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LED LCD screen control card common problems

2019-10-10
Times

The control card of LED LCD screen is the core component of LED graphics and text display screen. It is responsible for receiving the picture display information from the serial port of the computer, placing it into frame memory, and generating the serial display data and scanning control sequence required by the LED display screen according to the mode of partition drive. The effect of the LED screen is related to it.


What are the categories of LED LCD control CARDS?


It can be divided into three types: single and double color control card, colorful control card and full color control card.


What should I pay attention to when using the LED LCD control card?


Different brands of control CARDS and corresponding installation software are different. Same brand also cent different model, function difference is very big. Small area of the monochrome screen common simple non-partition control card, cost-effective; And the area is slightly bigger can use partition control card, the price is a few taller.

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What is the connection mode of LED LCD control card?


Control card and computer connection: network port (TCP/IP), serial port (RS232, RS485), U disk transmission, GPRS wireless connection, Zigbee wireless connection and other main ways.


How to select LED display control card?


First of all, I understand the specification and size of the LED LCD screen, calculate the points, and know the effect I need, whether it is synchronous or asynchronous, whether it needs secondary development; Then, determine synchronous asynchronous, determine the effect, determine the point range, determine the price range, and finally determine the card; Control card to choose the most appropriate, not necessarily high price, good quality is the most suitable. Finally, the software is not suitable for themselves and customers.


Can't find LED LCD control card how to do?


First, make sure the control card is compatible with the software.


The second point: check whether the connection line is loose or loose, check and confirm that the serial port line used to connect the control card is accompanied by the control card, some control CARDS use straight (2-3, 3-3, 5-5), and some control CARDS use (2-3, 3-2, 5-5).


Third: make sure the control system hardware is properly powered.


Fourth point: the control card software and their choice of control card to choose the correct product model, the correct transmission mode, the correct serial port number, the correct baud rate and the software provided by the dial code switch diagram correctly set the control system hardware address and baud rate.


Fifth point: if the load still fails after the above inspection and correction, please use the multimeter to measure whether the serial port of the connected computer or control system hardware is damaged, so as to confirm whether it should be returned to the computer manufacturer or the control system hardware for inspection.


Sixth point: if the fifth step is not convenient, please contact the manufacturer to provide technical support.


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