EN 61280-2-2:2012

Fibre optic communication subsystem test procedures - Part 2-2: Digital systems - Optical eye pattern, waveform and extinction ratio measurement

IEC 61280-2-2:2012(E) describes a test procedure to verify compliance with a predetermined waveform mask and to measure the eye pattern and waveform parameters such as rise time, fall time, modulation amplitude and extinction ratio. This fourth edition cancels and replaces the third edition published in 2008 and constitutes a technical revision .This edition includes the following significant technical changes with respect to the previous edition: additional definitions; clarification of test procedures. Keywords: optical eye pattern, waveform, modulation amplitude, extinction ratio

Prüfverfahren für Lichtwellenleiter-Kommunikationsuntersysteme - Teil 2-2: Digitale Systeme - Messung des optischen Augendiagramms, der Wellenform und des Extinktionsverhältnisses

Procédures d'essai des sous-systèmes de télécommunications à fibres optiques - Partie 2-2: Systèmes numériques - Mesure du diagramme de l'oeil optique, de la forme d'onde et du taux d'extinction

IEC 61280-2-2: 2012 décrit une procédure d’essai pour vérifier la conformité à un masque de forme d’onde prédéterminé et mesurer le diagramme de l’œil et les paramètres de la forme d’onde tels que le temps de montée, le temps de descente, l'amplitude de modulation et le taux d’extinction. Cette quatrième édition annule et remplace la troisième édition parue en 2008 et constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: définitions supplémentaires; clarification des procédures d'essai. La présente version bilingue (2020-09) correspond à la version anglaise monolingue publiée en 2012-10.

Postopki preskušanja optičnega komunikacijskega podsistema - 2-2. del: Digitalni sistemi - Merjenje po vzorcu optičnega očesa, valovne oblike in hitrosti ugašanja (IEC 61280-2-2:2012)

Namen tega dela standarda IEC 61280 je opisati postopek preskušanja za preverjanje skladnosti s predhodno določeno masko valovne oblike ter izmeriti vzorec očesa in parametre valovne oblike, kot so čas dviga, čas padca, amplituda modulacije in hitrost ugašanja.

General Information

• Status: Published
• Publication Date: 13-Dec-2012
• Withdrawal Date: 28-Nov-2015
• ICS: 33.180.01 - Fibre optic systems in general
• Technical Committee: CLC/SR 86C - Fibre optic systems and active devices
• Drafting Committee: IEC/SC 86C - IEC_SC_86C
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 14-Dec-2012
• Completion Date: 14-Dec-2012
• Ref Project: SIST EN 61280-2-2:2013 - Fibre optic communication subsystem test procedures - Part 2-2: Digital systems - Optical eye pattern, waveform and extinction ratio measurement (IEC 61280-2-2:2012)

Relations

• Replaces: EN 61280-2-2:2008 - Fibre optic communication subsystem test procedures - Part 2-2: Digital systems - Optical eye pattern, waveform and extinction ratio measurement
• Effective Date: 29-Jan-2023
• Corrected By: EN 61280-2-2:2012/AC:2015 - Fibre optic communication subsystem test procedures - Part 2-2: Digital systems - Optical eye pattern, waveform and extinction ratio measurement
• Effective Date: 23-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-februar-2013
1DGRPHãþD
SIST EN 61280-2-2:2008
3RVWRSNLSUHVNXãDQMDRSWLþQHJDNRPXQLNDFLMVNHJDSRGVLVWHPDGHO'LJLWDOQL
VLVWHPL0HUMHQMHSRY]RUFXRSWLþQHJDRþHVDYDORYQHREOLNHLQKLWURVWLXJDãDQMD
,(&
Fibre optic communication subsystem test procedures - Part 2-2: Digital systems -
Optical eye pattern, waveform and extinction ratio measurement (IEC 61280-2-2:2012)
Prüfverfahren für Lichtwellenleiter-Kommunikationsuntersysteme - Teil 2-2: Digitale
Systeme - Messung des optischen Augendiagramms, der Wellenform und des
Extinktionsverhältnisses (IEC 61280-2-2:2012)
Procédures d'essai des sous-systèmes de télécommunications à fibres optiques - Partie
2-2: Systèmes numériques - Mesure du diagramme de l'oeil optique, de la forme d'onde
et du taux d'extinction (CEI 61280-2-2:2012)
Ta slovenski standard je istoveten z: EN 61280-2-2:2012
ICS:
33.180.01 6LVWHPL]RSWLþQLPLYODNQLQD Fibre optic systems in
VSORãQR general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 61280-2-2
NORME EUROPÉENNE
December 2012
EUROPÄISCHE NORM
ICS 33.180.01 Supersedes EN 61280-2-2:2008

