Fibre-optic communication subsystem test procedures - Part 4-5: Installed cabling plant - Attenuation measurement of MPO terminated fibre optic cabling plant using test equipment with MPO interfaces (IEC 61280-4-5:2020)

This part of IEC 61280 is applicable to the measurement of attenuation and determination of
polarity and length of installed multimode and single-mode optical fibre cabling plant, terminated
with MPO connectors, using test equipment having an MPO interface. This cabling plant can
include multimode or single-mode optical fibres, connectors, adapters, splices, and other
passive devices. The cabling can be installed in a variety of environments including residential,
commercial, industrial, and data centre premises, as well as outside plant environments.
In this document, the optical fibres that are addressed include sub-categories A1-OMx, where
x = 2, 3, 4 and 5 (50/125 μm) multimode optical fibres, as specified in IEC 60793-2-10, and
category B-652 and B-657 (9/125 μm) single-mode optical fibres, as specified in
IEC 60793-2-50. The attenuation measurements of the other multimode and single-mode
categories can also be made using a light source and power meter (LSPM) or optical time
domain reflectometer (OTDR) utilising an internal or external optical switch having one MPO
interface. Multimode measurements are made with an 850 nm source because transceivers
used for parallel optics applications having an MPO interface only operate at 850 nm; 1 300 nm
measurements are optional. Single-mode measurements are made with a 1 310 nm and/or
1 550 nm source because transceivers used for parallel optics applications having an MPO
interface operate at these wavelengths. This document does not include descriptions of cabling
that is not exclusively MPO to MPO.

Prüfverfahren für Lichtwellenleiter-Kommunikationsuntersysteme - Teil 4-5: Installierte Kabelanlagen - Dämpfungsmessung an Lichtwellenleiter-Kabelanlagen mit MPO-Abschlüssen mittels Prüfeinrichtungen mit MPO-Steckgesichtern (IEC 61280-4-5:2020)

Procédures d'essai des sous-systèmes de télécommunication fibroniques - Partie 4-5: Installation câblée - Mesure de l'affaiblissement de l’installation câblée fibronique à terminaisons MPO utilisant un équipement d’essai avec interfaces MPO (IEC 61280-4-5:2020)

IEC 61280-4-5:2020 s'applique au mesurage de l'affaiblissement et à la détermination de la polarité et de la longueur d’une installation câblée à fibres optiques multimodales et unimodales, avec terminaisons par connecteurs MPO, utilisant un équipement d’essai à interface MPO. Cette installation câblée peut inclure des fibres optiques multimodales ou unimodales, des connecteurs, des adaptateurs, des épissures et d'autres dispositifs passifs. Le câblage peut être installé dans différents environnements, y compris des locaux résidentiels, commerciaux ou industriels et des centres de traitement de données, ainsi que dans des environnements d'installations extérieures.Les fibres optiques traitées dans le présent document comprennent les fibres optiques multimodales des sous-catégories A1-OMx, où x = 2, 3, 4 et 5 (50/125 μm), telles que spécifiées dans l’IEC 60793-2-10, et les fibres optiques unimodales des catégories B‑652 et B‑657 (9/125 μm), telles que spécifiées dans l'IEC 60793-2-50. Les mesurages de l’affaiblissement des autres catégories multimodales et unimodales peuvent également être effectués en utilisant une source lumineuse et un mesureur de puissance (MPSL) ou un réflectomètre optique dans le domaine temporel (OTDR – optical time domain reflectometer) avec commutateur optique interne ou externe à interface MPO. Les mesurages des catégories multimodales sont effectués avec une source lumineuse de 850 nm étant donné que les émetteurs-récepteurs utilisés pour les applications optiques parallèles à interface MPO fonctionnent uniquement avec une source lumineuse de 850 nm. Les mesurages avec une source lumineuse de 1 300 nm sont facultatifs. Les mesurages des catégories unimodales sont effectués avec une source lumineuse de 1 310 nm et/ou 1 550 nm étant donné que les émetteurs-récepteurs utilisés pour les applications optiques parallèles à interface MPO fonctionnent à ces longueurs d’onde. Le présent document ne comprend pas les descriptions du câblage qui n’utilise pas exclusivement une interface MPO/MPO.

