bandwidth of the function "power spectrum".

I use signalexpress 2009. To analyze the acquired time signal from the area of the previous step in the same project, I applied the power spectrum function.

DAQmx Aquire step is configured as follows:

Acquisition mode: continuous samples

samples read: 1024

Rate (Hz): 1024

With this configuration, I expect a bandwidth of 0-512 Hz power spectrum analysis. Instead, the function of the power spectrum gave me 0-820 Hz frequency components.

How can I trust the result of 512Hz on?

I've attached screenshots of:

(1) my application project configuration

(2) result of frequency domain


Very useful information, thanks to you both for helping!

Tags: NI Products

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