BS IEC 62153-4-9:2018
$142.49
Metallic communication cable test methods – Electromagnetic compatibility (EMC). Coupling attenuation of screened balanced cables, triaxial method
| Published By | Publication Date | Number of Pages |
| BSI | 2018 | 32 |
IEC 62153-4-9:2018 is also available as /2 which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition. IEC 62153-4-9:2018 applies to metallic communication cables. It specifies a test method for determining the coupling attenuation a C of screened balanced cables. Due to the concentric outer tube, measurements are independent of irregularities on the circumference and external electromagnetic fields. A wide dynamic and frequency range can be applied to test even super screened cables with normal instrumentation from low frequencies up to the limit of defined transversal waves in the outer circuit at approximately 4 GHz. However, when using a balun, the upper frequency is limited by the properties of the balun. Measurements can be performed with standard tube procedure (respectively with standard test head) according to IEC 62153-4-4 or with open tube (open test head) procedure. The procedure described herein to measure the coupling attenuation a C is based on the procedure to measure the screening attenuation a S according to IEC 62153-4-4. This second edition cancels and replaces the first edition published in 2008. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: – two test procedures, open head and standard head procedure; – measuring with balun or with multiport respectively mixed mode VNA; – extension of frequency range up to and above 2 GHz.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 4 | English CONTENTS |
| 6 | FOREWORD |
| 8 | 1 Scope 2 Normative references 3 Terms, definitions and symbols |
| 10 | 4 Principle of the measuring method 4.1 General Figures Figure 1 – Coupling attenuation, principle test set-up with balun and standard tube |
| 11 | 4.2 Procedure A: measuring with standard tube (standard head) Figure 2 – Coupling attenuation, principle test set-up with balun and open head |
| 12 | 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 |
| 13 | 5 Screening parameters 5.1 General 5.2 Transfer impedance 5.3 Screening attenuation Figure 5 – Definition of transfer impedance |
| 14 | 5.4 Unbalance attenuation 5.5 Coupling attenuation |
| 15 | 6 Measurement 6.1 General 6.2 Equipment 6.3 Balun requirements |
| 16 | 6.4 TP-connecting unit requirements 6.5 Sample preparation Tables Table 1 – Balun performance characteristics (1 MHz to 1 GHz) Table 2 – TP-connecting unit performance characteristics(1 MHz to 2 GHz) |
| 17 | 6.6 Procedure 6.7 Test length Figure 6 – Termination of the cable under test with balun feeding |
| 18 | 6.8 Measurement precautions 7 Expression of results 7.1 Procedure A: measuring with a standard head 7.2 Procedure B: measuring with an open head |
| 19 | 8 Test report 9 Requirements Figure 7 – Test set-up to measure atube |
| 20 | 10 Plots of coupling attenuation versus frequency (typical results) Figure 8 – Coupling attenuation Twinax 105, open head procedure Figure 9 – Coupling attenuation Cat 7a, standard head procedure |
| 21 | Figure 10 – Coupling attenuation Cat 8.2, open head procedure |
| 22 | Annex A (normative) Insertion loss of absorber with triaxial set-up Figure A.1 – Insertion loss of absorber with triaxial set-up Figure A.2 – Insertion loss of absorber with triaxial set-up |
| 24 | Annex B (informative) Physical background B.1 Unbalance attenuation au |
| 25 | B.2 Screening attenuation as B.3 Coupling attenuation ac |
| 27 | Annex C (informative) Mixed mode parameters C.1 Definition of mixed mode S-Parameters Figure C.1 – Common two-port network Figure C.2 – Common four port network |
| 28 | Figure C.3 – Physical and logical ports of VNA Figure C.4 – Nomenclature of mixed mode S-Parameters |
| 29 | C.2 Reference impedance of VNA Figure C.5 – Measurement configuration, single ended response Figure C.6 – Measurement configuration, differential mode response |
| 30 | Bibliography |
Related products
-
BS IEC 62153-4-9:2018+A1:2020
Metallic communication cable test methods – Electromagnetic compatibility (EMC). Coupling attenuation of screened balanced cables,…
