IEC 62153-4-3:2013

IEC 62153-4-3 ®
Edition 2.0 2013-10
INTERNATIONAL
STANDARD
colour
inside
Metallic communication cable test methods –
Part 4-3: Electromagnetic compatibility (EMC) – Surface transfer impedance –
Triaxial method
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IEC 62153-4-3 ®
Edition 2.0 2013-10
INTERNATIONAL
STANDARD
colour
inside
Metallic communication cable test methods –

Part 4-3: Electromagnetic compatibility (EMC) – Surface transfer impedance –

Triaxial method
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
X
ICS 33.120.10; 33.100 ISBN 978-2-8322-1179-3

– 2 – 62153-4-3 © IEC:2013(E)
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 8
4 Principle . 11
5 Test methods. 11
5.1 General . 11
5.2 Test equipment . 11
5.3 Calibration procedure . 12
5.4 Sample preparation . 12
5.5 Test set-up . 13
5.6 Test configurations . 14
5.6.1 General . 14
5.6.2 Vector network analyser with S-parameter test set . 14
5.6.3 (Vector) network analyser with power splitter . 15
5.6.4 Separate signal generator and receiver . 15
5.7 Expression of test results . 16
5.7.1 Expression . 16
5.7.2 Test report . 16
6 Test method A: Matched inner circuit with damping resistor in outer circuit . 16
6.1 General . 16
6.2 Damping resistor R . 16
6.3 Cut-off frequency . 17
6.4 Block diagram of the set-up . 17
6.5 Measuring procedure . 17
6.6 Evaluation of test results . 18
7 Test method B: Inner circuit with load resistor and outer circuit without damping
resistor . 18
7.1 General . 18
7.2 Cut-off frequency . 18
7.3 Block diagram of the set-up . 18
7.4 Measuring procedure . 19
7.5 Evaluation of test results . 20
8 Test method C: (Mismatched)-Short-Short without damping resistor . 20
8.1 General . 20
8.2 Cut-off frequency . 20
8.3 Block diagram of the set-up . 21
8.4 Measuring procedure . 21
8.5 Evaluation of test results . 21
Annex A (normative) Determination of the impedance of the inner circuit . 23
Annex B (normative) Impedance matching adapter . 24
Annex C (normative) Sample preparation for “milked on braid” method . 28
Annex D (informative) Triaxial test set-up depicted as a T-circuit . 35
Annex E (informative) Cut-off frequency of the triaxial set-up for the measurement of
the transfer impedance . 36

62153-4-3 © IEC:2013(E) – 3 –
Annex F (informative) Impact of ground loops on low frequency measurements . 42
Bibliography . 45

Figure 1 – Definition of Z . 9
T
Figure 2 – Definition of Z . 10
F
Figure 3 – Preparation of test sample for coaxial cables . 13
Figure 4 – Preparation of test sample for symmetrical cables . 13
Figure 5 – Connection to the tube . 14
Figure 6 – Test set-up using a vector network analyser with the S-parameter test set . 14
Figure 7 – 50 Ω power splitter, 2- and 3-resistor types . 15
Figure 8 – Test set-up using a network analyser (NA) and a power splitter . 15
Figure 9 – Test set-up using a signal generator and a receiver . 15
Figure 10 – Test set-up using a signal generator and a receiver with feeding resistor . 16
Figure 11 – Test set-up (principle) . 17
Figure 12 – Test set-up (principle) . 19
Figure 13 – Test set-up (principle) . 21
Figure B.1 – Impedance matching for Z < Z . 24
2 1
Figure B.2 – Impedance matching for Z > Z . 25
2 1
Figure B.3 – Coaxial impedance matching adapters (50 Ω to 75 Ω) . 26
Figure B.4 – Attenuation of 50 Ω to 75 Ω impedance matching adapter . 27
Figure C.1 – Coaxial cables: preparation of cable end “A” (1 of 2) . 29
Figure C.2 – Coaxial cables: preparation of cable end “B” . 31
Figure C.3 – Symmetrical cables: preparation of cable end “A” (1 of 2) . 32
Figure C.4 – Symmetrical cables: preparation of cable end “B” . 33
Figure C.5 – Typical resonance of end “A” . 34
Figure C.6 – Typical resonance of end “B” . 34
Figure D.1 – Triaxial set-up depicted as a T-circuit . 35
Figure E.1 – Equivalent circuit of the triaxial set-up . 36
Figure E.2 – Frequency response of the triaxial set-up for different load conditions . 38
Figure E.3 – Measurement of S of the outer circuit (tube) having a length of 50 cm . 40
Figure F.1 – Triaxial test set-up . 42
Figure F.2 – Equivalent circuits of the triaxial set-up . 43
Figure F.3 – Example showing the impact of the measurement error . 44

– 4 – 62153-4-3 © IEC:2013(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
METALLIC COMMUNICATION CABLE
TEST METHODS –
Part 4-3: Electromagnetic compatibility (EMC) –
Surface transfer impedance – Triaxial method

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