| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 2<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
| 4<\/td>\n | CONTENTS <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | INTRODUCTION <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions 3.1 Terms and definitions 3.2 Abbreviated terms <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 4 Extended reach channel specifications 4.1 General 4.2 Channel performance enhancement methods for increased SNR 4.2.1 General <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 4.2.2 Reduced delay and delay skew 4.2.3 Enhanced cable 4.2.4 Enhanced connector 4.3 Example channel specifications with length scaling 4.3.1 General Tables Table 1 \u2013 Enhancement methods for 25 Gbit\/s extended reach <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 4.3.2 Return loss (RL) 4.3.3 Insertion loss (IL) Table 2 \u2013 Formulae for return loss specifications for example 50 m channel Table 3 \u2013 Formulae for insertion loss specifications for example 50 m channel <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 4.3.4 Near-end crosstalk loss (NEXT) 4.3.5 Attenuation to crosstalk loss ratio near-end (ACR-N) Table 4 \u2013 Formulae for pair-to-pair NEXT specifications for example 50 m channel Table 5 \u2013 Formula for PS NEXT specifications for example 50 m channel <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 4.3.6 Attenuation to crosstalk ratio far-end (ACR-F) 4.3.7 Alien (exogenous) crosstalk Table 6 \u2013 Formulae for ACR-F specifications for example 50 m channel Table 7 \u2013 Formulae for PS ACR-F specifications for example 50 m channel <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 4.3.8 DC loop resistance 4.3.9 Propagation delay 4.3.10 Delay skew Table 8 \u2013 Formulae for PS ANEXT specifications for example 50 m channel Table 9 \u2013 Formulae for PS AACR-F specifications for example 50 m channel Table 10 \u2013 Formulae for propagation delay specifications for a 50 m channel Table 11 \u2013 Delay skew specifications for a 50 m channel <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 4.3.11 Unbalance attenuation near end (TCL) and far end (ELTCTL), and coupling attenuation Table 12 \u2013 TCL for example 50 m channel Table 13 \u2013 ELTCTL for example 50 m channel Table 14 \u2013 Coupling attenuation for example 50 m channel for E1 and E2 <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | Annex A (informative)Reduced delay and delay skew A.1 Reduced delay relation to extended reach A.1.1 General A.1.2 Example reduced delay evaluation A.2 Delay relation to insertion loss (IL) A.2.1 General <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | A.2.2 Relation of variable relative permittivity to attenuation A.2.3 Relation of dissipation factor to attenuation: <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | Annex B (informative)Enhanced capacity B.1 Enhanced cabling components B.1.1 General B.1.2 Enhanced cable B.1.3 Enhanced connector B.2 Channel SNR margin-to-capacity B.2.1 General B.2.2 Margin-to-capacity calculation and comparison <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | B.2.3 Margin-to-capacity versus frequency Figure B.1 \u2013 Margin-to-capacity versus frequency for 25 Gbit\/s rate for 50 m reach <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | B.2.4 Margin-to-capacity versus reach Figure B.2 \u2013 Margin-to-capacity versus reach for 25 Gbit\/s at 1 000 MHz frequency <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Information technology. Generic cabling systems for customer premises – Evaluation of balanced cabling in support of 25 Gbit\/s for reach greater than 30 metres<\/b><\/p>\n |