What you need to connect cable television. Connecting free digital TV to TV. Connecting digital airtime television

In the field of cable TV, the capital is ruled, and therefore the path of development and the embodiment of the figure depends on the issue of the problem of the management of each individual company.

A typical path is the launch of broadcasting in DVB-C format (version of the DVB standard for cable networks, which is less compressed and less noise compared to the "essential" standard, which is permissible in the cable).

The standard implies the use of a coding system for channels, which makes it possible to build different services: highlight channel packages, open and close them for users without leaving the office. To decrypt the coded channels from the subscriber side, the so-called access maps are used.

To receive cable TV, you will need a decoder that supports the DVB-C standard

Each coding system has its own, but the standard provides a universal connector for connecting to a TV or the CAM module console for a specific encoding, which is already installed by the access card.

Like DVB-T2, "Cable" version of the standard supports high definition content (HD). But to include or not HD channels in your network, each operator decides on its own. It should be noted that almost all cable networks in Russia, where digital television is launched, offered HD channels. Some even put experiments with 3D channels.

Equipment for receiving DVB-T2 and DVB-C

Obviously, equipment supporting the relevant standard is needed to view the digital signal.

TVs and prefixes with DVB-C support appeared on sale back in 2007, so if you have changed the TV, support for the "cable" version of the standard for you, most likely there is (in this case there is a slot for connecting CAM module, if such is provided by the operator).

Many cellular network operators offer cable broadcasting of digital television channels through a CAM module

Ideally, to connect to cable digital television, the owner of such a TV is enough to purchase a CAM module from the operator and set the access card there. But, since each operator itself determines the service policy of the service, the CAM modules are sometimes not offered, and then subscribers need to acquire an intermediary device - a prefix with support for the conditional access system (Court) used by the operator.

Most often, such devices are "sharpened" only under the same court, which means that it will be possible in another network only if there is the same court in a random coherent circumstance.

Although in our country the broadcasting of digital channels is still under the standard resolution, some manufacturers offer media executives that allow you to play Full HD - Video Content

If the cable operator offers HD channels (FULL HD - 320 * 1080 image resolution), then to view the equipment (TV, if a CAM module is used, or a TV + console) must also support Full HD. In general, support for DVB-C (DVB-T / T2) does not mean support for Full HD (both for televisions and for consoles). A similar situation - with 3D channels.

The cable TV decoder also allows you to play video in MP4 format

The fact that the TV supports the "cable" version of the standard, unfortunately, does not mean that it decodes and the "ethereal" version of the figures (the one is used in Russia). Delivery of equipment with DVB-T2 support to our country began only in 2012. So you can say with confidence if your TV was bought earlier, it will not "understand". Cable networking consoles are also rarely supported by DVB-T2.

If your equipment does not allow "by default" to take the essential figure, it is not necessary to change it. You can restrict ourselves to the purchase of the console for DVB-T2, the cost of which starts from thousand rubles. By the way, the support for Full HD in the DVB-T2 console is not yet in demand (since, as noted above, HD channels will not appear in the near future).

Figure from satellite

Another "source" of digital television can be called satellite. Satellite platforms that officially operating in Russia use DVB-S and DVB-S2 (as well as with Essential standards DVB-T and DVB-T2, DVB-S2 is the following, more advanced generation DVB-S).

To receive satellite digital television, a correctly installed antenna is required (the diameter of which depends on the geographical position of the subscriber and the selected satellite), the receiver with a valid access card and TV.

Satellite kit "Plate + decoder" will allow you to provide an apartment or the country's digital TV in HD quality

Support for the DVB-S / S2 standard can be integrated into the TV, then the operator does not acquire a receiver, but a CAM module (and, of course, an access card for a module). True, not all the platforms operating in the Russian market offer CAM modules, and those present on the market modules also do not always work correctly in TVs - so before connecting satellite television it is better to consult from specialists before connecting satellite television.

Note that to view Full HD channels from the satellite, you need a TV and a receiver with HD support (similar situation - with 3D channels).

Photo: Manufacturers companies

Russia is actively moving from analog on digital TV. In principle, this is a completely natural process, since the improved signaling format allows you to broadcast the highest quality image. All users care how to connect digital television.

Let's start with the fact that this is an affordable standard, and not any privileged opportunity. Note that today every user has about 20 free TV channels, depending on the region.

Customize digital television needs at least because to watch your favorite channels with clean sound and high-quality image. However, first will have to acquire special equipment.

Channels in digital format are broadcast in the packages that are called multiplexes. At this stage, Russian subscribers were offered 2 free multiplex, each of which consists of 10 TV channels.

Advantages of digital television

Digital TV is a new signal transmission technology that provides a broadcast of high-quality image and pure sound. Connecting digital television opens completely new features before each user, for example, you can view the esters in HD quality. Naturally, the analog TV cannot boast of this.

The concept of the technology under consideration is as simple as possible and understandable. Picture and sound are transmitted on radio waves as individual streams. In general, this process reminds the connection of the computer and the Internet. Therefore, digital tv can be compared with watching YouTube from a computer.

