{"id":247076,"date":"2024-10-19T16:15:30","date_gmt":"2024-10-19T16:15:30","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-61280-4-12009\/"},"modified":"2024-10-25T11:20:34","modified_gmt":"2024-10-25T11:20:34","slug":"bs-en-61280-4-12009","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-61280-4-12009\/","title":{"rendered":"BS EN 61280-4-1:2009"},"content":{"rendered":"

This part of IEC 61280-4 is applicable to the measurement of attenuation of installed fibreoptic cabling using multimode fibre, typically in lengths of up to 2 000 m. This cabling can include multimode fibres, connectors, adapters and splices.<\/p>\n

Cabling design standards such as ISO\/IEC 11801, ISO\/IEC 24702 and ISO\/IEC 24764 contain specifications for this type of cabling. ISO\/IEC 14763-3, which supports these design standards, makes reference to the test methods of this standard.<\/p>\n

In this standard, the fibre types that are addressed include category A1a (50\/125 \u03bcm) and A1b (62,5\/125 \u03bcm) multimode fibres, as specified in IEC 60793-2-10. The attenuation measurements of the other multimode categories can be made, using the approaches of this standard, but the source conditions for the other categories have not been defined.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
6<\/td>\nCONTENTS <\/td>\n<\/tr>\n
9<\/td>\n1 Scope
2 Normative references <\/td>\n<\/tr>\n
10<\/td>\n3 Terms, definitions, graphical symbols and acronyms
3.1 Terms and definitions <\/td>\n<\/tr>\n
11<\/td>\n3.2 Graphical symbols <\/td>\n<\/tr>\n
12<\/td>\nFigures
Figure 1a \u2013 Socket and plug assembly
Figure 1b \u2013 Connector set (plug, adapter, plug)
Figure 1c \u2013 Light source
Figure 1d \u2013 Power meter
Figure 1 \u2013 Connector symbols
Figure 2 \u2013 Symbol for cabling under test <\/td>\n<\/tr>\n
13<\/td>\n3.3 Acronyms
4 Measurement methods
4.1 General <\/td>\n<\/tr>\n
14<\/td>\n4.2 Cabling configurations and applicable test methods
4.3 Overview of uncertainties
Tables
Table 1 \u2013 Cabling configurations
Table 2 \u2013 Test methods and configurations <\/td>\n<\/tr>\n
16<\/td>\n5 Apparatus
5.1 General
5.2 Light source
Table 3 \u2013 Spectral requirements <\/td>\n<\/tr>\n
17<\/td>\n5.3 Receive or tail cord
5.4 Substitution\/dummy cord
5.5 Power meter \u2013 LSPM methods only
5.6 OTDR apparatus <\/td>\n<\/tr>\n
18<\/td>\n5.7 Connector end-face cleaning and inspection equipment
5.8 Adapters
6 Procedures
6.1 General
Figure 3 \u2013 OTDR schematic <\/td>\n<\/tr>\n
19<\/td>\n6.2 Common procedures
6.3 Calibration
6.4 Safety
7 Calculations <\/td>\n<\/tr>\n
20<\/td>\n8 Documentation
8.1 Information for each test
8.2 Information to be available <\/td>\n<\/tr>\n
21<\/td>\nAnnex A (normative) One-cord reference method <\/td>\n<\/tr>\n
22<\/td>\nFigure A.1 \u2013 Reference measurement
Figure A.2 \u2013 Test measurement <\/td>\n<\/tr>\n
23<\/td>\nAnnex B (normative) Three-cord reference method <\/td>\n<\/tr>\n
24<\/td>\nFigure B.1 \u2013 Reference measurement
Figure B.2 \u2013 Test measurement <\/td>\n<\/tr>\n
25<\/td>\nAnnex C (normative) Two-cord reference method <\/td>\n<\/tr>\n
26<\/td>\nFigure C.1 \u2013 Reference measurement
Figure C.2 \u2013 Test measurement
Figure C.3 \u2013 Test measurement for plug-socket style connectors <\/td>\n<\/tr>\n
28<\/td>\nAnnex D (normative) Optical time domain reflectometer <\/td>\n<\/tr>\n
29<\/td>\nFigure D.1 \u2013 Test measurement for Method D <\/td>\n<\/tr>\n
30<\/td>\nFigure D.2 \u2013 Location of the cabling under test ports <\/td>\n<\/tr>\n
31<\/td>\nFigure D.3 \u2013 Graphic construction of F1 and F2 <\/td>\n<\/tr>\n
32<\/td>\nFigure D.4 \u2013 Graphic construction of F1, F11, F12 and F2 <\/td>\n<\/tr>\n
