How Do Fiber Optics and Cable Tv Work?

Fiber Optic cable and the outdated frequent (coaxial or RF) cable are two totally different cable system applied sciences that can be utilized to distribute varied providers to finish users–homes. Basically, they differ solely in technical (electrical/communication) perspective. That is primarily necessary for the community operators as a result of finish customers or viewers do not care concerning the know-how, they’re serious about providers and TV channels.

There are few totally different ways in which can be utilized to distribute frequent providers like tv channels by way of cable networks. Every has some benefits and downsides and desires totally different topology or community infrastructure.

Analog Tv
The primary cable tv networks had been merely an extension of the broadcasts within the air. This was applied by deploying peculiar antenna cable (however with decrease losses) from the cable system headend to the properties. Due to the distances there have been additionally many amplifiers at particular factors to make sure required sign ranges. The communication was completely one-way, however later most such cable networks had been prolonged to permit bidirectional communication wanted for entry to the web through the use of programs like DocSys.

This method can be utilized with RF (coaxial) and fiber cables. Fiber optic cables are additionally utilized in some circumstances to distribute the outdated analog cable tv. The benefit of optical community is as a result of it could possibly use out there fibers in present fiber optic cables and the cable losses are very low best iptv.

Digital Tv
Digital tv in cable networks will be divided into two completely other ways of distribution. The primary one is an equal to digital broadcasting and the opposite approach primarily utilized in fiber optic networks is IP tv.

Digital Cable Broadcasting
That is equal to analog distribution over (RF) cable however with digital sign. The identical know-how (modulation) can be utilized as for terrestrial broadcasting however often, there are extra environment friendly programs that take into consideration particular properties of cable programs. One typical instance is DVB-T system which is utilized in Europe for digital terrestrial video broadcasting however cables use comparable DVB-C system.

That is the most well-liked digital tv distribution used with fiber optic cable programs. It means distributing TV channels with the IP protocol which is the spine of web communications. Every TV channels is encoded with both MPEG-2 or MPEG-Four system after which distributed over fiber optical cable community to the properties. The benefits are huge. The capability for the variety of channels is fairly excessive, all of the channels will be encoded and distributed with very prime quality, it is vitally straightforward to distribute HD channels, entry to the web could be very easy due to the IP protocol and native know-how.

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