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IEC 60793-2-40
Edition 5.0 2021-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Optical fibres –
Part 2-40: Product specifications – Sectional specification for category A4
multimode fibres
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IEC 60793-2-40
Edition 5.0 2021-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Optical fibres –
Part 2-40: Product specifications – Sectional specification for category A4
multimode fibres
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.10 ISBN 978-2-8322-9505-2
– 2 – IEC 60793-2-40:2021 RLV © IEC 2021
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 9
3 Terms and definitions . 10
4 Specifications . 10
4.1 Dimensional requirements . 10
4.2 Mechanical requirements . 11
4.2.1 General . 11
4.2.2 Tensile load test . 12
4.3 Transmission requirements . 13
4.4 Environmental requirements . 13
4.4.1 General . 13
4.4.2 Mechanical environmental requirements . 14
4.4.3 Transmission environmental requirements . 14
Annex A (normative) Family specifications for subcategory A4a multimode fibres . 16
A.1 General . 16
A.2 Dimensional requirements . 16
A.3 Mechanical requirements . 16
A.4 Transmission requirements . 16
A.5 Environmental requirements . 17
Annex B (normative) Family specifications for subcategory A4b multimode fibres . 18
B.1 General . 18
B.2 Dimensional requirements . 18
B.3 Mechanical requirements . 18
B.4 Transmission requirements . 18
B.5 Environmental requirements . 19
Annex C (normative) Family specifications for subcategory A4c multimode fibres . 20
C.1 General . 20
C.2 Dimensional requirements . 20
C.3 Mechanical requirements . 20
C.4 Transmission requirements . 20
C.5 Environmental requirements . 21
Annex D (normative) Family specifications for subcategory A4d multimode fibres . 22
D.1 General . 22
D.2 Dimensional requirements . 22
D.3 Mechanical requirements . 22
D.4 Transmission requirements . 22
D.5 Environmental requirements . 23
Annex E (normative) Family specifications for subcategory A4e multimode fibres . 24
E.1 General . 24
E.2 Dimensional requirements . 24
E.3 Mechanical requirements . 24
E.4 Transmission requirements . 24
E.5 Environmental requirements . 25
Annex F (normative) Family specifications for subcategory A4f multimode fibres . 26
F.1 General .
F.2 Dimensional requirements .
F.3 Mechanical requirements .
F.4 Transmission requirements .
F.5 Environmental requirements .
Annex G (normative) Family specifications for subcategory A4g multimode fibres . 28
G.1 General . 28
G.2 Dimensional requirements . 28
G.3 Mechanical requirements . 28
G.4 Transmission requirements . 28
G.5 Environmental requirements . 29
Annex H (normative) Family specifications for subcategory A4h multimode fibres . 30
H.1 General . 30
H.2 Dimensional requirements . 30
H.3 Mechanical requirements . 30
H.4 Transmission requirements . 30
H.5 Environmental requirements . 31
Annex I (normative) Family specifications for subcategory A4i multimode fibres . 32
I.1 General . 32
I.2 Dimensional requirements . 32
I.3 Mechanical requirements . 32
I.4 Transmission requirements . 32
I.5 Environmental requirements . 33
Annex J (normative) Mode scramblers for subcategory A4a to A4d A4c fibres . 34
J.1 General . 34
J.2 Specification for mode scramblers . 34
Annex K (informative) Additional transmission requirements for subcategory A4a
multimode fibres for wavelengths below 650 nm . 35
K.1 General . 35
K.2 Transmission requirements . 35
Bibliography . 36
Figure 1 – Tensile load versus elongation for a plastic optical fibre . 12
Figure J.1 – Mode scrambler for category A4 fibre . 34
Table 1 – Characteristics and applications of category A4 fibres . 8
Table 2 – Dimensional attributes and measurement methods . 10
Table 3 – Requirements common to all category A4 fibres . 11
Table 4 – Additional attributes required in A4f A4g through A4h A4i family
specifications . 11
Table 5 – Mechanical attributes and test methods . 11
Table 6 – Requirements common to category A4 fibres . 11
Table 7 – Additional attributesrequired in family specification
for subcategory A4f A4g through A4h A4i fibres . 12
Table 8 – Transmission attributes and measurement methods . 13
Table 9 – Attributes required in family specifications . 13
Table 10 – Environmental exposure tests . 14
– 4 – IEC 60793-2-40:2021 RLV © IEC 2021
Table 11 – Attributes measured . 14
Table 12 – Requirement for tensile strength . 14
Table 13 – Requirement for change in attenuation for A4a through A4e fibre . 15
Table 14 – Requirement for change in attenuation for A4f A4g through A4h A4i fibre . 15
Table A.1 – Dimensional requirements specific to A4a fibres . 16
Table A.2 – Mechanical requirements specific to A4a fibres . 16
Table A.3 – Transmission requirements specific to A4a fibres . 17
Ta
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