In addition, it was at the expense of this algorithm that providers will be able to send much more television and radio programs. A large number of channels is far from the only advantage. The functionality in principle was noticeably expanded, an interactive TV appeared. You can put your favorite pause or write to the hard disk.

The main advantages of the new television signal transmission technology:

high quality image;
pure and rich sound;
broadcasting the meditant in HD format;
available different language versions of one program;
blocking in advance selected TV channels.

Connect the digital TV antenna is at least because all modern models of TVs are designed to play content in HD format. An ordinary analogue ether to ensure the transfer of such data is not capable. At a minimum, there are enough free multiplexes. Consequently, the viewing channels do not have to pay.

What you need to connect digital TV

To connect the "digit" to your TV and fully utilize the main advantages of this format, you first need to spend a certain amount of funds for the purchase of appropriate equipment.

The situation will noticeably simplify if you use a TV with a built-in T2 adapter. As a rule, they are equipped exclusively modern models. In other cases, it is necessary to additionally buy a receiver, and sometimes change the antenna. So that all items work correctly, they need to be connected to the cable.

How does digital television connect via TV? Where to begin? If you live in a multi-storey building and connected to a collective teleconnenne, you first need to know whether it is adapted to the reception of the digital signal.

Ask the neighbors - it is likely that they are already using all the main advantages of "numbers". In this case, the collective antenna is suitable, and it does not have to change it. It remains only to purchase the prefix and set up a home television network.

What do you need to connect the "digit"? Let us list the necessary equipment.

Antenna

If you live not far from the television tower, then you can receive a signal using the most ordinary room decimeter antenna. Otherwise, you will have to change the wave receiver, give preference to a simple directional model. In addition, it is very important to correctly arrange an antenna on the tower for high-quality reception DVB-T2.

Amplifier

In the process of selecting the antenna, questions arise regarding the feasibility of gaining a signal. If you previously used the amplifiers, it is not necessary to refuse if such practices are not necessary if the "Figures" is connected. A good amplifier will provide high-quality signal reception even in places that are extremely far from television steps.

Broadband antennas are increasing not only the power of T2 range, but also all radio waves with similar frequencies - sometimes it prevents the decoding of the desired signal. Therefore, if the reception is good, it is not worth using the amplifier. Sometimes his connection is harmed, and not benefit.

When connecting digital channels, many buy amplifiers with a power source of 12 V. However, in accordance with the T2 standards, the last models of receivers are issued voltage 5 V. Therefore, in active antennas that are intended for DVB-T2 format, amplifiers function from voltage 5 V with direct Connect to the console. This is a budget and practical decision. First of all, an additional power supply is eliminated.

Tuner

The equipment for digital TV is mandatory to include a receiver. This device performs decoder functions. Tuners are characterized by maximum practicality and simplicity in management. The front panel contains the basic buttons, but the main instrument of control instrument is a remote remote control.

The decoder operates correctly with the TV. To qualitatively configure channel broadcast and connect the device, it is necessary that the decoder is equipped with an HDMI interface and supported HD format. Otherwise, even HD channels will not differ anything from standard analog quality.

Cables

Connecting equipment for viewing digital TV is carried out using a cable, so it is also an integral element of the entire design. The receivers are connected to old TVs via RCA tulip or SCART input, and to modern through the HDMI interface. Therefore, in any case, you will need a cord with the appropriate connectors.

To get a high-quality high-quality image, you must connect the TV to the console via HDMI. RCA and SCART connectors do not support HD format, therefore, the image will be the same as with analog TV. In some situations, the HDMI cord is included in the basic tuner package, but still it has to be purchased separately.

The antenna connects to the receiver using a coaxial cable, again find it absolutely in any store. Coaxial cable Connect through one of the available connectors: RFIN, RF-IN, RF IMPUT. Fasten the plug at the end of the wire, the quality of the translated image depends on this.

Connecting digital airtime television

If you use an old TV, then a special receiver will be required to connect "numbers". New models are equipped with T2 adapters, we have already spoken about this earlier, therefore for them additional equipment does not need. Be sure to check whether the built-in MPEG-4 module works, which operates in Russia.

To find out how to connect digital airtal television, you first need to select a signal reception method.

Connecting "Figures" through the most common overall antenna, which is installed on the roof of your home or in the entrance.
You can also watch Cents by connecting cable television. This service provides many providers.

First consider the first option, since it is more practical and less costly. If you do not have a common antenna, go to the next item on the choice and purchase antenna.

Digital essential television allows you to set up about 20 free channels - 2 multiplex. Of course, the cable TV provider will offer much more, but for it will have to pay.

It is likely that the third multiplex will soon appear, which will also be free, but so far this question is in the air. First, the Russian infrastructure is not calculated for a too voluminous broadcasting range. Secondly, there are certain problems associated with the lack of frequencies. Experts believe that 2018 will become a turning on the issue of refusal from analog television. Accordingly, the amount of free channels is finally fixed.

