How do I change my fft display resolution

[banj]

I'm sampling at 6000 hz but when I display my fft it only has a resolution of 1hz. How can I increase this resolution?

[johnsold]

FFT resolution depends on the number of samples as well as the sampling rate. More samples => better resolution. Check the help files. I think they have some discussion of the resolution. Also any textbook on Fourier analysis will give the theory (not for the mathematically faint-hearted).

Lynn

[Alv]

Try using the FFT Zoom. I also came across this problem recently. I increased the resolution by using the fft zoom to meet my needs.

[Matt_F]

The following links should help in the theory of FFT and applying it in LabVIEW.

Making Frequency Domain Measurements

An Overview of Frequency-Domain Measurements

Regards,

Matt F