Why the DVI D VGA adapter works. VGA-DVI adapter for monitor: description, appointment. Can easier buy a new monitor

The term DVI-D VGA is most often called small devices (adapters), with which old monitors with analog connectors are connected to on computers transmitting a digital signal.

A feature of such a connection is not quite one hundred percent compatibility, due to which far not every such adapter actually works. And, although these devices are worth not too expensive - On average, about $ 2-5 - in most cases it is better to give preference to another device called a signal converter.

Features DVI-D and VGA connectors

The DVI port possess the computers and laptops that support special technology - Digital Visual Interface or "Digital Interface". She enjoyed to transfer video to peripherals Data output - from televisions and up.

Using technology allows you to get a signal with best qualityThat will not be able to convey with the help of an outdated interface. For comparison, the maximum resolution supported by VIDEO Graphics Array technology is only 1280x1024 pixels. For DVI-D similar the indicator is 2560x1600 pixels.

New DVI technology is already used practically on all modern monitors and output devices. However, the transition to a newer and perfect way Data transfer created a certain problem to users of those monitors that only have a VGA connector.

After all, in the 2000s most even enough large screens With a diagonal of 22-24 inches were completed only by old ports. And you can connect them to a modern PC, only if you use a special adapter for this.

There are 3 types of DVI connector:

    providing only analog data transmission DVI-A interface;

    for data transfer and digital, and in analog format - DVI-I;

    digital image only - DVI-D.

Due to the fact that computers transmit a picture in a digital format, most of the modern video cards have only one type of connectivity - DVI-D. Outdated, equipped with DVI-I interfaces, can be connected using a special cable.

Provide the same connection to the VGA screen, which has smaller permissions (analog and no longer supporting even FullHD format) with simple cables Or adapters are not always possible.

Compatibility issues

If you compare the signals that go from the DVI-D port, we can conclude about their differences. And in order to properly transfer information to digital video An analog monitor can be used by adapters from one interface on another - or signal converters with the same ports. Considering the possibility of buying an ordinary DVI-D / VGA adapter, You should know about compatibility issuesWith which you have to face most users.

The main advantage of this small device lies in his price. However, due to the lack of contacts C1-C4 (4 rectangular holes on the DVI -D connector, the possibility of analog data transmission is missing. And, if, for example, from the port of DVI-I or DVI-A, such data to send after all possible, the probability of appearance Images on the monitor from the digital interface will be minimal.

The low cost of adapters leads to the fact that many users buy them for their old monitors that need to be connected to modern cards. Sometimes this method is triggered. But, due to the fact that the "pinout" (or the location of the connector) at the old and new interfaces differ, the signal may not be.

Images do not appear on the screen due to the inability to convert the signal using a conventional splitting. If the picture still occurred, most likely, the video card is still a DVI -i or DVI-A interface. That is, supports and analog data transmission.

Solution of the problem

The problem with incompatibility is quite serious - but quite solved. Due to the fact that the data may not be simply transmitted, but also transformed, the other device has been invented by specialists, called the DVI-D converter or the VGA converter.

In appearance, it really can resemble an ordinary adapter, but equipped with an additional, increasing the size of the device, module.

Fig. 6. Converter DVI-D VGA.

The device tasks includes converting a digital signal to analog. And, at the expense of a more complex design, there is such a converter several times more expensive. On the other hand, the question arises - why are sold in online stores adapters DVI-D VGA?

Answer it is easy - the reason is the incompetence of some sellers. Or, perhaps, in the desire to sell more productnot having those functions for which they buy it. In fact, on sites where reliable information about adapters and cables is indicated, other parameters can be seen in the description - the transition is carried out not with DVI-D, but from DVI -i on VGA.

Converters

Exists whole line Data converter models with DVI-D on VGA. In most cases, it requires a separate power, since the device is not a simple adapter, but a full-fledged device with a board located inside. This feature makes the converter more expensive - but it does not make sense in this case.

The capabilities of the digital signal converter to the analogue information from the modern video card with outdated monitors is included. Or the same far from new (or just inexpensive) TVs, which can also be used to display information from a PC or laptop.

