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🆘 j"hfsA<_I
激光器扫描区间:1545nm-1555nm zrri&QDF<
激光器扫描速度：50hz/s 也就是说扫描速度为500nm/s 6p])2]N>p
延时光纤：1m =ot Jf~
采集卡速度:2M ND77(I$3s
采样点数:40000 pb t/i+!
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