How to save several measurement into one file?

[happybird]

Hellow!
I have a TKTDS read waveform.Vi in a for loop,i need to save the data in a file,but every time i was asked to save to a new file,it is not convinent,so how to save all the measurement in one file instead of several file? thanks!

[altenbach]

How are you writing to the file?

(Assuming you are using one of the high-level File I/O VIs.) Make sure to keep the current filename in a shift register. If the file path is empty, you'll always get a dialog. Also wire a "true" to the "append?" terminal so the data is added to the end of the current file.

To save resources, you should probably use low-leve File I/O. Open the file for writing once outside the loop, then keep writing to it inside the loop. Close the file outside the loop when the VI stops.

[happybird]

I use "write spreadsheet to file.vi" what 's low level write file?can you give me a example? thanks!

[altenbach]

Have a look at e.g. the example "Write to text file" that ships with LabVIEW. You can find it using the example browser.

[ian_fung]

Please find attached Example VI for your reference.

Cheers!