This test is intended to evaluate the impact of a lightning strike on an OPGW, OPPC or OPAC.

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The short-circuit test is intended to assess the performance of the OPGW (optical ground wire) or OPPC (optical phase conductor) under typical short-circuit, or the impact on the performance of OPAC (optical attached cable) under short-circuit current on the messenger wire.

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This part of IEC 60794, which is a generic specification, covers optical fibre ribbons. Requirements which are described in this part apply to optical fibre ribbon cables for use with telecommunication equipment and devices employing similar techniques, in particular optical fibre cables in IEC 60794-2 for indoor use, in IEC 60794-3 for outdoor use, in IEC 60794-4 for self-supporting overhead use, in IEC 60794-5 for air blown use and in IEC 60794-6 for indoor/outdoor use. The detailed specification can be verified in specifications for each application such as IEC 60794-2 and IEC 60794-3.

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IEC TR 62000:2021 is available as IEC TR 62000:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC TR 62000:2021 provides guidelines concerning single-mode fibre inter-compatibility. A given category of single-mode fibre, for example B-655, can have different implementations by suitably optimising several of the following parameters: mode field diameter (hence effective area), chromatic dispersion coefficient, slope of the chromatic dispersion curve, cable cut-off wavelength. These guidelines indicate the items that are taken into account when planning to connect
- different implementations of single-mode fibres of the same category, for example different implementations of Class B single-mode fibres, and
- single-mode fibres of different sub-categories, for example B-652.B with B-655.C.
This third edition cancels and replaces the second edition published in 2010. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- global uniformity of terminology concerning fibre classes, categories and sub-categories throughout the document;
- updating and aligning to the new naming convention of IEC 60793-2-50 for class B fibre categories and sub-categories;
- updating and aligning with IEC 60793-2-50 as per supported fibre sub-categories;
- additional guidelines concerning combination of fibre parameters: chromatic dispersion and slope, polarization mode dispersion;
- additional guidelines concerning non-linear affects;
- updating of bibliographical references.

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IEC 60794-1-402: 2021 applies to the test intended to evaluate the impact of a lightning strike on an optical ground wire (OPGW), optical phase conductor (OPPC) or optical attached cable (OPAC). This first edition cancels and replaces the first edition of IEC 60794-1-24 published in 2014. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) OPPC cables are included.

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IEC 60794-1-401:2021 applies to the short-circuit test intended to assess the performance of an optical ground wire (OPGW) or optical phase conductor (OPPC) under typical short-circuit, or the impact on the performance of optical attached cable (OPAC) under short-circuit current on the messenger wire. This first edition cancels and replaces the first edition of IEC 60794-1-24 published in 2014. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) OPPC is included;
b) the test methods have been updated.

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IEC 61753-085-02:2021 contains the minimum initial test and measurement requirements and severities which a fibre-optic pigtailed coarse wavelength division multiplexing (CWDM) device satisfies in order to be categorised as meeting the requirements of category C (indoor controlled environment), as defined in Annex A of IEC 61753-1:2018. CWDM is defined in IEC 62074‑1.
This first edition cancels and replaces IEC 61753-085-2 published in 2008. This edition constitutes a technical revision. This edition includes the following specific technical change with respect to IEC 61753-085-2: change of test conditions harmonizing with IEC 61753-1:2018.

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IEC 60794-1-31:2021 is available as IEC 60794-1-31:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60794-1-31:2021 which is a generic specification, covers optical fibre ribbons. Requirements which are described in this part apply to optical fibre ribbon cables for use with telecommunication equipment and devices employing similar techniques, in particular optical fibre cables in IEC 60794-2 for indoor use, in IEC 60794-3 for outdoor use, in IEC 60794-4 for self-supporting overhead use, in IEC 60794-5 for air blown use and in IEC 60794-6 for indoor/outdoor use. The detailed specification can be verified in specifications for each application such as IEC 60794-2 and IEC 60794-3. This second edition cancels and replaces the first edition published in 2018. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- The geometrical requirements for optical fibre ribbon with typically 250 µm coating diameter have been modified and those for the optical fibre ribbon with typically 200 µm coating diameter have been added.
- "Identification by positional identification" and "Identification by ribbon coding and fibre colouring" are moved to a new informative Annex A.

