Signals in equipment system are tested and gathered accurately in time, which are the important premises to ensure the fault diagnosis servicing of military equipment. Many digital signals in tracking radar of naval gun can not use the ordinary instruments and apparatuses to measure under the military environment. According to the actual situation, a signal testing system which uses “induced interactive mode” to input signals and realize the communication between equipment units and this system. At the same time, different acquisition ways are designed aiming at the difference on characteristic of testing signals, then the best acquisition signals are obtained, the accuracy of testing and flexibility of configuration are ensured.