Resample DASYLab Data to Lower Sampling Rate

[signal1]

Hi.

My hardware has built-in antialiasing filters at 20 kHz so I'll be scanning at 40 kHz minimum. 

My needed data range is low pass at 1 kHz. 

Can DASYLab resample the 40 kHz input to "decimate" the signal to the needed 1 kHz input? 

40x less data would be very helpful.  And if the data can be reduced, is this process CPU intensive (would it impose a large computational load on my computer)?

I prefer to use DASYLab but does LabView have this interpolation/decimation capability? 

Thanks,

Bob

[Neil_S.]

signal1,

In LabVIEW there are several VIs (functions) that can be used to resample a signal.  Among these are the Decimate.vi and the Resample Waveforms.vi.  The Decimate.vi averages values to obtain the resampled waveform while the Resample Waveforms.vi employs interpolation.  You can view the help for these VIs at https://www.ni.com/docs/en-US/bundle/labview-api-ref/page/vi-lib/measure/maresamp-llb/resample-wavef... and  https://www.ni.com/docs/en-US/bundle/labview-api-ref/page/vi-lib/analysis/2dsp-llb/decimate-single-s....  You can get the specific details about DASYLab from DASYLab Online support found at http://www.dasylab.com/content/mydasylab.php?action=start.

Regards,

Neil
Applications Engineer
National Instruments

[signal1]

Thanks, Neil, for the help.

Unfortunately I'm using an extra add-on module for DASYLab that does not exist in LabView. 

Because of this I can't use LabView, I'm locked into using DASYLab. 

So is there any way to resample a waveform to a lower rate in DASYLab? 

Thanks,

Bob

[Hal_L]

Hi,

I recommend contacting DASYLab support directly. DASYLab is officially supported by your distributor or MCC Techincal Support Group. Here is a list of DASYLab distrubutors and information for MCC:

DASYLab Distributors
MCC Technical Support group at 508-946-5100 or techsupport@mccdaq.com

I hope that you find this information helpful.

Regards,
Hal L.

[MD_ELECTRONIC]

You can decimate your sampling rate using the "separate" module in the "data reduction" modules, that does this job directly.

[signal1]

Thank you!

Respectfully,

Bob