ISO 19642-11:2023

INTERNATIONAL ISO
STANDARD 19642-11
First edition
2023-05
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)
Reference number
© ISO 2023
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Published in Switzerland
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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
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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 radio frequency (RF) electrical tests . 10
6.3.11 Velocity of propagation .
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