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This part of IEC 60794 specifies a method of verifying that cable metallic elements are
electrically continuous throughout the cable. Electrical continuity is important for bonding and
grounding, toning for location, and other related system issues, and may represent a "goodness
of manufacture" criterion. Typically, the test is one of continuity and carries no resistance or
conductivity requirement. The metallic elements can be tested individually or can be tested as
a total group. Since this latter criterion is frequently the case, all elements are measured as a
group unless specified otherwise.
NOTE It is possible detail specifications allow such elements as strength members to be non-continuous throughout
the cable. This is a special case, and attention is directed to the detail specification.

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This part of IEC 60794, which is a family specification, specifies the optical fibre, cable elements,
cable construction requirements, main requirements for installation and operating conditions,
cable design characteristics and test for OPPC (optical phase conductor), used for carrying
current as well as communication and data transmission. The corresponding environmental
declaration can be built according to IEC TR 62839-1.
The OPPC is a substitute for a conventional phase bare conductor containing optical fibres.
Usually, the fibres are embedded loosely in protective buffer tubes. To fulfil mechanical and
electrical requirements, an armouring of one or more layers with aluminium, aluminium alloy,
and aluminium clad steel, galvanized steel or a mixture of them is helically stranded.

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This part of IEC 60794 is a family specification that covers outdoor optical fibre cables intended
for rugged terrestrial rapid/multiple deployment. These cables, with enhanced mechanical,
environmental and ingress performance can be used wherever a rapid or multiple deployment
is relevant (e.g. mobile broadcast units, emergency rescue services, tactical ground-forces,
outdoor motion-robotics, mining machinery, temporary repair cables for damaged links, etc.).

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This part of IEC 60793 is applicable to category A4 optical multimode fibres and the related
subcategories A4a, A4b, A4c, A4d, A4e, A4g, A4h and A4i. These fibres have a plastic core
and plastic cladding and may have step-index, multi-step index or graded-index profiles. The
fibres are used in information transmission equipment and other applications employing similar
light transmitting techniques, and in fibre optic cables. Table 1 summarizes some of the salient
characteristics and applications of these fibres.In addition to the applications shown in Table 1, other applications for A4 fibres include, but are
not restricted to, the following: support for short reach, high bit-rate systems in telephony,
distribution and local networks, carrying data, voice and/or video services and on-premises
intrabuilding and interbuilding fibre installations, including local area networks (LANs), private
branch exchanges (PBXs), video, various multiplexing uses and miscellaneous related uses,
such as consumer electronics and industrial and mobile networks.
Three types of requirements apply to A4 fibres:
• general requirements, as defined in IEC 60793-2;
• specific requirements common to category A4 multimode fibres covered in this document
and which are given in Clause 4;
particular requirements applicable to individual fibre sub-categories and implementations or
specific applications which are defined in this document, in the normative family
specification annexes.

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This part of IEC 61280 specifies two main methods for the determination of low BER values by
making accelerated measurements. These include the variable decision threshold method
(Clause 5) and the variable optical threshold method (Clause 6). In addition, a third method,
the sinusoidal interference method, is described in Annex B.

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IEC 60794-1-403:2021 specifies a method of verifying that cable metallic elements are electrically continuous throughout the cable. Electrical continuity is important for bonding and grounding, toning for location, and other related system issues, and may represent a "goodness of manufacture" criterion. Typically, the test is one of continuity and carries no resistance or conductivity requirement. The metallic elements can be tested individually or can be tested as a total group. Since this latter criterion is frequently the case, all elements are measured as a group unless specified otherwise.
NOTE It is possible detail specifications allow such elements as strength members to be non-continuous throughout the cable. This is a special case, and attention is directed to the detail specification.