Postopki preskušanja optičnega komunikacijskega podsistema - 4-5. del: Vgrajene žične oblike - Izvedba atenuacije merilne naprave z optičnimi kabli, ki se konča z MPO, z uporabo preskusne opreme z vmesniki MPO (IEC 61280-4-5:2020)

General Information

Status
Published
Publication Date
21-Sep-2020
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
21-Sep-2020
Due Date
26-Nov-2020
Completion Date
22-Sep-2020

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SLOVENSKI STANDARD
SIST EN IEC 61280-4-5:2020
01-november-2020
Postopki preskušanja optičnega komunikacijskega podsistema - 4-5. del: Vgrajene

žične oblike - Izvedba atenuacije merilne naprave z optičnimi kabli, ki se konča z

MPO, z uporabo preskusne opreme z vmesniki MPO (IEC 61280-4-5:2020)

Fibre-optic communication subsystem test procedures - Part 4-5: Installed cabling plant -

Attenuation measurement of MPO terminated fibre optic cabling plant using test
equipment with MPO interfaces (IEC 61280-4-5:2020)

Prüfverfahren für Lichtwellenleiter-Kommunikationsuntersysteme - Teil 4-5: Installierte

Kabelanlagen - Dämpfungsmessung an Lichtwellenleiter-Kabelanlagen mit MPO-

Abschlüssen mittels Prüfeinrichtungen mit MPO-Steckgesichtern (IEC 61280-4-5:2020)

Procédures d'essai des sous-systèmes de télécommunication fibroniques - Partie 4-5:

Installation câblée - Mesure de l'affaiblissement de l’installation câblée fibronique à

terminaisons MPO utilisant un équipement d’essai avec interfaces MPO (IEC 61280-4-

5:2020)
Ta slovenski standard je istoveten z: EN IEC 61280-4-5:2020
ICS:
33.180.01 Sistemi z optičnimi vlakni na Fibre optic systems in
splošno general
SIST EN IEC 61280-4-5:2020 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 61280-4-5:2020
---------------------- Page: 2 ----------------------
SIST EN IEC 61280-4-5:2020
EUROPEAN STANDARD EN IEC 61280-4-5
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2020
ICS 33.180.01
English Version
Fibre-optic communication subsystem test procedures - Part 4-5:
Installed cabling plant - Attenuation measurement of MPO
terminated fibre optic cabling plant using test equipment with
MPO interfaces
(IEC 61280-4-5:2020)
Procédures d'essai des sous-systèmes de Prüfverfahren für Lichtwellenleiter-

télécommunication fibroniques - Partie 4-5: Installation Kommunikationsuntersysteme - Teil 4-5: Installierte

câblée - Mesure de l'affaiblissement de l’installation câblée Kabelanlagen - Dämpfungsmessung an Lichtwellenleiter-

fibronique à terminaisons MPO utilisant un équipement Kabelanlagen mit MPO-Abschlüssen mittels

d’essai avec interfaces MPO Prüfeinrichtungen mit MPO-Steckgesichtern
(IEC 61280-4-5:2020) (IEC 61280-4-5:2020)

This European Standard was approved by CENELEC on 2020-08-26. CENELEC members are bound to comply with the CEN/CENELEC

Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC

Management Centre or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation

under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 61280-4-5:2020 E
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SIST EN IEC 61280-4-5:2020
EN IEC 61280-4-5:2020 (E)
European foreword

The text of document 86C/1669/FDIS, future edition 1 of IEC 61280-4-5, prepared by SC 86C "Fibre

optic systems and active devices" of IEC/TC 86 "Fibre optics" was submitted to the IEC-CENELEC

parallel vote and approved by CENELEC as EN IEC 61280-4-5:2020.
The following dates are fixed:

• latest date by which the document has to be implemented at national (dop) 2021-05-26

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2023-08-26

document have to be withdrawn

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice

The text of the International Standard IEC 61280-4-5:2020 was approved by CENELEC as a

European Standard without any modification.

In the official version, for Bibliography, the following notes have to be added for the standards

indicated:
IEC 60793-1-40 NOTE Harmonized as EN IEC 60793-1-40
IEC 60793-2 NOTE Harmonized as EN 60793-2
IEC 60793-2-10 NOTE Harmonized as EN IEC 60793-2-10
IEC 60793-2-50 NOTE Harmonized as EN IEC 60793-2-50
IEC 60876-1:2014 NOTE Harmonized as EN 60876-1:2014 (not modified)
IEC 61280-4-2 NOTE Harmonized as EN 61280-4-2
IEC 61300-3-6 NOTE Harmonized as EN 61300-3-6
IEC 61300-3-45 NOTE Harmonized as EN 61300-3-45
IEC 61745 NOTE Harmonized as EN 61745
IEC 61754-7 (series) NOTE Harmonized as EN IEC 61754-7 (series)
IEC 61755-3-31 NOTE Harmonized as EN 61755-3-31
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SIST EN IEC 61280-4-5:2020
EN IEC 61280-4-5:2020 (E)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments)

applies.

NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod),

the relevant EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available

here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60825 series Safety of laser products EN 60825 series
IEC 61280-1-3 - Fibre optic communication subsystem test EN 61280-1-3 -
procedures - Part 1-3: General
communication subsystems - Central
wavelength and spectral width
measurement

IEC 61280-4-1 2019 Fibre-optic communication subsystem test EN IEC 61280-4-1 2019

procedures - Part 4-1: Installed cabling
plant - Multimode attenuation
measurement
IEC 61300-3-35 - Fibre optic interconnecting devices and EN 61300-3-35 -
passive components - Basic test and
measurement procedures - Part 3-35:
Examinations and measurements - Visual
inspection of fibre optic connectors and
fibre-stub transceivers
IEC 61315 - Calibration of fibre-optic power meters EN IEC 61315 -
IEC 61746-1 - Calibration of optical time-domain EN 61746-1 -
reflectometers (OTDR) - Part 1: OTDR for
single mode fibres
IEC 61746-2 - Calibration of optical time-domain EN 61746-2 -
reflectometers (OTDR) - Part 2: OTDR for
multimode fibres
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SIST EN IEC 61280-4-5:2020
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SIST EN IEC 61280-4-5:2020
IEC 61280-4-5
Edition 1.0 2020-07
INTERNATIONAL
STANDARD
colour
inside
Fibre-optic communication subsystem test procedures –
Part 4-5: Installed cabling plant – Attenuation measurement of MPO terminated
fibre optic cabling plant using test equipment with MPO interfaces
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.01 ISBN 978-2-8322-8670-8

Warning! Make sure that you obtained this publication from an authorized distributor.

® Registered trademark of the International Electrotechnical Commission
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SIST EN IEC 61280-4-5:2020
– 2 – IEC 61280-4-5:2020 © IEC 2020
CONTENTS

FOREWORD ........................................................................................................................... 7

1 Scope .............................................................................................................................. 9

2 Normative references ...................................................................................................... 9

3 Terms, definitions, graphical symbols and abbreviated terms......................................... 10

3.1 Terms and definitions ............................................................................................ 10

3.2 Graphical symbols ................................................................................................ 12

3.3 Abbreviated terms ................................................................................................. 14

4 Test methods ................................................................................................................. 14

4.1 General ................................................................................................................. 14

4.2 Cabling configurations and applicable test methods .............................................. 15

5 Overview of uncertainties .............................................................................................. 16

5.1 General ................................................................................................................. 16

5.2 Sources of significant uncertainties ....................................................................... 16

5.3 Consideration of the PM ........................................................................................ 17

5.4 Consideration of test cord connector grade ........................................................... 17

5.5 Typical uncertainty values for multimode testing ................................................... 17

5.6 Typical uncertainty values for single-mode testing ................................................ 19

6 Apparatus ...................................................................................................................... 20

6.1 General ................................................................................................................. 20

6.2 Light source .......................................................................................................... 20

6.2.1 General ......................................................................................................... 20

6.2.2 Stability ......................................................................................................... 20

6.2.3 Spectral characteristics (LSPM measurement) ............................................... 21

6.3 Launch cord .......................................................................................................... 21

6.4 Receive or tail cord ............................................................................................... 22

6.5 Substitution cord ................................................................................................... 22

6.6 Adapter cord ......................................................................................................... 23

6.7 Power meter – LSPM methods only....................................................................... 23

6.8 OTDR apparatus ................................................................................................... 24

6.9 Connector end face cleaning and inspection equipment ........................................ 24

6.10 Adapters ............................................................................................................... 24

7 Procedures .................................................................................................................... 24

7.1 General ................................................................................................................. 24

7.2 Common procedures ............................................................................................. 25

7.2.1 Care of the test cords .................................................................................... 25

7.2.2 Take reference measurements....................................................................... 25

7.2.3 Inspect and clean the ends of the optical fibres in the cabling ........................ 25

7.2.4 Take the measurements ................................................................................ 25

7.2.5 Make the calculations .................................................................................... 25

7.2.6 Multi-fibre and bi-directional testing ............................................................... 25

7.3 Calibration ............................................................................................................ 26

7.4 Safety ................................................................................................................... 26

8 Calculations ................................................................................................................... 26

9 Documentation .............................................................................................................. 26

