Design and install headend of satellite receiver network

All the transport streams are configured in the QAM and each Transport Streams are tuned for different frequency. Scrambling is performed inside it. QAM modulate the signal and provides RF output.

Management can be 24 port switch. It is connected with Management Switch as shown in figure. As its name indicates that it manages the subscriber. It can give the commands for On Screen Display on one stb as well on all the stbs. It can generate the Bill for subscribers as well for LCOs.

Again a splitter is used after the QAM which works as combiner. Now the input port of splitter works as output. The output of QAM goes into the combiner or splitter where it combines and get loss of signal level then it goes into the STB. But practically for safety reasons it is recommended that it should be in between 15 degree Celsius to 19 degree Celsius.

It is shown below,. Buy Now. MPEG-2 compression is a digital format. This compression system records only those part of pictures which are changes while it did not records the repeated pictures. Thus by excluding the repeated pictures it reduces the bandwidth space. This is how MPEG -2 system works. One analog channel consumes the 7 Mhz frequency approximately in which by using this MPEG -2 compression system we can use approximately 8 TV channels.

So we provides maximum data in limited bandwidth. By using this technique we can provide services to our subscribers in Mhz bandwidth. Traditional analog headend does not support the stereo or dolby sound while digital headend supports the stereo or dolby sound also voice quality is improved in mpeg — 4 compression. Video On Demand. A Mini Digital Headend is a compact version of standard digital headend system. It is normally 3 Rack unit device.

Which performs all the functions of a standard digital headend. There are lot of benefits of this device like it save costing , save space and consume low power etc. If you want to know more about it in brief then see the link below,. A post shared by Ujjwal Swami ujjwal. The basic function of digital headend system is to decode, encode,scramble, modulate and transmission of services by using the devices decoders, encoders, scrambler, modulates and transmitters respectively. Which gives them more freedom to watch channels on TV as well as online.

There are also mini headends available in the market for lower price range. This is all about the Digital Headend System or Head end system or tv headend system. We explained head end in very simple manner so that it will not be hectic to understand.

What Is Analog Headend? Email Address. Send Me Confirmation Email. Digital Headend is totally different from Analog Headend…only transmitters can be used from your Analog Headend and your modulators will not be applicable for Digital Headend.

Thus Gospell equipements will be usable for you if you dont want to increase your Headend Cost. Gautam we will let you know about digital headend devices and its prices for that visit our Contact us page and make a contact to us…thanks. Bich company setup Box price. Monthly rental. Munavvar Ali from Delhi Sir I want setup your digital cable tv network in our area.

My contact: 91 whatsapp number. Please clear 64 pay chenals licence include in this cost. What can be the causes of this?? I am trying to resolve from last 3 months..

Can u tell me the causes of this prob?? Sir,, Mera Ghar assam main Hain aur main last 20years sa cable ka business main hu aur Mera area rural main Hain.

Lakin job sa yeh digital hua hai tab say Mera business bondh ho gaya kiyoki Mera area sa town 30km Hain aur digital ke liya overground cable sa khisna sa aprox 4lakh ka expnd ho raha Hain lakin risk bhj bohut hai maintaince ka.

Pls mujha botayanga Kiya iss tarah ka min chenel ka digital control room ho sakta Hain kiya? Pehle Mera control room 60 Chennal ka Tha aur hudred consumer Tha aur uss sa Mera aur 2employee ka Ghar Aram saal jata Tha lakin Abhi kahisa support nahi milna ka wajah sa bondh korna por raha Hain. Pls help and inform us if possible. Tnks Rajnish. Superb work ujjwal ji.. Once peaked on the correct satellite, the backup antenna can receive and restore the signal in place of the faulty antenna.

The signal outage is thus minimized. For operators that do not have a management system that can perform the switching automatically, or do not wish to perform the integration, there is a special solution from DEV Systemtechnik: the DEV Antenna Redundancy Switch monitors and switches the signals of connected antennas, and it can completely take over the control of the ACU in the case of a dish failure.

As a result, it creates a closed, automated system for achieving antenna redundancy without the need for an external management system. Failures are not only caused by technical defects. Severe weather events can affect entire antenna farms, due to attenuation of satellite signals caused by rain and atmospheric moisture, which more severely attenuates higher satellite frequencies Ku-Band, Ka-Band.

However, since outage-causing weather effects tend to be geographically localized, a concept called Site Diversity can be implemented to maximize uptime and minimize weather effects. With this Site Diversity approach, a redundant downlink antenna facility is built in another location, typically at least 50 to kilometers away.

The redundant facility would typically be smaller, possibly unmanned, and may only include the primary satellite dishes, outdoor equipment and shelter. Since the purchase of fiber optic telecommunications service may be required for the fiber connection, and this can incur a costly recurring fee, methods such as CWDM Coarse Wavelength Division Multiplexing and DWDM Dense Wavelength Division Multiplexing are typically used to bandwidth-efficiently combine and transport the signals from the antenna Diversity Site to the main site.

At the RF-over-Fiber receive location a demultiplexer divides the multiplex back to individual channels and paths. To distribute, demultiplex, transport, and switch RF-over-fiber signals within and between facilities, different approaches are viable, depending on the application and operator preferences. The classic version is a hard-wired distribution: the incoming RF signals are fed to the electrical-optical converters on a splitter.

Integrated amplifiers are mostly used here, since splitting reduces signal power. For instance, the signal level drops by about dB with a splitter. A distribution of corresponds to an attenuation of approximately 26 dB. This very significant loss due to splitting must be addressed in addition to any line losses. DEV Systemtechnik is a key supplier of equipment for RF signal distribution, switching and amplification functions, offering unique solutions in a single chassis.

These products are available in different sizes and with different degrees of integration. Combining both the signal conversion and signal distribution in the same device delivers significant space and power consumption savings compared to conventional solutions. This makes it possible to switch an input source to any number of outputs, or vice versa. With an RF Matrix Switch, it is no longer necessary to manually reconfigure the cabling or patch panels in order to change signal paths.

Redundancies, optical-electrical conversion, and amplification can all be executed by a Matrix Switch. Did any answer help you? If so, you should accept the answer so that the question doesn't keep popping up forever, looking for an answer. Alternatively, you could provide and accept your own answer. Add a comment. Active Oldest Votes. For example, in the days of dial up Internet service, the consumers had modems in their homes attached to phone lines, and the head end was the concentrator where all those phone lines met up.

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