What should I do if the VGA line signal is interfered with?

The main reason is that the line is too long, which makes it susceptible to interference and the signal attenuation is serious. You can change to a shorter and interference-resistant VGA cable. If you don't change the wire, you can also wrap a thin layer of iron sheet or several layers of metal foil on the surface to prevent interference.

1: Use a VGA extension amplifier. The project I did was in the generator room, 100 meters, no problem.

2: Carry out casing, VGA line - PVC pipe - steel pipe, this way, subway weak current installation is this way.

3: Eliminate interference, and the VGA line runs from somewhere else.

The above is my experience in engineering installation!

Interference, change the *** line, with a VGA extender.

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.

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!

Solution: Check the image first: unplug a cable with serious interference from the main unit, and use a monitor (or TV) to directly view the image.

That is, the camera - the transmission cable - the monitor, to see if there is any interference? If the monitor power supply is 2 plugs, do not touch the ground, and do not touch other grounding objects.

1.There is interference - check the front-end camera output again for interference? If not, it means that the interference is from line coupling, which is true interference; If there is interference in the front-end camera output,—— camera or power supply failure, troubleshoot - this is false interference;

2.If you look at the lack of interference with a stand-alone monitor, there is no interference from the camera output and no interference from the line. But when you get to the host, there is interference on this way - it must be false interference, most of it is ground loop interference introduced by "multi-point grounding" - the correct design is:

The system can only be connected to the ground at one point, and all cameras and power sources at the front end should be insulated from the ground. There is no need for anti-jammers or changes in the transmission mode, it is solved, and more importantly, the "potential safety hazards" are eliminated;

3.The real interference introduced by the line is generally not particularly powerful, and the image can be seen clearly, which can be effectively solved with an anti-jammer; If the interference is severe, the image can hardly be seen clearly, and it is mostly false interference.

1. For the problem of closed routes, re-joint.

2、The problem of TV's anti-interference ability,You can only turn off the computer and watch TV again。

3. Problems with VGA cables. Try wrapping the VGA cable in aluminum foil.

4. Try to change the direction of the line. Try not to guess the waiting.

5. There is a problem with the high-frequency head of the TV itself6The mode of the computer is different from the mode of the TV, and the mode can be converted with the remote control, 7The VGA outlet of the computer is connected to a splitter, and a better VGA cable is used to disturb 8Problems with your computer's graphics card.

Cable TV ground string a non-polarized capacitor to try.

It could be a problem with the graphics card mismatch.