9.1 Information for each test ....................................................................................... 26

9.2 Information to be available .................................................................................... 26

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SIST EN IEC 61280-4-5:2020
IEC 61280-4-5:2020 © IEC 2020 – 3 –

Annex A (normative) One-cord method ................................................................................ 27

A.1 Applicability of the test method ............................................................................. 27

A.2 Apparatus ............................................................................................................. 27

A.3 Procedure for unpinned to unpinned cabling with unpinned power meter ............... 27

A.4 Procedure for unpinned to pinned cabling with unpinned power meter .................. 28

A.5 Procedure for pinned to pinned cabling with pinned power meter .......................... 29

A.6 Procedure for unpinned to unpinned cabling with pinned power meter and

gender-neutral test cord ........................................................................................ 30

A.7 Calculation ............................................................................................................ 31

A.8 Components of reported attenuation ..................................................................... 31

Annex B (normative) Three-cord method .............................................................................. 32

B.1 Applicability of the test method ............................................................................. 32

B.2 Apparatus ............................................................................................................. 32

B.3 Procedure for unpinned to unpinned cabling ......................................................... 32

B.4 Procedure for unpinned to pinned cabling ............................................................. 33

B.5 Procedure for pinned to pinned cabling ................................................................. 34

B.6 Procedure, channel test (general) ......................................................................... 35

B.7 Calculations .......................................................................................................... 36

B.8 Components of reported attenuation ..................................................................... 36

Annex C (normative) Adapter-cord method .......................................................................... 37

C.1 Applicability of the test method ............................................................................. 37

C.2 Apparatus ............................................................................................................. 37

C.3 Procedure for unpinned to unpinned cabling with pinned power meter .................. 37

C.4 Procedure for unpinned to pinned cabling with pinned power meter ...................... 38

C.5 Procedure for pinned to unpinned cabling with unpinned power meter .................. 39

C.6 Procedure for pinned to pinned cabling with unpinned power meter ...................... 40

C.7 Calculations .......................................................................................................... 41

C.8 Components of reported attenuation ..................................................................... 42

Annex D (normative) Equipment cord method ...................................................................... 43

D.1 Applicability of the test method ............................................................................. 43

D.2 Apparatus ............................................................................................................. 43

D.3 Procedure ............................................................................................................. 43

D.4 Calculation ............................................................................................................ 44

D.5 Components of reported attenuation ..................................................................... 44

D.6 Typical uncertainty values ..................................................................................... 45

Annex E (normative) Optical time domain reflectometer ....................................................... 46

E.1 Applicability of the test method ............................................................................. 46

E.2 Apparatus ............................................................................................................. 46

E.2.1 General ......................................................................................................... 46

E.2.2 OTDR ............................................................................................................ 46

E.2.3 Test cords ..................................................................................................... 47

E.3 Procedure (test method) ....................................................................................... 47

E.4 Calculation ............................................................................................................ 48

E.4.1 General ......................................................................................................... 48

E.4.2 Connection location ....................................................................................... 48

E.4.3 Definition of the power levels F and F ........................................................ 49

1 2

E.4.4 Alternative calculation.................................................................................... 50

E.5 OTDR uncertainties .............................................................................................. 52

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SIST EN IEC 61280-4-5:2020
– 4 – IEC 61280-4-5:2020 © IEC 2020

Annex F (normative) Requirements for the multimode source characteristics ....................... 53

Annex G (informative) OTDR configuration information ........................................................ 54

G.1 General ................................................................................................................. 54

G.2 Other measurement configurations ....................................................................... 54

G.2.1 General ......................................................................................................... 54

G.2.2 Measurement with low return loss connectors or short length cabling ............ 54

G.2.3 Measurement with APC connectors ............................................................... 56

Annex H (informative) Test cord, breakout cord, and cassette attenuation verification ......... 58

H.1 General ................................................................................................................. 58

H.2 Apparatus ............................................................................................................. 58

H.3 General procedure ................................................................................................ 58

H.3.1 Overview ....................................................................................................... 58

H.3.2 Test cord verification ..................................................................................... 59

H.3.3 Cassette and breakout cord verification ......................................................... 60

H.4 Test cord verification prior to cabling measurement .............................................. 61

H.4.1 General ......................................................................................................... 61

H.4.2 Procedure for unpinned to unpinned cabling measurement ............................ 61

H.4.3 Procedure for unpinned to pinned cabling measurement ................................ 62

H.4.4 Procedure for pinned to pinned cabling measurement .................................... 63

Annex I (normative) On the use of low attenuation grade test cords ..................................... 66

