Since January 2019, Russia has been switching from analogue to digital television signal. This allows not only improving image and sound quality, but also increasing the number of free channels.
Switching to a digit applies only to broadcast television broadcasting. 99% of households in Moscow are connected to cable television. The transition to digital broadcasting will also not affect those who have satellite or Internet television - they already have digital broadcasting.
The final transition from analogue broadcasting in Russia is happening in stages. In Moscow, it was carried out on April 15, 2019.
In this regard, those who watch TV through the antenna, in some cases, you need to tune in to receiving a digital signal.
2. How to understand if I have digital television or not?
If, when you turn on the TV, instead of the usual TV programs, you see a video on how to switch to digital, then you have analog television, and you need to perform a series of actions.
The absence of a video clip means that:
- you have originally digital television (satellite or Internet TV),
- you’ve got terrestrial television, but you’ve already switched to digital broadcasting,
- you have cable tv. Moscow authorities have agreed with cable television operators to keep analog broadcasting in cable. But if you wish, you can also switch to digital broadcasting in cable.
Note: if you have several TVs at home or at the cottage, they can receive a TV signal in different ways. For example, in the living room, the TV is connected to cable TV, while in the kitchen, reception is via an antenna.
What are digital TV tuners
A digital set-top box or decoder is an electronic device that connects to a television to receive programs broadcast in digital format. The prefix has several connectors, the most important are: an antenna connector (for inputting a TV signal from an antenna), an RCA or SCART (Euro) connector, and an HDMI connector.
A digital set-top box in store prices can be called a “receiver” or “tuner”. This is not a mistake: the English word “receive” means “accept,” and the word “tune” means “tune.”
Each receiver has a chip (ROM), this chip controls the console. This chip is usually called the "controller", although some call it the "processor". The controller operates on its own, developed by people, firmware, and in this firmware there are flaws, shortcomings. Therefore, the manufacturer, trying to improve the parameters of the digital set-top box, releases an updated version of the software. Which through the USB input in the receiver can be read and replace the working version with a new one.
Why does the TV need a digital set-top box
Owners of new TV models can not worry - most of them already have a built-in decoder. But those viewers who have a receiver for several years and who do not plan to change it must have a set-top box to watch digital television.
It will allow watching twenty Russian channels in digital format without concluding any agreements with digital television platforms. Their acquisition is not associated with further payments. It is enough to connect the set-top box to the antenna and the TV, and everything is ready to receive free digital television programs. Many models of receivers have advanced features. Representing the center of home multimedia entertainment.
Digital Broadcasting Standards
There are four main standards for digital transmission of a television signal; they differ in modulation and transmission frequency:
- DVB-S and DVB-S2 - satellite broadcasting,
- DVB-T and DVB-T2 - terrestrial broadcasting,
- DVB-C and DVB-C2 - transmission in cable networks,
- DVB-H and DVB-SH - terrestrial and satellite broadcasting for small portable gadgets, such as mobile phones or PDAs.
The delay in introducing digital broadcasting in Russia has its good points. Unlike many countries of Western Europe, we immediately introduce a more advanced digital signal coding system. Compared to the old compression system DVB-T - MPEG2. Application of the advanced DVB-T2 standard with MPEG-4 stream compression. Provides additional information transfer in the same volume of the multiplex.
MPEG, as a compression method, is used to encode audiovisual information, including video and music. The first version was designated as MPEG-1, the later versions are MPEG-2 and MPEG-4. The latter provides improved coding performance. Only with MPEG-4 is it possible to transmit high-definition television HDTV.
Different countries use different types of coding. For example, in Germany, as in most countries of Western Europe, which previously joined the digital technology. Television is broadcast in DVB-T format and MPEG-2 compression standard.
The DVB-T2 standard provides for broadcasting television programs in high definition HD (1920 × 1080 pixels) or medium definition SD (720 × 576). Multi-channel audio encoding with the advanced Dolby Digital standard.
Even the simplest TV set-top box for receiving T2 digital television can process a television signal in the DVB-T2 and DVB-T formats, in other words, it shows us “T2 television”. More complicated and more expensive consoles can also process the DVB-C signal (show digital cable). They can also receive signals from the Internet via IPTV, WebTV (show video from the Internet).
How many channels does a digital set-top box for a TV “catch”?
You know what channels are available in Russian digital television, but you are interested in what you can see, which channels your digital set-top box will catch on your TV. The external receiver receives the television signal via the DVB-T2 protocol from the antenna, and can only catch what is broadcast in the country's digital airspace. What are these channels? Twenty television channels are broadcast in Russia (not all towers are connected to 20 channels). Using manual and automatic search, the decoder will detect and then decode all digitized channels and direct their television receiver.
You are not able to seamlessly and efficiently accept the “figure”, the image is scattered into squares. That with a probability of 99% your TV or digital set-top box is not to blame for anything. Do not puzzle over how to find a “more sensitive" tuner. Just tackle the antenna:
- Check the connection of the connectors.
- Fine tune the antenna.
- Lift the antenna a little higher.
- With a passive antenna, supplement it with an amplifier (provided there is a noisy signal).
It did not help - change the antenna. This option is more correct and cheaper.
Characteristics of digital consoles
The stores have models of different categories. Expensive models have more options than just receiving a digital signal. Navigate in the selection of a digital set-top box for a TV, not on the name of the decoder, but on its capabilities.
Resolution and Standard
To watch digital terrestrial television, you need a DVB T2 set-top box that processes a television signal encoded in the DVB-T2 standard. The DVB-T or DVB-C standards do not work here, and the fact that the tuner supports them or does not support them is not important. Of course, supporting a DVB-C standard by a receiver can be useful for receiving cable television if your cable provider gives you a digital signal. But a digital TV signal from a cable provider in your home can be encoded, and tuners with a low cost do not have a card reader for a decoding card.
To play photos and videos from removable memory, the tuner must support the sound, video and photo format in the most common versions.