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through the analysis of the traditional PV module test equipment test mode, in this paper a kind of a flash will be able to complete the work of testing method for nonuniform plane irradiation test, make full use of the international well-known company new production of components in the design, the design of the signal conditioning circuit and data acquisition circuit, circuit design simple, low cost and easy to implement, acquisition accuracy meets the design requirements. And the test program of the upper computer is compiled, and the test of irradiation nonuniformity is verified. The results show that the testing process is simple, the data is reliable, and the production efficiency is high.