How to connect the VGA cable, VGA to RJ45 wiring method

VGA is an abbreviation for Video Graphics Adapter(Array), and the signal type is analog.

Common analog computer signal interfaces: VGA interface and RGB interface.

VGA interface pin definition.

Pin definition.

1 red base color

2 Green base color green

3 blue

4 Address code ID bit

5 Self-test (different definitions) 6 Red grounds.

7 Green Spaces. 8 Blue Ground.

9 Reservation (different definitions).

10 numerically.

11 Address Code.

12 Address Code.

13-line sync.

14 syncs.

15 Address code (different definitions).

Soldering method for computer D15 VGA plugs.

3+4 wire D15 plug.

The core of the red line Foot 1

Shielded wire for red line Foot 6

Core of the green wire pin 2

Shielded wire for green wire pin 7

The core of the blue line pin 3

Shielded wire for blue wire pin 8

Black line foot 10

Brown line foot 11

Yellow line Foot 13

White line foot 14

Outer shield D15 end shell crimping.

In actual operation, there is also a very simple and applicable welding method: that is, the 5 10 pins at both ends of D15 are welded together to make a public ground, and the red, green, and blue shielding wires are twisted together and connected to the public ground; 1, 2, 3 pins connected red, green, blue core; 13 Yellow wire; 14 white wires; The outer shield is crimped to the end shell of the D15 plug, and the brown wire and black wire do not need to be connected, but should be cut to prevent it from being connected in series with other wires.

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For this adapter, use Cat5e ORCategory 6 network cables。When using this adapter, it is recommended to use the route of use at a distance of 1 to 20 metersVGA interfaceto extend the display device via a network cable. The network cable has been routed and the VGA cable cannot be used.

Engineering renovation. The wiring scheme of the engineering decoration company is more convenient and cost-saving. This adapter can be transferred to the VGA serial port, and the VGA interface is used to connect the network cable interface of the computer host or various display network cables to the two adapters respectively.

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Introduction to RJ45 wiring

Cost saving, VGA cable is more expensive than network cable. Used for KTV bars, and other places to arrange, wear pipes, the head of the VGA cable is too big to wear in, this can be directly penetrated with a network cable, and then connected to this head, you can also take it down, it is much more convenient. Advantage.

Need to move the monitor, the projector.

If you use this head, you only need to connect a new network cable of the length you need, and then connect the head.

The transmission frequency of the Category 5 network cable is 100MHz, and its characteristic impedance.

Between 100 and 150 euros. Its characteristics are similar to VGA cables, so it can be used to make VGA extension cables, and the focus of using network cables to make VGA extension cables is to tremble and anti-interference.

A VGA cable is required.

One end of the VGA cable is inserted into the main unit in the correct direction according to the width at the top and narrow at the bottom, and tightened, and the other end is wide and narrow at the bottom and inserted into the display screen. The power cord of the display is last plugged in in the correct direction.

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According to the color in the line are connected one by one, screwed together by hand, and then wrapped with black tape, it is best to stagger the dots between the lines, so as not to connect them together in the future.

The VGA signal cable is the connection cable between the graphics card and the monitor, if it is broken, the degree is relatively light, the screen color display is not right, and if it is serious, nothing will be displayed.

There are many wires in the VGA, red, green, blue (thick), black, brown, white, yellow (thin), if your line still has up, say otherwise. When the thick thread is peeled off, there is a thin thread and a wrapped mesh thread. Here, the red, green, and blue in the thick line are thin mesh lines, and the red, green, and blue lines are red, green, and blue.

There are 3 rows of pins on the VGA head You can see that there are 2 rows that are upward, just from here, the first one on the right is the order of the first stitches: 1 red (fine) 2 green (fine) 3 blue (fine) 4 empty 5 black 6 red 7 green 8 blue 9 empty 10 brown 11 empty 12 empty 13 white 14 yellow 15 empty.

If you have 4 thick wires, just connect them to 4 and 9.

1. In general, the VGA interface will be marked with the number, etc., as shown in the following figure

2. When welding male and female joints, pay attention to parallel and reverse welding. There are a total of 6 pairs of lines (shielded corresponding), which are 3 primary color signals.

3. It must be noted that 13 and 14 are synchronous signals. The shield is grounded. Pay attention to the line sequence when welding. Don't make mistakes. Pay attention to the number on the module when welding.

