What is the testing principle of PCBA?
PCBA testing is a crucial step in ensuring the quality of production and delivery. It refers to the production of FCT testing fixtures based on customer designed testing points, procedures, and steps, and then placing the PCBA board on the FCT testing rack to complete the testing process. The testing principle of PCBA is to connect the test points on the PCBA board through the FCT test stand, forming a complete path, connecting the computer and the burner, and uploading the MCU program. The MCU program will capture the user's input actions (such as long pressing the switch for 3 seconds), and through calculation, control the on/off of the adjacent circuit (such as flashing LED) or drive the motor to rotate. By observing the voltage and current values between test points on the FCT test stand, and verifying whether these input and output actions match the design, the entire PCBA board can be tested.
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