You may need a converter and when connected - although most of them have long already have, which is also digital and compatible with any modern video card. For such a device, such adapters will not be needed.

Features of signal conversion

Among the converters available in the market, you can find devices with such characteristics:

    dVI -D connection support for VGA displays with a maximum image size up to 1920x1200 pixels and minimum 800x600 pixels;

    the input of the converter has 21 IDUs, output - 15 PIN;

    maximum frequency - 60 Hz;

    the length of the converter cable - from several centimeters to 1.5-1.8 m;

    cost - from $ 6.

You should know: The converter is unidirectional. I.e can convert a digital signal to analog - But not the opposite. If you need to connect a VGA video card to a DVI-D-monitor, you will need another, reverse converter. Although it will be not too high quality.

In addition, buying a converter, it is worth considering its incompatibility with DVI-I and DVI-A interfaces. And, most converters require a separate power and output of audio with extra cable. Although in cases where the cable connecting the computer and the output device does not exceed the length of 1-1.5 m, it is not necessary to connect it to the network.

It is advisable for correct operation to support the same update frequency that the converter provides. And it is recommended to use displays or TVs with a diagonal of no more than 40 inches - otherwise the stripes may appear on the image.

Important: If the signal is converted not only with DVI-D on VGA, but also to other formats, it is worth purchasing a multifunction converterSupporting several types of interfaces.

Fig. 10. Multifunctional converter.

conclusions

Despite the assurances of sellers, such converters use them not. The probability of correct connection and data transmission in this case does not exceed a few percent - and, according to the assurances of some experts, is generally zero. Much more efficiently will be purchased a converter, which is guaranteed to perform its functions by connecting to analog device Output.

You will need

  • Internet, very old video card with support for TV-OUT OVER D-Sub, D-Sub M connector, RCA connector, coaxial cable 75 ohms, soldering supplies

Instruction

On the Internet you will find a ready connector vGA Tulip.But unfortunately, even if you buy it, he will not work. To transfer the composite signal from the computer, it is necessary to support this species Signal standard. Until 2000 released a video card with support for TV-OUT OVER D-Sub. That is, really to such a video card you could TV adapter VGA tulip. However, after 2000, the signal transmission standard was changed, and the video cards ceased to transmit the composite signal. So if you make a VGA tulip adapter or buy ready and try to use it on a modern video card, the adapter will not work under any circumstances.

If you still need to display a signal from the VGA of the output of a modern video card through a composite entrance to the TV (yellow tulip video), then the only way to do this is to purchase a special converter device. It transcoding the signal between different standards. The cost of this converter varies from 10 to $ 20. This is a rather complicated device, so it is only a professional to assemble it on your own.

If you are a happy owner of an ancient video card (Issue until 2000), which supports TV-out Over D-Sub, for example, Matrox, you can try to make an adapter VGA tulip yourself. To do this, you need a RCA and D-SUB or "pinout" connectors.

Prepare VGA connectors and tulip for soldering. Open the protective housing, apply flux to the desired contact pads according to the pinout. Take the segment of the cable of the desired length, read the ends, promote them.

Be sure to wear the housing of the connectors to the cable before you solder it to the connectors. Sold down the inner cable vein to the central contact site of the tulip connector and to the contact number 3 of the VGA connector. Sold down the shielding conductor of the cable (braid) to another tulip connector pin and to the contact number 8 of the VGA connector on the other side of the cable.

Collect the connectors at both ends of the cable. Adapter is ready. You can try to connect the TV to the computer.

Video on the topic

note

Pay special attention to setting the signal format, resolution and redressing. Start with the lowest values. The TV may not recognize the video signal at most combinations of these parameters, so try different options.

Helpful advice

The easiest way to connect the TV to the computer is a video card with the presence of a separate TV-out, tulip or S-Video.

Also you can use the converter.

You may be suitable for another way to connect a computer to a TV, for example:
- Connecting the VGA VGA cable, if there is a VGA input on the TV. Some modern TV models are equipped with a special adapter for connecting VGA;
- Connection through the VGA S-Video adapter. Such a connection is possible on some ATI Radeon video card models, for example, a series of 3000 and special setting Video card driver. Also on the TV should be the input S-Video;
- Connection via VGA YPBPR adapter. The same as in the previous paragraph, but on the TV there should be a component input YPBPR (three tulips not yellow);
- Connect via VGA SCART adapter. The same as in the previous paragraph, but on the TV there should be an input SCART (comb).

