SIST EN 62343-2:2014

Dynamic modules - Part 2: Reliability qualification

EN IEC 62343-2 applies to dynamic modules and devices (DMs) which are commercially available. Examples are tuneable chromatic dispersion compensators, wavelength selective switches and optical channel monitors. Optical amplifiers are not included in this list, but are treated in IEC 61291-5-2. For reliability qualification purposes, some information about the internal components, parts and interconnections is needed; these internal parts are treated as black boxes. This standard gives requirements for the evaluation of DM reliability by combining the reliability of such internal black boxes. The objectives of this standard are the following: • to specify the requirements for the reliability qualification of DMs; • to give the minimum list of reliability qualification tests, requirements on failure criteria during testing and on reliability predictions, and give the relevant normative references.

Dynamische Module - Teil 2: Beurteilung der Zuverlässigkeit

Modules dynamiques - Partie 2: Qualification de fiabilité

L'IEC 62343-2:2014 s'applique aux dispositifs et aux modules dynamiques disponibles sur le marché. Les exemples suivants peuvent être donnés:
- compensateurs de dispersion chromatique accordables,
- commutateurs sélectifs en longueur d'onde et
- contrôleurs de canal de transmission optique. Les amplificateurs optiques ne sont pas inclus dans cette liste, mais ils sont traités dans l'IEC 61291-5-2. Dans le cadre de la qualification de fiabilité, certaines informations sur les composants, les constituants et les interconnexions internes sont nécessaires; ces constituants internes sont traités comme des boîtes noires. La présente norme donne les exigences pour l'évaluation de la fiabilité des modules dynamiques en combinant la fiabilité de telles boîtes noires internes. Les objectifs de la présente norme sont les suivants:
- spécifier les exigences pour la qualification de fiabilité des modules dynamiques;
- donner la liste minimale des essais de qualification de fiabilité, les exigences concernant les critères de défaillance pendant un essai et les prévisions de fiabilité, et donner les références normatives appropriées. Cette deuxième édition annule et remplace la première édition parue en 2011 et constitue une révision technique. La principale modification par rapport à l'édition précédente consiste en l'ajout de l'Annexe A (informative), Eléments d'essai de fiabilité et leurs conditions.
Mots clés: dispositifs et aux modules dynamiques, compensateurs de dispersion chromatique accordables, commutateurs sélectifs en longueur d'onde, canal de transmission optique.

Dinamični moduli - 2. del: Kvalifikacije zanesljivosti (IEC 62343-2:2014)

Standard EN IEC 62343-2 se uporablja za dinamične module in naprave, ki so komercialno na voljo. Med primere spadajo nastavljivi kompenzatorji barvne razpršenosti, valovnodolžinska selektivna stikala in optični kanalski monitorji. Optični ojačevalniki niso vključeni na ta seznam, ampak so obravnavani v standardu IEC 61291-5-2. Za namene kvalifikacij zanesljivosti so potrebne nekatere informacije o notranjih komponentah, delih in povezavah; ti notranji deli so obravnavani kot črne skrinjice. Ta standard določa zahteve za ocenjevanje zanesljivosti dinamičnih modulov in naprav s kombiniranjem zanesljivosti takih notranjih črnih skrinjic. Cilji tega standarda so: • določiti zahteve kvalifikacij zanesljivosti dinamičnih modulov in naprav; • podati najmanjši seznam preskusov kvalifikacij zanesljivosti, zahteve glede meril odpovedi med preskušanjem in predvidevanj zanesljivosti, ter podati ustrezna normativna sklicevanja.

General Information

• Status: Withdrawn
• Publication Date: 12-Oct-2014
• Withdrawal Date: 24-Oct-2022
• ICS: 33.180.30 - Optic amplifiers
• Technical Committee: MOC - Mobile Communications
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 25-Oct-2022
• Due Date: 17-Nov-2022
• Completion Date: 25-Oct-2022
• Ref Project: EN 62343-2:2014 - Dynamic modules - Part 2: Reliability qualification

