The flying probe test of PCB (Printed Circuit Board) is a testing method used to detect the electrical performance and faults of PCB.

In the flying probe test, the testing equipment uses multiple movable probes to contact the test points on the PCB. These probes can move quickly and precisely on the surface of the PCB, conduct electrical measurements on different networks and circuits, and detect whether there are faults such as open circuits and short circuits.

Compared with traditional testing methods (such as using fixed test fixtures), the flying probe test has higher flexibility, can adapt to different types and layouts of PCB, and there is no need to specially make expensive test fixtures for each PCB. It can effectively detect the defects and problems generated during the manufacturing process of PCB, and improve the quality and reliability of PCB.

For example, in the production of a complex multilayer PCB, the flying probe test can accurately detect short circuits or open circuits between the inner layers of the lines, ensuring that the PCB can work properly after assembling electronic components.