DVB-S2 on LG TVs. How to watch satellite TV on an LG TV without a receiver (tuner)? Equipment for digital television is what you can buy in our store

The development of digital technologies cannot but affect the search for new standards in SAT broadcasting. This is how the new DVB S2 standard appeared to the world. It is worth mentioning what the DVB S2 standard is.

The abbreviation DVB-S2 is, in some ways, an updated digital television broadcast format. This format replaced its predecessor - DVB-S. Distinctive Features The two formats are, in fact, hidden in many ways, but many of the changes are not clear to the average person. If you convey the essence of the new standard to the user on in simple language, then the main innovations can be listed in this form:

• The new standard supports high-quality modern video decks;
• Format endowed increased speed connections, which allows you to reproduce high-resolution images;
• The new standard is somewhat more reliable regarding the plan for transmitting the broadcast signal from the source to the end user;
• Many innovations have been joined by direct access to Internet networks, as well as a method electronic collection news.

It is worth mentioning that the new DVB-S2 format is compatible with the previous technology - DVB-S, which does not mean a complete abandonment of the old and understandable one.

DVB S2 standard: the goal of developing new technology

New satellite standard DVB S2 successfully coped with the task of covering the shortcomings of previous standards: low speeds DVB-S standard and low distortion SAT standard.

First of all, the emergence of DVB-S2 technology was spurred by the planned mass launch of HDTV, which required the development of channel coding formats that would more efficiently use the frequency resources of satellite DVB-S2.

At the stage of typical developments, the operation of satellite-band receiving systems that were influenced by atmospheric conditions, in particular moisture, was no longer satisfactory - it was necessary to strengthen the protection against interference.

Interactive, addressable satellite networks still required more transport resources. To optimize the use of resources, it is necessary to adapt the parameters of each address stream to the conditions of a specific recipient. But previous standards did not provide this. But support for the DVB-S2 format made it possible to transmit more on a standard channel useful information For various services, which are broadcast on one channel. Besides satellite tuner fully provided support for compatibility of the old and new standard.

Satellite broadcasting DVB-S2: technology characteristics

This situation served as the basis for the creation of the universal standard DVB-S2. On its basis, networks for distribution are provided:

• on the network for professional awareness - support for digital TV transmission from studio to studio, distribution of signals to on-air repeaters, thanks to satellite communications to deliver high-quality images on the TV;
• DVB-S standard 2 is conveniently used to support the formation of a network for data transmission or the creation of IP backbones.

The incompatibility of the mechanisms included in the DVB-S2 receiver turned out to be incompatible with some old standards. Then the developers introduced two new modes into the standard. The first, which is downward compatible, but not efficient enough, the second, although it uses all the new features, does not allow the use of a DVB-S tuner. The first is best used when providing traditional services, the second - for use in professional networks.

One standard - different schemes

This provision of the new DVB-S2 standard has four possible modulation schemes. The first two, QPSK and PSK, are used in broadcast networks. But the speed schemes 16 APSK 32 APSK belong to professional networks, where weaker ground-based transmitters are used.

To protect against interference, this standard, as before, uses data interleaving and the imposition of a two-level code for direct correction. In most cases, code mode allows you to fix up to 12 errors, and in other cases, 8 or 10 errors. It also depends on the quality level that the receiver provides. Support for a normal image on the TV depends on this. At the same time, each tuner used must correspond to its characteristics, which should provide support in choosing.

The satellite receiver, built in many cases into the TV, DVB-S2, provides for packetization of the stream at two levels, through the introduction to solve the synchronization problem when the receiving system is supported in working conditions with low level signal to noise ratio. The tuner must be adjusted according to satellite tuning according to the DVB-S2 standard. The TV's support for clear images depends on how well the receiver complies with the standard.

The latest generations of devices have a built-in satellite tuner of the DVB-S2 standard in the TV. It will receive a satellite signal, but the receiver and antenna itself are not enough, because the TV does not have a decoder, and most satellite channels encoded. Clear reception can be supported by installing a decoder. Therefore, do not rush to believe sellers that a receiver installed on the TV will solve the problem.

