SIST EN 61280-4-2:2001

Fibre optic communication subsystem basic test procedures -- Part 4-2: Fibre optic cable plant - Single-mode fibre optic cable plant attenuation

Describes procedures to measure the optical attenuation (loss) performance of installed single-mode fibre optic cable plants. May be used to measure the optical loss between any two passively connected points, including end terminations, of a single-mode fibre optic cable plant.

Lichtwellenleiter-Kommunikationsuntersysteme - Grundlegende Prüfverfahren -- Teil 4-2: Lichtwellenleiter-Kabelanlagen - Dämpfungsmessung in Einmoden-LWL-Kabelanlagen

Procédures d'essai de base des sous-systèmes de télécommunication à fibres optiques -- Partie 4-2: Installation de câbles à fibres optiques - Affaiblissement des installations de câbles à fibres unimodales

Décrit des procédures de mesure de l'affaiblissement (perte) optique des installations de câbles à fibres unimodales. Peut-être utilisée pour mesurer les pertes optiques entre deux points quelconques connectés passivement, y compris des terminaisons de connexion, d'une installation de câbles à fibres unimodales.

Fibre optic communication subsystem basic test procedures - Part 4-2: Fibre optic cable plant - Single-mode fibre optic cable plant attenuation (IEC 61 280-4-2:1999)

General Information

• Status: Withdrawn
• Publication Date: 31-Jan-2001
• Withdrawal Date: 14-Sep-2017
• ICS: 33.180.01 - Fibre optic systems in general
• Technical Committee: MOC - Mobile Communications
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 15-Sep-2017
• Due Date: 08-Oct-2017
• Completion Date: 15-Sep-2017
• Ref Project: EN 61280-4-2:1999 - Fibre optic communication subsystem basic test procedures - Part 4-2: Fibre optic cable plant - Single-mode fibre optic cable plant attenuation

Relations

• Revised: SIST EN 61280-4-2:2014 - Fibre-optic communication subsystem test procedures - Part 4-2: Installed cable plant- Single-mode attenuation and optical return loss measurement
• Effective Date: 06-May-2014
• Replaced By: SIST EN 61280-4-2:2014 - Fibre-optic communication subsystem test procedures - Part 4-2: Installed cable plant- Single-mode attenuation and optical return loss measurement
• Effective Date: 28-Jan-2023
• Replaced By: SIST EN 61280-4-2:2014 - Fibre-optic communication subsystem test procedures - Part 4-2: Installed cable plant- Single-mode attenuation and optical return loss measurement
• Effective Date: 29-Jan-2013

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 61280-4-2:2001
01-februar-2001
Fibre optic communication subsystem basic test procedures - Part 4-2: Fibre optic
cable plant - Single-mode fibre optic cable plant attenuation (IEC 61 280-4-2:1999)
Fibre optic communication subsystem basic test procedures -- Part 4-2: Fibre optic cable
plant - Single-mode fibre optic cable plant attenuation
Lichtwellenleiter-Kommunikationsuntersysteme - Grundlegende Prüfverfahren -- Teil 4-2:
Lichtwellenleiter-Kabelanlagen - Dämpfungsmessung in Einmoden-LWL-Kabelanlagen
Procédures d'essai de base des sous-systèmes de télécommunication à fibres optiques -
- Partie 4-2: Installation de câbles à fibres optiques - Affaiblissement des installations de
câbles à fibres unimodales
Ta slovenski standard je istoveten z: EN 61280-4-2:1999
ICS:
33.180.01 6LVWHPL]RSWLþQLPLYODNQLQD Fibre optic systems in
VSORãQR general
SIST EN 61280-4-2:2001 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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NORME CEI
INTERNATIONALE IEC
61280-4-2
INTERNATIONAL
Première édition
STANDARD
First edition
1999-08
Procédures d'essai de base des sous-systèmes
de télécommunication à fibres optiques –
Partie 4-2:
Installation de câbles à fibres optiques –
Affaiblissement des installations de câbles
à fibres unimodales
Fibre optic communication subsystem
basic test procedures –
Part 4-2:
Fibre optic cable plant –
Single-mode fibre optic cable plant attenuation
 IEC 1999 Droits de reproduction réservés  Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in
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microfilms, sans l'accord écrit de l'éditeur. writing from the publisher.
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Pour prix, voir catalogue en vigueur
For price, see current catalogue

