First, the importance of LED display control card
The LED display control card is the core component of the LED graphic display. It is mainly responsible for receiving the display information from the serial port of the computer and putting it into the frame memory. It can generate the serial display data and scanning required by the LED display according to the partition drive mode. Control timing. We can see the importance of the LED display control card from the word “core componentsâ€.
Common problems in the use of LED display control card are generally divided into: display problems, communication problems, functional requirements, solutions trilogy: press the test key (test power and cable connections), serial communication software, switch point software Machine (test port and communication line), disconnect all the beads of the power and then turn off (initialization).
Second, display problem solution
1. In the case of a normal control card, why is there no display or abnormal brightness?
A: After the control card and the display driver are connected, the default is 16 scans. If there is no display, check whether the data polarity and OE polarity setting in the control software are correct. If the brightness is abnormal, one line is highlighted, indicating that the OE setting is reversed. , Please set OE correctly.
2. Why does the display screen not display properly after the information is loaded?
A: Check if the scan output is selected correctly in "LED Display Control Card Settings".
3. After the success of the transmission, the display screen shows Huaping, garbled, regular movement (can not see the word)?
A: The typical scan mode selection is wrong, semi-outdoor, outdoor general 4 scan, indoor 16 scan, car screen 8 scan, set the screen after the change saved and sent successfully on it.
4. After the transmission is successful, the horizontal lines appear bright across the display.
A: The direction of the cable is reversed. Press the test button (which is included on the control card). This is usually the case. The connection between the led display and the control card is reversed.
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