To improve the test efficiency and intelligent level,reduce the complexity of the test,using the Visual studio 2017 platform,based on FPGA and STM32,designing a set of virtual signal source,oscilloscope and virtual machine has waveform display,parameter measurement,spectrum analysis and frequency,amplitude adjustable sine wave signal output,and other functions.Experimental tests show that the signal source generates sinusoidal signal,the output frequency is adjustable from 1Hz~100MHz,and the output amplitude is adjustable within 5mV~1V.Oscilloscope meas...