Post Processing on Imported Data

Is it possible to perform post processing on imported data (txt file) that was not measured using dewesoft hardware.

Specifically, I have a text file of a vibration signal - I want to perform an FFT on the whole signal, but I am unable to add the imported data to a FFT graph. See image below where no signal is available when the FFT is selected.

I changed the channel type to sync and this solved the issue.

Dear Stuart,

We're glad that you solved the problem your own.

Best regards

Matic Pevec