这是一个关于信号源和频率计数器的labview程序，控制信号源产生不同频率和幅度的信号，然后频率计数器对其进行计数，最后通过求艾伦偏差，确定信号的稳定性-This is a program on the source and frequency counter labview control signal source to produce a different frequency and amplitude of the signal, then the frequency counter