​​"It's obvious that the picture looks wrong, where should we start the parameters?"​​ Novice who are new to LED large screens will most likely be stuck by this problem. Don’t panic! Today, we will use the most straightforward and plain language to completely break up the issue of "where to change the input parameters of the LED large screen on the computer", so that you can start the operation after reading it!

1. If the parameters are not adjusted properly, the problem may lie here.

Have you encountered this situation as well: the screen color is gray, the text edges are blurred, and even the screen splash appears?​90% of the display problems are actually caused by mismatch of parameter settings​. For example, the brightness of the outdoor advertising screen is too low and it is impossible to see clearly during the day; the refresh rate of the indoor conference room screen is not enough, and the camera lens is full of stripes.

At this time, what you need is not to change the device, but to find the computer​"Console"————The "brain command" of LED large screens.

2. Teach you step by step to find the parameters and settings entrance

​​The key point is here!​​ Different brands of LED large-screen control software look different, but the core operation logic is basically the same. Let's take the most common system as an example:

1. ​​Open the control software​​
   Double-click the control software icon on the desktop (usually called LEDControl, ScreenMaster and other names). If you can't find it, try to see if there are small icons in the taskbar in the lower right corner of the computer - sometimes it will hide in the tray area silently.

2. ​Connecting devices​
   Click on the upper left corner“Equipment Management”​or​"Connect Screen"​, at this time a string of IP addresses or device numbers will appear. Select the screen you want to adjust, and the status display is "online" before changing the parameters!

3. ​Enter the core settings area​
   Find the menu bar​"Display Settings"​or“Parameter configuration”​, here are four Vajra-level functions:

• ​​Brightness/Contrast​​: It is recommended to start at 4000cd/m² for outdoor screens, and 800-1200cd/m² indoors are enough (too bright will hurt your eyes!)
• ​​Refresh rate​: Commercial advertising starts at 1920Hz, stage performances must be 3840Hz
• ​​Grayscale​: Only 16bit is called professional display
• ​Color Mode​: Don’t choose the standards such as sRGB and DCI-P3, it depends on the content source format.

3. How to adjust the parameters so as not to overturn?

​​"Changing parameters is not as simple as pulling the progress bar!"​​ Lao Wang, who has been working on on-site debugging for three years, told the truth. Remember these three golden rules:

1. ​​The environment determines the brightness​

• Shopping mall window screen: open 5000cd/m² during the day and drop to 2000cd/m² at night
• Conference room screen: directly check​“Auto Brightness”​, saves electricity and protects eyes

1. ​​The refresh rate must match the shooting device​
   What are you most afraid of when doing activities? The camera is completely black! At this time, you have to figure it out:

• Camera frame rate × 2 = minimum screen refresh rate
  For example, shooting with a 60-frame camera, the screen refresh rate will be adjusted to at least 120Hz.

1. ​Color temperature is not metaphysical​

• Clothing store windows use 6500K cool white light, making the color more realistic
• The restaurant warms up the screen with 3500K, and the food looks more appetizing

4. What to do if you encounter strange problems?

​​"The parameters are obviously adjusted correctly, why is it still wrong?"​​ At this time, it is probably because of signal transmission. Focus on checking these places:

1. ​Signal wire quality​
   If the HDMI cable exceeds 15 meters, it is easy to lose data. Before changing the parameters, try changing the fiber cable.

2. ​Graphics card output settings​
   Right-click the computer graphics card control panel and turn​“Color Dynamic Range”​Change from 16-235 to 0-255 (This hidden pit has at least half of the newcomers!)

3. ​Power interference​
   Is the screen ripple? Wire the power cord and signal cord separately and don't tie it together

5. Talk about personal experience

After working on large LED screens for so many years, I have only two biggest experiences:

1. ​Don't be superstitious about the default parameters——The installation environment of each screen is different. It is better to test it yourself if you try it out by yourself if you try it out.
2. ​Regular calibration is not missing——The screen will age after using it for a long time. It is recommended to use a colorimeter to run the parameters again every quarter.

If you are using a screen that supports intelligent adjustment (such as a model with ambient light sensing), you must learn to use automatic mode even more. After all​“Machines know better than humans when they should light up and when they should be dark”​​, what we need to do is to set up the key parameter framework.

Debugging parameters is not difficult, the key is to get more hands on trial and error. Next time you encounter a display problem, take a deep breath, and then follow the steps you mentioned today to check step by step - make sure you can make the screen look refreshed in half an hour!

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