​​Oh hey! How to adjust this big screen?​​

When the LED screen was installed, Lao Zhang was so anxious that he was spinning around in the atrium of the mall - the screen was bright, but the picture always seemed to be covered with fog, and the words in the distance were blurred. Have you encountered this scene as well? Don't panic, let's talk about it today​Those tricks of LED large screen debugging​, please make sure you have a clear idea after reading it.

​​1. Preparation before debugging: Are the three major items ready?​​

​​Xiaobai must ask: What exactly needs to be prepared for debugging?​​
To put it bluntly, it’s just like cooking. It’s not okay if you don’t work together. The key points are to draw you:

1. ​​The signal source must be stable​: Have you seen someone use a mobile phone to project the screen and splash the screen? It is recommended to go directly to a professional player. Don’t be greedy for the HDMI cable, choose a shielded one.
2. ​​Don't mess around with debugging software​: Nowadays, mainstream control systems have automatic correction, but when encountering curved screens, they still have to manually fine-tune them.
3. ​​Safety measures must be in place​​: Aerial work permits and insulated gloves are troublesome, and they can save their lives at critical moments.

​​Real cases​
Last year, a shopping mall installed a 200㎡ arc screen. The construction team did not do three-dimensional modeling and directly stepped on it. As a result, the splicing seam error was 3mm, and it cost 80,000 yuan to rework. So,​Do virtual debugging in advance​​It can save money from old nose.

​​2. Debugging site: walk five steps without getting lost​​

​​The key point is here! Where should debugging be done?​​
Here is a tip to share - in fact, finding a debugging point is like finding a partner, it depends on whether the "three views" are in line with each other:

• ​​View distance​: It is best to see the overall effect of the P4 screen from 4 meters away. If you are too close, you will easily find pixel particles.
• ​​Optical angle​: With a protractor, if the elevation angle is exceeded 30°, the compensation algorithm must be added
• ​​View the environment​: The shopping mall lights should not be directed to the screen, and the color temperature is recommended to be controlled at around 4000K.

​​Setting the golden formula​
Brightness value = ambient illuminance × 1.5 (unit: lux)
For example, the daytime illumination of the shopping mall atrium is 2000lux, and the screen brightness is just right to adjust to 3000cd/m². If you can't get it, you can now carry smart screens​​Light-sensitive adaptation​, let it go.

​​3. Common tricks: Complete collection of tricks when dealing with moves​​

​​What if the picture flashes into a disco?​​
Don't rush to scold the manufacturer first, check it in this order:

1. Check the power phase—the probability of three-phase power imbalance is 60%
2. Test refresh rate—Change to ≥1920Hz and basically solve it
3. Look at the signal line - if the length exceeds 30 meters, you have to add a signal amplifier

​​Color deviation first aid kit​
When encountering embarrassing things like green faces, remember this formula: "Red plus green, green plus quality, blue plus yellow". Finely adjusting the coordinate value in the chromaticity chart is much more reliable than random adjustment of saturation. Now all high-end control cards come with3D-LUT Color Calibration​, 10 sets of preset parameters can be stored.

​​4. Maintenance after debugging: Don’t be a hand-off boss​

​​You think it's done after the adjustment?​​
Let me tell you the truth - there is a cinema that has not been cleaned up for half a year, and the heat dissipation hole is blocked, resulting in a 40% reduction in brightness. The audience complained that the picture is as dark as a midnight scene. There are three key points to maintain:

1. ​Dust removal cycle​: In areas with severe smog once a month, the key circuit inspection of the humid environment in the south
2. ​Pixel physical examination​: Use the grayscale gradient diagram to scan it, and immediately locate the color blocks and repair them.
3. ​Data backup​: Remember to store the parameter configuration file in the cloud, and the system can be restored in seconds if it crashes.

​​Intelligent monitoring black technology​
Now some Niu X screens can "take the pulse" by themselves, the brightness will be automatically reduced by temperatures exceeding 55℃, and the humidity exceeding 80% will be activated. But these functions must be in advance​Tick in system settings​, don’t let high technology become a decoration.

​​5. Site selection metaphysics: Don’t step on these pitfalls​

​​Guess which is the most unsuitable for installing a large screen?​​
Last year, there was a lesson from blood and tears - a brand installed a screen opposite the glass curtain wall, and the reflection during the day was as serious as if it was equipped with a haha ​​mirror. Remember these taboos in the site selection:

• Don't face strong light sources (90% mortality rate of direct sunlight)
• Avoid strong electromagnetic areas (transformers and elevator shafts are invisible killers)
• Be careful of visual blind spots (installing the screen behind the pillar is equivalent to burning money to play)

​​Magic data​
According to the 182 project data we tracked, the audience's stay time can be increased by 2.7 times when installed at a height of 2-3 floors and a viewing angle of 15°-25°. If you are equipped with an interactive camera to play somatosensory games, whisper, the drainage effect is great.

Just debugging this is like raising a child - it's hard to work in the early stage and effort in the later stage. I have seen too many people looking for a "wild" team to save debugging fees, but the later maintenance fee is enough to buy half a new screen. Remember,​Leave professional matters to professional people​, those teams who come to the scene with spectrometers and temperature and humidity recorders are often real experts. After all, if you can tell you the parameters such as refresh rate, color temperature, and gamma value, it won’t work if you don’t have any real things in your stomach!

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