HBM Genesis GEN5i User Manual page 121

I2679-4.0 en
As an example assume a sweep of 8192 points (N=8192) and a sample rate of
40.96 kHz. This will yield the following:
Frequency resolution Δf = (½ * 40960) / (½ * 8192) = 5 Hz
l
Number of frequency domain points: N/2 = 4096
l
The minimum frequency component that can be measured is equal to the
l
frequency resolution Δf = 5 Hz
The maximum frequency component that can be measured is 40.96 kHz /
l
2 = 20.48 kHz
The FFT X-scale (frequency) will start at 5 Hz, end at 20480 Hz, and has 4096
points.
GEN5i
121