4. The diagram below shows the difference between the male and female ends and the corresponding connecting wires. The line sequence of VGA soldering after the male end is the same as that of the female end.

5. When welding, it is best to add casing. When welding both ends, the ends must correspond exactly. After the whole welding is completed, it is fixed with hot melt adhesive to prolong the service life. The enclosure must be as metal as possible. In order to improve the anti-interference effect, the welding is as follows:

The VGA interface has 15 pins, and its corresponding interface is defined as follows, as shown in the following figure:

Generally, on the VGA connector, the number of each interface will be marked with 1, 5, 6, 10, 11, 15, etc. If not, the number as shown in the above figure is shown in the following figure:

Note that when welding male and female heads, care should be taken to weld parallel to each other in the opposite direction.

The common VGA wire welding method is as follows (D15 welding method):

If there are interfaces and lines that are not marked in the above table, they should be left blank and only the above marked interfaces and line colors should be soldered. There is also a very applicable welding method: the simplest principle is to retain the basic pins, to ensure that the red, green and blue primary color signals and the line field synchronization signal can be transmitted, that is, the feet are welded together to make a public ground, and the red, green and blue shielding wires are twisted together to connect to the public ground; 1, 2, 3 pins connected red, green, blue core; 13 Yellow wire; 14 white wires; The outer shield is connected to the D15 end shell.

The welding process is a technical job, and the tools must be easy to use!

1. In general, the VGA interface will be marked with the number, etc., as shown in the following figure

2. When welding male and female joints, pay attention to parallel and reverse welding. There are a total of 6 pairs of lines (shielded corresponding), which are 3 primary color signals.

3. It must be noted that 13 and 14 are synchronous signals. The shield is grounded. Pay attention to the line sequence when welding. Don't make mistakes. Pay attention to the number on the module when welding.

4. The diagram below shows the difference between the male and female ends and the corresponding connecting wires. The line sequence of VGA soldering after the male end is the same as that of the female end.

5. When welding, it is best to add casing. When welding both ends, the ends must correspond exactly. After the whole welding is completed, it is fixed with hot melt adhesive to prolong the service life. The enclosure must be as metal as possible. In order to improve the anti-interference effect, the welding is as follows:

Reading guide】Today's display application has been very common and extensive,In such a period,Whether it is in some monitoring computer rooms,Or the school's computer classroom,There are some advertising areas,We can see various styles of displays everywhere。 So in such an environment, have we ever paid attention to the connection of displays? Maybe some friends know that these displays rely on the connection cable to display, and some friends know that this kind of line is the VGA connection dissipation line, but how much do you know about the role of the VGA connection cable?

Before we talk about the role of VGA cable, let's first understand its composition. First of all, this kind of cable is composed of VGA interface and data cable. The VGA connector is one of the D-mounts, which has 15 pinholes and is arranged in three rows.

What do these pinholes mean? In fact, it contains NC signal line, and the bus used to display data, and GND signal line are used for signal transmission; In addition, there are RGB and Hsync and VSYNC pins, which are color and scanning. Only these data cables that form a complete set can realize the role of VGA connection cables.

The VGA interface is the most widespread type, and its contribution to the graphics card is considerable. At present, most graphics cards support this interface type. Even if there is no VGA interface, as long as it is used for display, there will be a corresponding converter head to convert the signal.

At present, a considerable part of the data transmission between the computer host and the external display will be through an analog signal, which will be connected through the VGA interface. The image information in the host computer is converted by this line to form R, G, and B, which are the three primary color signals and the corresponding synchronization signals, and finally they will be transferred to the display device.

After that, these analog display-related machines, such as CRTs, get the corresponding signals and feed them to the processing circuits for corresponding processing, and then convert them into images by the device that drives the picture tube. The VGA cable can cause the graphics card to process the corresponding information and display it on the display.

Do you understand a little bit of our explanation above? It can be said that the VGA cable is equivalent to the data transportation channel between the computer and the display, which provides a strong guarantee for the signal transportation between the two.

Through the above introduction, I believe everyone has a considerable understanding of the role of VGA cables. The presence of this line has made a considerable contribution to the application of our displays. We learned how it works, which provides a reliable basis for us to carry out new research and new display signal applications in the future.

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