Now consider the subtleties of the transition from the analog to digital television. Conditionally, the process can be divided into 5 stages, consider each of them.

Selection and installation of antenna

If you plan to independently configure the connection to digital television, it is necessary to start from selecting antenna. First, remember that a single universal solution does not exist, so the model should be purchased based on the individual features of the house / apartment. Secondly, you can always install an antenna capable of receiving a signal even in remote regions.

The most attractive option is an ordinary room antenna, but as practice shows, its power is missing. Preferably there are nozzles that will appear every time trucks pass around the house.

Even if a powerful integrated amplifier is used, it will be extremely difficult to achieve high-quality reception, since the obstacles are quenched by waves. Room antennas can only be used if you are in an ideal place - near the tower, and the window is directed to the repeater.

External reception of the signal is a more effective solution, especially in comparison with the room antenna. The wave range passes through the walls of the house, but the quality of the signal because of this suffers significantly. External antenna will provide a powerful signal.

What antenna is better to choose: active or passive? To answer this question, it is necessary to consider at what distance it is located from the DVB-T2 tuner. Practice shows that often enough and passive model. It is not equipped with an auxiliary amplifier, even though the cable length is quite small. Active antennas are equipped with a built-in signal amplifier.

Determination of the location of the television tower

To find the nearest tower, you must examine the digital TV card in Russia. Add the name of your settlement through the search menu, and then estimate the distance and direction to the nearest signal transmitter. Naturally, the broadcast parameters should also be taken into account.

Equipment setup in accordance with the signal reception quality

The zone of confident reception is to preserve the high quality of the signal transmission, regardless of third-party factors:

weather;
solar Activity;
season;
temperature;
air humidity level;
times of Day.

If the transmitter is in the area of \u200b\u200bthe line of sight, then the confident receipt of the signal is guaranteed. The main thing is correct to send an antenna.

As for the remote zone from the TV TV, then there are often problems with signal broadcasting. Outside the confident zone, radio waves fall into shading the surface of the Earth, so difficulties arise with the configuration of the broadcasting.

According to official data, the problem is solved by proper placement of transmitters, in other words new tower are being built. In any case, in the zone distant from the transmitter, the quality of the signal will depend on weather conditions. Therefore, it is so important to fix the antenna in the right direction and securely fix it.

To receive signals for a long distance with minimal quality loss, use large-dimensional antennas, which differ from the analogues with a complicated design. Subscribers who are in the remote zone must choose the optimal design of the equipment, guided by the maximum gain ratio. In this case, the dimensions of the design must remain minimal. Usually the problem is solved by using directional models.

Setting the antenna and television equipment

To complete the connection "Figures", first need to connect the equipment with a special cable. After that, you can connect the TV and receiver to the power grid. The antenna lay down to the side of the nearest transmitter.

The process of setting up the decoder is simplified as much as possible, so there will be absolutely problems with connection or control. On average, all work takes about half an hour, for the correct connection, follow the recommendations prescribed in the instructions.

After the first launch, the AUTOINSTALL Assistant menu opens, the most important parameters that determine the operation of the receiver are set. The label buttons on the remote control will help to spend step-by-step equipment setting.

When the antenna is directed and connected, and the receiver is configured, you need to make sure that all cables were connected correctly. Then turn on the TV.

Search channels (automatic or manual)

Most users prefer to configure channels automatically. To do this, open the menu and go to the Autopoysk section. Do not turn on the equipment until the scanning is completed. If the channels are not found, then the receiver does not receive a signal from the antenna.

Try moving the antenna, and then again run the automatic scanning process. Check the quality of the signal by changing the position of the antenna. Make it until you configure the TV channels of the desired multiplex.

As for alternatives, it is worth returning to the main menu, and then go to the section "Search manual". On some equipment models, this feature may be called a little differently. The TV screen will display a list in which you want to manually make data on television broadcasting, frequency, then confirm the search. Properly performed manual setup - the presence of 20 free channels in excellent quality.

Connecting digital cable television

To connect cable television in "Digit", you should use a universal receiver. In some situations, users buy a digital cable console. Such devices are equipped with an optional PCMCIA connector for connecting the CAM module, in which the access card is located to the paid TV channels. Naturally, it is pre-selected one of the tariff plans offered by the provider.

Many modern "smart" TVs are already equipped with a built-in PCMCIA slot, so there is no need to purchase additional equipment.

For the correct reading of the CAM card, it is desirable to use a high-quality card reader, however, the devices of this type are used much less often, since users often prefer hybrid digital receivers.

To connect digital television to the TV, just follow the instructions from the provider. As for the settings of the channels, you can use the recommendations shown earlier. Mostly receiver work on a similar principle, there should be no problems. The only difference is that when the digital cable TV is connected, it is not used by the RF wire, but the cord of the provider.

Connecting two or more TVs to one console

The perfect option is to connect one TV to one console. Therefore, the optimal solution will be the acquisition of individual receivers for TV devices. Naturally, it will not be the most budget way to solve the problem. The user connects the cable to the splitter, and then from each input it goes to individual receivers. The connection scheme is as simple as possible and understandable.

