save waveform of tds3000 with time axis

[rick2047]

Hello,

I am relatively new to LabVIEW and am trying to capture a wave from a TDS3054C oscilloscope. I have installed the drivers and have successfully made a VI which displays the wavefrom on a waveform graph (VI attached). Now I want to save the waveform into an excel file which will allow me analyze it. Now the problem is, if I use the "export to spreasheet" block under Programming>Waveforms>File IO it writes it so that the time is written as time stamps. That is not how I want it. I have available with me the waveform, t0 and dt how can I generate the X-asix from it?

[Dennis_Knutson]

Your VI does not have any Export Waveforms to Spreadsheet and you don't say how you actually want the file output to look.

[billko]

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@rick2047 wrote:

Hello,

I am relatively new to LabVIEW and am trying to capture a wave from a TDS3054C oscilloscope. I have installed the drivers and have successfully made a VI which displays the wavefrom on a waveform graph (VI attached). Now I want to save the waveform into an excel file which will allow me analyze it. Now the problem is, if I use the "export to spreasheet" block under Programming>Waveforms>File IO it writes it so that the time is written as time stamps. That is not how I want it. I have available with me the waveform, t0 and dt how can I generate the X-asix from it?

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You should be able to change the waveform properties to use relative time instead.

[rick2047]

Basically I want to store the exact same thing that is being shown by the waveform graph the scale goes from -0.002 to 0.002 but the spreadsheet when saved it is not that way (example of what is being saved in test.xls) but I want the original x values as shown in the waveform graph which goes from -.002 to .002.

[billko]

Ugh, I see the problem you are having.  Unless someone has a better plan, I'd convert the timestamp to seconds and use the write to spreadsheet file.  There has to be a better way, though... anyone?

[Dennis_Knutson]

Simple enough with the Write to Spreadsheet.