ISO 19642-11:2023

DRAFT INTERNATIONAL STANDARD
ISO/DIS 19642-11
ISO/TC 22/SC 32 Secretariat: JISC
Voting begins on: Voting terminates on:
2022-07-19 2022-10-11
Road vehicles — Automotive cables —
Part 11:
Dimensions and requirements for coaxial RF cables with a
specified analogue bandwidth up to 6 GHz (20 GHz)
Véhicules routiers — Câbles automobiles —
Partie 11: Dimensions et exigences des câbles RF coaxiaux de bande passante analogique spécifiée jusqu'à
6 GHz (20 GHz)
ICS: 43.040.10
THIS DOCUMENT IS A DRAFT CIRCULATED
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NATIONAL REGULATIONS.
ISO/DIS 19642-11:2022(E)
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PROVIDE SUPPORTING DOCUMENTATION. © ISO 2022

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ISO/DIS 19642-11:2022(E)
DRAFT INTERNATIONAL STANDARD
ISO/DIS 19642-11
ISO/TC 22/SC 32 Secretariat: JISC
Voting begins on: Voting terminates on:
2022-06-16 2022-09-08
Road vehicles — Automotive cables —
Part 11:
Dimensions and requirements for coaxial RF cables with a
specified analogue bandwidth up to 6 GHz (20 GHz)
Véhicules routiers — Câbles automobiles —
Partie 11: Dimensions et exigences des câbles RF coaxiaux de bande passante analogique spécifiée jusqu'à
6 GHz (20 GHz)
ICS: 43.040.10
COPYRIGHT PROTECTED DOCUMENT
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
© ISO 2022
THEREFORE SUBJECT TO CHANGE AND MAY
This document is circulated as received from the committee secretariat.
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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NATIONAL REGULATIONS.
Website: www.iso.org ISO/DIS 19642-11:2022(E)
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ii
  © ISO 2022 – All rights reserved
PROVIDE SUPPORTING DOCUMENTATION. © ISO 2022