If you wish, you can connect the second TV to one console, it is enough to just use all available interfaces. For example, through HDMI, connect the first device, and with the help of "tulips" the second.

Connecting digital TV for this principle is not the best option, because the identical signal will be received on both TVs. In other words, the picture is synchronized, it is impossible to watch different TV channels at the same time.

Additional solution of the problem is the purchase of a RF modulator, which will serve individual decoded signals on TVs. However, the cost of such a device is much higher than the price of a conventional receiver.

Note.

To connect the TV to the cable network or digital television antenna, you need to purchase a special television cable and to wear F-plugs on its ends.

With an illiterate solution to this task, the TV when receiving an analog signal can operate unstable or with interference, and the digital image and sound may disappear due to the signal loss in the cable and the places of its connection.

The high-frequency current of the television signal flows through another law. Everyone knows how underwear is pressed in a centrifuge washing machine: the more turnover, the stronger the centrifugal force acts on the water, and it is better removed from the underwear, the underwear becomes land. In his own body, many in childhood experienced, rushing on the carousels, the action of centrifugal force.

The high-frequency current of the television signal in the antenna cable is also flowing. The higher the frequency, the closer to the surface of the conductor it flows. The skin effect is manifested. If you take, for example, the copper wire with a diameter of 10 mm and the tube of the same diameter made of copper with a wall thickness of 1 mm, then the current with a frequency of 1000 MHz will flow on them with the same losses!

Therefore, in the antenna cables used for military and space equipment, to reduce the losses of the signal (attenuation), often the central core and cable braid are covered with a thin layer of silver and even gold. This is very expensive pleasure, and in everyday life, such cables do not apply.

Due to the small size of the television signal in the antenna cable and its high frequency, determine the presence of it in the cable and, moreover, to carry out measurements at home without specialized expensive devices, it is not possible. Only connecting an antenna cable to the TV will determine the presence and quality of the television signal.

Tv cable marking

The largest distribution on the market received antenna coaxial cables of various manufacturers with a wave resistance of 75 Ohm grades RG 6U, SAT 50, SAT 703B and DG 113, which can be successfully used to receive an analog and digital television signal up to the transmission from the satellite antenna with a frequency to 2, 15 GHz. The brands are given in ascending order of the quality of the antenna cable - to reduce the loss of signal (attenuation) during transmission. Marking (designation) is not necessarily applied on the shell of an antenna cable throughout its length through each meter with a digital tag of a pattern.

This antenna cable marking indicates the following:

Cabletech - manufacturer Cabletech (China).
RG 6U / 48 - Cable brand.
High Quality Coaxial Cable - high quality coaxial cable.
75 OHM - 75 ohm wave resistance.
055m - a label of a pattern, with each meter the label varies to 1.

How to choose an antenna television cable

On the shell of antenna cable, the marking should be mandatory, as shown above. Antenna cable must have a wave resistance of 75 ohms (all the TVs and switching devices are calculated on such resistance - amplifiers, splitters, consoles for receiving digital DVB-T2 channels). The outer diameter of the antenna cable must be at least 6 mm. Central veins and shielding braid from electrical copper. This requirements correspond to the antenna cables of the SAT 703B and DG 113 brands. In the RG 6U cable, the central lived steel coated with a galvanic method of copper, the screen of aluminum foil and braids from copper alloy, this is a budget option.

Describe all the television cables presented in the market is not possible, but the information provided is quite enough to choose the right one.

How to install an antenna plug on the cable

There is no need to invite specialists in order to connect the TV to the antenna cable. This work can perform each home wizard independently using a girlfriend if the instruction presented below will follow.

The voltage of an analog or digital television signal in the antenna cable is millions of volt lolts, so the antenna cable connected to the cable network or another TV is not dangerous for a person. You can safely separate the cable without turning off the second end of the splitter or TV. Not dangerous and when cutting a cable, a random short circuit between the central conductor and the shielding braid.

How to install on an antenna cable F-plug

The plugs are sold three sizes for the antenna cables of different diameters. When buying, pay attention to the F-plug approached for your antenna television cable. This type of plug is suitable for an analog, digital television signal and a signal that runs from the satellite antenna.

You can turn the F-plug to the cable by separating it in two ways, with a breakdown of the shielding braid, on the diagram on the left side, and without wrapping it, on the circuit on the right, in accordance with the cutting circuit below.

Reliable F-plug will be held in case of coasting shielding braid, but if you cannot turn it out, you can use the second way.

For the cutting of a television cable, a non-knife pressing, so as not to damage the shielding braid of an antenna cable, its external shell is cut along several centimeters.

After the shell is cut, it is rejected to the side and cuts off at the start of the cut.

Aluminum foil and copper braid are turned away. The screen in the antenna cables is in three versions: one copper braid, aluminum foil and on top of it copper braid (as in my case), only aluminum foil.