Relations

• Revised: SIST EN IEC 62343-2-1:2020 - Dynamic modules - Part 2-1: Reliability qualification - Test template (IEC 62343-2-1:2019)
• Effective Date: 29-Oct-2019
• Replaces: SIST EN 62343-2:2011 - Dynamic modules - Part 2: Reliability qualification (IEC 62343-2:2011)
• Effective Date: 17-Sep-2013
• Revised: SIST EN 62343-2:2011 - Dynamic modules - Part 2: Reliability qualification (IEC 62343-2:2011)
• Effective Date: 06-May-2014
• Replaces: SIST EN 62343-2:2011 - Dynamic modules - Part 2: Reliability qualification (IEC 62343-2:2011)
• Effective Date: 28-Jan-2023
• Replaces: SIST EN 62343-2:2011 - Dynamic modules - Part 2: Reliability qualification (IEC 62343-2:2011)
• Effective Date: 07-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 62343-2:2014
01-november-2014
1DGRPHãþD
SIST EN 62343-2:2011
'LQDPLþQLPRGXOLGHO.YDOLILNDFLMH]DQHVOMLYRVWL,(&
Dynamic modules - Part 2: Reliability qualification
Ta slovenski standard je istoveten z: EN 62343-2:2014
ICS:
33.180.30 2SWLþQLRMDþHYDOQLNL Optic amplifiers
SIST EN 62343-2:2014 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 62343-2:2014

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SIST EN 62343-2:2014


EUROPEAN STANDARD EN 62343-2

NORME EUROPÉENNE

EUROPÄISCHE NORM
September 2014
ICS 33.180 Supersedes EN 62343-2:2011
English Version
Dynamic modules - Part 2: Reliability qualification
(IEC 62343-2:2014)
Modules dynamiques - Partie 2: Qualification de fiabilité Dynamische Module - Teil 2: Beurteilung der
(CEI 62343-2:2014) Zuverlässigkeit
(IEC 62343-2:2014)
This European Standard was approved by CENELEC on 2014-09-01. 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.




European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 62343-2:2014 E

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SIST EN 62343-2:2014
EN 62343-2:2014 - 2 -

Foreword
The text of document 86C/1185/CDV, future edition 2 of IEC 62343-2, 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 62343-2:2014.

The following dates are fixed:
(dop) 2015-06-01
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2017-09-01
• latest date by which the national
standards conflicting with the
document have to be withdrawn

This document supersedes EN 62343-2:2011.

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 62343-2:2014 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 61000-4-2 NOTE Harmonized as EN 61000-4-2.
IEC 61000-4-3 NOTE Harmonized as EN 61000-4-3.
IEC 61000-4-4 NOTE Harmonized as EN 61000-4-4.
IEC 61000-4-5 NOTE Harmonized as EN 61000-4-5.
IEC 61000-4-6 NOTE Harmonized as EN 61000-4-6.
IEC 61291-5-2 NOTE Harmonized as EN 61291-5-2.
IEC 61300-2-5 NOTE Harmonized as EN 61300-2-5.
IEC 61300-2-9 NOTE Harmonized as EN 61300-2-9.
IEC 61300-2-42 NOTE Harmonized as EN 61300-2-42.
IEC 61300-2-44 NOTE Harmonized as EN 61300-2-44.
IEC 61753-1 NOTE Harmonized as EN 61753-1.
CISPR 22 NOTE Harmonized as EN 55022.

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SIST EN 62343-2:2014
- 3 - EN 62343-2:2014
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 1 When 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 61300-2-1 -  Fibre optic interconnecting devices and EN 61300-2-1 -
passive components - Basic test and
measurement procedures -- Part 2-1: Tests
- Vibration (sinusoidal)
IEC 61300-2-4 -  Fibre optic interconnecting devices and EN 61300-2-4 -
passive components - Basic test and
measurement procedures -- Part 2-4: Tests
- Fibre/cable retention
IEC 61300-2-12 -  Fibre optic interconnecting devices and EN 61300-2-12 -
passive components - Basic test and
measurement procedures -- Part 2-12:
Tests - Impact
1)
IEC 62005-9-1 -  Fibre optic interconnecting devices and EN 62005-9-1 -
passive components - Reliability -- Part 9-
1: Qualification of passive optical
components
IEC 62005-9-2 -  Reliability of fibre optic interconnecting - -
devices and passive optical components --
Part 9-2: Reliability qualification for single
fibre optic connector sets - single mode
IEC 62572 series Fibre optic active components and devices EN 62572 series
- Reliability standards
ISO 9000 -  Quality management systems - - -
Fundamentals and vocabulary


1)
At draft stage.

