Open-loop power linearity automatic debugging method applied to signal generator

In order to improve the accuracy of the open-loop power linearity index and the operability of debugging and meet the demand of instrument manufacturability, the invention provides an open-loop power linearity automatic debugging method. The ALC open-loop power linearity can be debugged automatically by reading the internal test voltage and through a corresponding algorithm under the control of internal debugging software. The open-loop power linearity index and the debugging efficiency are improved, and the cost of production is lowered effectively.