Many do not know that to give mechanical strength foil is covered with the inner side by polyethylene. Clean the plastic is impossible. If you turn the plug on the inner side of the foil of the antenna cable, then the contact will not be, or it will be very bad. So that this does not happen, you need half a turning foil half back, then the conductive side will be outside.

There are situations where the diameter of the hole of the internal thread F of the plug is greater than the diameter of the antenna cable. In this case, you need to put several layers of insulating tape to the antenna cable before breaking the foil to adjust the cable size. Next to do everything as described. Insulation from the central speaker on the technology described in the article "Preparation of wires to installation" is removed.

Foil is screwed down the foker "Cheating to the cable".

The central livelio of the antenna cable is bought so that about 2-3 mm remains to be left.

Hands up to the stop the second half of the plug, and the F-plug is ready for operation.

There are cases when after inserting an antenna plug in the TV socket, the cable has to be bend at right angles or it is impossible to install the TV close to the wall due to the interfering cable. In this case, you can use the F-socket - the plug of the corner structure.

The difference between the two plugs described is only in their form. The installation technology on the television cable plugs of the direct and angular design is the same.

How to install an old design plug on an antenna cable

Before the appearance of antenna F-plugs, the plugs of another design were used, which also did not require soldering, but were connected to the antenna cable in their technology.

Before starting the installation of the plug on the antenna cable, you need to hold it for the metal part, unscrew, rotating counterclockwise, plastic case. Then the housing is to wear on the cable so as not to forget.

The next step is to prepare an antenna cable to install. To do this, the blade of the knife is needed to cut through its outer shell for a length of about a centimeter. Next, remove the shell and cut the shielding braid by 5 mm. Delete five millimeters of insulation of central veins. Now the antenna cable is ready for sealing in the plug.

When refilling cables in the plug you need to exclude the touch of the conductors of the braid fasteners of the central core. Pliers crimped the petals of the antenna plug around the shielding winding. There should be no great effort. The main thing is that there was a reliable contact.

The last step is to turn plastic on the metal part of the plug and insert the plug into the television socket.

Where to insert antenna cable on TV

After the connector is installed on the cable, you can connect it to the TV. The jack for connecting the TV to the antenna or cable network is usually located on its back wall and labeling is applied in the form of an abbreviated inscription "Ant".

In the photo with the right of it, it is seen a nest for connecting an antenna. The socket is special, standard and different from all other connectors and sockets available on the switch panel. Therefore, it is wrong to insert an antenna plug to another nest is physically impossible. Any of the connectors are well inserted into the television socket, the installation of which is considered in the article above.

In modern TVs to receive a television signal, two connectors are installed to connect antenna: - cable (digital) television and satellite antenna.

One, which is denoted by RF (ANT 1 IN), is designed to connect the antenna of a digital television or cable network, such installed on all models of TVs, both old and modern. The second began to install recently, LNB (ANT 2 IN with external thread) is designed to connect the satellite antenna.

If the TV is supported by the DVB-S2 standard, then the satellite antenna can be connected without a receiver directly to the LNB connector. To receive digital television channels from a television tower to an individual antenna, the TV must support the DVB-T2 standard. Therefore, when buying a TV, you need to pay special attention to the list of broadcast standards that it supports.

To receive a TV signal from a given connector, you need to select an antenna signal source or satellite television and perform automatic or manual channel configuration.

How to connect an antenna cable to a TV without a plug

There are situations in life that an antenna cable is urgently to TV, and there is no plug at hand. You can temporarily connect an antenna cable without a plug. To do this, you must first remove the upper sheath for a length of 5 cm, develop and unscrew the shielding braid, remove the insulation from the central cable vein and the core itself beg in the loop. The width of the looping should be slightly more holes in the central socket of the connector.

If the connector on the TV is in the photo, then the central contact needs to wear an insulating tube. Next, the loop is inserted into the central contact, and the shielding braid is refilled into the screwdriver blade connector. The main thing is to avoid contacting the wires of the shielding braid with the central residential cable.

If the braid is aluminum, then you can insert it into the television connector and to fill thin copper wires into free space taken from any multi-core copper wire. So that the wire does not fall out from the TV connector, you can fix it with several toothpicks or matches. Such an improvised connector will serve quite reliably.

How to connect an antenna cable to crab without a plug

The cable preparation occurs in the same way as for putting on the F-plug, the central lived inserted into the crab f-connector, and the screen is put on the protruding part of the crab connector and is fixed by any wire or clamp. As a last resort, you can fix the cable, tightly casting several layers of the tape. It will not work no worse than with the F-connection.

If you use a clamp with a screwing device, the quality and reliability of the connection will not be worse than with the F-connector.

What antenna plug is better

The answer is unequivocal: the best of the three discovered plugs for the television coaxial cable is the F-plug. It is easy to notice in the photographs above, not even owning special knowledge.

As you can see, the antenna plug of the old construction and the Soviet antenna plug has a small portion of the central cable vein, not closed by an embossed braid. This violates the homogeneity of the wave resistance, which leads to minor losses of the television signal.

