Hi all! Today I received a rather interesting piece from China.
It also has two connectors for audio and power output. So, now we can tell by price.
That is, there are three options. This is the most expensive. It costs 500 rubles. There are somewhere for 350 and 200.
Here, the one for 350, it will only have sound, there will be no power. And the one over 200 will have neither sound nor power.
Well, it depends on who you want. But if you are not sure whether the power supply is enough, then you should go with this, with external power.
I looked at several reviews of these adapters before purchasing. In general, also, take the cheapest one... It’s better not to take the cheapest one.
It doesn't seem like it will be possible to save money here. Let's try to connect. Of course, I don’t know whether it will work, how it will work, whether it will be normal or not.
So, let's connect the console. And here we connect the cable. We tighten the bolts for security. In general, the set-top box is connected, now we will turn on the power.
Yes, sound. Sound. I have it here. Here I will connect the sound to it. Connect the power to the speaker.
Okay, this one gives a signal. Oh, and... We also need to connect the monitor itself, directly.\ 
We connect the monitor. Oh, I need to turn it down. So, even without power, it seems that the set-top box started working.
Now let's see what it looks like. I have a mouse, my dear.
Now it will boot, let's turn on the sound. Well, the resolution is kind of crooked, in principle, but that’s how it is.
Probably needs to be configured. And it looks quite nice. And there is sound. But how can I turn it down?
Oh, exactly. Now we'll just turn it down using the remote control. Yes, screen. Well, then use the remote control. The network, no, it's the network.
Oh, here's the screen. Screen resolution probably. There's something I don't understand. Okay, back. Okay, well, this way it’s already more even, but it’s still somehow stretched out awkwardly.
We need to do something about this. I don’t know, maybe there’s another way to configure it.
So, well, let's do it again. Don't know. In general, the point is, it works fine.
But I don’t understand, maybe... Now, now, it’s already smoother. Wow, that's a different matter, a different matter.
Although no, not something else. Or maybe this theme is somehow configured in the monitor. No, this, this, we’ll cancel this.
Back. So, no, wait, why am I spread apart again? OK. Well, everything, in principle, works.
Well, in general, see for yourself, the icons are a little stretched out, but I think watching movies will be enough.
Maybe this can be configured somehow, I haven’t figured it out yet, but the very meaning of this video is that, directly, this one here, it works, the sound works.
Everything works, in short. Works great. Thanks everyone, bye. The link will be in the description. If anyone is interested, please order. Goodbye.
Today you can't do without HDMI VGA adapter for those users who need to connect their PC or laptop to a TV with an HDMI input. Naturally, we are talking about those models that only have a VGA output.
It seemed, well, what could be simpler? However, in reality, everything is not as simple as it might seem initially. Somewhat ahead of the curve, let's say that the process of purchasing a simple cable capable of transferring from VGA to HDMI and vice versa turned out to be very difficult.
In order to understand the reasons for this, let’s first understand the very nature of the signals in question.
What is the difference between a VGA signal and an HDMI signal?
The main difference between these signals is that the VGA format is analog, while HDMI is digital. Without overloading the article with technical subtleties, we will provide a drawing to clearly demonstrate the difference between these two signals.
Although, of course, everything is known about the presence of such devices as:
- ADC. Using this device, the input analog signal is converted into a discrete code.
- DAC. This device is used to convert digital (usually binary) code into an analog signal.
And their presence, it would seem, should eliminate any questions about signal adapters. However, you need to understand that VGA is a format whose purpose is to display images on computer monitors. Whereas HDMI's functionality is much higher, and this allows it to work with a wider variety of devices. And this is the main problem.
HDMI has a term called HDCP. Again, let’s not get into the technical jungle. Let's just say that this is an abbreviation for a “sophisticated” protection system that does not allow those who are not allowed to read the signal.