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SIST EN 62343-2:2014

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SIST EN 62343-2:2014



IEC 62343-2

®


Edition 2.0 2014-07




INTERNATIONAL



STANDARD




NORME



INTERNATIONALE











Dynamic modules –

Part 2: Reliability qualification




Modules dynamiques –

Partie 2: Qualification de fiabilité
















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE

PRICE CODE
INTERNATIONALE

CODE PRIX S


ICS 33.180 ISBN 978-2-8322-1799-3



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

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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SIST EN 62343-2:2014
– 2 – IEC 62343-2:2014 © IEC 2014
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms, definitions and abbreviations . 6
3.1 Terms and definitions . 6
3.2 Abbreviated terms . 6
4 Reliability qualification considerations . 7
4.1 General . 7
4.2 General consideration approach . 7
4.3 DM product design . 7
5 Reliability qualification requirements. 7
5.1 General . 7
5.2 Demonstration of product quality . 8
5.3 Testing responsibilities . 8
5.4 Tests . 9
5.4.1 Thorough characterization . 9
5.4.2 Reliability qualification of components, parts and interconnections . 9
5.4.3 Reliability qualification of DM assembly process . 9
5.4.4 Reliability qualification of the Design 1 DM . 9
5.4.5 Reliability qualification of the Design 2 DM . 11
5.4.6 Pass/fail criteria . 13
5.5 Reliability assessment procedure . 13
5.5.1 Analysis of reliability results . 13
5.5.2 Reliability calculations . 13
5.5.3 Reliability qualification test methods . 14
6 Guidance – FMEA and qualification-by-similarity . 14
Annex A (informative)  Reliability test items and their conditions . 16
A.1 General . 16
A.2 Mechanical environment tests . 16
A.3 Temperature and humidity environmental tests . 17
A.4 Electromagnetic compatibility tests . 17
A.5 Fibre integrity tests . 18
Bibliography . 20


Table 1 – Minimum list for tests required on Design 1 DMs . 10
Table 2 – Minimum list for tests required on Design 2 DMs . 12
Table 3 – Failure rate of parts . 14
Table 4 – Relevant list of IEC reliability test methods for optical components . 14
Table A.1 – Mechanical environmental tests and severity . 16
Table A.2 – Temperature and humidity tests and severity . 17
Table A.3 – Electromagnetic compatibility test items and their severities . 18
Table A.4 – Fibre integrity test items and their severities . 19

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SIST EN 62343-2:2014
IEC 62343-2:2014 © IEC 2014 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

DYNAMIC MODULES –

Part 2: Reliability qualification

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62343-2 has been prepared by subcommittee 86C: Fibre optic
systems and active devices, of IEC technical committee 86: Fibre optics.
This second edition cancels and replaces the first edition published in 2011 and constitutes a
technical revision. The main change with respect to the previous edition is the addition of
Annex A (informative), Reliability test items and their conditions.
The text of this standard is based on the following documents:
CDV Report on voting
86C/1185/CDV 86C/1248/RVC

Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.

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SIST EN 62343-2:2014
– 4 – IEC 62343-2:2014 © IEC 2014
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 62343 series, published under the general title Dynamic modules,
can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

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SIST EN 62343-2:2014
IEC 62343-2:2014 © IEC 2014 – 5 –
DYNAMIC MODULES –

Part 2: Reliability qualification



1 Scope
This part of IEC 62343 applies to dynamic modules and devices (DMs) which are
commercially available. Examples are tuneable chromatic dispersion compensators,
wavelength selective switches and optical channel monitors.
Optical amplifiers are not included in this list, but are treated in IEC 61291-5-2.
For reliability qualification purposes, some information about the internal components, parts
and interconnections is needed; these internal parts are treated as black boxes. This standard
gives requirements for the evaluation of DM reliability by combining the reliability of such
internal black boxes.
The objectives of this standard are the following:
• to specify the requirements for the reliability qualification of DMs;
• to give the minimum list of reliability qualification tests, requirements on failure criteria
during testing and on reliability predictions, and give the relevant normative references.
2 Normative references
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.
IEC 61300-2-1, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-1: Tests – Vibration (sinusoidal)
IEC 61300-2-4, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-4: Tests – Fibre/cable retention
IEC 61300-2-12, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-12: Tests – Impact
IEC 62005-9-1, Fibre optic interconnecting devices and passive components – Reliability –
1
Part 9-1: Qualification of passive optical components
IEC 62005-9-2, Reliability of fibre optic interconnecting devices and passive optical
components – Part 9-2: Reliability qualification for single fibre optic connector sets – Single
mode
IEC 62572 (all parts), Fibre optic active components and devices – Reliability standards
ISO 9000: Quality management systems – Fundamentals and vocabulary
___________
1
 To be published.

