how to filter digital signal which aquired using DAQ

[suni]

Hello

Can somebody tell me how to build digital notch filter? I aquired a signal using DAQ 6025E then i wanted to feed this aquired singal to the notch filter. I am having dificulty doing it. Thanks

[TMC-NI]

Hi suni,

You can find an example of this application in the LabVIEW example finder.  The name of the example is "Dual Channel Spectral Measurement of a Filter Design.vi"

[suni]

Hi

I directed external voltage signal through the band stop filter using DAQ assist and digital notch filter vi. The graph showed only o to 1 second on time axis. how do i display real time filtered signal meaning i want to see output after 5sec later. I used wave form graph siganl.vi tto diplay filtered sigan. And how do I output this filtered signal using daq card. I am using E6025 DAQ card. I attached the graph of filtered signal

Thanks

[Mark_E]

I think you mean that instead of seeing whatever default the X axis is set to, you want to see a custom time, is that correct? On the scale you want to change, right-click and uncheck "Autoscale X".



Then double-click the scale and type whatever value you want the scale to be. (See the highlighted part on the second picture.)




Message Edited by Mark E on 04-16-2008 01:19 PM

[suni]

Hi
Thanks for the reply. Can you tell me how to output this filtered signal form the daq card so i can used it to control the servo? Thanks

[Loquito]

Have you tried the "Export Signal" VI?