Flying Probe Tester (Flying Probe Tester) is a type of instrument used to test PCB (printed circuit board) with high density, number of layers, large wiring density and small distance between PCBs. PCB Circuit board tester main test circuit board insulation and conduction value. PCB tester generally uses the "comparison of the true value of location", the test process and fault points for real-time monitoring to ensure the accuracy of the test. With fine pitch, not limited by the grid, testing flexibility, speed and so on.