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This part of IEC 60793 establishes uniform requirements for the mechanical characteristic: fibre
curl or latent curvature in uncoated optical fibres, i.e. a specified length of the fibre has been
stripped from coating. Fibre curl has been identified as an important parameter for minimizing
the splice loss of optical fibres when using passive alignment fusion splicers or active alignment
mass fusion splicers.
Two methods are recognized for the measurement of fibre curl, in uncoated optical fibres:
• method A: side view microscopy;
• method B: laser beam scattering.
Both methods measure the radius of curvature of an uncoated fibre by determining the amount
of deflection that occurs as an unsupported fibre end is rotated about the fibre's axis. Method A
uses visual or digital video methods to determine the deflection of the fibre while method B uses
a line sensor to measure the maximum deflection of one laser beam relative to a reference laser
beam.
By measuring the deflection behaviour of the fibre as it is rotated about its axis and
understanding the geometry of the measuring device, the fibre's radius of curvature can be
calculated from simple circular models, the derivation of which are given in Annex C.
Both methods are applicable to type B optical fibres as described in IEC 60793 (all parts).
Method A is the reference test method, used to resolve disputes.

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This part of IEC 60794 defines test procedures to measure the shrinkage of the sheath due to
thermal exposure of cables.
A first test method, F11A, is included for cables where the fibre or buffered fibre and the sheath
of the cable are intended to be fully terminated into a connector at one or both cable ends.
A second test method, F11B, is included in this document for sheath shrinkage testing for
general purpose.
See IEC 60794-1-2 for a reference guide to test methods of all types and for general
requirements.

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This part of IEC 60794 is a detailed specification for duct and directly buried optical
telecommunication cables for use in premises cabling to ensure compatibility with
ISO/IEC 11801-1. This document's requirements ensure that the ISO/IEC 11801-1 models work
for generic cabling and system performances. Values in this document support these models.
The requirements of the family specification IEC 60794-3-10 are applicable to cables covered
by this document. Particular requirements detailed in Clause 5 either define a specific option
relative to the requirements of IEC 60794-3-10 or define additional requirements.

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IEC 60794-3-70:2021 is available as IEC 60794-3-70:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60794-3-70:2021 covers outdoor optical fibre cables intended for rugged terrestrial rapid/multiple deployment. These cables, with enhanced mechanical, environmental and ingress performance can be used wherever a rapid or multiple deployment is relevant (e.g. mobile broadcast units, emergency rescue services, tactical ground-forces, outdoor motion-robotics, mining machinery, temporary repair cables for damaged links, etc.). This second edition cancels and replaces the first edition published in 2016. It constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
- incorporation of the new classification system for optical fibre categories, sub-categories in IEC 60793-2-10;
- incorporation of the new classification system for optical fibre categories, sub-categories and models in IEC 60793-2-50;
- updating of cabled fibre performance categories in alignment with ISO/IEC 11801-1;
- updating of bibliographical references.

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IEC 60794-4-30:2021 specifies the optical fibre, cable elements, cable construction requirements, main requirements for installation and operating conditions, cable design characteristics and test for OPPC (optical phase conductor), used for carrying current as well as communication and data transmission. The corresponding environmental declaration can be built according to IEC TR 62839-1. The OPPC is a substitute for a conventional phase bare conductor containing optical fibres. Usually, the fibres are embedded loosely in protective buffer tubes. To fulfil mechanical and electrical requirements, an armouring of one or more layers with aluminium, aluminium alloy, and aluminium clad steel, galvanized steel or a mixture of them is helically stranded.

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This part of IEC 60794-1 applies to optical fibre cables for use with telecommunications
equipment and devices employing similar techniques, and to cables having a combination of
both optical fibres and electrical conductors.
An objective of this document is to define general requirements and methodology guidance
applicable to all of the cable test methods of IEC 60794-1 (all parts).
A second objective of this document is to provide the end user with an overview of the different
test methods contained in the different parts of the IEC 60794-1 series, numbered -Xnn.
Table 1 shows the different parts.
These documents define test procedures to be used in establishing uniform requirements for
the geometrical, transmission, material, mechanical, ageing (environmental exposure) and
climatic properties of optical fibre cables, and electrical requirements where appropriate.
Throughout the documents, the wording "optical cable" can also include optical fibre units,
microduct fibre units, etc.
The secondary objective of this document is to provide the end user with useful guidance when
testing optical fibre cables.

