1, resolution
The number of rows and columns of LED display pixels is called the resolution of the LED display. The resolution is the total number of pixels in the display, which determines the information capacity of a display.
2, LED brightness
Under normal circumstances, the brightness of the indoor LED display and the brightness of the outdoor LED display are different. Under normal circumstances, the light intensity of the indoor LED display is 500μcd-50mcd, and the light intensity of the outdoor LED display is 100mcd-1000mcd, even Above 1000mcd.
3. Point spacing, pixel density and information capacity
The dot pitch refers to the center distance of two or two pixels of the LED display. The number of pixels per unit area is called the pixel density, and the amount of display content per unit area is called the information capacity. The dot pitch, pixel density, and information capacity are the same concepts described. That is, the dot pitch is the pixel density from the distance between two pixels. The dot pitch and pixel density are the physical properties of the display, and the information capacity is the pixel density information. The unit of capacity of the carrying capacity. The smaller the dot pitch, the higher the pixel density, the more information capacity, and the closer the distance is suitable for viewing. The larger the dot pitch, the lower the pixel density, the smaller the information capacity, and the farther the distance is suitable for viewing.
4, gray
Gray scale refers to the degree of light and darkness of a pixel, and the gray level of a primary color generally has 8 to 1024 levels. Under normal circumstances, the gray scale of the LED display is 256 levels.
5, LED pixel module
The LEDs are arranged in a matrix or pen segment and are pre-formed into standard sized modules. The pixel module for the outdoor display screen is also referred to as a header bundle module because each pixel is composed of two or more LED tube bundles.
6, double primary color
Double-click the color LED display, that is, each pixel has two LED dies, red and green dies. When the red ray is bright, the pixel is red. When the green ray is bright, the pixel is green, red and green. When both dies are lit at the same time, the pixel is yellow.
7, full color
The red and green double primary colors plus the blue primary color form the full color of the three primary colors. Since the technology for forming full-color blue tubes and pure green dies is now mature, the market is basically full-color.
Fiber Optic Modem is a type of RS-232/RS-485/RS-422 serial port fiber optic modem. It adopts industrial standard design and its wall type outface design supports DIN-rail standard lead rail installation, featuring easy installation. Presently many users make use of RS-232/RS-485/RS-422 serial port fiber optic modem to solve the electromagnetic interference in engineers and to extend the RS-232/RS-485/RS-422 serial port transmission distance to several or even tens of kilometers.Fiber Optic Modem can provide users with RS-232/RS-485/RS-422 serial port end-to-end transparent transmission. Since signals are transmitted over fibers and these optical signals are free of electrical conductivity, they have strong anti-interference capacity and are immune to high-voltage power or thunders.
RS485/RS422/RS232 To Fiber Converter
RS485 To Fiber Converter,RS422 To Fiber Converter,RS232 To Fiber Converter
Shenzhen N-net High-Tech Co.,Ltd , http://www.nnetswitch.com