Sources:

  • adapter with VGA on tulip buy

New video cards, such as GTX 1060, 1070, ASUS RX 470, ASUS RX 470 and some more samples from other manufacturers are coming without an analog VGA output. Immediately the question arises whether it is possible to connect a monitor that has only a VGA interface, to a computer with a DVI-D video card.

Since DVI-D is a fully digital interface, to make your adapter yourself or bend extra pins in the fork will not work. The standard adapter with DVI on the VGA will also not help you, again due to the fact that the DVI-D interface is calculated only on the digital signal, so this adapter will not work.

Video card without analog exit VGA

Connecting a VGA monitor / other device to video plane

To solve this problem you will need only:

  1. Whether there is a HDMI output on your video card;
  2. Choose an active adapter DVI-D VGA.

The fulfillment of this simplest algorithm will relieve you from tedious trips to the store to buy additional components, the need for which you found out along the way.

As soon as it became clear which inputs are present on the video card, it is time to choose the so-called active adapter DVI-D VGA.

This device converts a digital signal from a video card to an old good analogWith which the monitor can already work. As a result of this transformation, the image quality will not suffer or, to be quite accurate, it will be impossible to see a significant difference.

As a rule, such an adapter looks like a box in which on the one hand is input under HDMI cable, where we connect the DVI-D cable from the computer video card, and on the other hand, the VGA output for the monitor cable, respectively.

Depending on the manufacturer dimensions of the device may vary There are also models going with the built-in small HDMI cable. HDMI is a new digital data interface in high quality, to anyway, in the future, all manufacturers of video cards, monitors and other output devices will be driven. The presence or absence of this interface on your video card will determine the need to purchase an adapter with HDMI on DVI-D. P approved adapters are often found quite in electronics stores And they will not find it difficult.

Can it easier to buy a new monitor?

Do all these design solutions are justified, because of which you have a whole system from cables and adapters between the monitor and the system unit? Of course, the design may not be the most elegant, but the ability to connect the monitor with VGA to a computer with a video card having even the only DVI-D output exists. Although, with such an organization, a narrow place will be an adapter with DVI on HDMI (provided that there is no exit under DVI on the video card). One way or another, it will be in any case cheaper than to acquire a new monitor or video card.

Here you may encounter two main problems:

  1. The price of your chosen device;
  2. The absence of the device you need in the nearest stores.

If the first problem can be competed, searching for models without cable on the Internet (as a rule, they will be cheaper), then with the shops not everything is so rosy. Since the DVI-I interface is more common that can work with both a digital signal and analog, find components for its exclusively "digital" fellow becomes not easy. Most likely, you will be told that there are no such devices in nature and will be offered to buy a new monitor with DVI-D. Therefore, the most correct option will be ordered such an adapter via the Internet or buy it again through online stores, it will help you to significantly save time.

Be sure to read the characteristics of the device and feedback for it.. In order for everything to work as it should, since some devices have their own features of the connection that are not always indicated in the specifications on the pages of online stores. Especially should be attentive when the adapter description does not specify that it is active. To purchase an active adapter you need, you should find the site of the manufacturer of a device that you found and carefully read the description for it.

There are no significant qualitative characteristics between existing transient data samples. Rather, each specific option It will be good for use in a particular situation. For example, if you are going to make a quick-release connection, that is, it makes sense to use an adapter with a built-in cable. If you are going to configure the connection between the monitor or the projector once and do not touch it anymore, then it will be reasonable to use the adapter only with the outputs under the cables, this will allow you to choose the cable suitable in length.

Term DVI-D VGA - Connection Mode Designation system Block to a computer monitor, TV. This concept is also actively used to designate adapters. With their help, the old models of PC monitors equipped with analog connectors are connected to new video cards. Correct connection provides uninterrupted digital signal transmission.