Digital DVB-S2 tuner built into the TV

You also need to know what standard you will be watching; this is what the TV receiver should have, and a new generation receiver is desirable. Here we need support and good advice specialist regarding what the receiver should be like. But it will not be superfluous to know that basically the receiver should be of the DVB-S2 standard and therefore the receiver of another may not be similar.

There can often be confusion when purchasing a TV. So, a completely different tuner with a typical name may be built into the TV, the connection of which with the satellite has nothing in common:

So in abbreviations it is worth distinguishing only one letter, which is endowed with a fundamental meaning:

• The letter T stands for terrestrial TV;
• C – cable;
• S – satellite.

So the installation work regarding the installation of antenna equipment is virtually indistinguishable from standard installation when a satellite external receiver is used. TVs with built-in satellite receiver, support protocol – DiSEqC 1.0, which means ensuring reception satellite signal from at least four satellites, using DiSEqC 4x1 switches.

Connecting and setting up DVB-S2 signal reception

As an example for connecting and setting the standard in question, we will use an LG TV (model 32LN575U), which has a built-in DVB-S2 tuner. So in retail sales DVB S2 USB tuners are also available, easy to use on mobile devices.

In fact, any TV that supports the DVB-S2 standard also supports the module itself, into which a pay-TV access card is inserted.

Likewise, when using a regular satellite dish, you should connect it to the TV into a special connector.

As a satellite input source, you should select “Satellite” and click “Next”.

The next step is to select a satellite and configure its display. You can click on the “Change satellite settings” section in order to make settings for the satellite on which you want to search for TV channels. But it is also permissible to click “Next” for those purposes in order to search for TV channels on an already installed satellite.

Modern television receivers have built-in receivers. DVB-S: what is it on TV and why is it needed?

Among all modern TVs There are many models that have a built-in satellite tuner of the DVB-S2 standard. This device allows the TV to receive signals from the satellite via satellite dish without separate connection external device– receiver (tuner).

But the tuner built into the TV alone will not be enough to watch satellite channels. Almost all TV channels broadcast via satellite are not broadcast in open format, but in one encoding or another. To solve this problem, there is a special device - a CAM module, which is accompanied by an access card for a specific operator. The CAM module is installed in the TV, and the access card is installed in the CAM module. And only in this case all channels of the operator whose card was purchased become available.

Most models of plasma and LCD TVs have a special slot for an access module on the rear panel. But this does not mean that there is a built-in satellite receiver inside the TV. This device is in in this case used for decoding terrestrial (DVB-T) or cable (DVB-C) channels digital television. About availability in specific model The TV's built-in satellite television receiver (DVB-S or DVB-S2 standard) can only be reported by the salesperson in the store, or you can find out on the Internet. Moreover, it is necessary to keep in mind that to watch channels in HD quality, the DVB-S standard is not suitable; you need a DVB-S2 receiver.

Differences between DVB-S2 and S-standard

The DVB-S, DVB-S2 standards imply the use of special keys for broadcasting modern satellite television. They transmit TV signals in compressed form to the receiver. Satellites transmit signals in the centimeter frequency range. The highest density of TV channels is in the KU band, frequency band 10.7 to 12.75 GHz. The DVB-S2 standard makes it possible to broadcast a signal 30% faster, but it digital codes cannot be decrypted by the DVB-S receiver.

The DVB-S2 tuner is designed to receive standard and HD quality TV channels. This tuner can be configured to connect to the Internet.

What the DVB-S2 standard is capable of

Any broadcast program that is transmitted via satellite to the receiver is suitable for this standard. This standard differs from its predecessor in that it is capable of:

1. Firstly. support both standard SDTV and HDTV programs in high definition.
2. Secondly, used to connect to the Internet;
3. Third, provide access to vocational programs;
4. Fourth, ensure the connection of any devices to the Network for the purpose of distributing content.

Upgrading the DVB-S standard to the DVB-S2 standard was carried out to improve the quality and transmission speed digital information. For example, without a receiver with the DVB-S2 standard, the broadcast frequencies of HDTV channels will not be available.

