为什么拍频信号的频谱看不见？
求助，为什么看不见拍频信号的频谱🆘 f7oJ6'K
激光器扫描区间:1545nm-1555nm pRGag~h|E
激光器扫描速度：50hz/s 也就是说扫描速度为500nm/s JbLHW26pl
延时光纤：1m .r\|9 *j<
采集卡速度:2M r!y3VmJ'm
采样点数:40000 dd:vQOF;
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