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IEC 61280-2-8:2021 is available as IEC 61280-2-8:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 61280-2-8:2021 specifies two main methods for the determination of low BER values by making accelerated measurements. These include the variable decision threshold method (Clause 5) and the variable optical threshold method (Clause 6). In addition, a third method, the sinusoidal interference method, is described in Annex B. This second edition cancels and replaces the first edition published in 2003. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- correction of errors in Formula (8) in 5.5.2 and in a related formula in 5.5.3;
- correction of errors in the references to clauses, subclauses, figures, procedures, and in the Bibliography;
- alignment of the terms and definitions in 3.1 with those in IEC 61281-1.

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IEC 60793-2-40:2021 is available as IEC 60793-2-40:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60793-2-40:2021 is applicable to category A4 optical multimode fibres and the related subcategories A4a, A4b, A4c, A4d, A4e, A4g, A4h and A4i. These fibres have a plastic core and plastic cladding and may have step-index, multi-step index or graded-index profiles. The fibres are used in information transmission equipment and other applications employing similar light transmitting techniques, and in fibre optic cables. Table 1 summarizes some of the salient characteristics and applications of these fibres. This fifth edition cancels and replaces the fourth edition published in 2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- revision of NA range of A4a.2;
- addition of a new subcategory A4i;
- deletion of the subcategory A4f and of Annex F.

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IEC 60794-1-211:2021 defines test procedures to measure the shrinkage of the sheath due to thermal exposure of cables. A first test method, F11A, is included for cables where the fibre or buffered fibre and the sheath of the cable are intended to be fully terminated into a connector at one or both cable ends. A second test method, F11B, is included in this document for sheath shrinkage testing for general purpose. See IEC 60794-1-2 for a reference guide to test methods of all types and for general requirements.

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    25 pages
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IEC TR 62959:2021 which is a Technical Report, provides information on cable shrinkage characterisation of optical fibre cables that consist of standard glass optical fibres for telecommunication application. The characterisation is directed to the effects of cable shrinkage or cable element shrinkage on the termination of cables. Shrinkage can or cannot be a concern depending on the method of termination. Examples of different cable termination cases are included and described. Tests for the evaluation of cable shrinkage are recommended that can be used as indicators, and shrinkage classification by several grades are given.

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IEC 60793-1-34:2021 is available as IEC 60793-1-34:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60793-1-34:2021 establishes uniform requirements for the mechanical characteristic: fibre curl or latent curvature in uncoated optical fibres, i.e. a specified length of the fibre has been stripped from coating. Fibre curl has been identified as an important parameter for minimizing the splice loss of optical fibres when using passive alignment fusion splicers or active alignment mass fusion splicers.Two methods are recognized for the measurement of fibre curl, in uncoated optical fibres:
- method A: side view microscopy;
- method B: laser beam scattering.
Both methods measure the radius of curvature of an uncoated fibre by determining the amount of deflection that occurs as an unsupported fibre end is rotated about the fibre's axis. Method A uses visual or digital video methods to determine the deflection of the fibre while method B uses a line sensor to measure the maximum deflection of one laser beam relative to a reference laser beam. By measuring the deflection behaviour of the fibre as it is rotated about its axis and understanding the geometry of the measuring device, the fibre's radius of curvature can be calculated from simple circular models, the derivation of which are given in Annex C. Both methods are applicable to type B optical fibres as described in IEC 60793 (all parts). Method A is the reference test method, used to resolve disputes. This third edition cancels and replaces the second edition published in 2006. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- modification of several derivation equations for laser scattering;
- change of angular increment from 10° to 30° to 10° to 45°;
- change of Annex B from informative to normative.

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IEC 60794-3-12:2021 is available as IEC 60794-3-12:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60794-3-12:2021 is a detailed specification for duct and directly buried optical telecommunication cables for use in premises cabling to ensure compatibility with ISO/IEC 11801-1. This document's requirements ensure that the ISO/IEC 11801-1 models work for generic cabling and system performances. Values in this document support these models. The requirements of the family specification IEC 60794-3-10 are applicable to cables covered by this document. Particular requirements detailed in Clause 5 either define a specific option relative to the requirements of IEC 60794-3-10 or define additional requirements. This third edition cancels and replaces the second edition published in 2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- addition of references to ISO/IEC 11801-1;
- removal of references to ISO/IEC 24702;
- incorporation of the OM5 cabled fibre performance category;
- incorporation of the OS1a cabled fibre performance category;
- cabled fibre performance categories OM1, OM2 and OS1 are no longer normative, and are retained for information.

