LED display video cable refers to the cable used to connect the LED display and the signal source (such as computer, player, etc.) to transmit video signals and control signals.
This type of cable plays a vital role in the LED display system. They are responsible for transmitting video content from the signal source to the display to realize the display and control of the image.
The following is a detailed introduction to the LED display video cable:
Definition and function
Definition: LED display video cable is a specially designed cable used to transmit video and control signals in the LED display system.
Function:
1. Transmit video signal: transmit video content (such as images, videos, etc.) from the signal source to the LED display.
2. Transmit control signal: In addition to the video signal, it may also include some control signals to control the brightness, contrast, color and other parameters of the display, as well as to achieve more complex display effects.
Interface type
The interface types of LED display video cables are varied to adapt to different application scenarios and needs. Common interface types include but are not limited to the following:
HDMI interface: Based on DVI technology, it is a fully digital image and sound transmission interface that can transmit uncompressed audio and video signals and provide high-quality video and audio transmission.
VGA interface: adopts asymmetrically distributed 15pin connection mode, and the image signal stored in digital format in the video memory is analog modulated into analog high-frequency signal in RAMDAC, and then output to the LED screen for imaging.
DVI interface: mainly used to connect to a computer with an independent graphics card to display the computer's RGB signal. The DVI digital interface transmits all content in digital format to ensure the transmission quality.
AV interface: also known as the RCA standard video input interface, it consists of three colors of red, white and yellow lines, of which the yellow line is the video transmission line, and the red and white lines are responsible for sound transmission. Although the AV interface realizes the separation of audio and video transmission, the color signal loss is large because it transmits a mixed brightness/chromaticity video signal, which affects the image quality.
HUB75E interface: an interface specially used to connect LED display screens and control cards, with standard physical size and pin definition, including data line, control line and power line, to realize data transmission and control functions.
Features and selection
Features:
1. Transmission performance: different interface types have different transmission bandwidth and signal quality. Choosing the right interface type is crucial to the display effect.
2. Compatibility: Consider whether the interface types of the signal source and the display screen match to ensure smooth connection and signal transmission.
3. Durability: Choose cables with reliable quality to ensure that they are not easily damaged during long-term use.
Selection suggestions:
1. Choose the appropriate interface type according to the application scenario and requirements.
2. Pay attention to the length and quality of the cable to ensure the stability and reliability of signal transmission.
3. Follow relevant standards and specifications for connection and wiring to ensure the safety and stability of the system.
Application and precautions
Application: LED display video cables are widely used in various LED display systems, including commercial advertisements, stage performances, stadiums and other places.
Precautions:
1. During the connection and wiring process, make sure the power is turned off to avoid the risk of electric shock.
2. Follow the relevant operating procedures and wiring diagrams for connection and wiring to avoid wrong connection or missing connection.
3. Regularly check the connection status and wear of the cables, and replace damaged cables in time to ensure the normal operation of the system.
In summary, LED display video cables are an indispensable part of the LED display system.
They are responsible for transmitting video and control signals from the signal source to the display to achieve high-quality display effects.
During the selection and use process, it is necessary to pay attention to factors such as interface type, transmission performance, compatibility and durability to ensure the stability and reliability of the system.