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ISO/DIS 19642-11:2022(E)
Contents Page
Foreword . vi
Introduction .vii
1 Scope . 1
2 Normative References .1
3 Terms and definitions . 1
4 Specifications . 2
4.1 General test conditions . 2
4.2 Voltage rating . 2
4.3 Temperature classes . 2
4.4 Cable construction . 2
4.5 Safety concerns . 2
4.5.1 Core . 2
4.5.2 Dielectric core . 3
4.5.3 Screen . 3
4.5.4 Sheath . 3
4.6 Cable designation . 3
4.7 Testing of representative cable constructions . 3
4.8 Reference and requirements for the tests according ISO 19642-2 . 4
4.9 General remark on requirements . 4
5 Requirements for the conductor and dielectric . 4
5.1 General . 4
5.2 Dimensional tests . . 4
5.2.1 Dielectric core outside diameter . 4
5.2.2 Insulation thickness . 4
5.2.3 Conductor diameter . 4
5.2.4 Cross sectional area . . 4
5.2.5 In-process dielectric outside diameter . 4
5.3 Electrical tests . 5
5.3.1 Conductor resistance . . 5
5.3.2 Determination of temperature coefficients . 5
5.3.3 Withstand Voltage . . 5
5.3.4 Withstand voltage after environmental testing . 5
5.3.5 Insulation faults . 5
5.3.6 Insulation volume resistivity . 5
5.4 Mechanical tests . 5
5.4.1 Strip force (A) of dielectric . 5
5.4.2 Abrasion test . 5
5.4.3 Breaking force of the finished cable. 5
5.4.4 Cyclic bending test . 6
5.4.5 Flexibility test . 6
5.5 Environmental tests . 6
5.5.1 Test specimen preparation and winding tests . 6
5.5.2 Long term heat ageing, 3 000 h, at temperature class rating . 6
5.5.3 Short term heat ageing, 240 h at temperature class rating +25 °C . 6
5.5.4 Thermal overload, 6 h at temperature class rating + 50 °C . . 6
5.5.5 Pressure test at high temperature . 6
5.5.6 Shrinkage by heat . 6
5.5.7 Low temperature winding . 6
5.5.8 Cold impact . 6
5.5.9 Temperature and humidity cycling . 6
5.5.10 Resistance to hot water . 6
5.5.11 Resistance to liquid chemicals . 6
iii
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ISO/DIS 19642-11:2022(E)
5.5.12 Durability of cable marking . 6
5.5.13 Stress cracking resistance . 7
5.5.14 Resistance to ozone . 7
5.5.15 Resistance to flame propagation . 7
6 Requirements for the screened and sheathed coaxial RF cable . 7
6.1 General . 7
6.2 Dimensional tests . . 7
6.2.1 Cable outside and inner layer diameters . 7
6.2.2 Ovality of sheath . 7
6.2.3 Thickness of sheath. 7
6.2.4 In-process cable outside diameter . 8
6.2.5 Lay length . 8
6.3 Electrical tests . 8
6.3.1 Electrical continuity . 8
6.3.2 Withstand voltage at final inspection . 8
6.3.3 Screening effectiveness . 8
6.3.4 Sheath fault on screened cables . 9
6.3.5 General information on electrical test setups of unscreened cables . 9
6.3.6 General information on low frequency electrical tests . 9
6.3.7 Resistance unbalance . 10
6.3.8 Capacitance . 10
6.3.9 Inductance . . 10
6.3.10 General information on high (RF) frequency electrical tests . 10
6.3.11 Velocity of Propagation . 10
6.3.12 Characteristic impedance in frequency domain (CIF). 10
6.3.13 Characteristic impedance in time domain (CIT) . 11
6.3.14 Insertion loss, IL. 11
6.3.15 Return loss, RL .12
6.3.16 Unbalance attenuations .12
6.3.17 Near end crosstalk, NEXT .12
6.3.18 Far end crosstalk, FEXT .12
6.3.19 PS alien near end crosstalk, PS ANEXT – exogenous crosstalk .12
6.3.20 PS attenuation to alien crosstalk ratio, far end crosstalk, PS AACR-F -
exogenous crosstalk .12
6.4 Mechanical tests . 12
6.4.1 Strip force (C) of sheath .12
6.4.2 Cyclic bending .12
6.4.3 Flexibility .12
6.4.4 Cyclic bending test for RF cables .12
6.4.5 Dynamic bending tests for RF cables . 13
6.4.6 Test for assessment of minimum bending radius.13
6.4.7 Strip force (B) of screen . 14
6.4.8 Abrasion test on sheath . 14
6.5 Environmental tests . 14
6.5.1 Test specimen preparation and winding tests . 14
6.5.2 Long term heat ageing, 3 000 h at Temperature class rating . 14
6.5.3 Short term heat ageing, 240 h at Temperature class rating + 25 °C .15
6.5.4 Thermal overload, 6 h at Temperature class rating + 50 °C .15
6.5.5 Pressure test at high temperature . 15
6.5.6 Shrinkage of sheath by heat . 15
6.5.7 Low temperature winding . 15
6.5.8 Cold impact . 15
6.5.9 Temperature and humidity cycling . 15
6.5.10 Resistance to liquid chemicals . 16
6.5.11 Durability of sheath marking . 16
6.5.12 Resistance to ozone . 16
6.5.13 Artificial weathering . 16
6.5.14 Resistance to flame propagation . 16
iv
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ISO/DIS 19642-11:2022(E)
7 Test overview tables .16
8 Preferred cable types .20
8.1 Parameter Tables . 20
8.2 Insertion loss IL (tables and diagrams), bending test sequences . 24
8.2.1 CX174a . 25
8.2.2 CX174b . 26
8.2.3 CX174c . 26
8.2.4 CX174d . 27
8.2.5 CX174e .28
8.2.6 CX58a .29
8.2.7 CX58b . 29
8.2.8 CX58c . 30
8.2.9 CX31a .30
8.2.10 CX44a, CX44b . 31
8.2.11 CX44c . 32
8.2.12 CX501a . . 32
8.2.13 CX501b . 33
8.2.14 CX501c . 33
8.2.15 CX502a.34
8.2.16 CX502b .34
8.2.17 CX502c . 35
8.2.18 CX502d . 35
8.2.19 CX751a .36
8.2.20 CX751b . 36
8.2.21 CX751c . 37
v
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ISO/DIS 19642-11:2022(E)
Foreword
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This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 32,
Electrical and electronic components and general system aspects.
A list of all parts in the ISO 19642 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
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