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IEC 60794-1-2:2021 is available as IEC 60794-1-2:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60794-1-2:2021 applies to optical fibre cables for use with telecommunications equipment and devices employing similar techniques, and to cables having a combination of both optical fibres and electrical conductors. An objective of this document is to define general requirements and methodology guidance applicable to all of the cable test methods of IEC 60794-1 (all parts). A second objective of this document is to provide the end user with an overview of the different test methods contained in the different parts of the IEC 60794-1 series. This fifth edition cancels and replaces the fourth edition published in 2017. This edition constitutes a technical revision. This edition includes the following significant technical change with respect to the previous edition:
- addition of cross-reference tables listing the new test method numbers and the previous test method numbers.

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This standard specifies the procedure for testing the resistance to vertical flame propagation for a single vertical electrical insulated conductor or cable, or optical fibre cable, under fire conditions.

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This part of IEC 60794 is a family specification covering optical fibre outdoor cables which are
flame retardant and thus also applicable to indoor environments. These cables generally
possess the characteristics associated with outdoor cable designs having similar thermal and
mechanical robustness that makes them suitable for use in the outside plant, while
simultaneously exhibiting the fire performance required in indoor premises. A typical application
is for example the extension of a "shorter length" of an outdoor cable into the building.

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This part of IEC 60794 is a sectional specification covering general features of optical fibre
cables applicable to outdoor as well as indoor environments, called "indoor-outdoor cables".
Indoor-outdoor cables are deployed in outside plant environments as well as in premises thus
fulfilling outdoor as well as indoor requirements. Typical application spaces are, for example,
extension of a duct cable into a building or using this design for centralized cabling in the central
office, the premises or local area network where the same cable is used for the entire length of
the cabling link including both the indoor as well as the outdoor portions.
Cables which generally possess the characteristics associated with outdoor cable designs
having the thermal and mechanical robustness that makes them suitable for use in the outside
plant, while simultaneously being relatively flexible, compact and lightweight and exhibiting the
fire performance required in indoor premises are specified in IEC 60794-6-10.
Flame retardant outdoor cables as specified in IEC 60794-6-20 are used when most of the cable
length is deployed as an outdoor cable with a part of its length deployed indoors. The cable
design can be derived from a typical outdoor cable design according to the product
specifications described in IEC 60794-3. The specific performance related to bend radii
according to the installation situation and fire performance according to the regional legislation
mainly requires the appropriate selection of the jacket material in combination with other
material and/or design considerations. Because of the use in buildings with tighter space
restrictions, higher flexibility of the cable is often required for the installation. Often, smaller
diameter cables are preferred.
Indoor cables which are weatherised as specified in (IEC 60794-6-30) are used when an indoor
cable is used outdoors over a short distance (few meters), for example when the network access
point (NAP) is very close to the building. The indoor-outdoor fibre optical cable design can be
derived from an indoor design (see IEC 60794-2 and IEC TR 62901 for typical applications)
with specific outdoor performance features added. Critical parameters are UV stability, and
resistance against exposure to humidity.

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This part of IEC 60794 is a family specification covering optical fibre indoor cables that are
deployed in short length (≤ 10 m) outdoor environments. These cables generally possess the
characteristics associated with indoor cable designs having the appropriate fire performance
and flexibility that makes them suitable for use in premises. Because of its predicted use
outdoors, stability against environmental attack, for example UV radiation and humidity (see
IEC 60794-6:2020, Table 1), is important. Typical application spaces include the extension of
a short length of indoor cable outside the building such as to a NAP mounted outside the
building at the house wall.

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This part of IEC 60794 is a family specification covering features of optical fibre cables
applicable to outdoor as well as indoor environments, called "universal indoor-outdoor cables".
These cables generally possess the characteristics associated with outdoor cable designs
(according to IEC 60794-3, however typically less stringent, and typically "non armoured")
having the thermal and mechanical robustness that makes them suitable for use in the outside
plant, while simultaneously being flexible enough, compact and lightweight and exhibiting the
fire performance required in indoor premises. A typical application is for example the centralized
cabling in central office and the premises or local area network where the same cable design
is used for the entire length of the cabling link including both the indoor as well as the outdoor
portions.

