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ELVIS示波器失真
硬件: Multifunction DAQ (MIO)>>Connector Blocks>>NI ELVIS
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问题: 为什么当信号高于+/-10V的时候，示波器显示的波形变成平坦的了？
解答:
NI ELVIS上的示波器只能测量+/-10V之内的信号。波形变得平坦的部分是因为输入信号超过了测量范围。传统仪器此时会显示一个警告，但是NI ELVIS并不显示这个警告。
下图是当测量信号超过测量范围的时候，实际的信号波形和测量到的信号波形的示意图。白色曲线是实际信号，红色曲线是采集到的失真的信号。
相关链接: KnowledgeBase 45GFAV4G : How do I cause a waveform to clip an analog signal to a specified value?
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报告日期: 04/23/2012
最近更新: 02/27/2015
文档编号: 5WMG9B00