ISO/IEC 14763-3:2014/AMD1:2018

ISO/IEC 14763-3
Edition 2.0 2018-08
INTERNATIONAL
STANDARD
colour
inside
AMENDMENT 1
Information technology – Implementation and operation of customer premises
cabling –
Part 3: Testing of optical fibre cabling

ISO/IEC 14763-3:2014-06/AMD1:2018-08(en)

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ISO/IEC 14763-3
Edition 2.0 2018-08
INTERNATIONAL
STANDARD
colour
inside
AMENDMENT 1
Information technology – Implementation and operation of customer premises

cabling –
Part 3: Testing of optical fibre cabling

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 35.200 ISBN 978-2-8322-5976-4

– 2 – ISO/IEC 14763-3:2014/AMD1:2018
© ISO/IEC 2018
FOREWORD
This amendment has been prepared by subcommittee SC 25: Interconnection of information
technology equipment, of ISO/IEC joint technical committee 1: Information technology.
This document has been approved by vote of the member bodies, and the voting results may
be obtained from the address given on the second title page.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
_____________
INTRODUCTION to the amendment
This document contains information for inspecting end faces of the different kinds of installed
fibre optic cabling interfaces and connectors of test cords and recommendations for cleaning
these interfaces, and replaces the normative Annex B and deletes the informative Annex H of
ISO/IEC 14763-3:2014.
Additional information regarding channel and link testing is provided to Annex E.

Introduction
Replace paragraphs 1 to 3, including Figure 1, with the following:
This International Standard has been prepared in support of International Standard series
ISO/IEC 11801.
Figure 1 below shows the inter-relationship between the ISO/IEC 11801 series and other
International Standards and for cabling systems with related standards.

© ISO/IEC 2018
NOTE ISO/IEC 15018 has been replaced by ISO/IEC 11801-4.
Figure 1 – Relationship of related International Standards
ISO/IEC 14763-3 details the inspection and test procedures for optical fibre cabling,
a) designed in accordance with premises cabling standards including the ISO/IEC 11801
series, and
b) installed according to the requirements and recommendations of ISO/IEC 14763-2.
In the NOTE, replace "ISO/IEC 11801" with "ISO/IEC 11801-1".

1 Scope
Replace "ISO/IEC 11801, ISO/IEC 24764, ISO/IEC 24702 and ISO/IEC 15018" with
"the ISO/IEC 11801 series".
2 Normative references
Replace the reference to ISO/IEC 11801 with the following new reference:
ISO/IEC 11801-1, Information technology – Generic cabling for customer premises – Part 1:
General requirements
Replace the reference to IEC 61300-3-35:2009 with the following new reference:
IEC 61300-3-35, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-35: Examinations and measurements – Visual
inspection of fibre optic connectors and fibre-stub transceivers

Clauses 3, 6, 8, 9, 10, E.1, F.1, G.1 and G.2
Replace all instances of "ISO/IEC 11801" in these clauses with "ISO/IEC 11801-1".

– 4 – ISO/IEC 14763-3:2014/AMD1:2018
© ISO/IEC 2018
3.1 Terms and definitions
Add the following new terms and definitions:
3.1.25
defect
surface feature such as pits, chips and loose debris
3.1.26
loose debris
particles and debris on the surface that can be removed by cleaning
3.1.27
pit
permanent non-linear surface damage
3.1.28
scratch
permanent linear surface damage

3.2 Abbreviations
Add the following new abbreviation:
LC LC connector
Replace the existing MPO abbreviation with the following:
MPO Multi-fibre Push On connector (based on rectangular ferrule)

9.1.1.1 General
Add the following new paragraphs after the first paragraph:
According to ISO/IEC 11801-1, a channel does not include the connector on the equipment
cords that interfaces with the network equipment. The optical attenuation limits specified for
network equipment take into account the attenuation associated with the connections of the
equipment to the installed cabling.
The testing of a channel utilizes the customer’s equipment cords at both ends of the channel
and these cords are left in place after testing. The channel test method is normally used to
measure the attenuation of a channel at the time of service implementation or maintenance.
The channel and link test method requires a new reference for any change of connection at
the light source and/or the power meter between tests since the connection between source
and connected cord should never be disturbed after a reference measurement has been
taken.
Inspect and clean when necessary the connector interfaces of the source, the launch test
cord, the tail test cord and substitution test cord.
Allow sufficient time for light source stabilization in accordance with light source
manufacturer’s recommendations.

