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BS EN IEC 62153-4-15:2021+A1:2024

BS EN IEC 62153-4-15:2021+A1:2024

$198.66

Metallic cables and other passive components test methods – Electromagnetic compatibility (EMC) related test method for measuring transfer impedance and screening attenuation or coupling attenuation with triaxial cell

Published By Publication Date Number of Pages
BSI 2024 52
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PDF Pages PDF Title
2 undefined
5 Annex ZA(normative)Normative references to international publicationswith their corresponding European publications
7 Final version
CONTENTS
10 FOREWORD
12 1 Scope
2 Normative references
13 3 Terms and definitions
Figures
Figure 1 – Definition of ZT
15 4 Physical background
5 Principle of the test methods
5.1 General
Tables
Table 1 – IEC 62153-4 series, Metallic communication cable test methods – Test procedures with triaxial test setup
16 Figure 2 – Principle depiction of the triaxial test setup (tube) to measure transfer impedance and screening attenuation with tube in tube in accordance with IEC 62153-4-7
Figure 3 – Principle depiction of the triaxial cell to measure transfer impedance and screening attenuation of connectors or assemblies with tube in tube in accordance with IEC 62153-4-7
17 5.2 Transfer impedance
5.3 Screening attenuation
5.4 Coupling attenuation
5.5 Tube-in-tube method
6 Test procedures
6.1 General
6.2 Triaxial cell
18 6.3 Cut-off frequencies, higher-order modes
Figure 4 – Rectangular waveguide
19 6.4 Test equipment
6.5 Calibration procedure
20 6.6 Test leads and connecting cables to the DUT
7 Sample preparation
7.1 Coaxial connector or assembly or quasi-coaxial component
7.2 Balanced or multipin connectors or components
21 7.3 Cable assemblies
Figure 5 – Preparation of balanced or multipin connectors for transfer impedance and screening attenuation
Figure 6 – Preparation of balanced or multipin connectors for coupling attenuation measurement
22 7.4 Other screened devices
8 Transfer impedance (short-matched)
8.1 General
8.2 Principle block diagram of transfer impedance
Figure 7 – Test setup (principle) for transfer impedance measurement in accordance with test method B of IEC 62153-4-3
23 8.3 Measuring procedure
8.4 Evaluation of test results
8.5 Test report
24 9 Screening attenuation
9.1 General
9.2 Impedance matching
9.3 Measuring with matched conditions
9.3.1 Procedure
9.3.2 Evaluation of test results
25 9.4 Measuring with mismatch
9.4.1 General
9.4.2 Evaluaton of test results
26 9.5 Test report
10 Coupling attenuation
10.1 General
10.2 Procedure
10.2.1 Coupling attenuation with balun
27 10.2.2 Balunless coupling attenuation
10.3 Expression of results
Figure 8 – Principle test setup for balunless coupling attenuation measurement according to IEC 62153-4-9
28 10.4 Test report
29 Annexes
Annex A (informative) Principle of the triaxial test procedure
A.1 General
Figure A.1 – Principle test setup to measure transfer impedance and screening attenuation
30 A.2 Transfer impedance
A.3 Screening attenuation
Figure A.2 – Equivalent circuit of the principle of the test setup in Figure A.1
31 A.4 Coupling attenuation
Figure A.3 – Coupling attenuation, principle of test setup with balun and standard tube
32 Figure A.4 – Coupling attenuation, principle of setup with multiport VNA and standard head
33 Annex B (informative) Triaxial cell
Figure B.1 – Principle depiction of the triaxial cell to measure transfer impedance and screening attenuation on a connector with tube-in-tube according to IEC 62153-4-7
34 Figure B.2 – Examples of different designs of triaxial cells
35 Annex C (normative) Triaxial absorber cell
C.1 Cut-off frequencies, higher order modes
Figure C.1 – Cavity or rectangular waveguide
36 C.2 Absorber
Figure C.2 – Comparison of the measurements of a RG 214 cable with 40 mm tube and triaxial cells
Figure C.3 – Principle of the triaxial cell with tube in tube and ferrite tiles as absorber
37 Figure C.4 – Comparison of the measurements of an RG 214 with 40 mm tube and triaxial cells with magnetic absorber
Figure C.5 – Examples of magnetic flat absorber
38 C.3 Influence of absorber
Figure C.6 – Setup for correction measurement
Figure C.7 – Correction measurement
39 Annex D (informative) Application of a moveable shorting plane
D.1 Coupling transfer function
Figure D.1 – Measured coupling transfer function of a braided screen versus frequency with the triaxial cell
40 D.2 Effect of the measurement length on the measurement cut-off frequency
D.3 Details of the movable shorting plane
41 Figure D.2 – Cross-section of triaxial cell with movable shorting plane
Figure D.3 – Crosscut of plane shortening housing and tube-in-tube
42 D.4 Measurement results
Figure D.4 – Detail H of Figure D.3: contact between plane and housing
Figure D.5 – Detail G of Figure D.3: contact between plane and tube-in-tube
43 Figure D.6 – Compilation of transfer impedance test results with different shorting plane distances
44 Annex E (informative) Correction in the case that the receiver input impedance R is higher than the characteristic impedance of the outer circuit Z2
E.1 Impedance Z2 lower than the input impedance of the receiver
Figure E.1 – Example of forward transfer scattering parameter S21 for different impedances in the outer circuit where the receiver input impedance is 50 Ω
45 E.2 Correction
Figure E.2 – DUT with uniform cylindrical shape in the centre of the cell
46 Annex F (informative) Test adapter
Figure F.1 – Principle of the test setup to measure transfer impedance and screening or coupling attenuation of connectors
Figure F.2 – Principle of the test setup to measure transfer impedance and screening attenuation on a cable assembly
47 Annex G (informative) Attenuation versus scattering parameter S21
Figure G.1 – Measurement with HP8753D of S21 of a 3 dB attenuator
48 Figure G.2 – Measurement with ZVRE of S21 of a 3 dB attenuator
49 Annex H (normative) Coupling attenuation expressed by mixed mode scattering parameter and an envelope line
H.1 General
H.2 Coupling attenuation expressed by mixed mode scattering parameter
H.3 Envelope line of coupling attenuation
50 Figure H.1 – Example of coupling attenuation with envelope line
51 Bibliography

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