Contents si 4.2 Types of modulation 58 - download-books.co.uk by yaofenji

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									                                          Contents

                                                     Page
PART ONE - FUNDAMENTALS OF ELECTRICITY
1.1 Electricity                                        13
1.2 Voltage                                            14
1.3 Current                                            14
1.4 Resistance                                         15
1.5 Ohm's law                                          16
1.6 Power                                              16
1.7 Prefixes                                           16
1.8 Voltages                                           17
1.9 UHF and satellite TV signal levels                 18


PART TWO - DIGITAL TELEVISION
2.1 Analogue picture formats                           21
2.2 Digital picture formats                            23
2.3 Analogue to digital conversion                     25
2.4 Digital compression                                26
2.5 Programme multiplexing                             28
2.6 System overload                                    30
2.7 Noise removal and error correction                 32


PART THREE - DIGITAL TV DISPLAY S
3.1 The home cinema                                    35
3.2 Picture displays                                   36
3.3 The cathode ray tube                               37
3.4 Flat panel TV displays                             38
3.5 High Definition TV                                 41
3.6 Analogue interconnections                          43
3.7 Digital interconnections                           45
3.8 HDMI cables and connectors                         46

PART FOUR - MODULATION TECHNIQUES
4.1 Radio waves                                        si
4.2   Types of modulation                              58

PART FIVE - UHF BROADCASTING AND RECEPTION
5.1 Broadcasting formats                               65
5.2 Principles of radio and TV aerials                 67
5.3 UHF signal measurements                            73
5.4 TV amplifiers                                      77
5.5 Splitters, combiners, diplexers and filters        81
5.6 Mounting hardware                                  84
5.7 Installation techniques                            89
5.8 Typical domestic systems                          100
5.9 Troubleshooting                                   102
                                                             Page
PART SIX - UHF SIGNAL DISTRIBUTION
6.1 Coaxial cables and connectors                             109
6.2 Distribution within the home                              116
6.3 Multi-dwelling units                                      119
6.4 MAW network planning                                      127
6.5 Choice of SMATV relay channels                            133
6.6 Gap fillers                                               136



PART SEVEN - SATELLITE TV RECEPTIO N
7.1 Satellite locations                                       139
7.2 Satellite footprints and frequency bands                  140
7.3  Dish antennas                                            143
7.4  Feedhorns and LNBs                                       147
7.5 Signal measurements                                       154
7.6 Satellite receivers                                       155
7.7 BSkyB installations                                       156
7.8    Multi-satellite reception                              165
7.9    Motorised systems                                      172



PART EIGHT - SATELLITE TV DISTRIBUTIO N
8.1 System concepts                                           181
8.2  Multiple Sky installations                               184
8.3 System concepts                                           190
8.4    System electrical safety                               194
8.5    Network planning                                       196
8.6    Installation techniques                                212



PART NINE - TEST EQUIPMENT FOR TV AND SATELLITE RECEPTIO N
9.1    The frequency spectrum                                 219
9.2    Analogue TV measurement parameters                     221
9.3    Digital TV measurement parameters                      222
9.4    Signal level meters                                    227
9.5    Spectrum analysers                                     228



PART TEN - FIBRE OPTIC DISTRIBUTIO N
10.1 Why fibre?                                               233
10.2   The propagation of light                               234
10.3   Wavelengths and types of propagation                   235
10.4   Fibre construction                                     236
10.5   Fibre connectors                                       237
10.6   Fibre jointing techniques                              237
10.7   Fibre hardware                                         246
10.8   System planning                                        247
10.9   Installation and commissioning                         248
                                                           Page
PART ELEVEN - THE DISTRIBUTION OF VOICE AND DATA SIGNALS
11.1 An introduction to telephony                           251
11.2 Telephone installations                                252
11.3 Data switching and routing                             256
11.4 The internet                                           258
11.5 Broadband internet connections                         261
11.6 VoIP                                                   263
11.7 IPTV                                                   264


PART TWELVE - STRUCTURED CABLE NETWORK S
12.1 Network concepts                                       267
12.2 Network cables and connectors                          269
12.3 Installation techniques                                271


APPENDICES
A   Health and Safety                                       281
B   References and websites                                 289
C   Abbreviations and glossary of terms                     291
                                                   About the Author

                                              The author is an acknowledged expert in the field of TV, satellite and
                                              multimedia installations having been a Chartered Engineer for more than
                                              40 years. For 26 of those years, Bob was with the Rediffusion group
                                              of companies, including a secondment in South Africa for 15 years as
                                              chief engineer of Rediffusion South Africa. Returning home to the UK in
                                              1985, he founded Race Communications Ltd - based in Berkshire - to
                                              service the growing N industry. The company thrives to this day with
                                              Bob planning, specifying and supplying Digital Switchover equipment to
                                              professional installers countrywide.

                                          Bob has written and presented numerous technical articles and papers
                                          throughout the world and is always in demand as an advisor to a variety
                                          of commercial, industry and governmental bodies. In addition, he spends
                                          several days a week running technical training courses for military and
                                          civilian personnel at the Career Transition Partnership in Aldershot.

                                          Bob is married with two children, is a keen Rotarian and spends his
                                          weekends at his house in Kent.




                                      Acknowledgements and Thanks

A lot of people helped to create this book.


I am particularly indebted to Les Hampson of TV & Satellite Ltd who spent many hours proofreading the draft copy
and came up with many suggestions on how to improve the document.


Many other individuals and companies gave me help and assistance including the following:-
Keith Bail; Mark Bartlett; Dr C Bewick; Dr J Boccaccio; Stuart Calaz; Richard Clarke; Ron Etheridge, Brian Horobin;
Ivan Horrocks; Simon Humphries; Roger Miles; Matt Presdee; Barry Simpson; Richard Stallworthy; Jeff Tyler;
Kevin Wright.



Information, logos and images from the organisations below were also used. Copyright remains with the
respective copyright holders.

								
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