34<\/td>\nAnnex E (normative) Requirements for the source characteristics for multimode measurement <\/td>\n<\/tr>\n
35<\/td>\nFigure E.1 \u2013 Encircled flux template example
Table E.1 \u2013 Threshold tolerance <\/td>\n<\/tr>\n
36<\/td>\nTable E.2 \u2013 EF requirements for 50 um core fibre cabling at 850 nm
Table E.3 \u2013 EF requirements for 50 um core fibre cabling at 1 300 nm
Table E.4 \u2013 EF requirements for 62,5 um core fibre cabling at 850 nm
Table E.5 \u2013 EF requirements for 62,5 um core fibre cabling at 1 300 nm <\/td>\n<\/tr>\n
37<\/td>\nAnnex F (informative) Measurement uncertainty examples
Table F.1 \u2013 Expected loss for examples (Note 1) <\/td>\n<\/tr>\n
39<\/td>\nFigure F.1 \u2013 Initial power measurement <\/td>\n<\/tr>\n
40<\/td>\nFigure F.2 \u2013 Verification of reference grade connection
Figure F.3 \u2013 Two offset splices
Figure F.4 \u2013 Five offset splices <\/td>\n<\/tr>\n
42<\/td>\nFigure F.5 \u2013 EF centred
Figure F.6 \u2013 EF underfilling <\/td>\n<\/tr>\n
43<\/td>\nFigure F.7 \u2013 EF overfilling
Figure F.8 \u2013 L1 loss with mandrel <\/td>\n<\/tr>\n
44<\/td>\nFigure F.9 \u2013 L1 loss with mandrel and mode conditioner
Figure F.10 \u2013 L2 loss (adjusted) with mandrel
Figure F.11 \u2013 L2 loss (adjusted) with mandrel and mode conditioning <\/td>\n<\/tr>\n
45<\/td>\nFigure F.12 \u2013 L3 loss (adjusted) with mandrel
Figure F.13 \u2013 L3 loss (adjusted) with mandrel and mode conditioning <\/td>\n<\/tr>\n
46<\/td>\nAnnex G (informative) OTDR configuration information <\/td>\n<\/tr>\n
48<\/td>\n Table G.1 \u2013 Default effective group index of refraction values <\/td>\n<\/tr>\n
49<\/td>\nFigure G.1 \u2013 Splice and macro bend attenuation measurement <\/td>\n<\/tr>\n
50<\/td>\nFigure G.2 \u2013 Attenuation measurement with high reflection connectors <\/td>\n<\/tr>\n
51<\/td>\nFigure G.3 \u2013 Attenuation measurement of a short length cabling <\/td>\n<\/tr>\n
52<\/td>\nFigure G.4 \u2013 OTDR trace with ghost <\/td>\n<\/tr>\n
53<\/td>\nFigure G.5 \u2013 Cursors positioning <\/td>\n<\/tr>\n
55<\/td>\nAnnex H (informative) Test cord insertion loss verification <\/td>\n<\/tr>\n
56<\/td>\nFigure H.1 \u2013 Obtaining reference power level P0 <\/td>\n<\/tr>\n
57<\/td>\nFigure H.2 \u2013 Obtaining power level P1 <\/td>\n<\/tr>\n
58<\/td>\nFigure H.3 \u2013 Obtaining reference power level P0
Figure H.4 \u2013 Obtaining power level P1 <\/td>\n<\/tr>\n
59<\/td>\nFigure H.5 \u2013 Obtaining reference power level P0
Figure H.6 \u2013 Obtaining power level <\/td>\n<\/tr>\n
60<\/td>\nFigure H.7 \u2013 Obtaining reference power level P0
Figure H.8 \u2013 Obtaining power level P1
Figure H.9 \u2013 Obtaining power level P5 <\/td>\n<\/tr>\n
61<\/td>\nFigure H.10 \u2013 Obtaining reference power level P0
Figure H.11 \u2013 Obtaining power level P1 <\/td>\n<\/tr>\n
63<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Fibre optic communication subsystem test procedures – Installed cable plant. Multimode attenuation measurement<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2010<\/td>\n66<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":247080,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[648,2641],"product_tag":[],"class_list":{"0":"post-247076","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-33-180-01","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/247076","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/247080"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=247076"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=247076"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=247076"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}