M系列資料擷取卡的截止頻率(Cutoff Frequency)為多少
硬體: Multifunction DAQ (MIO)>>M Series>>PXI-6284, Multifunction DAQ (MIO)>>M Series>>PXI-6281, Multifunction DAQ (MIO)>>M Series>>PCI-6281, Multifunction DAQ (MIO)>>M Series>>PXI-6280, Multifunction DAQ (MIO)>>M Series>>PCI-6280, Multifunction DAQ (MIO)>>M Series>>PCI-6284, Multifunction DAQ (MIO)>>M Series>>PXI-6289
問題: 就我所知高精準度的M系列(628x)資料擷取卡有內建低通濾波器,其截止頻率(cutoff frequency)為多少呢?若不啟動濾波功能,它的帶寬(bandwidth)為多少?
解答: 啟動濾波功能時,其濾波截止頻率(-3 dB衰退點)為40 kHz。若不使用濾波器,其類比輸入的帶寬為750 kHz。
M系列資料擷取卡的類比觸發可以透過類比輸入通道或APFI類比觸發通道。關閉濾波器,觸發訊號接到類比通道時,類比觸發的帶寬為700 kHz。假如觸發訊號接到APFI通道,不論是否開啟濾波器,其類比觸發的帶寬階為5MHz。
相關連結: Current Revisions: M Series Devices
KnowledgeBase 3GU8OCFQ: When Does Triggering Require Use of a PFI Line Versus an APFI Line?
附加檔案:
報告日期: 02/02/2005
最後更新: 07/26/2005
文件偏號: 3I1CED33
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