EN IEC 61280-1-4:2023

SLOVENSKI STANDARD
01-april-2023
Nadomešča:
SIST EN 61280-1-4:2010
Postopki preskušanja optičnega komunikacijskega podsistema - 1-4. del: Splošni
komunikacijski podsistemi - Merilna metoda za pretok obkrožajočega svetlobnega
vira (IEC 61280-1-4:2023)
Fibre optic communication subsystem test procedures - Part 1-4: General
communication subsystems - Light source encircled flux measurement method (IEC
61280-1-4:2023)
Lichtwellenleiter-Kommunikationsuntersysteme - Grundlegende Prüfverfahren - Teil 1-4:
Allgemeine Kommunikationsuntersysteme - Verfahren zur Messung des begrenzten
Lichtstroms einer Strahlungsquelle (IEC 61280-1-4:2023)
Procédures d’essai des sous-systèmes de télécommunications fibroniques - Partie 1-4:
Sous-systèmes généraux de télécommunication - Méthode de mesure du flux inscrit de
la source optique (IEC 61280-1-4:2023)
Ta slovenski standard je istoveten z: EN IEC 61280-1-4:2023
ICS:
33.180.01 Sistemi z optičnimi vlakni na Fibre optic systems in
splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 61280-1-4

NORME EUROPÉENNE
EUROPÄISCHE NORM February 2023
ICS 33.180.01 Supersedes EN 61280-1-4:2010
English Version
Fibre optic communication subsystem test procedures - Part 1-4:
General communication subsystems - Light source encircled flux
measurement method
(IEC 61280-1-4:2023)
Procédures d'essai des sous-systèmes de Lichtwellenleiter-Kommunikationsuntersysteme -
télécommunication fibroniques - Partie 1-4: Sous-systèmes Grundlegende Prüfverfahren - Teil 1-4: Allgemeine
généraux de télécommunication - Méthode de mesure du Kommunikationsuntersysteme - Verfahren zur Messung des
flux inscrit de la source optique begrenzten Lichtstroms einer Strahlungsquelle
(IEC 61280-1-4:2023) (IEC 61280-1-4:2023)
This European Standard was approved by CENELEC on 2023-02-23. 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,
Türkiye 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
© 2023 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61280-1-4:2023 E

European foreword
The text of document 86C/1806/CDV, future edition 3 of IEC 61280-1-4, 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 61280-1-4:2023.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2023-08-23
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2026-02-23
document have to be withdrawn
This document supersedes EN 61280-1-4:2010 and all of its amendments and corrigenda (if any).
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.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 61280-1-4:2023 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 standard indicated:
IEC 60793-1-20 NOTE Approved as EN 60793-1-20
IEC 60793-1-41 NOTE Approved as EN 60793-1-41
IEC 61745:2017 NOTE Approved as EN 61745:2017 (not modified)
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 60793-2-10 - Optical fibres - Part 2-10: Product EN IEC 60793-2-10 -
specifications - Sectional specification for
category A1 multimode fibres
IEC 60825-1 - Safety of laser products - Part 1: EN 60825-1 -
Equipment classification and requirements

IEC 61280-1-4 ®
Edition 3.0 2023-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Fibre optic communication subsystem test procedures –

Part 1-4: General communication subsystems – Light source encircled flux

measurement method
Procédures d’essai des sous-systèmes de télécommunication fibroniques –

Partie 1-4: Sous-systèmes généraux de télécommunication – Méthode de

mesure du flux inscrit de la source optique

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.01 ISBN 978-2-8322-6361-7

– 2 – IEC 61280-1-4:2023 © IEC 2023
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Symbols . 8
5 Assumptions . 10
5.1 Assumptions applicable to the characterization of data sources . 10
5.2 Assumptions applicable to the characterization of measurement sources . 10
6 Apparatus . 10
6.1 Common apparatus . 10
6.1.1 General . 10
6.1.2 Computer. 10
6.1.3 Image digitizer . 11
6.1.4 Detector . 11
6.1.5 Magnifying optics . 11
6.1.6 Attenuator . 12
6.1.7 Micro positioner (optional) . 12
6.1.8 Input port . 12
6.1.9 Calibration light source . 12
6.2 Transmission source apparatus . 13
6.2.1 General . 13
6.2.2 Test jumper assembly . 13
6.2.3 Fibre shaker . 13
6.3 Measurement source apparatus . 15
7 Sampling and specimens . 15
8 Geometric calibration . 15
9 Measurement procedure . 15
9.1 Safety . 15
9.2 Image acquisition . 15
9.2.1 Raw image acquisition . 15
9.2.2 Dark image acquisition . 16
9.2.3 Corrected image . 16
9.3 Optical centre determination . 16
9.3.1 General . 16
9.3.2 Centroid image . 17
9.3.3 Centroid computation . 17
9.4 Test source image acquisition . 18
10 Computation of encircled flux . 18
10.1 Computation of radial data functions . 18
10.2 Integration limit and baseline determination . 20
10.2.1 Integration limit . 20
10.2.2 Baseline determination . 20
10.2.3 Baseline subtraction . 20
10.3 Computation of encircled flux . 21
11 Results . 21

IEC 61280-1-4:2023 © IEC 2023 – 3 –
11.1 Information available with each measurement . 21
11.2 Information available upon request . 21
12 Specification information . 22
Annex A (informative) Measurement sensitivity considerations . 23
A.1 Baseline averaging considerations . 23
A.2 Pixel sensitivity variation calibration . 25
A.3 Correlated double sampling . 25
A.4 Imperfections of practical detectors and optics . 26
Bibliography . 28

Figure 1 – Apparatus block diagram . 10
Figure 2 – Typical set-up for transmission source measurement . 13
Figure 3 – Fibre shaker example . 14
Figure 4 – Pixel and ring illustration .
...