© ISO/IEC 2018
9.1.1.2 Enhanced three-test-cord attenuation measurement test method of installed
channels
Replace 9.1.1.2 with the following:
9.1.1.2 Channel test method
The procedure for channel testing is as follows.
a) Connect the launch test cord (LTC) to the light source (LS) at one end and to the
equipment (EQP) cord at the other end. Connect equipment cord to the power meter
(PM). Allow sufficient time for the light source stabilization in accordance with light source
manufacturer’s recommendations. (See Figure 8). Since this reference measurement is
carried out with a near end EQP cord, the defect of near end EQP cord may not be found.
When this test method is used, the quality of the near end EQP cord shall comply with the
requirement.
Figure 8 – Connection of LS – LTC – Near end EQP cord – PM for reference setting
b) The reference measurement, P , shall be recorded in watts (W) or decibel-milliwatts
r
(dBm).
c) The near end EQP cord is disconnected from the power meter and the LTC‐EQP cord
combination is reconnected to the fixed cable of the channel under test.
d) At the far end of the channel, connect the far end EQP cord to the power meter, see
Figure 20).
Figure 20 – Connections to channel test for attenuation measurement
e) The power P is measured directly at the far end EQP cord. The measurement, P , shall
1 1
be recorded in watts (W) or decibel-milliwatts (dBm).
f) The attenuation of the channel is:
A = P – P (dB) (1)
r 1
where P and P are expressed in dBm.
1 r
If P and P are expressed in W, then the measured attenuation can be calculated as
1 r
follows:
– 6 – ISO/IEC 14763-3:2014/AMD1:2018
© ISO/IEC 2018
A = –10 lg(P /P ) (dB) (2)
1 r
The channel testing is carried out in one direction only.
For this method, the measurement uncertainties at 95 % confidence level are as follows.
SMF: ± 0,16 dB for fibre length < 2 km.
MMF: ± 0,19 dB when measured attenuation ≤ 1,4 dB.
MMF: ± 0,14 × measured attenuation when measured attenuation > 1,4 dB.
NOTE Measurement uncertainties are determined using IEC TR 61282-14 and representative system data. See
IEC TR 61282-14 for more details.

9.1.1.3 Test method for links using the one-test-cord reference method
Replace the subclause title with the following:
9.1.1.3 Link test method using the one-cord method and enhanced-three-test-cord
reference method
Annex B (normative) Visual inspection criteria for connectors
Replace Annex B with the following:

© ISO/IEC 2018
Annex B
(normative)
Visual inspection and cleaning of optical fibre cabling interfaces
B.1 Specified optical fibre cabling interfaces
The different international cabling standards specify the following optical fibre cabling
interfaces:
a) LC connector simplex and duplex connectors both in multimode and single-mode PC and
single mode APC configuration and adapters;
b) MPO connectors (male and female) in multimode PC and single-mode APC configuration
and adapters.
Since different configurations are possible, Annex B explains the visual inspection criteria
and cleaning recommendations for each configuration of the LC and MPO cabling interface.
B.2 The inspection equipment
The inspection equipment that shall be used is specified in IEC 61300-3-35.
All possible connectors in multimode and single-mode fibre configurations specified in
structured cabling standards shall be inspected with a low-resolution microscope.
Low resolution means that the microscope shall have a field of view of at least 250 microns.
The fibre shall be maximum 50 % of the image on the microscope in the vertical axis.
The capability of the microscope for detecting 2 μm targets and the correct field of view can
be determined by use of, for example, a chrome on glass artefact with 2 μm targets and a
250 μm circle. The user should contact the equipment supplier for such an artefact. Other
artefacts that determine the capability of the microscopes to detect 2 μm defects/scratches
may be used.
There are different types of microscopes available on the market.
Direct viewing microscopes are in general lower cost. Very important with this type of
equipment is that the microscope shall contain a built-in laser safety filter.
The laser filter is to control the energy which is directed into the eye from active sources in
the cabling. When direct viewing is used one should ensure that no laser or equipment with
lasers is active on the cabling. See IEC 60825-2 for regulations regarding laser safety of
optical fibre communication systems.
Video microscopes contain a lens which transfers via a camera the magnified image on a
display. Video microscopes provide more laser safety than direct viewing microscopes.
Low resolution microscopes as specified in IEC 61300-3-35 with automated analysis are
available on the market.
All microscope systems show system-to-system variability and a 100 % match between
inspection results of multiple microscopes according to IEC 61300-3-35 is not achievable at
this moment. This is even the case when microscopes of the same brand and type are
compared.
– 8 – ISO/IEC 14763-3:2014/AMD1:2018
© ISO/IEC 2018
NOTE Some microscopes are available with floodlight (side illumination); these are particular handy when
inspecting MPOs for dirt.
Figure B.1 – Normal illumination of Figure B.2 – Same ferrule with floodlight
male MPO
B.3 Return loss requirements for cabling interfaces
B.3.1 General
Cabling interfaces have 3 major sets of requirements:
a) multimode 20 dB for cylindrical (LC) and rectangular ferrules (MPO);
b) single-mode 35 dB PC for cylindrical ferrules only (LC);
c) single-mode 60 dB APC for cylindrical (LC) and rectangular ferrules (MPO).
For each of these 3 sets, Annex B shows the requirements, and the cleaning
recommendations both as free connector (channel) and connector inside an adapter (link).
B.3.2 Multimode cylindrical and rectangular ferrules (20 dB return loss)
B.3.2.1 General requirements
The following inspection zones and requirements shall be followed when the end faces of
multimode connectors are inspected. The inspection shall be carried out in accordance with
IEC 61300-3-35.
The contact zones of all connector types shall be inspected for dirt and loose particles, for
MPO cabling interfaces the contact zon
...