Sampling Rate

LabVIEW 2018 Help


Edition Date: March 2018
Part Number: 371361R-01
View Product Info

DOWNLOAD (Windows Only)


LabVIEW 2016 Help
LabVIEW 2017 Help
LabVIEW 2018 Help
LabVIEW 2019 Help
LabVIEW 2020 Help

The sampling rate is important to the success of a filtering operation. The maximum frequency component of the signal of interest usually determines the sampling rate. In general, choose a sampling rate 10 times higher than the highest frequency component of the signal of interest.

Make exceptions to the previous sampling rate guideline when filter cut-off frequencies must be very close to either DC or the Nyquist frequency. Filters with cut-off frequencies close to DC or the Nyquist frequency might have a slow rate of convergence. You can take the following actions to overcome the slow convergence:

  • If the cut-off is too close to the Nyquist frequency, increase the sampling rate.
  • If the cut-off is too close to DC, reduce the sampling rate.

In general, adjust the sampling rate only if you encounter problems.

Related concepts

WAS THIS ARTICLE HELPFUL?

Not Helpful