Bandwidth limited graph

[OrlEngr]

I am digitizing a signal @ 100 Mhz. The signal can have a frequency of up to 20MHz, so not many points on the signal to graph. Therefore the straight line connection algorithm that LABView uses results in a poor looking graph. Is there an interpolation VI that can help provide more data points ... I need to Bandwidth limit the interpolation to make the graph look as expected. Any ideaS?

[rpursley8]

Here is one that I like to use. I generates the ideal interpolation by doing the filtering in the frequency domain. The vi upsamples the signal, does a FFT on it, windows the signal, and then does an inverse FFT. This vi will allow you to upsample from 2 to 10 times.

[Xu]

Try Spline Interpolation vi in LabVIEW 7.1 (Not in Base Package).