The invention relates to a circuit board tester which comprises a
power module, a
signal generation module, a
signal distribution module, a testing module, and an indication module, wherein the
power module comprises a power fuse component, a power switch component and a
short circuit alarm circuit and is used for providing a stable
voltage for a tested circuit board; the
signal generation module comprises a signal generation component and a
signal generator and is used for producing a testing signal required for the test of a
data field; the signal distribution module comprises a dial switch component and is used for distributing the testing signal; the testing module comprises a testing interface circuit and measurement equipment and is used for testing the tested circuit board; the indication module comprises an indication circuit and is used for indicating input and output signals. The circuit board tester uses a shift knob, the functions are clear at a glance, the operations are simple, the modules are divided according to the functions, the same parts are combined together, so that the maintenance is facilitated; a plug-in structure is adopted, and the
maintainability, the reliability and the universality are very high.