What are the causes of VGA line interference? 20

If the computer needs to use three plugs with ground wires, it must be grounded, otherwise it can't be shielded, and if the connector is loose, the pins will be tinned and coated with a drop of solder paste, not too much, and the air gun will melt.

The VGA signal cable is up to 15 meters long.

1. This value is set in the VGA specification, because when the signal transmission distance exceeds 15 meters, the VGA signal quality will be seriously reduced. If you need to transmit the VGA signal generated by the graphics card to a distance of more than 15 meters, when it is not much, you can solder a VGA cable to try the effect, if the distance is too far, you should directly use the VGA-CAT5 converter.

2. VGA (Video Graphics Array) is a transmission standard launched by IBM in 1987 with PS2 machine, which has the advantages of high resolution, fast display rate and rich color, and has been widely used in the field of color display. It does not support hot-swappable and audio transmission.

3. VGA interface is a D-type interface, using asymmetrically distributed 15pin connection, a total of 15 pins, divided into 3 rows, each row of 5 holes.

4. VGA signal cable is used to connect VGA interface equipment, and the length of the finished cable is meter, 2 meters, 3 meters, 5 meters, 10 meters, 15 meters and other specifications.

VGA's line anti-interference ability is not strong, the line length generally does not exceed 15 meters, and the line greater than 5 meters should try to choose the best wire, otherwise the display quality will be affected under some conditions.

To put it simply, don't be greedy for cheap and buy cheap threads, and there will be a chance that the screen will be full of snowflakes when the time comes.

Why do you need a VGA cable,42Inch TV was bought several years ago,No HDMI interface?

Even the DVI interface is much better than the VGA.

The effective distance of the VGA cable is generally 20 meters, and it is recommended to buy the best one.

The VGA crossover divides the same frequency to different display devices, and it can only accept one working frequency, otherwise it will be subject to mutual interference.

Method 1: Adjust the refresh rate of the monitor and the refresh rate of the LCD at the same time: 60Hz(Provided with: no TV).

Method 2: Only one display device is ensured. Trap this.

This Wang Xun is a little suggestion from me, you can try it!