I.1 General ................................................................................................................. 66

I.2 Practical configurations and assumptions.............................................................. 66

I.2.1 Component specifications .............................................................................. 66

I.2.2 Conventions .................................................................................................. 67

I.2.3 Reference planes .......................................................................................... 67

I.3 Impact of using low attenuation grade test cords for recommended LSPM

methods ................................................................................................................ 68

I.4 Examples for LSPM measurements ....................................................................... 68

I.4.1 Example 1: Configuration Au-u, 1-C method (Annex A) .................................. 68

I.4.2 Example 2: Configuration Du-u, EC method (Annex D) .................................. 69

I.5 Impact of using reference grade test cords for different configurations using

the OTDR test method .......................................................................................... 69

I.5.1 Cabling configurations Au-u, Ap-u and Ap-p .................................................. 69

I.5.2 Cabling configuration Du-u ............................................................................ 70

Bibliography .......................................................................................................................... 72

Figure 1 – Connector and apparatus symbols ....................................................................... 13

Figure 2 – Symbol for cabling under test ............................................................................... 14

Figure 3 – OTDR schematic with external optical switch ....................................................... 24

Figure A.1 – Reference measurement for unpinned to unpinned cabling using unpinned

power meter .......................................................................................................................... 28

Figure A.2 – Test measurement for unpinned to unpinned cabling using unpinned

power meter .......................................................................................................................... 28

Figure A.3 – Reference measurement for unpinned to pinned cabling using unpinned

power meter .......................................................................................................................... 29

Figure A.4 – Test measurement for unpinned to pinned cabling using unpinned power

meter .................................................................................................................................... 29

Figure A.5 – Reference measurement for pinned to pinned cabling using pinned power

meter .................................................................................................................................... 30

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SIST EN IEC 61280-4-5:2020
IEC 61280-4-5:2020 © IEC 2020 – 5 –

Figure A.6 – Test measurement for pinned to pinned cabling using pinned power meter ....... 30

Figure A.7 – Reference measurement for unpinned to unpinned cabling using pinned

power meter .......................................................................................................................... 31

Figure A.8 – Test measurement for unpinned to unpinned cabling (gender-neutral TC1)

using pinned power meter ..................................................................................................... 31

Figure B.1 – Reference measurement for unpinned to unpinned cabling using pinned

power meter .......................................................................................................................... 33

Figure B.2 – Test measurement for unpinned to unpinned cabling using pinned power

meter .................................................................................................................................... 33

Figure B.3 – Reference measurement for unpinned to pinned cabling using pinned

power meter .......................................................................................................................... 34

Figure B.4 – Test measurement for unpinned to pinned cabling using pinned power

meter .................................................................................................................................... 34

Figure B.5 – Reference measurement for pinned to pinned cabling using unpinned

power meter .......................................................................................................................... 35

Figure B.6 – Test measurement for pinned to pinned cabling using unpinned power

meter .................................................................................................................................... 35

Figure B.7 – Reference measurement for channel test using unpinned power meter ............. 36

Figure B.8 – Test measurement for channel test using unpinned power meter ...................... 36

Figure C.1 – Reference measurement for unpinned to unpinned cabling using pinned

power meter .......................................................................................................................... 38

Figure C.2 – Test measurement for unpinned to unpinned cabling using pinned power

meter .................................................................................................................................... 38

Figure C.3 – Reference measurement for unpinned to pinned cabling using pinned

power meter .......................................................................................................................... 39

Figure C.4 – Test measurement for unpinned to pinned cabling using pinned power

meter .................................................................................................................................... 39

Figure C.5 – Reference measurement for unpinned to pinned cabling using unpinned

power meter .......................................................................................................................... 40

Figure C.6 – Test measurement for unpinned to pinned cabling using unpinned power

meter .................................................................................................................................... 40

Figure C.7 – Reference measurement for unpinned to pinned cabling using unpinned

power meter .......................................................................................................................... 41

Figure C.8 – Test measurement for unpinned to pinned cabling using unpinned power

meter .................................................................................................................................... 41

Figure D.1 – Reference measurement using pinned power meter .......................................... 44

Figure D.2 – Test measurement using pinned power meter ................................................... 44

Figure E.1 – OTDR method ................................................................................................... 48

Figure E.2 – Location of the ports of the cabling under test ................................................... 49

Figure E.3 – Graphic construction of F and F .................................................................... 50

1 2

Figure E.4 – Graphic construction of F , F , F and F .................................................... 51

1 11 12 2
Figure G.1 –
...

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