The F-plug does not have an open portion of the central veins of an antenna cable. Another advantage of an antenna f-plug is simplicity. Having a minimal set of standard tools, without skills, almost anyone can wear an antenna F-plug on the cable.

How to connect multiple televisions
to cable network or antenna

Connect multiple TVs to the cable network or an antenna that transmits an analog or digital television signal is not more complicated than one, except to be put on the cable not one F-plug, but several. To do this, there are splitters of a television signal, referred to as "Crab", they are also called "splitter", "splitter" or "divider".

In the crab there is one connector to connect a signal from an antenna or splitter in the entrance, marked in (input), and several connectors for connecting TVs are marked with OUT (output). If there is no marking, then usually the entrance is in the crab on one side of the case, and the outputs in a row on the opposite. All outputs for the correct operation of the crab must be connected to the TVs.

If you exit two, then to two TVs, if the output is three, then to three, and so on. There should be no free connectors on the crab. If there is no connected output, it must be loaded into the resistor resistance of 75 ohms. Or they say, put the plug. But at the same time, part of the useful signal will be lost, it is better to use a crab that has the number of taps equal to the number of connected TVs.

The design of the splitter is a thin-walled housing from the silumin or brass, in which the connectors for connecting F-plugs are at the same time. The divider diagram is usually transformer, one twist of enameled wire with a diameter of 0.2-0.4 mm, which has been produced through ferrite rings or tubes. Installation of transformers is carried out by attachment. The housing is hermetically closed with a metal lid and is selected or fixed with glue.

For fastening a crab on the wall there are eyeles. In the case there is also a thread with a screw for grounding, although where to take an earthen wire in the overwhelming number of apartments, it is not clear. It is usually not ground, so it is possible on some velocked channels from the wires of electrical wiring, the Internet, telephone passing next to the television cable. If possible, when laying the cable, such a neighborhood should be avoided. For a more detailed acquaintance with the design and electrical circuit of the crab, you can visit the page "As an antenna television amplifier to connect to the power supply".

If there is a desire, then the crab that is not inferior by technical parameters expensive samples of famous firms can be made with their own hands.

When connecting TVs via the crab, the level of the television signal, reaching each TV connected to it, regardless of whether the TV works or not, due to losses in the crab and the additional cable length will decrease. When connecting two TVs - by 30%, three - by 60%, four - 90%, and if an analog or digital television signal coming to the crab is already weak, then the image quality on all connected TVs can significantly decrease. Typically, the signal in cable television is quite powerful, and its level is enough for the normal operation of all connected to the TV crab.

How to connect an antenna cable
to the highway of the television signal at the entrance of the house

Typically, the television cable is paired on the roof of the house and further, after enhancing the main amplifier, branches down at home. Since there are different packets of television programs, then at the entrance to the entrance, the cable is branched with a filter crab, which is a crab with two outputs. From one output, the signal comes out unchanged, and from the second output is a trimmed filter at a high frequency. Thus, it is limited to watch all television channels for those who buy cheaper social packages. Therefore, two cables pass along the entrances down.

If you inspect the walls in your entrance, then you will definitely find a metal box on each floor, from which television antenna cables go to apartments. In modern houses, the boxes are no longer installed, and everyone is placed in wall lockers, in which case you will see a metal door with a lock. In these boxes there are subscriber tv television signal. If you remove the cover from the box or open the door of the locker, then you will see approximately such a picture. In the photo on the left, the coupler for the subscribers of the full package of television programs, and on the right for the subscribers of the social package.

According to the rules, the couplers must be fixed and grounded, but the cables to simplify the work do not. Perhaps this is better, since if the grounding is poor quality, then such a ground can create interference.

The couplers installed in switching boxes are not fundamentally different from crabs to connect multiple televisions, but they work somewhat differently. One F The connector is used to connect a cable that runs from the In (Login). The second OUT (output) is designed to transmit the signal to the next coupler, the installed floor below. The remaining F TAP connectors (removal), they can be from one to five, are designed to connect subscribers, that is, to connect television cables going to the apartment.

Not connected subscriber connectors should not be. In case of disabling one subscriber, allow for non-payment, it is allowed instead of a cable to install a F-connector with a loading resistance of 75 ohms. If you want to connect a new subscriber to a cable television network, then the splitter into two subscribers, as in this example, is replaced by three disconnect.

Thus, to connect the TV to the cable network, a segment of a television cable required length with the antenna F-connectors installed at the ends is. One F-connector of the antenna cable is connected to the subscriber coupler in the entrance, and the second is to the TV.

What is the difference between the crab from the coupler

In the crab, the power of the incoming television signal is usually divided into equal parts between all connected TVs. Unlike the crab, the subscriber in the reseller is allocated only a small part of the signal incoming signal, about 6 dB.

To ensure a sufficient level of the television signal entering the subscribers, the signal to the input of the branch is supplied from the main power amplifier, depending on the number of connected subscribers. In the aggregate, all the couplers installed in one entrance are crab with numerous branches.

