Help Saving and recalling a TDS Waveform from a file.

[rcard53762]

I have tried everything I can find in the examples with no luck.

I have a Waveform that I have acquired on my TDS 360. I have it ouput to a graph on the VI front panel.

That works great.

The Graphed waveform is exactly what I need.

Now all I want to do is save this to a file and be able to recall it later on another graph.

I have to do 10 acquistions in a row and store each one as a serperate file.

I want to be able to recall them one by one to a graph for analysis.

Please does anyone have an VI I can copy.

[Ching_F.]

Hi rcard53762,

Have you taken a look at our Write to Measurement File Express VI and Read from Measurement File Express VI?  These VI's will bring up a configuration dialog box when you place them on the block diagram that walks you through setting up your file I/O.  If you do not want to use these, you can also take a look at the Write-Read Text File.vi in the NI Example Finder.  This example shows different methods of writing and reading from file.  To get to this example, open LabVIEW » Help » Find Examples » Fundamentals » File Input and Ouput » Write-Read Text File.vi.

Please let me know if you have any further questions.  Best of luck on your application!!

[rcard53762]

This is what I get when I wire the TDS Graph to the File Write Express.

See Attachment.

[Dennis_Knutson]

Try this. The Tek Read Waveform returns a cluster that the waveform graph can accept but the Write Measurement File expects either a signal data type or a waveform data type. The code below will convert the cluster to a waveform data type.

Message Edited by Dennis Knutson on 02-27-2007 10:59 AM

[rcard53762]

Thanks for the help that worked.