increase in attenuation Increase in return loss Permanent polished endface damage due to abrasion Permanent polished endface damage due to contamination response dur
31、ing higher power throughput applications It is beyond the scope of this document to define or specify cleaning systems. This document is applicable to both In-situ (bulkhead) and free connector cleaning systems. 1.2 Forms of Contamination This document addresses some of the most common forms of cont
32、amination observed in indoor and outdoor optical data transmission systems. 1.2.1 Oil Oil which typically is a result of direct contact with human skin is simulated by an all purpose vegetable oil extracted from corn, soybeans, peanuts, cottonseeds, safflower seeds, rape seeds and sunflower seeds. 1
33、.2.2 Solvent Residue Isopropyl alcohol is a commonly used cleaning fluid for optical connectors cleaning and is used to generate solvent residue on the connector endface. 1.2.3 Mineral Deposits A saturated solution of water and sodium chloride is used to generate a mineral deposit residue on the con
34、nector endface. 1.2.4 Dust Airborne particulate matter simulated by ISO Fine Test Dust 12103-1 A2 (Test dust for filter evaluation; Arizona Road Dust). Cleaning performance on particulate matter is evaluated with and without the connector specimens having been mated. TIA-455-240 2_ 2 Normative Docum
35、ents _ The following standards contain provisions which, through reference in this text, constitute provisions of this Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this Standard are encouraged to in
36、vestigate 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. EIA/TIA-455-A “Standard Test Procedure for Fiber Optic Fibers, Cables, Transducers, Sensors, Connecting and Termin
37、ating Devices, and Other Fiber Optic Components” EIA/TIA-440-A “Fiber Optic Terminology” IEC 61300-3-35 Examinations and measurements Fibre optic cylindrical connector endface visual and automated inspection. _ 3 APPARATUS _ 3.1 Contamination fabric Swabs or fabric which will not introduce uncontrol
38、led contaminants into the system are used to apply vegetable oil, alcohol, NaCL solution and Arizona Road Dust, to clean connector endfaces. The fabric must be able to contact a pristine connector endface without causing damage. Foam materials should not be used to introduce contaminants. 3.2 Manual
39、 Video Microscopy (as required by the Detail Specification) A light microscope in which a lens system forms an image on a sensor that, in turn, transfers the image to a display. It shall have the following features and capabilities: Suitable ferrule or connector adapter Light source Focusing mechani
40、sm A means to measure defects observed in the image (e.g., transparent templates scaled to the image size on the display) A means for acquiring a digital image Minimum total magnification offering a field of view of at least 250 microns TIA-455-240 3 3.3 Automated Analysis Microscopy (as required by
41、 the Detail Specification) A light microscope in which a digital image is acquired or created and subsequently analyzed via an algorithmic process. It shall have the following features and capabilities: Suitable ferrule or connector adapter A means for acquiring a digital image Algorithmic analysis
42、of the digital image A means to compare the analyzed image to programmable acceptance criteria in such a manner that a result of “pass” or “fail” is provided Minimum total magnification offering a field of view of at least 250 microns 3.4 Calibration Artifact A low resolution calibration artifact as
43、 defined in IEC 61300-3-35 or by the equipment manufacturer. _ 4 SAMPLING AND SPECIMENS _ 4.1 Sample The sample cleaning system to be tested shall be selected at random from the lot of cleaning systems presented for evaluation unless specified otherwise in the Detail Specification. 4.2 Cleaning Syst
44、em Specimen The device to be tested shall be the complete cleaning system as defined by the manufacturer. 4.3 Connector Assembly Specimen The connector used to evaluate the cleaning system shall be terminated to the applicable fiber type. The opposite end of the cable may be left unterminated (pigta
45、il) or can be terminated (patch cord). However, the cable assembly must be configured for use with the applicable microscope and optical test equipment. TIA-455-240 4_ 5 PROCEDURES _ Notes 1. Care must be taken to ensure that the microscopes and test equipment used for this procedure do not become a
46、 contaminated throughout the process. Examination of equipment for contamination is recommended prior to each inspection cycle. 2. Care must be taken to ensure that the reference assemblies used are completely free of debris and will not serve as a potential source of contamination. 3. The reference
47、 connector used for performance measurements should be free of removable contamination as defined in the detail specification. 4. The microscope should be calibrated as defined in IEC 61300-3-35 or by the equipment manufacturer. 5.1 Oil 5.1.1 Initial inspection Prepare a clean, polished connector end