Amplifier television signal

If, after installing the crab, the image has become unsatisfactory, then it will have to additionally put a TV amplifier before it. The amplifier is arranged in the same way as the crab, but in its case there are additionally installed more active elements (transistors or chip), enhancing the video signal. For a television amplifier, it will additionally need a power supply voltage, and it is necessary to take into account when choosing a place of installation.

The television amplifier must be installed as close as possible to the television signal source, since the amplifier enhances with a useful television signal and noise. The photo shows the TERRA HA123 television amplifier, designed to work in a home television network with one output, with the ability to adjust the gain from 8 to 28 dB. If possible, the ideal option is to place the amplifier directly in the box of the trunk splitter of the signal in the apartment.

If the TVs are located not far from the television amplifier, it is more expedient to install instead of a television amplifier and a crab only one television signal amplifier with multiple outputs. For example, Televes 5523 television splitter amplifier (Spain) having a gain of 16 dB and five outputs, which makes it possible to connect to 5 televisions to it.

If the signal is taken from an individual antenna, there are amplifiers that are designed to be installed directly on the antenna instead of matching the loop. The antenna amplifiers provide high-quality reception at a distance from the transmitting antenna to 100 km.

An antenna amplifier Depending on the signal level at the antenna installation point, it is required to select the gain by the gain for each specific case. The supply voltage for such amplifiers is supplied by a coaxial cable.

Fighting interference
Installation on the antenna cable of the ferrite ring

Sometimes after connecting to cable television or antenna, several TVs using a crab on some channels may occur in the form of chaotic arising white or black dots, running waves or grid on the screen. When receiving digital television, the image and sound can periodically disappear or completely absent.

This may occur due to the angular signal input of the high-frequency signal of the interference from the heterodyne, parallel to the connected TVs or other sources of interference. Interference is not excluded from televisions connected in neighboring apartments.

The level of such interference can be significantly reduced or even eliminated interference with the help of the installation on the Ferrite Ring cable.

Effectiveness of suppression of interference by a ferrite filter depends on the area of \u200b\u200bthe ring cross section: the area more, the more the inductance of the throttle made. The ferrite ring dressed on the antenna cable forms the throttle and together with the p-shaped high frequency filter forms a high-frequency. Maximum interference suppression will be achieved when you install two rings on an antenna cable at its ends.

Ferrite rings are sold in stores and there are two types: solid and consisting of two halves pressed into the plastic case with latches. But you can do without unnecessary costs. If you look at the interface wires that run from the computer's system unit to the printer, scanner, monitor and other peripheral equipment, you can see the thickening of cylindrical cables. These are ferrite filters.

Surely you have a dust old kinescopic monitor or there are unnecessary interface cables. It is enough to cut the plastic with a knife, remove the ferrite ring and install it on the antenna cable. After installing a frit ring, the interference on the TV screen will no longer interfere with viewing television programs.

It is difficult to imagine life in our world without information technologies, such as the Internet, television and telephone. They were reliably rooted in society and represent an important attribute of comfort. However, not all users know how to connect digital TV at home, so when setting up the device, they often occur certain difficulties.

general information

Recently, the growth of the popularity of digital television is noticed. In contrast to traditional analog systems, this type of TV has a massive weight gain, providing maximum image quality and sound.

And when it comes to connecting the "digits" to the TV, many people think that this is a very complex process that requires professional assistance. But in fact, everything is solved in a short time and does not require much effort. It should be noted, that the market offers two varieties of digital TV:

Cable.
Essential.

The first type is connected through a special television cable, and the second implies the presence of a special antenna. When there is no digital receiver on the TV, it will have to buy it. In stores, these devices are sold in the form of a special console.

If the home TV is already equipped with a digital receiver, then everything that needs to work is to install a smart digital TV card with connected service provider. After that, the device will automatically find a list of channels and save them in memory.

In the absence of the receiver, you need to buy a television console. Very good if the HDMI output is provided on the TV, since it is transferred to the best picture and sound.

Advantages of modern systems

Despite the development of digital television systems, many people still use cable television. It also gives a good picture and unlimited possibilities in choosing channels. However, such TV has to pay a subscription fee, which, unfortunately, is constantly growing. As for digital equipment, it has the following advantages:

Receiver selection

To successfully launch digital television in a private house, you need to buy a special device - a digital signal receiver. It uses a device that works according to the DVB-T2 standard. As already mentioned, many modern TV models are already equipped with a built-in digital TV module, so the task may noticeably simplify.

The possibilities of the device are determined by its price range. The most accessible receivers do not support additional functions, while more expensive devices have a small amount of memory and are able to work with flash drives. Also in some models there is an opportunity to record streaming video on removable media.

Given the large variety of digital receivers, choose the appropriate option is problematic. But if you are guided by some advice and recommendations, such a task can be solved without special difficulties.

If you lose the technical moments and complex radio mechanical properties of digital tuners available on the market, then it will remain to explore their aesthetic features and a set of functions. This approach will simplify the choice of high-quality device and will make it successful.