Install the DVB-S2 standard and connect to digital broadcasting possible today. This connection option makes it possible to receive the selected package of TV channels from a satellite. Receiver this standard is universal device, which can be used to connect a TV to digital television, and to connect any gadget to the Internet.

The HDTV frequency decoding function is available in most TV models today. A DVB-S2 receiver allows you to better use their capabilities. Otherwise, why would you buy a TV with a large plasma screen, when each program looks exactly the same on a regular screen. Reception and the ability to decode high-definition frequencies on a TV is very useful feature, but this requires an HDTV signal source. The keys in it are provided by the DVB-S2 standard.

What is DVB-S?
DVB-S is one of the most common types of signal for broadcasting television and access to the Internet; the signal is transmitted from satellites located in non-geostationary orbit.

System A (standard DVB-S) developed by a European consortium DVB Project and is intended for the delivery of multi-program TV broadcasting services or HDTV V frequency ranges fixed and broadcast SAT services (10.7...12.75 GHz) with their direct reception on home integrated receiver-decoders, as well as on receivers connected to systems with SAT collective TV antennas SMATV(Satellite Master Antenna TV), and systems cable television(SKT) for primary and secondary distribution of TV broadcast programs. Currently, almost all digital SAT TV broadcasts to all five continents are carried out according to the standard DVB-S.

The main advantages of this signal?
The main advantage of DVB-S is that it can be connected almost anywhere in the world.

How to connect satellite broadcasting?
In any city there is a company that deals with satellite equipment. The most widespread in the field of satellite television is the Tricolor-TV company. (link to tricolor) In the Internet environment, preference is given to the SpaceGate provider.

What equipment is needed to connect? satellite internet and television?
To connect to satellite Internet, you will need:
- satellite dish,
- DVB-S card,
- mobile phone with gprs,
- Cable,
- Converter,
- Bracket,
- F-ki, anchors, heat shrink.
To watch satellite television, a DVB-S receiver and a satellite dish will be enough.

Where can you buy satellite equipment?
Satellite equipment is now available in most electronic and digital equipment stores (Eldorado, Techno-Sila). You can also order it in the online store.

Lack of satellite internet is his attachment to the land line. Of course, there are converters designed for both reception and transmission, but they significantly increase the cost of satellite equipment. And of course, the influence of weather conditions, the signal becomes much worse during heavy rains and cloudy weather.

New standard DVB-S2. What are the main differences from DVB-S.
The dvb-s2 standard is much faster and better quality than its predecessor. The data transfer speed on it is 30% faster. The new standard significantly saves frequency resources when transmitting TV programs and satellite Internet. An important advantage of the new standard is the fact that when working with BPSK modulation it will be possible to receive a program with a signal level lower than the noise level.

List of DVB-S2 cards.
TechnoTrend or TT: 3200 PCI (aka SkyStar HD)
TT-3600 USB2.0 (SkyStarHD/USB)
TT-3650 USB2.0 CI
Hauppauge HVR4000 PCI(DVB-S/S2/T+analog TV)
Nova HD-S2 PCI
Twinhan 1041 PCI with CI connectivity

Why do we need the DVB-S2 standard?
One of the reasons for the launch of dvb-s2 was the massive introduction by satellite TV providers of high-definition TV channels (HDTV) into their packages.
Unsatisfactory performance of DVB-S with K-band. The performance of this range depends on weather conditions. DVB-S2 is more resistant to interference and can provide more stable reception.

Connecting satellite TV is often accompanied by purchasing a new TV for your home. Many television receivers of older models cannot work with modern technologies broadcasting. However, choosing a new appliance today requires a lot of knowledge just to understand the functions built into it. For example, how can you understand, when you see DVB s2 among the characteristics, what is on the TV? Let's try to figure out this mysterious abbreviation.

What is DVB-s2?

DVB is one of the modern digital television broadcasting standards, widely used by many companies. Its use allows:

• reduce the amount of satellite signal distortion;
• increase the clarity and brightness of the picture on the screen;
• Reduce to zero the likelihood of image and sound freezing.

