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Definition
CATV, namely Cable TV is also known as community antenna television. In addition to bringing television programs to those millions of people throughout the world who are connected to a community antenna, cable TV will likely become a popular way to interact with the World Wide Web and other new forms of multimedia information and entertainment services. CATV generally use coaxial cable to transmit TV programs, and actually the fibers bring a lot of benefits in data communication in CATV systems.
Technology of CATV
In Cable TV, channels are divided into a number of frequencies and modulated over a single cable enabling the cable operator to propagate and distribute many channels on a fiber optic and coaxial cable direct-to-home. CATV works by spreading TV channels, FM radio, Data services and Telephony over a single wire.
Advantages & Disadvantages of CATV
Advantages
- CATV services enable the viewers to choose from a list of TV shows, such as movies, sports or other preferences etc. and watch according to their wish.
- There is no overbuying of channels with using CATV. Because CATV is more suitable for those subscribers who wants only a few favorite channels because CATV allows the users to choose their favorite channels instead of paying for many unwanted channels which come in a package as a whole.
- CATV has made possible telephony services along the same cable.
- Though CATV remains uninterrupted due the presence of the coaxial cables and optic fibers, picture quality may sometime be affected. However, it is hardly affected by bad weather.
- No converter needed
- Easy installation
Disadvantages
- Using many amplifiers that reduce signal quality and not easy to repair
- Having EMI distortion
- Using Tree-Branch Structure
- Not easy to expand
Related Link
- Introduction of CATV/HFC Transmission Systems
- Video Multiplexer For CCTV And Surveillance Applications
- Important Tester For CCTV Security Camera Surveillance Applications
- Advantages Of Fiber Optic Transmission And Application In CCTV System
- United Fiber Selected Fusion TV Platforms for FTTH Network
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