Comparing two waveforms

[pratheek]

Hi

I am having a 11801B digital sampling oscilloscope and I need to compare the waveforms of a DUT for TDR test conducted. For a good device, the waveform should be stored in pc and must be able to use it whenever needed to compare with the failure device which is obtained from the oscilloscope to calculate the time difference. So I need both the waveforms in a single graph for comparision. I tried with "save image in BMP format" for the good device waveform and "plot image"  to recall the waveform for comparing with the waveform of failure device, but that doesn't worked out. I'm fairly new to labview. Could someone please suggest me how to do this. Thankyou in advance

Best Regards

Pratheek

[mikeporter · Accepted solution]

Don't worry about saving the images -- for this part of the process at least.

Save the array of datapoints for the good example to disk however you want too save it, and when a bad one occurs plot the array coming from the bad one on the same graph as the good exemplar.

Mike...