This is done so that if the signal is intercepted by “enemies”, they would not be able to read it without having identical HDCP technology. For this reason, making a standard adapter connecting wires with an HDMI end and a cable ending with VGA will not help solve the problem. That is, you can connect, but the screen will remain dark.
Attention! Don't be fooled! It makes no sense to buy pseudo-adapters HDMI → VGA and vice versa in the form of a regular cable with different ends.
How to transfer a signal from HDMI to VGA
What are the ways to transfer HDMI to VGA? We already said a little higher that every engineer, and just a competent user, knows the concepts of DAC (DAC) and ADC (Analog-to-digital converter, ADC) and the only question is how to adapt all this to the topic we are discussing . If you go to the AliExpress website, you can easily find there buy an excellent quality HDMI-VGA converter. And it will definitely work.
How to transfer a signal from VGA to HDMI
In addition to the converters discussed above, you can also use 100% converters. The VGA signal to HDMI can be converted using the following devices:
- Kramer VP-435. We must remember that this device is also a scaler.
- Cypress CP-261H (CP-261HS).
- Dune 3RCA-HDMI.
To convert in the opposite direction, you should use devices No. 2 and 3 from the list above.
As you probably already noticed, this is about full-fledged devices that do not require adapters. There is an HDMI connector on one side and a VGA connector on the other. In addition, there are audio outputs. That is, the device has several functions. Such devices can be purchased without problems both in Russia and in all countries of the former Soviet Union.
Since I have an old TV with a CRT screen, I’ve been thinking about replacing it with something smaller for a long time. And the simplest solution was to simply buy an adapter from HDMI to VGA for the DVB-T2 digital set-top box and connect the set-top box to a regular computer monitor, also old, but flat and smaller. So I ordered this wire from China and received it in 1.5 months.
Since the set-top box did not have a VGA output, but did have HDMI, it was decided to buy this adapter from HDMI to VGA.
When I connected the monitor to the console, at first the picture froze. After switching to another channel, the picture froze again and I thought that the wiring was not working, but I decided to play with the permissions on the set-top box. The default was 720p, and by simply switching modes I found the one on which everything worked. Yes, the monitor is old and therefore the HDMI to VGA video converter only started at 576i resolution, or I may have mixed up the numbers, but in general the resolution is less than 720p. But I was pleased with the picture - it is much better and the colors are more real than on a CRT box TV. Now there is more space and a better picture. For now I'm satisfied and that's enough for me. But if I could choose a wider matrix, it would be even better, and if I come across it, then most likely I will buy it to hang on the wall.
To be honest, the old TV is a little annoying - after all, a simple flat monitor is better both in terms of the space it takes up and the picture it produces.
I have an elderly CRT (CRT) SONY 200 GS Trinitron monitor. Excellent colors, good condition, but already morally outdated, although physically it’s nowhere near as good. The idea of using this ordinary computer monitor with a 15 pin VGA (D-sub) input as a TV has been around for a long time, but it never came to fruition. And now this long-awaited moment has come.
A converter model HDV200-A was ordered. It allows you to convert a regular standard Video signal from any source: DVD, VCR, TV tuner (DVB-T, DVB-C, DVB-S), camera, etc. in VGA (D-sub), which is standard in almost all monitors. 
The converter supports the following output resolutions: 800X600@60Hz, 800X600@75Hz, 1024X768@60Hz, 1280X1024@60Hz, 1440X900@60Hz, 1680X1050@60Hz, 1920X1080@60Hz, 1920X1200@60 Hz.
Supports (auto-detect) the following color formats: PAL, NSTC and SECAM. It was the presence of SECAM that turned out to be decisive when choosing this particular model, because it was supposed to be used to convert a signal from a DVB-T digital terrestrial tuner, where SECAM could possibly be used.
The order from China was sent on December 5, and on January 17 it arrived at the post office. I received it in my hands on January 22 and checked it immediately.