Thus, any TV with a DVB s2 tuner gives the user the opportunity to receive higher quality television broadcasting. But in addition, these devices have one more feature: the built-in tuner allows you to do without connecting an external receiver. Naturally, only if the tuner is selected correctly.

How to choose a DVB TV for satellite TV?

Many television receivers are equipped with modules that allow you to work with the DVB format. But when purchasing, you need to clarify the module labeling:

• DVB t or t2 can only work with digital terrestrial broadcasting;
• DVB c is intended for cable television;
• DVB s and s2 are designed to interface with satellite TV.

Accordingly, to provide access to broadcasting via a satellite dish, you need a TV with a built-in satellite receiver. Moreover, it is desirable if the built-in module is trip S2. The DVB s variant is being phased out as it cannot fully meet modern requirements satellite operators. So, there is a high probability that soon no company providing broadcasting services will work with it at all, and the tuner will simply be useless.

What is required to set up broadcasting?

Despite the fact that the price of TVs with a built-in satellite receiver today is noticeably higher than the market average, we will warn you right away: to watch TV on them, the user will require additional expenses. Naturally, first of all you will have to purchase satellite dish and a cable for connecting it to the television receiver. We specifically mention this because on many forums there are indignations from users of television devices with DVB tuners, who sincerely believed that such a cool TV did not need a dish. But the matter will not be limited to purchasing an antenna.

Nuances of the built-in tuner

As field testing has shown, the built-in receiver on a TV is capable of receiving only free, unencrypted channels from any operator. This usually amounts to about 10% of the entire broadcast network of companies providing television broadcasting services.

Important! But when correct setting you can watch free channels several broadcast operators at once.

The bulk of programs and packages to which, for example, the Tricolor TV company provides access, are encrypted. To access them, you need keys that are embedded in the operator’s smart card. And the DVB s2 module is not intended for contact with a smart card.

How to set up broadcasting?

So, due to the nuances described above, the owner of, for example, a DVB s2 module on a Samsung TV must do the following before setting up his existing television receiver:

• purchase separately a CI module suitable for your TV;
• install the purchased module on the television receiver;
• enter into an agreement with Tricolor TV;
• purchase a Tricolor smart card corresponding to your region of residence;
• install a smart card in the CI module;
• register the equipment with the operator;
• wait for the registration data to be updated.

Concluding an agreement and purchasing a card gives the subscriber the opportunity to gain access to the company’s encrypted packages and channels. Naturally, you will have to make a monthly payment for them - this is unlikely to be possible. But without purchasing a smart card and a module for reading it, any user will be able to view through the DVB module only the same channels that were available to him with a regular indoor antenna. There will be no point in satellite television.

Pros and cons of DVB-S2

Before wondering where to buy a TV with a built-in satellite receiver, we advise future clients of satellite operators to think about the advisability of such a purchase. In principle, these devices can be replaced by TVs with CI or CAM modules, which have the same capabilities, but are noticeably cheaper.

The advantages of working with DVB modules are usually mentioned:

• saving on an external receiver;
• absence of unnecessary wires in the apartment;
• more high quality broadcasting.

The first two points can also be applied to devices with. In addition, they will not need to be supplemented with anything, whereas a DVB TV will require additional equipment with a slot for a smart card. As for the quality of picture and sound, modern satellite TV operators try to maintain it at the same level even on the oldest models of receivers.

Among the disadvantages of TVs of the updated format, it is worth noting their (still) low prevalence. Most instructions for setting up Tricolor television are designed with external receivers in mind. Many remote support operators, and even installers visiting the scene of a breakdown, are not familiar with the features of DVB tuners and will not be able to work with them correctly. That is, even initial setup Installing a device of a new format can be quite difficult, not to mention possible breakdowns. Before deciding to purchase a modern television receiver, we strongly advise you to weigh all the advantages and disadvantages listed in the article.

What is DVB-S2?

DVB-S2 (EN 302 307) - digital system satellite transmission developed by the DVB project. It allows the use of the latest modulation and coding technologies, resulting in performance that is close to the theoretical limit for such systems. Satellite transmission was the first area addressed by the DVB project in 1993, and DVB standards form the basis of most digital satellite television services around the world and therefore digital television in general. DVB-S2 will not replace DVB-S in the short or even medium term, but it makes possible the provision of services that could never be provided using DVB-S, and does so at a level of performance that DVB-S3 will not appear for another for a very long time (if it ever appears).

