BSI PD IEC/TR 61156-1-5:2013
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Multicore and symmetrical pair/quad cables for digital communications – Correction procedures for the measurement results of return loss and input impedance
| Published By | Publication Date | Number of Pages |
| BSI | 2013 | 26 |
This part of IEC 61156 describes correction procedures for the measurement results of return loss and input impedance.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 4 | CONTENTS |
| 5 | FOREWORD |
| 7 | 1 Scope 2 Normative references 3 Acronyms |
| 8 | 4 Return loss measurements 4.1 General 4.2 Return loss (RL) Figures Figure 1 – Return loss with and without junction reflections |
| 9 | 4.3 Open/short return loss (OSRL) 4.4 Structural return loss (SRL) Figure 2 – Return loss and open/short return loss |
| 10 | 5 Correction procedures 5.1 General Figure 3 – Return loss, open short return loss and structural return loss |
| 11 | 5.2 Parasitic inductance corrected return loss (PRL) Figure 4 – Input impedance (magnitude) and operational return loss up to 2 GHz Figure 5 – Equivalent circuit for the corrective calculation |
| 12 | 5.3 Gated return loss (GRL) |
| 14 | 5.4 Fitted return loss (FRL) Figure 6 – Return loss with gating correction |
| 17 | Figure 7 – Return loss and input impedance before any correction Figure 8 – Return loss and input impedance (with fitting) after fixture correction |
| 18 | Figure 9 – Residual impedance (after fixture correction) and its fitting Figure 10 – Return loss and input impedance after complete correction |
| 19 | Figure 11 – Return loss, with fixture correction vs. without fixture correction Figure 12 – Input impedance (real and imaginary part),with fixture correction vs. without fixture correction |
| 20 | Annex A (informative) Comparison of gated return loss (GRL) with fitted return loss (FRL) Figure A.1 – Return loss, fitting vs. gating correction Figure A.2 – Real part of input impedance, fitting vs. gating correction |
| 21 | Figure A.3 – Imaginary part of input impedance, fitting vs. gating correction |
| 22 | Annex B (informative) Influence of the correction technique on return loss peaks Figure B.1 – Reflection coefficient of a Cat.6 data cable in polar coordinates without and with PRL-correction Figure B.2 – Return loss traces corresponding to Figure B.1 |
| 23 | Figure B.3 – Reflection coefficient of a Cat.6 data cable in polar coordinates without and with PRL-correction Figure B.4 – Return loss traces corresponding to Figure B.3 |
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BSI PD IEC/TR 61156-1-5:2013
Multicore and symmetrical pair/quad cables for digital communications – Correction procedures for the measurement results…
