The control card is the core component of the full-color LED display. It is mainly responsible for receiving the picture display information from the computer serial port, putting it into the frame memory, and generating the serial display data and scanning control timing required by the LED display according to the partition drive mode. We can see the importance of the LED display control card from the word "core component".
Cartelă de control pentru afișaj cu LED-uri color
Problemele obișnuite în utilizarea plăcii de control a afișajului LED sunt, în general, împărțite în: probleme de afișare, probleme de comunicare și probleme de cerințe funcționale. Soluția este o trilogie: apăsați butonul de testare (testați conexiunea dintre sursa de alimentare și cablu) și faceți clic pe comutatorul din software pentru comunicarea în serie. Aparatul (portul de testare și linia de comunicație), deconectați sursa de alimentare și apoi porniți (inițializare) după ce toate perlele lămpii sunt oprite.
Show solution to problem
1. When the control card is normal, why does the display have no display or the brightness is abnormal?
Answer: After the control card is connected to the display driver, the default is 16 scans. If there is no display, please check whether the data polarity and OE polarity settings in the control software are correct; if the brightness is abnormal, one line is particularly bright, indicating that the OE setting is reversed , Please set OE correctly.
2. Why can't the display screen display normally after the information is loaded?
Answer: Check whether the scan output selection in "LED display control card settings" is correct.
3. After the transmission is successful, the display screen shows garbled, garbled, and regular movement (the characters cannot be seen)?
Answer: The typical scanning method is wrong. For semi-outdoor and outdoor, 4 scans, indoor 16 scans, car screen 8 scans, you can save and send successfully after changing the setting screen parameters.
4. After the sending is successful, there will be a horizontal bright line on the display, the one that lights up one line every few lines?
Answer: The direction of the cable is reversed. Press the test button (included on the control card). In this case, it is generally not switched. Just connect the end connected to the led display and the control card in reverse.