The type of connection under consideration has several important features. First of all, it is impossible to exclude compatibility problems. Not always to use a special adapter allows you to solve the emerging failure. The price of the adapter is relatively small - from $ 2 to $ 5. Experts recommend abandoning the use of adapters, preferring the signal converter.

DVI abbreviation is decrypted as Digital Visual Interface, which is translated from the English-digital video interface. This connector was created to transfer the video signal to projectors, computer monitors, televisions and other techniques that can display graphic content. The DVI-D adapter is a digital connection that allows you to avoid quality loss due to digital signal conversion into analog.

The interface feature is that it provides data transmission with maximum resolution. Therefore, a high-quality and natural image is displayed on the screen. The signal is played only in digital format. Separately, we note that the DVI-D connection is used on digital liquid crystal screens. Maximum supported resolution - 2048x1536 pixels.

The modification of the DVI-D interface was appreciated by leading organizations that are engaged in the production of monitors and televisions. Users working with computers because of this faced difficulties. The VGA interface began to gradually leave the mass appeal. Therefore, it was necessary to acquire adapters.

Features of the connector VGA.

VGA interface - video transmission connector. Computer monitors, video cards were equipped with this interface. To a greater extent, it concerns old devices that were released in the 80-90 years of the last century. The VGA connection is designed to transmit analog signal. Maximum quality - HD.

As for Full HD or reproduction of 3D files, it is impossible to achieve this with VGA. The interface in question is considered an outdated signal transmission method. Therefore, it is rare enough. New GPU modules are equipped exclusively DVI-D interface. Users are not in a hurry to part with monitors that are connected to the Systemster via VGA. Therefore, there are compatibility issues.

The only way out of the current situation is the DVI TO VGA adapter. If comparable technical description Considered connections, it can be concluded that the signals are transmitted in different formats. If the interface set on the technique used does not coincide, then you should buy a high-quality digital-analog converter. This device is capable of solving the problem.

Consider that the VGA interface is classified for three additional subspecies. Now we analyze the features of each of them:

  1. DDC1 is able to ensure the transmission of information unilaterally. The video card will determine the information on the cord, and also identifies the DDC monitor connected to this component.
  2. DDC2 - specifications This connectivity suggests that data exchange will be carried out in bilateral manner. The monitor broadcasts information on the PC. The computer automatically adjusts the settings for the connected device.
  3. E-DDC is the most effective subspecies. Information about the connected device is saved in the interface memory.

With the features of VGA and DVI-D, they figured out, and now we analyze the problems of compatibility and how to solve them.

Compatibility DVI-D and VGA

Comparison of signals running from DVI-D connectors to the VGA interface allows you to make the right conclusions regarding the characteristic differences between these ports. To configure the correct connection, you must use adapters. Special adapters allow you to transmit a digital signal to a monitor that supports analog standard.

An alternative way to solve compatibility issues is a DVI-D to VGA Converter signal converter. In order not to encounter various difficulties already postfactum, you need to study the issue of acquiring an optimal converter in advance.

The main advantage of adapters is a minor price. There is only one small nuance. No contacts C1-C4 - rectangular holes on the port of DVI-D - the cause of compatibility related problems is caused. If even the monitor still sends the signal, then the image is unlikely to appear.

The low cost of adapters is the reason that users acquire these devices to configure the connection of the old monitor to the new video card. In some situations, you can connect VGA to the DVI-D interface. However, it is rather an exception than the rule. It is the pinout that becomes the absence of a signal.

Converters

There are many different modifications of DVI-D converters on VGA. Mostly for these devices, an independent power source is required. This necessity is explained by the fact that the device has a not quite typical design. It is impossible to call this adapter adapter, since it is rather a full-fledged device with an inside board.

It is this feature that significantly increases the cost of the device. Do not attempt to save on the acquisition of the converter. Because it can cause incorrect connection. Converter function - data transmission from a modern GPU module to an outdated model of a TV or computer monitor. Very often, inexpensive TV models are used as a PC monitor or laptop.

The presence of a converter may also be a prerequisite for connecting old projectors. However, most of its devices of this type are equipped with an HDMI interface. This connector also works with a digital signal. Therefore, there should be no problems with synchronization with a modern GPU module. Additional adapters in such situations are not required.

