This part of IEC 62153 specifies the procedures for measuring with triaxial cell the transfer impedance, screening attenuation or the coupling attenuation of connectors, cable assemblies and components, e.g. accessories for analogue and digital transmission systems and equipment for communication networks and cabling (in accordance with the scope of IEC technical committee 46).<\/p>\n
Measurements can be achieved by applying the device under test direct to the triaxial cell or with the tube in tube method in accordance with IEC 62153-4-7.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 4<\/td>\n | CONTENTS <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 1 Scope 2 Normative references <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 3 Terms and definitions Figures Figure 1 \u2013 Definition of ZT <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 4 Physical background 5 Principle of the test methods 5.1 General Tables Table 1 \u2013 IEC\u00a062153-4-x, Metallic communication cable test methods \u2013 Test procedures with triaxial test set-up <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 5.2 Transfer impedance Figure 2 \u2013 Principle depiction of the triaxial cell to measure transfer impedance and screening attenuation Figure 3 \u2013 Principle depiction of the triaxial cell to measure transfer impedance and screening attenuation of assemblies with tube in tube according to IEC\u00a062153-4-7 <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 5.3 Screening attenuation 5.4 Coupling attenuation <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 5.5 Tube in tube method 6 Test procedures 6.1 General 6.2 Triaxial cell 6.3 Cut off frequencies, higher order modes <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 6.4 Test equipment 6.5 Calibration procedure <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 6.6 Test leads and connecting cables to DUT 7 Sample preparation 7.1 Coaxial connector or assembly or quasi-coaxial component 7.2 Balanced or multipin connector or component <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 7.3 Cable assemblies Figure 4 \u2013 Preparation of balanced or multipin connectors for transfer impedance and screening attenuation Figure 5 \u2013 Preparation of balanced or multipin connectors for coupling attenuation measurement <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | 7.4 Other screened devices 8 Transfer impedance (short \u2013 matched) 8.1 General 8.2 Principle block diagram of transfer impedance Figure 6 \u2013 Test set-up (principle) for transfer impedance measurement according to test method B of IEC\u00a062153-4-3 <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 8.3 Measuring procedure 8.4 Evaluation of test results 8.5 Test report <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | 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 <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | 9.4 Measuring with mismatch 9.4.1 General 9.4.2 Evaluaton of test results <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | 9.5 Test report 10 Coupling attenuation 10.1 Procedure 10.2 Expression of results <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | 10.3 Test report 11 Coupling transfer function <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | Annexes Annex A (informative) Principle of the triaxial test procedure Figure A.1 \u2013 Principle test set-up to measure transfer impedance and screening attenuation Figure A.2 \u2013 Equivalent circuit of the principle test set-up in Figure A.1 <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | Annex B (informative) Triaxial cell Figure B.1 \u2013 Principle depiction of the triaxial cell to measure transfer impedance and screening attenuation at HV-assemblies with tube in tube according to IEC\u00a062153-4-7 <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | Figure B.2 \u2013 Example of different designs of triaxial cells <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | Annex C (informative) Cut off frequencies, higher order modes Table C.1 \u2013 Resonance frequencies of different triaxial cells <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | Figure C.1 \u2013 Comparison of the measurements with tube and with triaxial cell of a RG 11 cable with single braid construction, linear scale <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | Figure C.2 \u2013 Comparison of the measurements with tube and with triaxial cell of a cable RG 11 with single braid construction, log scale <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | Annex D (informative) Coupling transfer function Figure D.1 \u2013 Measured coupling transfer function of a braided screen vs. frequency with the triaxial cell <\/td>\n<\/tr>\n | ||||||
| 34<\/td>\n | Annex E (informative) Attenuation versus scattering parameter S21 Figure E.1 \u2013 Measurement with HP8753D of S21 of a 3dB attenuator <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | Figure E.2 \u2013 Measurement with ZVRE of S21 of a 3dB attenuator <\/td>\n<\/tr>\n | ||||||
| 36<\/td>\n | Annex F (informative) Application of a moveable shorting plane F.1 Effect of the measurement length on the measurement cut-off frequency F.2 Details of the movable shorting plane Figure F.1 \u2013 Crosssection of triaxial cell with movable shorting plane <\/td>\n<\/tr>\n | ||||||
| 37<\/td>\n | Figure F.2 \u2013 Crosscut of plane shortening housing and tube-in-tube Figure F.3 \u2013 Detail H of figure F.2: contact between plane and housing <\/td>\n<\/tr>\n | ||||||
| 38<\/td>\n | F.3 Measurement results Figure F.4 \u2013 Detail G of figure F.2: contact between plane and tube-in-tube Figure F.5 \u2013 Compilation of transfer impedance test results with different shorting plane distances <\/td>\n<\/tr>\n | ||||||
| 39<\/td>\n | Annex G (informative) Correction in case the receiver input impedance R is higher than the characteristic impedance of the outer circuit Z2 Figure G.1 \u2013 Example of forward transfer scattering parameter S21 for different impedances in the outer circuit where the receiver input impedance is 50\u2126 <\/td>\n<\/tr>\n | ||||||
| 40<\/td>\n | Figure G.2 \u2013 DUT with uniform cylindrical shape in the centre of the cell <\/td>\n<\/tr>\n | ||||||
| 41<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Metallic Communication Cable test methods – Electromagnetic compatibility (EMC). Test method for measuring transfer impedance and screening attenuation or coupling attenuation with triaxial cell<\/b><\/p>\n |