Standards and other deliverables of the EN 50083 and EN 60728 series deal with cable networks including equipment and associated methods of measurement for headend reception, processing and distribution of television and sound signals and for processing, interfacing and transmitting all kinds of data signals for interactive services using all applicable transmission media. These signals are typically transmitted in networks by frequency-multiplexing techniques.<\/p>\n
This includes for instance:<\/p>\n
regional and local broadband cable networks,<\/p>\n<\/li>\n
extended satellite and terrestrial television distribution networks and systems,<\/p>\n<\/li>\n
individual satellite and terrestrial television receiving systems<\/p>\n<\/li>\n
and all kinds of equipment, systems and installations used in such cable networks, distribution and receiving systems.<\/p>\n<\/li>\n<\/ul>\n
The extent of this standardization work is from the antennas and\/or special signal source inputs to the headend or other interface points to the network up to the terminal input of the customer premises equipment.<\/p>\n
The standardization work will consider coexistence with users of the RF spectrum in wired and wireless transmission systems.<\/p>\n
The standardization of any user terminals (i.e. tuners, receivers, decoders, multimedia terminals etc.) as well as of any coaxial, balanced and optical cables and accessories thereof is excluded.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 8<\/td>\n | 1 Scope 1.1 General 1.2 Specific scope of this Technical Report 2 Normative references <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 3 Terms, definitions, symbols and abbreviations 3.1 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 3.2 Symbols <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 3.3 Abbreviations <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 4 Network architecture 4.1 HFC architecture <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 4.2 Upgrade alternatives 4.2.1 Introduction <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | 4.2.2 Re-arrange the feeds <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | 4.2.3 Frequency stacking <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | 4.2.4 Multiple fibres <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | 4.2.5 Wavelength division multiplexing (WDM) 4.2.6 Digital return technology <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | 4.3 Active or passive return path 4.4 In building network 4.5 In home network <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | 5 Network design 5.1 Considerations 5.2 Return path loss, path loss difference and return path slope 5.2.1 Return path loss 5.2.1.1 Introduction and overview <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | 5.2.1.2 Types of attenuation 5.2.1.3 Practical example <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | 5.2.2 Return path loss difference and return path slope 5.2.2.1 Introduction 5.2.2.2 Calculation of the change of return path slope with temperature <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | 5.3 Noise and nonlinearity, optimizing signal levels 5.3.1 Passive return paths 5.3.2 Amplification on the return path <\/td>\n<\/tr>\n | ||||||
| 34<\/td>\n | 5.3.3 Estimating return path carrier to noise ratio 5.3.3.1 Introduction 5.3.3.2 Calculation of RF section 5.3.3.3 Calculation of optical section <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | 5.3.3.4 Cumulative return path carrier to noise ratio 5.4 Isolation between outlets 5.5 Equalization and filtering in return paths 5.5.1 Introduction <\/td>\n<\/tr>\n | ||||||
| 36<\/td>\n | 5.5.2 Purpose of ISF filters 5.5.2.1 Ingress suppression 5.5.2.2 Return path equalization 5.5.2.3 Suppression of spurious signals of modems <\/td>\n<\/tr>\n | ||||||
| 37<\/td>\n | 5.5.2.4 Distinction between ingress sources 5.5.3 Calculation of the ISF value 5.5.4 Quick method <\/td>\n<\/tr>\n | ||||||
| 38<\/td>\n | 5.5.5 Dynamic ingress blocking 6 Channel planning 6.1 Purpose of this section 6.2 Introduction 6.3 Summary <\/td>\n<\/tr>\n | ||||||
| 39<\/td>\n | 6.4 Considerations for channel planning 6.4.1 Introduction 6.4.1.1 Adjacent channel operation 6.4.1.2 Usable bandwidth 6.4.2 Sources of ingress 6.4.2.1 Introduction 6.4.2.2 Sources of narrowband ingress 6.4.2.3 HF propagation 6.4.2.4 Users of the HF radio spectrum <\/td>\n<\/tr>\n | ||||||
| 40<\/td>\n | 6.4.2.5 Broadcasting 6.4.2.6 Amateur radio and CB radio <\/td>\n<\/tr>\n | ||||||
| 41<\/td>\n | 6.4.2.7 Other services 6.4.3 Fitting data carriers within the ingress gaps <\/td>\n<\/tr>\n | ||||||
| 43<\/td>\n | 6.5 Common path distortion products 6.6 European upstream bandwidths 6.7 Channel width 6.8 QPSK\/16QAM operation and channel widths 6.8.1 Upstream symbol rates 6.8.2 Spectral shaping (DOCSIS\/EuroDOCSIS) <\/td>\n<\/tr>\n | ||||||
| 44<\/td>\n | 6.9 Available return path spectrum (Table\u00a08) <\/td>\n<\/tr>\n | ||||||
| 45<\/td>\n | 6.10 Channel plans 6.10.1 Examples <\/td>\n<\/tr>\n | ||||||
| 46<\/td>\n | 6.10.2 Suggestions and comments <\/td>\n<\/tr>\n | ||||||
| 47<\/td>\n | 6.11 Network radiation 7 Equipment for return path implementation 7.1 General 7.2 Return path amplifiers 7.2.1 General <\/td>\n<\/tr>\n | ||||||
| 48<\/td>\n | 7.2.2 Return path gain 7.2.3 Amplifier technology 7.2.4 Amplifier adjustments <\/td>\n<\/tr>\n | ||||||
| 49<\/td>\n | 7.2.5 Test points and injection points 7.2.6 Diplex filters 7.2.7 Other filters 7.2.8 Ingress switch <\/td>\n<\/tr>\n | ||||||
| 50<\/td>\n | 7.2.9 Corrections and compensations 8 Installation and maintenance 8.1 Signal level adjustment 8.1.1 Introduction 8.1.2 Traditional method <\/td>\n<\/tr>\n | ||||||
| 51<\/td>\n | 8.1.3 Unity gain method <\/td>\n<\/tr>\n | ||||||
| 52<\/td>\n | 8.1.4 Commissioning of the fibre section 8.1.4.1 Introduction <\/td>\n<\/tr>\n | ||||||
| 53<\/td>\n | 8.1.4.2 Return path commissioning by using the unity gain method <\/td>\n<\/tr>\n | ||||||
| 54<\/td>\n | 8.2 Monitoring and measurements 8.2.1 General <\/td>\n<\/tr>\n | ||||||
| 55<\/td>\n | 8.2.2 Automated monitoring system 8.2.3 Manual monitoring 8.2.4 Principles of effective return path maintenance 8.2.5 Alarm thresholds for monitoring the upstream direction <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Cable networks for television signals, sound signals and interactive services – Guidelines for the implementation of return paths in cable networks<\/b><\/p>\n |