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SIST EN 62343-2:2014
– 6 – IEC 62343-2:2014 © IEC 2014
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1.1
failure
non-compliance to product specification or change in parameters as set by the standard or
agreed by the customer and supplier
3.1.2
qualification
commonly used as the abbreviation for reliability qualification
Note 1 to entry: It is used as a formal testing to determine whether or not the product is suitable for telecom
applications and, therefore, “pass or fail” is the expected outcome
Note 2 to entry: This is different from a reliability test, which is in nature a reliability “engineering test”. Reliability
tests are designed to understand the reliability consideration or estimate the reliability of the product. Pass or fail is
not the main output.
3.1.3
reliability
< time period > minimum period of DM continuous operation without failure at specified
operating and environmental conditions
3.1.4
probability to perform required functions at specified operating and
environmental conditions
Note 1 to entry: The reliability of a DM is expressed by either of the following two parameters: mean time between
failure (MTBF) and failures in time (FIT):
• the MTBF is the mean period of DM continuous operation without any failure at specified operating and
environmental conditions;
9
• the FIT is the number of failures expected in 10 device-hours at specified operating and environmental
conditions.
3.2 Abbreviated terms
DM  dynamic module
DS  detail specification
ESD electrostatic discharge
FIT  failure in time
FMEA failure mode and effects analysis
LCD liquid crystal device
MTBF mean time between failure
RH  relative humidity
UCL upper confidence level
VOA variable optical attenuators

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SIST EN 62343-2:2014
IEC 62343-2:2014 © IEC 2014 – 7 –
4 Reliability qualification considerations
4.1 General
Since DMs are relatively new products in the commercial market and involve different
technologies, the requirements included in this standard will need to be reviewed as
technology progresses.
4.2 General consideration approach
It is worth emphasizing the fundamental approach of reliability qualification adopted in this
standard:
a) Any parts that can be effectively qualified on their individual levels shall be qualified at
that level. Their qualification shall be based on IEC standards or other industrial
standards in the absence of such IEC standards.
b) The qualification tests required at DM level shall be based on the degradation
mechanisms and failure modes that cannot be effectively detected in the lower part levels.
At the DM level, the qualification tests shall not attempt to discover or identify those
degradation mechanisms and failure modes that can be discovered in the lower assembly
levels than the final product level. For example, if all parts in the DM can be effectively
tested for damp heat-accelerated degradations, there is no need to repeat the damp heat
test at the DM level.
4.3 DM product design
A DM is an assembly of various components, parts and interconnections. There are two basic
designs in the current commercial DM market:
a) Design 1: parts (as a general term that includes components, parts and interconnections
used to build a DM from the of point of view of this standard) are packaged separately.
Their packages are usually either hermetic or moisture-resistant. They are integrated into
a housing (usually non-hermetic or not moisture-resistant).
b) Design 2: some parts used in DMs are unpackaged basic optical elements (e.g. crystals,
lenses, mirrors, etc.). These parts cannot be effectively qualified by themselves. These
parts/elements are integrated and packaged inside a hermetic box or moisture-resistant
box.
In Design 1, the individual parts can be tested and qualified individually and therefore, the DM
qualification does not have to repeat the tests that are performed in the part levels for the
same degradation mechanisms and failure modes.
In Design 2, the DM qualification is again focused on the tests that cannot be effectively
performed in the lower assembly levels (i.e., the basic part level). However, in this case there
are usually more tests required since the parts cannot be effectively tested at the part level
individually.
Due to the differences in the designs, and therefore different mechanisms and failure modes,
different qualification test approaches have to be developed separately. They are described in
5.4.4 for Design 1 and 5.4.5 for Design 2, respectively.
5 Reliability qualification requirements
5.1 General
For the purpose of this standard, each internal component, part and interconnection shall be
treated as a black box. It is also important to point out that the parts in the DM of this design
include the fibre splicing, fibre routing and fibre anchoring, as well as how the fibre exits from
the housing and how parts are mounted.