The kit includes a cardboard box, the converter itself, a power supply (it’s bad that it has flat power contacts, but I knew about it and therefore bought an adapter for round ones in advance), two cords - RCA to Video and S-VIDEO, a small manual. The cardboard box was wrapped in two layers of thin sheet polyethylene foam and everything was packaged in a black bag. There is no damage during shipment. 
The Video signal was taken from the Vityaz HDR-826 HD digital tuner
This tuner is universal and allows you to receive digital signals, both terrestrial - DVB-T, and cable - DVB-C, it is possible to connect an access card (encrypted channels). Outputs (tuner) - SCART, RCA, HDMI. In our case, we used the SD signal (576i) of the DVB-C digital package of the local cable operator. Photo from the monitor screen of the Kino Hit channel below 
Current resolution is 1280X1024@60Hz. The image is clear, without tails, repetitions, transitions and any kind of taffy, because... Initially the signal from the digital tuner is used.
Resolution is set by successively pressing the Resolution button. Another Menu button changes the monitor parameters - Brightness, Saturation, Contrast, Hue.
Input button – switches between input signals from different sources.
When selected, the current modes are displayed on the monitor screen and disappear after a few seconds. The current settings appear to be saved when the converter is turned off. On the side of the converter there is a connector for connecting an external 5V power supply. Next to it is a power indicator – a red LED covered with a quality control sticker. It looks pretty cool, i.e. illuminated sticker. 
During operation, the converter body heats up to approximately 45 degrees.
Let me make a reservation right away: only an SD signal was used - 576i, (more precisely 625 lines), was not tested with an HD signal 1920X1080, although the converter and tuner support this mode, but the local cable operator only plans to broadcast in HD, and besides, a modern monitor is needed with a diagonal of at least approximately 22" or more. And most likely it will be an SD signal. This issue requires further study
Sound (Audio), of course, is sent from the tuner to any stereo amplifier (for example, the same computer speakers).
I am very pleased with the purchase, I finally found a use for my old monitor. Now you can think about purchasing the Iiama Prolite XB2483HSU.
It is indeed a very useful and necessary thing.
Those who own a significant amount of audio and video equipment are faced with a choice: make it yourself or purchase an adapter from the store that will convert signals of different types. Needless to say, factory devices cost a lot, but you can often do without them. And within the article we will talk about how to make a VGA to RCA adapter. Frequently asked questions will also be answered.
What is a VGA RCA adapter
The circuit of this device may seem complicated, but only until you understand it. What is this device? This is an adapter from tulips (RCA connectors) of analog video output to VGA D-Sub for 15 pins. The device reviewed here can be used to connect a DVD player or satellite tuner to a multimedia projector. Of course, provided that it is not possible to work directly using the same type of cable, which is usually common in cheap or outdated devices.
What is the idea?
How to implement such an idea? You need a computer cable (twisted pair type CAT5/CAT5e) designed to transmit video signals. We will use it because the transmission is carried out over a distance of fifty meters without loss of quality.
First, we need to acquire three RCA connectors and one D-Sub15 pin (this is a plug), as well as a twisted pair cable. The last part is better to use shielded STP than UTP. But this one is more difficult to get, which affects the price. Therefore, the issue of possibilities and desires is considered here. There is no particular difference between the elements, but there is one nuance: it is better to use UTP if the cable length is less than 10 meters. If the distance is greater, then it would still be better to find STP.
Pinout
How to pinout a 15 pin D-Sub connector? The numbers go from left to right:
1 - R-Y (Pr).
2 - Y.
3 - B-Y (Pb).
4 - Ground - Brown.
5 - Ground - Wht\Brown.
6 - Ground R-Y (Pr) - Wht\Red.
7 - Ground Y - Wht\Green.
8 - Ground B-Y (Pb) - Wht\Blue.
9 - Not needed.
10 - Ground.
11 - Not needed.
12 - DDC DAT.
13 - Horizontal Synchronization.
14 - Vertical Synchronization.
