Goodmorning everyone,
I'm taking vibration measurement of a machining process, with sampling frequency of 51,2 kHz for 10 seconds. My problem is that I sample the whole process but i'd need just the a part of the seady state phase, appoximately 3 s, from 5 to 8.
I need to perform a FFT analysis on this sample and i'm wondering if ther is a method to perform FFT online on the interval of interest, without recurring to the post processing.
Since i'm not sure the thing I want can be done i've started building a post process programm that import data from an excel file and perform FFT. Since i'm really new with labview I used an example programm found on this website ( attached file).
But it looks like it doesn't work properly bacause it doesn't "see" the commas in the value ( for example 0,4 bacomes 4) and the minus sign ( -0,12 bacomes 12 ). Which is the problem in this programm?
Thank you for your help