说明：  基于虚拟仪器的频谱分析仪设计运用LabVIEW 软件 ,结合数据采集模块 LabJack U12 ,实现频谱分析虚拟仪器的设计。
(Based on Virtual Instrument spectrum analyzer designed to use LabVIEW software, combined with data acquisition module LabJack U12, the realization of spectral analysis of virtual instrument design.)