Prerequisites for creation

The world's first digital satellite television services were launched in Thailand and South Africa in late 1994, both using the newly released DVB-S system. Over time, she became the most popular system delivery of digital satellite television, and there are currently more than 100 million receivers in use worldwide. However, the system was developed more than 10 years ago, and it is not surprising that the industry eventually decided it was time for an update. Thus, technical group DVB, under the chairmanship of Dr. Almerto Morello, developed DVB-S2. During this work, the technical team took advantage of advanced channel coding, modulation and error correction technologies to create a system that would enable the creation of a number of new commercially successful services; for example, in combination with the latest technologies DVB-S2 video compression will enable large-scale commercial launch of high-definition television broadcasting.

How does this work?

The original DVB-S system, on which DVB-S2 is based, defines the use QPSK modulation, as well as various tools for channel coding and error correction. Further additions were made with the advent of DVB-DSNG (Digital Satellite News Gathering, aka digital satellite news gathering), for example, using 8PSK and 16QAM modulation. DVB-S2 benefits from previous developments and has the following technical characteristics:

• Available four modulation modes: QPSK and 8PSK, intended for broadcasting on non-linear satellite transponders operating in near-saturation modes, and 16APSK and 32APSK, requiring a higher C/N ratio, and aimed primarily at professional applications such as news gathering and interactive services.
• DVB-S2 uses very powerful circuit forward error correction(FEC), which is a key factor in achieving excellent performance when high level noise and interference. The FEC system is based on combining BCH (Bose-Chowdhury-Hocquingham) coding with internal LDPC (Low Density Parity Check) coding.
• Adaptive Coding and Modulation(ACM) allow you to transmit parameters that will change for each frame depending on the specific reception conditions for each individual user. It is mainly aimed at unicast interactive services and professional point-to-point applications.
• DVB-S2 offers additional modes backward compatibility which use hierarchical modulation to allow remaining DVB-S receivers to continue operating while new receivers are provided with new ones additional services and opportunities.

DVB-S2 provides excellent performance, approaching the Shannon limit, theoretical maximum speed transmission of information in a channel for a given noise level. This system can operate from -2 dB signal-to-noise ratio (i.e. below the noise floor) with QPSK to +16 dB using 32APSK. Table 1 shows the increase in efficiency that DVB-S2 provides compared to DVB-S under typical TV broadcast parameters with a gain of usable speed by more than 30% in each case.

Market State

Officially published as an ETSI standard in March 2005, DVB-S2 was quickly adopted by the industry to provide new services. In Europe and the US, a number of satellite television operators use DVB-S2 in combination with MPEG-4 AVC video encoding to deliver high-definition television services (e.g. BSkyB in the UK and Ireland, Premiere in Germany, Sky in Italy, DirecTV in the US). DVB-S2 is also used by pay satellite television operators in other countries in the Americas, Asia, the Middle East and Africa.

DVB-S2 has also been adopted for professional use. The European Broadcasting Union's (EBU) Eurovision network, one of the largest charity networks, has been completely upgraded from DVB-S to DVB-S2. Testing new system in the spring of 2005 showed an increase bandwidth by 20%, resulting in the EBU calling for the upgrading of networks for events such as the 2006 FIFA World Cup to DVB-S2.

Two important factors guarantee the continued growth of DVB-S2 deployment. Firstly, in August 2006, the International Telecommunication Union (ITU) study group on satellite transmission issued a recommendation that only DVB-S2 was considered as the preferred option for "Digital satellite system with flexible configuration (TV, audio and data)” (ITU recommendation number BO.1784).

Secondly, in late 2006, DVB-S2 patent holders announced that licensing costs for DVB-S2 equipment manufacturers would not exceed US$1 per consumer device, or US$0.5 for 500,000 or more devices. The commitments provided in this announcement are expected to facilitate the rapid adoption of DVB-S2 by the global satellite broadcast and telecommunications industry.