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SIST EN 62343-2:2014
– 8 – IEC 62343-2:2014 © IEC 2014
This standard is based on the assumption that the reliability of a DM can be evaluated with
sufficient confidence from the FIT rates of its internal black boxes when the assembly process
of the constituents has been qualified.
There are degradation and failures not due to part failures. An example is the fibre routing
and fibre holders. The quality and reliability of the assembling, for example fibre routing, shall
be assessed and qualified through the process evaluation and qualification. The procedures
to qualify the assembly process are described in 5.4.3.
The internal black boxes often constituting a DM are listed below:
• passive optical components, including patch cords, pigtails, connectors and splices;
• active optical components;
• electronics, including PCBs, electrical connectors, etc.
• others (e.g. fibre splicing, fibre routing and fibre anchoring, as well as how the fibre exits
from the housing and how components are mounted).
The DM manufacturers shall declare the number and type of the internal black boxes
constituting the DM and give the failure rates (in FITs) for each black box.
The DM failure rate shall be calculated by suitably combining the failure rates in FITs of its
black boxes, as described in the 5.5.2. The model and assumptions used in DM failure rate
calculation shall be provided and justified for review, if the DM manufacturer has so requested.
5.2 Demonstration of product quality
Since the reliability qualification tests are performed on a limited number of units, it is
essential to have a quality management system in place to assure that the quality of all units
is consistent. Testing on a limited number of samples will be representative of the production
units to be delivered after the qualification is completed.
This standard (where required by the detailed specification) specifies the minimum mandatory
requirements to assess reliability qualification of a DM and is intended to be part of a total DM
reliability program and quality management system developed and implemented by the DM
manufacturer.
The DM manufacturer shall demonstrate:
• a documented and audited manufacturing process, including the reliability qualification of
purchased parts, in accordance with ISO 9000;
• performance data of production units shall be available for review, and its distribution shall
show processes are under adequate controls;
• a reliability qualification programme, including, for example, accelerated life testing, burn-
in and screening of parts and DMs;
• a reliability qualification maintenance programme to ensure continuity of qualification
status (this can be achieved by means of periodic reliability qualification tests of the
product or similar products);
• a procedure to ensure an appropriate feedback to development and production on
reliability issues.
5.3 Testing responsibilities
The DM manufacturer is responsible for performing reliability qualification testing.
The testing detailed in this standard shall be performed by the DM manufacturer. Additional
testing may be specified in the detailed specification.

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SIST EN 62343-2:2014
IEC 62343-2:2014 © IEC 2014 – 9 –
5.4 Tests
5.4.1 Thorough characterization
A thorough characterization of the product for its performance (may be beyond those in the
performance specifications) and overall operating conditions (may be beyond those in the
operating condition specifications) shall be performed. The data shall be collected and
analysed (minimal for the mean and standard deviation), and be available for review.
5.4.2 Reliability qualification of components, parts and interconnections
All components, parts, and interconnections used to build DMs shall be qualified according to
the appropriate IEC standards for each of them. The components may include, but are not
limited to, variable optical attenuators (VOAs), taps/splitters, detectors, isolators, circulators,
electronic components, splicing connections (including the packaging or re-coating), crystals,
mirrors, prisms, etc.
If the IEC standards for the parts are under development or not yet available, the IEC
standards for parts of similar failure modes and degradation mechanisms should be adopted.
An analysis of similarity of failure modes and degradation mechanisms shall be provided to
support the approach.
Considerations shall be given to designs that use many pieces of same parts. The failure
rates of such parts may significantly contribute to the overall system failure rate or downtime.
The cumulative degradation from individual parts should also be investigated. The results may
require tests on additional samples or more stringent failure definitions.
Additionally, the pass/fail criteria of the part qualification shall be thoroughly examined to
determine whether or not the part qualification is adequate. For an example, if several 1x2
taps are used in a series design, not only the failure rate but also the degradation is multiplied
(i.e. 0,5 dB pass/fail criterion is mu
...