Wanting to purchase a digital receiver, it is important to decide in advance what functions are needed for television, and from what you can refuse. The most key and necessary functions include:

Ability to view television channels in DVB-T2 format.
The ability to use the tuner as a media player to start audio files, viewing images and other content.
Access to the global network (some models are able to work with youtube media services, IPTV, online cinemas, weather and news resources.).

If the receiver model supports the above functions, it remains to deal with some visual features. When choosing a case material, it is desirable to give preference to devices from high-quality metal or plastic. It is known that these materials have maximum reliability and a long service life.

On the front panel of the tuner, control buttons must be placed, as well as various light indicators. A USB inputs and other high-tech interfaces must be present at the rear.

Purchase antenna

For DVB-T2 receivers, conventional essential antennas are suitable, capable of functioning in the DMB range. In this regard, many viewers believe that it is not necessary to buy a special antenna, stopping only on the purchase of the console. But this is a huge misconception, because the old equipment cannot produce a fairly high-quality signal and convert an analog channel into digital. The translation of the digital stream occurs in parallel with the analog in completely different frequencies.

There is another myth that states that powerful digital consoles can transmit the image at all without an antenna. But in practice it is impossible, although with good coating it is enough to install a small piece of wire in an antenna entry to the TV to start taking a signal. But such cases are single.

If the house already has an essential antenna, but it does not transmit the image, then you need to perform several actions and diagnose the equipment. In the absence of such a device, it is better to buy a more powerful model for digital TV.

It should also be noted that external antennas are always more powerful, even if advanced receivers and amplifiers are installed in the latter. Unfortunately, many viewers buy compact models in the electronics network stores, although a good outdoor option can be purchased for a similar cost.

As for indoor antennas, they can only be effective in cases if the television tower is within the settlement. With a substantial distance from the city, such equipment will be ineffective and even useless. For such conditions will have to buy an external antenna. Before purchasing, it should be studied in detail the digital signal cover map to determine where the nearest broadcast points are located.

Additional elements

Also, for the successful operation of digital television, it is necessary to buy several additional elements. Among them - the amplifier. In many indoor and external antennas, this device is already present, and the receiver only enhances the signal. In this case, the transfer of information is confident and without failures.

However, it is often necessary to buy a separate amplifier. To make sure you need it or not, it is enough to check the quality of the DVB-T2 receiver signal by entering the system settings with the corresponding scale. If after connecting the antenna to the receiver, the signal level will be 75%, and the quality of the picture will be quite normal, it means that the amplifier may not be needed. If the indicators do not reach this mark, and the image is transmitted with significant interference, the purchase of the amplifier will become a prerequisite.

Also, to connect a digital TV, you need to purchase a coaxial cable that is capable of transmitting a signal from the antenna directly into the receiver. It is desirable to give preference to models with a copper circuit and the screen, since they are characterized by high quality of the image, a long service life and reliability. When choosing a cable, you should pay attention to his braid, because it is stronger, the longer it will last.

If there is an HDMI connector in the receiver, you must purchase an appropriate cable to connect to the TV. Specialists argue that this standard guarantees the best quality Transfer pictures and sound. If there is no HDMI, you will have to use traditional SCART, RCA cables, etc.

Installation of instruments

When installing the digital television system, first of all, you must install the antenna. If the room model is used, it must be positioned by the window, since there is a better signal level. As for the external elements, they are installed on the balcony or near the windows using brackets.

The antenna equipment is directed towards the placement of the TV television, which will positively affect the quality of the reception. Then you need to pave the cable from the antenna to the receiver. In the absence of a stable signal, the antenna is placed on the roof of the house and rotate towards the TV television. To properly determine where there is a television tower, it is enough to see where the adjacent antennas are directed.

Next, you need to unpack the receiver and attach an antenna cable to it. Turning on the power of the receiver, you must perform a number of initial settings by selecting the appropriate language, time and time zone. With the support of the function of automatic scanning channels of special difficulties in the setting, it will not arise. The system will perform everything yourself.

At the setup stage, you need to find the channel of the first multiplex and scan it, and then repeat similar steps with the second device. According to specialists, in each of these multiplexes there are about 10 channels. During the procedure, you should pay attention to the level of the signal. It will be displayed in the settings menu in the form of a special scale. With a too weak level of reception, it is necessary to twist the antenna and find the optimal direction, guided by the data from the scale.

Setting up digital television

How to connect digital TV is a topical topic for modern television viewers, because after buying the appropriate devices, many users do not know how to configure them correctly. To quickly solve the task, it is necessary to follow step by step management:

It is worth noting that over time the list of available channels can be updated, so it is necessary to periodically re-scan in search of updates. If unforeseen problems occur at the tuner setting step, you must again explore the instructions. If the trouble did not disappear, then you should seek help to the supplier of equipment and services.

Understand how to connect free digital TV to the TV, easy. To do this, it is enough to follow step-by-step instructions that are attached to the receiver, comply with the advice of professionals and be attentive. The rest of the system will do it yourself.

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