15 - DDC Clock.
For the VGA RCA adapter cable we need six pins out of the fifteen presented. How to properly wire connectors and contacts? Check out this picture and you will understand how and what to do.
So let's see what happened. If everything was soldered correctly, then you now have an adapter that can supply a video signal to VGA D-Sub on the 15 pins of the projector. You can see approximately what the final product should look like in the photographs presented in the article.
Examination
Wire pairs with RCA plugs soldered at the ends can be usefully compressed with heat shrink to obtain greater rigidity. In general, now you can connect the result of your work and enjoy it (if everything was soldered together as needed). Paired wires, at the ends of which RCA plugs are attached, can be crimped with heat shrink to obtain greater rigidity.
In this case, we used a satellite tuner with a 3 RCA component video output as a signal source and a Sanyo multimedia projector, which did not have a separate video input of the same type. If at the moment it is not possible to verify the functionality of the resulting adapter, then you can only carefully inspect the entire structure and make sure that there were no omissions, and everything is soldered as indicated in the article.
What you need to understand
You should be aware that the adapter in question can ensure the operation and full functioning of a device that has a VGA video input only if it can automatically detect the type of incoming video signal. An indicator of this will be the ability to select the mode in which data will be transmitted to RGB/YPbPr. Usage will be positively impacted by sending these types of signals. Why is that?
The fact is that RGB and HV.sync (for example, data coming from the output of a personal computer’s video card) are converted to RGB, which has sync pulses in the green channel (Y). It, in turn, turns into the color-difference YPbPr. And as a result, we can conclude that these signals are not the same thing, although they can convey the same information. Therefore, carefully study what a VGA RCA adapter looks like.
FAQ
Based on the data presented in the article, it can be assumed that readers have some questions. However, this is not the first time such a topic has been raised, so such information can be found without difficulty. We found out how to make a VGA RCA adapter with your own hands. Now let's look at its possible improvements.
What adapters can be made using twisted pair?
- VGA extenders are special cables that have D-Sub 15 pin connectors on both ends, while their input and output use the same technology.
- RCA (3xRCA) is used to transmit component video signals. There are three connectors at each end. Used when working with a DVD player and TV.
- RCA (D-Sub15pin) was discussed a little higher. Here are the components Y, Pr, Pb in VGA.
- To transmit analog audio, two pairs of stereo signals can be used simultaneously (4 RCA connectors at each end).
Why is a free Brown-Brown/Wht pair needed?
It can be used to transmit mono audio from a DVD player when there is an audio input on a multimedia projector (assuming it has speakers). Otherwise, it would be better to cut this pair and insulate it. Therefore, you should carefully consider the aspects and how the VGA RCA adapter will be used.
How can I make a Scart VGA adapter?
If the video source has a full Scart video output, then such a device can be made without problems. To do this, pinout the contacts is carried out as follows (outputs first):
- 7 - blue;
- 11 - green;
- 15 - red.
Now the ground:
- 5 - blue;
- 9 - green;
- 13 - red.
Otherwise, everything is done as previously described in the article.
Conclusion
Any final words? Carefully study the presented drawings and mentally imagine in detail what and how you will do. During work, exercise extreme caution and attentiveness - after all, if you miss the grounding, the consequences will be quite sad and very negative. The result is not VGA RCA for equipment, but the need to buy a new device for video playback. But if everything works out, then connecting a computer, projector, TV and many other devices will not be a problem now. The main thing is to make sure that all the pins are connected to the required outputs, and no incidents will happen.
But at the same time, we can raise the question of the profitability of assembling this adapter. The fact is that you can buy it for 100-150 rubles, which is not a high price. Time spent creating an adapter on your own will end up costing more in the long run. The only acceptable option is if everything is already there, and you just need to make this device. From a purely amateur point of view, such experience can be valuable if one has an eye on work closely related to the restoration and creation of similar devices in the future.
