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BS IEC 62153-4-9:2018 Metallic communication cable test methods - Electromagnetic compatibility (EMC). Coupling attenuation of screened balanced cables, triaxial method, 2018
- undefined
- English [Go to Page]
- CONTENTS
- FOREWORD
- 1 Scope
- 2 Normative references
- 3 Terms, definitions and symbols
- 4 Principle of the measuring method [Go to Page]
- 4.1 General
- Figures [Go to Page]
- Figure 1 – Coupling attenuation, principle test set-up with balun and standard tube
- 4.2 Procedure A: measuring with standard tube (standard head)
- Figure 2 – Coupling attenuation, principle test set-up with balun and open head
- 4.3 Procedure B: measuring with open head
- Figure 3 – Coupling attenuation, principle set-up with multiport VNA and standard head
- Figure 4 – Coupling attenuation, principle set-up with multiport VNA and open head
- 5 Screening parameters [Go to Page]
- 5.1 General
- 5.2 Transfer impedance
- 5.3 Screening attenuation
- Figure 5 – Definition of transfer impedance
- 5.4 Unbalance attenuation
- 5.5 Coupling attenuation
- 6 Measurement [Go to Page]
- 6.1 General
- 6.2 Equipment
- 6.3 Balun requirements
- 6.4 TP-connecting unit requirements
- 6.5 Sample preparation
- Tables [Go to Page]
- Table 1 – Balun performance characteristics (1 MHz to 1 GHz)
- Table 2 – TP-connecting unit performance characteristics(1 MHz to 2 GHz)
- 6.6 Procedure
- 6.7 Test length
- Figure 6 – Termination of the cable under test with balun feeding
- 6.8 Measurement precautions
- 7 Expression of results [Go to Page]
- 7.1 Procedure A: measuring with a standard head
- 7.2 Procedure B: measuring with an open head
- 8 Test report
- 9 Requirements [Go to Page]
- Figure 7 – Test set-up to measure atube
- 10 Plots of coupling attenuation versus frequency (typical results) [Go to Page]
- Figure 8 – Coupling attenuation Twinax 105, open head procedure
- Figure 9 – Coupling attenuation Cat 7a, standard head procedure
- Figure 10 – Coupling attenuation Cat 8.2, open head procedure
- Annex A (normative) Insertion loss of absorber with triaxial set-up [Go to Page]
- Figure A.1 – Insertion loss of absorber with triaxial set-up
- Figure A.2 – Insertion loss of absorber with triaxial set-up
- Annex B (informative) Physical background [Go to Page]
- B.1 Unbalance attenuation au
- B.2 Screening attenuation as
- B.3 Coupling attenuation ac
- Annex C (informative) Mixed mode parameters [Go to Page]
- C.1 Definition of mixed mode S-Parameters
- Figure C.1 – Common two-port network
- Figure C.2 – Common four port network
- Figure C.3 – Physical and logical ports of VNA
- Figure C.4 – Nomenclature of mixed mode S-Parameters
- C.2 Reference impedance of VNA
- Figure C.5 – Measurement configuration, single ended response
- Figure C.6 – Measurement configuration, differential mode response
- Bibliography [Go to Page]
