11. Why there’s different viewing distance for same model of the LED display & different viewing distance for same size of the full color led display
There’s 2 ways to calculate the best viewing distance: one is by the pixel pitch, one is by the diagonal. There’s also the reason why there’s different viewing distance for same model LED display, also different viewing distance for same size LED display. .
12. What is RCG full color led display, What is CON?
RCG & CON is the 2 most important LED display screen system’s basic set up. For each LED display screen, it has only one RCG & CON file. If you lose it or break it, please contact with ERALED service dept for the file again.
13. What is flight case & wooden case? How to choose rational packing box?
Flight case has wheels and handles which is for the rental use LED display, to make the transportation be very convenient and protect the LED display better.
Wooden case is only for one time using transportation. After unpack, it cannot be used any longer. For the fixed installation LED panel system, wooden case packing is the only way and best way for packing since the low cost and same safety level for one time using.
If your LED display screen system is for the rental use, please choose the flight case packing for your LED display screen.
14. What’s the difference between synchronous control system? What is asynchronous control system?
Synchronous & asynchronous refers to the controlling PC working together with the LED display or not. Synchronous means when the LED display screen system is working, the controlling PC must open and cannot be closed. Asynchronous control system means when the LED display is working, the controlling PC can be closed and has not further relationship with the LED sign; the LED display can work independently after the basic set up and the program making.
15. How to choose the corresponding control system for your LED display.
Product model, controlling distance & application is the main factors. One more point is that the synchronous control system alway has much better viewing effect and more powerful function.
16. What is simple cabinet, what is standard waterproof cabinet?
Simple cabinet has not backdoor, standard waterproof cabinet has backdoor, etc.
If you can make very good dustproof and waterproof system for your LED display, simple cabinet is also an optional solution when budget is limited
17. What is front maintenance, what is rear maintenance? How to choose the best servicing model for your
LED display system
Front maintenance has two means to achieve: module front maintenance & cabinet front maintenance.
Rear maintenance has only one means: from the backdoor of the cabinet.
When the display is very small, cabinet front maintenance will be more convenient.
18. What is static display? What is scanning display? What’s the difference and which is better? How to choose the best scanning model for your LED panel?
Static and scanning display is the only 2 models currently. Static display used for P14-31.25mm, when pixel pitch is smaller than 14mm, the main working method is scanning.
19. What’s remote control & wireless control? How to choose the corresponding control model for your LED display system.(need to expand further in future, not enough: What’s the difference between remote control and wireless control.)
Remote control & wireless control is very necessary when the controlling HQ is far away from the LED display screen system.
Remote control & wireless control is by IP address and internet/intranet system to achieve.
20. What is selected LEDs, what is pure green & pure blue? Why the full color LED screen need selected LEDs & also pure green & pure blue LEDs?
For the common LED chip ,the wave length difference is very big and the brightness difference is very big too if not selected LEDs.
The selected LEDs means the LEDs is choose from a certain ratio of LEDs to choose the most constant LEDs.
Pure green & pure blue means the choose the green and blue LED chips strictly by the standard of main wavelength: G: 518-520, B: 466-468
Full color LED display need pure green & pure blue LED chip since if not it cannot achieve high gray grade and the image will be very poor.
21. What is the brightness control, how to achieve automatic brightness control of FUll color LED display
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