IEC 61300-3-35:2022 is concerned with the observation and classification of debris, scratches and defects. The inspection requirements are based on IEC TR 62627-05. Advice for cleaning of contamination from fibres\/ferrule is found in IEC TR 62627-01 and a recommendation is given in Annex D. IEC TR 62572-4 provides the cleaning method for a stub for optical transceivers. Visual inspection is in addition to, and does not replace measurement of performance parameters such as attenuation and return loss, or end face parameters. The dimensions specified are chosen such that they can be easily estimated. Not only the zones A and B on the fibre are inspected for defects and scratches but the whole contact area (where the two fibres\/ferrules meet when mated) needs to be inspected for contamination (this is up to 250 \u00b5m diameter for cylindrical ferrules and the whole ferrule surface for rectangular ferrules).The objectives of this document are the following: – specify the minimum criteria for a microscope to be compliant to this document; – specify the procedure and criteria for inspecting fibre-optic end faces for cleanliness to determine if the end faces are fit for use. All connector optical interfaces (IEC 61755 series and IEC 63267 series) are based on physical contact between fibre cores; – provide quantitative criteria for the analysis of end face images. This third edition cancels and replaces the second edition published in 2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: – adding of a statement that visual inspection is not a substitute for optical qualification such as attenuation and return loss measurement; – adding of some terms and definitions; – adding requirements for SM 35 dB connectors; – adding of a sentence in Clause 5 concerning the susceptibility of the methods to system variability and variability within systems from same supplier; – removal of inspection requirements for zones C and D; – insertion of a generic cleanliness specification for whole rectangular ferrule and 250 \u00b5m area around every fibre; – adding a cleaning recommendation for rectangular and cylindrical ferrules; – outer edge of inspection zone B has changed from 115 \u00b5m to 110 \u00b5m to meet manufacturing tolerances of fixture for microscopes; – change that defects that are partly in core are only to be judged for the part they are in the core. The remainder of the defect is considered to be located in the cladding. – adding a statement that a connector cannot be rejected by just failing visual inspection. Meeting the specified optical performance determines the use of this connector.<\/p>\n
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| 2<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | Annex ZA (normative)Normative references to international publicationswith their corresponding European publications <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | English CONTENTS <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 1 Scope 2 Normative references 3 Terms, definitions and abbreviated terms 3.1 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 3.2 Abbreviated terms 4 Apparatus 4.1 General <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 4.2 Method A: Direct view optical microscopy 4.3 Method B: Video microscopy <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 4.4 Method C: Automated analysis microscopy 4.5 Requirements of validation 4.6 Minimum requirements for standard field of view microscope 4.7 Minimum requirements for large field of view microscope 5 Inspection procedure <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | Figures Figure 1 \u2013 Flowchart of inspection procedure <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Annex A (normative) Visual requirements for connector end faces A.1 Requirements A.2 Visual inspection requirements for multimode PC and APC polished connectors Tables Table A.1 \u2013 Visual requirements for multimode PC and APC polished connectors <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | A.3 Visual requirements for single-mode PC polished connectors, RL \u2265 26 dB, and single-mode transceivers using a fibre-stub interface A.4 Visual requirements for single-mode PC polished connectors, RL \u2265 35 dB Table A.2 \u2013 Visual requirements for single-mode PC polished connectors,RL \u2265 26 dB, and single-mode transceivers using a fibre-stub interface Table A.3 \u2013 Visual requirements for single-mode PC polished connectors, RL \u2265 35 dB <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | A.5 Visual requirements for single-mode PC polished connectors, RL \u2265 45 dB A.6 Visual requirements for single-mode angle polished (APC) connectors Table A.4 \u2013 Visual requirements for single-mode PC polished connectors, RL \u2265 45 dB Table A.5 \u2013 Visual requirements for single-mode angle polished (APC) connectors <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | Annex B (informative) Examples of defects and scratches Figure B.2 \u2013 Example 2 of defects and scratches Figure B.1 \u2013 Example 1 of defects and scratches <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | Annex C (normative) Validation procedure C.1 Validation artefact C.2 Validation procedure <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | Annex D (informative) Recommended cleaning method D.1 Inspection procedure for cleanliness D.2 Cleaning procedure rectangular ferrules (on cable) Figure D.1 \u2013 Flowchart of dry only cleaning\/inspection sequence Figure D.2 \u2013 Flowchart of dry-wet cleaning\/inspection sequence <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | Figure D.3 \u2013 Dry cleaning of connector on cable <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | D.3 Cleaning procedure for cylindrical ferrules Figure D.4 \u2013 Moisten the tape Figure D.5 \u2013 Wiping action Figure D.6 \u2013 cleaning of cylindrical ferrule <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | D.4 Cleaning procedure for adaptor and receptacle of rectangular ferrules Figure D.7 \u2013 Moisten the tape Figure D.8 \u2013 2 Strokes on wet tape Figure D.9 \u2013 Insert click cleaner Figure D.10 \u2013 Clean pins Figure D.11 \u2013 Rotate stick <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | Annex E (informative) Examples of large field of view images Figure E.1 \u2013 Example of typical contaminations Figure E.2 \u2013 Example of typical contaminations <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | Figure E.3 \u2013 Example of typical contaminations Figure E.4 \u2013 Example of typical contaminations <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Fibre optic interconnecting devices and passive components. Basic test and measurement procedures – Examinations and measurements. Visual inspection of fibre optic connectors and fibre-stub transceivers<\/b><\/p>\n |