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61280-4-2 © IEC:1999 – 3 –
CONTENTS
Page
FOREWORD . 5
Clause
1 Scope and object . 9
2 Normative references . 9
3 Apparatus .11
3.1 Method 1 – Optical power meter . 11
3.1.1 Light source . 11
3.1.2 Optical power measurement equipment . 11
3.1.3 Test jumpers . 11
3.2 Method 2 – Optical time domain reflectometer (OTDR) . 11
4 Test sample . 13
5 Procedure .13
5.1 Method 1 – Insertion loss using an optical power meter . 13
5.1.1 Method 1a – One jumper-cable measurement. 15
5.1.2 Method 1b – Two jumper-cable measurement. 15
5.1.3 Method 1c – Three jumper-cable measurement . 17
5.2 Method 2 – Insertion loss using an OTDR. 19
5.2.1 Calibration verification. 19
5.2.2 Cable plant attachment. 21
5.2.3 OTDR set-up. 21
5.2.4 Initial adjustment . 21
5.2.5 First cursor placement. 23
5.2.6 Second cursor placement . 23
5.2.7 Bi-directional measurement . 23
6 Calculations .23
6.1 Method 1. 23
6.2 Method 2. 23
6.3 Judgments . 23
7 Test results . 25
7.1 Required information. 25
7.2 Available information. 25
8 Specification information . 25
Annex A (informative) Bibliography . 27

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61280-4-2 © IEC:1999 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
––––––––––––
FIBRE OPTIC COMMUNICATION SUBSYSTEM
BASIC TEST PROCEDURES –
Part 4-2: Fibre optic cable plant –
Single-mode fibre optic cable plant attenuation
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61280-4-2 has been prepared by subcommittee 86C: Fibre optic
systems and active devices, of IEC technical committee 86: Fibre optics.
The text of this standard is based on the following documents:
FDIS Report on voting
86C/246/FDIS 86C/253/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 3.
Annex A is for information only.

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61280-4-2 © IEC:1999 – 7 –
The committee has decided that the contents of this publication will remain unchanged until 2005.
At this date, the publication will be
reconfirmed;
withdrawn;
replaced by a revised edition, or
amended.
Future standards in this series will carry the new general title as cited above. Titles of existing
standards in this series will be updated at the time of the next edition.

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61280-4-2 © IEC:1999 – 9 –
FIBRE OPTIC COMMUNICATION SUBSYSTEM
BASIC TEST PROCEDURES –
Part 4-2: Fibre optic cable plant –
Single-mode fibre optic cable plant attenuation
1 Scope and object
The purpose of this part of IEC 61280 is to describe procedures to measure the optical
attenuation (loss) performance of installed single-mode fibre optic cable plants. It is neither
intended for component testing, nor does it define those elements of an installation which are
to be measured. The document that invokes the procedure of this part of IEC 61280 is to
establish the requirements for installation, maintenance, repair and conformance testing.
The optical attenuation (loss) performance is a specific test associated with IEC 61281-1.
The test procedure of this part of IEC 61280 may be used to measure the optical loss between
any two passively connected points, including end terminations, of a single-mode fibre optic
cable plant. The fibre optic cable plant may consist of fibre optic cables, connectors, mounting
panels, jumper cables, and other passive components, but may not include active components.
2 Normative references
The following normative documents contain provisions which, through reference in this text,
constitute provisions of this part of IEC 61280. For dated references, subsequent amendments
to, or revisions of, any of these publications do not apply. However, parties to agreements
based on this part of IEC 61280 are encouraged to investigate the possibility of applying the
most recent editions of the normative documents indicated below. For undated references, the
latest edition of the normative document referred to applies. Members of IEC and ISO maintain
registers of currently valid International Standards.
IEC 60793-1-4:1995, Optical fibres – Part 1: Generic specification – Section 4: Measuring
methods for transmission and optical characteristics
IEC 61281-1:1999, Fibre optic communication subsystems – Part 1: Generic specification
IEC 61300-3-4:1998, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-4: Examination and measurements – Attenuation
IEC 61300-3-6:1997, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-6: Examinations and measurements – Return loss
IEC 61315:1995, Calibration of fibre optic power meters

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61280-4-2 © IEC:1999 – 11 –
3 Apparatus
Two methods for measuring the installed cable plant losses are described. Method 1 uses
optical power measurement equipment. Method 2 uses an optical time domain reflectometer
(OTDR). If the values obtained by method 1 and method 2 differ from each other, the results of
method 1 shall be accepted as correct. Method 2 is not recommended for cable plants
containing branching devices and/or isolators.
3.1 Method 1 – Optical power meter
3.1.1 Light source
Use an optical source at the wavelength(s) of light used in the system being tested or at
the wavelength(s) specified in the detail specification. Use the launch conditions described in
IEC 60793-1-4, method 793-1-C1A and employ a method to remove high-order propagating
modes. A method to select a mode filter is described in method 793-1-C1A. Use a light source
that is sufficiently stable over the period of the measurement to meet the measurement
precision requirement stated (if any) in the detail specification.
3.1.2 Optical power measurement equipment
Use an optical po
...