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IEC 60794-6-10:2020 is a family specification covering features of optical fibre cables applicable to outdoor as well as indoor environments, called "universal indoor-outdoor cables". These cables generally possess the characteristics associated with outdoor cable designs (according to IEC 60794-3, however typically less stringent, and typically "non armoured") having the thermal and mechanical robustness that makes them suitable for use in the outside plant, while simultaneously being flexible enough, compact and lightweight and exhibiting the fire performance required in indoor premises. A typical application is for example the centralized cabling in central office and the premises or local area network where the same cable design is used for the entire length of the cabling link including both the indoor as well as the outdoor portions.

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    43 pages
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IEC 60794-6-20:2020 is a family specification covering optical fibre outdoor cables which are flame retardant and thus also applicable to indoor environments. These cables generally possess the characteristics associated with outdoor cable designs having similar thermal and mechanical robustness that makes them suitable for use in the outside plant, while simultaneously exhibiting the fire performance required in indoor premises. A typical application is for example the extension of a "shorter length" of an outdoor cable into the building.

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    42 pages
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IEC 60794-6:2020 is a sectional specification covering general features of optical fibre cables applicable to outdoor as well as indoor environments, called "indoor-outdoor cables". Indoor-outdoor cables are deployed in outside plant environments as well as in premises thus fulfilling outdoor as well as indoor requirements. Typical application spaces are, for example, extension of a duct cable into a building or using this design for centralized cabling in the central office, the premises or local area network where the same cable is used for the entire length of the cabling link including both the indoor as well as the outdoor portions. Cables which generally possess the characteristics associated with outdoor cable designs having the thermal and mechanical robustness that makes them suitable for use in the outside plant, while simultaneously being relatively flexible, compact and lightweight and exhibiting the fire performance required in indoor premises are specified in IEC 60794-6-10. Flame retardant outdoor cables as specified in IEC 60794-6-20 are used when most of the cable length is deployed as an outdoor cable with a part of its length deployed indoors. The cable design can be derived from a typical outdoor cable design according to the product specifications described in IEC 60794-3. The specific performance related to bend radii according to the installation situation and fire performance according to the regional legislation mainly requires the appropriate selection of the jacket material in combination with other material and/or design considerations. Because of the use in buildings with tighter space restrictions, higher flexibility of the cable is often required for the installation. Often, smaller diameter cables are preferred. Indoor cables which are weatherised as specified in (IEC 60794-6-30) are used when an indoor cable is used outdoors over a short distance (few meters), for example when the network access point (NAP) is very close to the building. The indoor-outdoor fibre optical cable design can be derived from an indoor design (see IEC 60794-2 and IEC TR 62901 for typical applications) with specific outdoor performance features added. Critical parameters are UV stability, and resistance against exposure to humidity.

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IEC 60794-6-30:2020 is a family specification covering optical fibre indoor cables that are deployed in short length (≤ 10 m) outdoor environments. These cables generally possess the characteristics associated with indoor cable designs having the appropriate fire performance and flexibility that makes them suitable for use in premises. Because of its predicted use outdoors, stability against environmental attack, for example UV radiation and humidity (see IEC 60794-6:2020, Table 1), is important. Typical application spaces include the extension of a short length of indoor cable outside the building such as to a NAP mounted outside the building at the house wall.

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IEC TR 62362:2020 is available as IEC TR 62362:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC/TR 62362: 2020 which is a technical report, provides information on the specification of optical fibre cables with respect to the mechanical, ingress, climatic and chemical or electromagnetic characteristics (MICE) as classified in ISO/IEC 11801-1. In this classification system, each letter of the four initials of the acronym are subscripted with a value from one to three to indicate different severities. The current attributes and severities are found in Annex A. This second edition cancels and replaces the first edition published in 2010. It constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- replacement of references and information from ISO/IEC 24702 and ISO/IEC 11801 with ISO/IEC 11801-1;
- update of the MICE table;
- update of the current optical fibre designations of IEC 60793-2-10 and IEC 60793-2-50.

