LMX2571配好寄存器以后,产生两个频率,230M和280M,两个频率以30ms周期切换,示波器测得频率转换时间位100us左右,用频谱测量两个频率,如图,产生了杂散,杂散频率不固定,不知道是什么原因。
PS:两个频率一大一小是因为只接了一个探头。
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