With the rapid development of LED industry, led display control card market demand is also increasing, and wireless LED control card can be a good customer to meet the unified management, cluster sent to the needs of the market. Such as residential publicity LED screen, car screen, government projects, mobile, telecommunications, bank door screen, bulk installation, easy management, to maintain a state without maintenance, is the best choice for users. Then the user in the use of control cards, in order to avoid unnecessary losses, should note the following:
First, the control card to keep working in a dry, relatively stable environment, too high temperature, and humidity, there are more dusty environment, the control card is extremely unfavorable.
Second, in the absence of power failure, is strictly prohibited plug the serial port, so as to avoid improper operation and damage the computer serial port and control card serial port.
Third, the system charged work is strictly prohibited to adjust the control card input voltage, so as to avoid improper adjustment, the voltage is too high and damage the computer serial port and control card serial port. Control card normal operating voltage of 5V. Adjust the power supply voltage, you should remove the control card, with a multimeter to measure the slow adjustment.
Fourth, the control card is strictly prohibited on the ground side and the display frame shorted, otherwise the display frame once gathered static, easy to damage the computer serial port and control card serial port, resulting in unstable communications, static electricity will burn out the control card and screen On the display unit. Therefore, in the outdoor screen or communication distance, it is recommended that users must use the serial isolator to avoid the ground loop, surge, lightning, hot plug and other harsh environments on the computer serial port and control card serial port damage.
Fifth, you must ensure that the control card and the computer serial port of the correct connection, so as not to damage the input signal is not correct and control the serial port and computer serial port.
6, the control card do not connect to the unit board. As far as possible directly to the switching power supply, the unit board in the process of voltage and its instability. Will cause the control card when the slow, serious can not communicate or run the program to run back to repair, especially the U disk control card, in the case of voltage instability may not read the disk or read the disk error.
Seven indoor units, 16 sweep unit board should not take the whole screen debugging, a lot of indoor monochrome or two-color, or even full color, and then no state of direct control card connected to the power, there may be a large area burned behind the unit board sweep drive 4953 chip The Debugging only one unit board debugging, debugging is complete unplug the power, then control card.
Led display control card is the core of the product, master the above control card using common sense is very necessary.