English version
Fibre optic communication subsystem test procedures -
Part 2-2: Digital systems -
Optical eye pattern, waveform and extinction ratio measurement
(IEC 61280-2-2:2012)
Procédures d'essai des sous-systèmes  Prüfverfahren für Lichtwellenleiter-
de télécommunications à fibres optiques - Kommunikationsuntersysteme -
Partie 2-2: Systèmes numériques - Teil 2-2: Digitale Systeme -
Mesure du diagramme de l'oeil optique, Messung des optischen
de la forme d'onde et du taux d'extinction Augendiagramms, der Wellenform
(CEI 61280-2-2:2012) und des Extinktionsverhältnisses
(IEC 61280-2-2:2012)
This European Standard was approved by CENELEC on 2012-11-29. 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, Former Yugoslav Republic of Macedonia, France, Germany,
Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61280-2-2:2012 E
Foreword
The text of document 86C/1043/CDV, future edition 4 of IEC 61280-2-2, 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 61280-2-2:2012.

The following dates are fixed:
(dop) 2013-08-29
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2015-11-29
standards conflicting with the
document have to be withdrawn
This document supersedes EN 61280-2-2:2008.

EN 61280-2-2:2008:
- additional definitions;
- clarification of test procedures.

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 61280-2-2:2012 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 60825-1 NOTE Harmonised as EN 60825-1.
IEC 61281-1 NOTE Harmonised as EN 61281-1.

- 3 - EN 61280-2-2:2012
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year
IEC 61280-2-3 - Fibre optic communication subsystem EN 61280-2-3 -
test procedures -
Part 2-3: Digital systems - Jitter and wander
measurements
IEC 61280-2-2 ®
Edition 4.0 2012-10
INTERNATIONAL
STANDARD
colour
inside
Fibre optic communication subsystem test procedures –

Part 2-2: Digital systems – Optical eye pattern, waveform and extinction ratio

measurement
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
U
ICS 33.180.01 ISBN 978-2-83220-420-7

– 2 – 61280-2-2 © IEC:2012(E)
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Apparatus . 7
4.1 General . 7
4.2 Reference receiver definition . 8
4.3 Time-domain optical detection system . 8
4.3.1 Overview . 8
4.3.2 Optical-to-electrical (O/E) converter . 9
4.3.3 Linear-phase low-pass filter . 9
4.3.4 Oscilloscope . 10
4.4 Overall system response . 11
4.5 Oscilloscope synchronization system. 11
4.5.1 General . 11
4.5.2 Triggering with a clean clock . 12
4.5.3 Triggering using a recovered clock . 12
4.5.4 Triggering directly on data . 13
4.6 Pattern generator . 14
4.7 Optical power meter . 14
4.8 Optical attenuator . 14
4.9 Test cord . 14
5 Signal under test . 14
6 Instrument set-up and device under test set-up . 14
7 Measurement procedures . 15
7.1 Overview . 15
7.2 Extinction ratio measurement . 15
7.2.1 Configure the test equipment . 15
7.2.2 Measurement procedure . 15
7.2.3 Extinction ratio calculation . 16
7.3 Eye amplitude . 17
7.4 Optical modulation amplitude (OMA) measurement using the square wave
method . 17
7.4.1 General . 17
7.4.2 Oscilloscope triggering . 17
7.4.3 Amplitude histogram, step 1 . 17
7.4.4 Amplitude histogram, step 2 . 18
7.4.5 Calculate OMA . 18
7.5 Contrast ratio (for RZ signals) . 18
7.6 Jitter measurements . 18
7.7 Eye width . 19
7.8 Duty cycle distortion (DCD) . 19
7.9 Crossing percentage . 20
7.10 Eye height . 21

61280-2-2 © IEC:2012(E) – 3 –
7.11 Q-factor/signal-to-noise ratio (SNR). 21
7.12 Rise time . 21
7.13 Fall time . 22
8 Eye-diagram analysis using a mask . 23
8.1 Eye mask testing using the ‘no hits’ technique . 23
8.2 Eye mask testing using the ‘hit-ratio’ technique . 24
9 Test result . 26
9.1 Required information . 26
9.2 Available information . 26
9.3 Specification information . 26
Bibliography . 27

Figure 1 – Optical eye pattern, waveform and extinction ratio measurement
configuration . 8
Figure 2 – Oscilloscope bandwidths commonly used in eye pattern measurements . 10
Figure 3 – PLL jitter transfer function and resulting observed jitter transfer function . 13
Figure 4 – Histograms centred in the central 20 % of the eye used to determine the
mean logic one and 0 levels, b and b . 16
1 0
Figure 5 – OMA measurement using the square wave method . 18
Figure 6 – Construction of the duty cycle distortion measurement . 20
Figure 7 – Construction of the crossing percentage measurement . 21
Figure 8 – Construction of the risetime measurement with no reference receiver
filtering . 22
Figure 9 – Illustrations of several RZ eye-diagram parameters . 23
Figure 10 – Basic eye mask and coordi
...