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This part of IEC 60794-1 defines test procedures to be used in establishing uniform
requirements for the environmental performance of
• optical fibre cables for use with telecommunication equipment and devices employing similar
techniques, and
• cables having a combination of both optical fibres and electrical conductors.
Throughout this document, the wording "optical cable" can also include optical fibre units,
microduct fibre units, etc.
This document defines a test standard to determine the ability of a cable to withstand the effects
of freezing water that can immediately surround the optical fibre cable sheath by observing any
changes in the physical appearance of the sheath, or in the measured cable optical attenuation.
Method F15A is a test standard to simulate freezing of the medium surrounding a buried cable,
as in wet earth or water. Method F15A is moved from method F15 in IEC 60794-1-22:2017
without any technical changes.
Method F15B is a test standard to simulate freezing of the medium surrounding an outside cable
in a rigid conduit (duct) which is made of rigid material, for example steel. Method F15B includes
the solution to prevent the cable from being crushed when experiencing freezing conditions in
a rigid conduit (duct) which are pressure absorber pads and any other suggested means of
cable protection.
A reference guide to test methods of all types as well as general requirements can be found in
IEC 60794-1-2.

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This part of IEC 62614 describes the launch condition requirements used for measuring
multimode attenuation in passive components and in installed cable plants.
In this document, the fibre types that are addressed include category A1-OMx, where x = 2, 3,
4 and 5 (50 μm/125 μm), and A1-OM1 (62,5 μm/125 μm) multimode fibres, as specified in
IEC 60793-2-10. The nominal test wavelengths detailed are 850 nm and 1 300 nm. This
document can be suitable for multimode attenuation measurements for other multimode
categories and/or other wavelengths, but the source condition for other categories and
wavelengths are not defined here.
The purpose of these requirements is as follows:
• to ensure consistency of field measurements when different types of test equipment are
used;
• to ensure consistency of factory measurements when different types of test equipment are
used;
• to ensure consistency of field measurements when compared with factory measurements.
This document describes launch condition requirements for optical attenuation using sources
with a controlled encircled flux (EF).

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IEC TR 62349:2014(E) applies to polarization-maintaining (PM) optical fibres. The object of this report is to define test procedures to be used in establishing uniform requirements for the geometrical and transmission properties of PM fibres. This second edition cancels and replaces the first edition published in 2005. It constitutes a technical revision. In this edition, guidance of measurement methods and test procedures for dimensional characteristics, cut-off wavelength, mode field diameter and beat length of polarization-maintaining optical fibres have been added. Thus, the title of the technical report is changed to "Guidance of measurement methods and test procedures - Basic tests for polarization-maintaining optical fibres" from "Guidance for polarization crosstalk measurement of optical fibre". Keywords: polarization-maintaining (PM) optical fibres, geometrical and transmission properties

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IEC 60794-1-215:2020 defines test procedures to be used in establishing uniform requirements for the environmental performance of
- optical fibre cables for use with telecommunication equipment and devices employing similar techniques, and
- cables having a combination of both optical fibres and electrical conductors.
Throughout this document, the wording "optical cable" can also include optical fibre units, microduct fibre units, etc. This document defines a test standard to determine the ability of a cable to withstand the effects of freezing water that can immediately surround the optical fibre cable sheath by observing any changes in the physical appearance of the sheath, or in the measured cable optical attenuation. Method F15A is a test standard to simulate freezing of the medium surrounding a buried cable, as in wet earth or water. Method F15A is moved from method F15 in IEC 60794-1-22:2017 without any technical changes. Method F15B is a test standard to simulate freezing of the medium surrounding an outside cable in a rigid conduit (duct) which is made of rigid material, for example steel. Method F15B includes the solution to prevent the cable from being crushed when experiencing freezing conditions in a rigid conduit (duct) which are pressure absorber pads and any other suggested means of cable protection. A reference guide to test methods of all types as well as general requirements can be found in IEC 60794-1-2.

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This part of IEC 61753 contains the minimum test and measurement requirements and
severities which a fibre optic isolator as specified by IEC 61202-1 satisfies in order to be
categorized as meeting the requirements of isolators used in controlled environments as
specified in IEC 61753-1. The requirements cover single-mode pigtailed style polarization
independent isolators for category C used in controlled environments.

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