CaTV | Head-end System

 

Photo Credits | Jim Henderson
 

In cable television head-end is a facility for receiving television signals which is then process and distributed over a cable television system. The building is typically sturdy and purpose-built to provide security, cooling, and easy access for the electronic equipment used to receive and re-transmit video over the local cable infrastructure.

Since the term head-end had evolved, a head-end system (HES) is a facility or equipment that receives, processes, and transmits communication signals. It might be referred to a system that collects and submits meter events and measurement data to an application. The role of a head-end system depends on the context, such as in smart metering or cable television.


Smart metering
A head-end system can automatically collect meter data, monitor parameters, and schedule data collection. It can also provide secure access to meters for software updates, configuration, and other requests.

Cable television
A head-end system receives TV signals from satellites, converts them, and distributes them to cable networks and homes. Modulators attach an input signal to a specific frequency so that TVs tuned to a specific channel can receive it.

Some examples of head-end equipment includes, satellite dishes and receivers, antennae, microwave receivers, transmitters, converters, and modulators.

The head-end system receives TV signals from satellites. And converts these signals and distributes them to homes and cable networks. It receives and re-modulates the incoming frequency by amplifying them and sends these to the main distribution center to transmit them to the network system.

It is the process of making the video and audio signal compatible with the analog signal to the analog input of our televisions at 47-862 Mhz. Head-end systems are ideal for multi-apartment buildings, hotels, hospitals, prisons, and places like these. 

Head-end system is classified into two types; double-sideband and single-sideband. The main difference between a double sideband and a single sideband is that while the double sideband is left with gaps between the channels, there is no gap between the bands in the single sideband.

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