Abstract:In recent years, The function and performance of aviation weapon is increasing rapidly, Airborne computer processing ability is also becoming stronger. As an important part of processing multiple interface signals, Interface module plays a vital role in airborne computer. Based on the fault injection technology and the widely used analog signal acquisition circuit, Designed the analog signal generating circuit to injection fault for analog signal acquisition circuit, with the test software to complete the detection of the analog signal acquisition circuit, so as to improve the test performance of the airborne computer.