Consider the signal conversion algorithm. If you analyze the device accessible to purchase, you can find adapters with the following properties:

  • Supports DVI-D connection to monitors and VGA screens with resolution up to 1920x1200 pixels. Minimum resolution 800x600 points;
  • Transducer input - 21 pin, and output - 15 pin;
  • Maximum frequency - 60 Hz;
  • The length of the wire of the converter can reach one and a half meters;
  • Price - from $ 6.

Remember. Converter - unidirectional device. This means that it is capable of converting an exclusively digital signal into analog. Reverse conversion is not possible. Therefore, when you need to connect the GPU module with the VGA connector to the display or DVI-D TV, you have to use the reverse converter. However, consider that with such a connection to achieve high Quality The translated image is impossible.

When you choose a converter, consider the fact that this device It may be incompatible with the technique used. Remember that for the correct operation of the converter, a separate power supply will be required. The audio signal will be displayed using an additional cable. In those situations where the cable that provides a PC connection and a monitor or television, a long less than one and a half meters, connect it to the power source is completely optional.

So that all the elements of the connection system are correctly functioned, it is desirable that the connected output device has the same frequency as the converter. Use the displays whose diagonal does not exceed 40 inches. Otherwise, stripes may appear on the screen.

If the converter converts a signal not only with DVI-D on VGA, but also works with other formats, then you should buy a multifunctional device that supports almost all popular interfaces.

What is better - DVI-D or VGA

If you compare these connectors, you can come to the conclusion that to a certain extent they are equivalent. These interfaces are noticeably losing HDMI. Since they are not able to provide simultaneous transmission of audio and video signal. However, in any case, working with DVI-D will be slightly more convenient than with VGA. This is a newer interface capable of demonstrating a really high-quality image.

Compare connectors to a certain degree incorrectly. The time of the invention of technologies is not taken into account. DVI-D appeared much later, so it is designed to work with more modern standards. VGA is used primarily on old output devices. Therefore, they use it extremely rare.

Note.

Usually, no one has problems finding a cheap, even a dual adapter from the DVI connector to the usual ancient analog VGA connector and connect new video card Or another modern device to the projector, monitor, TV or similar to the playing device. But all this until the user faces the problem of connecting the DVI-D connector.
The first obstacle becomes legs and contacts. In principle, they are similar to frequently found DVI-I. It would seem that cut or bend everything that interferes - and now the adapter made by their own hands. However, nothing works.

Explanation There is a simple. The DVI standard provides for the transmission and digital signal and analog. But cable types can mean the transmission of only a digital signal. Or even two channels in the figure at the same time. Naturally to the detriment of the analogue.

Look at the connectors and cables:
Mom connector:

Cable connector.

In the case of DVI-I, one digital channel and one analog channel is transmitted. Adapters ignore the entire digit and simply rebuitate the analog lines to the appropriate outputs (Pins) adapter VGA.. As a result, adapters are cheap, contain only wires and soldering.

But another case:

From the cable side:

It seems everything is similar, but the analog signal is removed completely. And in the latter case, another set of "digits" is transmitted instead of voltages suitable for VGA. There is a variant and simpler - the photo is presented in this image:

Here the manufacturers decided to limit ourselves to just with one digital channel and do not take care of the analogue at all.

So what is the problem why DVI-D adapters on VGA although there are expensive? The problem is that in the cable it is necessary to embed electronics in addition to the soldering, which would decipher the digit, in fact, drawing a picture and then it would recodle this figure into analog image. At the same time, the quality of the picture, in the case of cheap adapters, is what can be saved to do not at all do not shock the already puzzled buyers. The fact is that from the digital format the image is translated without loss, but high-quality conversion in RGB for transmission through VGA requires quite expensive resources. As a result, this is what save.

For reference. Why do you need DVI-D? Using this format of the connectors in the full version (not as on the cropped photo 5) can be transmitted a picture in permissions 2560 × 1600 and 2048 × 1536 pixels, which significantly exceeds a single-channel version, which if and can "leave" FullHD, but will do it only with the maximum A frequency of 75 Hz, which is no longer satisfied with the owners of huge 4K TVs or monitors with a similar resolution.