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Running the Software

4. No. of samples = 30

Data rate (sps) = 500

Show data for the last 1 secs

Then display Error message “Insufficient # of samples for FFT calculation” since # of samples

for FFT which is power of 2 = 16 ≤ min ( (500 x 1) , 30 )

5. No. of samples = 32

Data rate (sps) = 500

Show data for the last 2 secs

# of samples for FFT which is power of 2 = 32 ≤ min ( (500 x 2) , 32 )

Since (# of samples for FFT calc. == No. of samples) and If (Filter Type = None) then # of

samples for FFT calc. which is power of 2 = 32

Since (# of samples for FFT calc. == No. of samples) and If (Filter Type = Notch) then an error

msg “Insufficient # of samples for FFT calculation” will be displayed since # of samples for FFT

calc. which is power of 2 = (32 / 2) < 32 samples

Figure 31. ADC Capture and Analysis Tab

Figure 32. Scope Analysis: Test Results

SLAU480C–January 2013–Revised May 2014 AFE4400 and AFE4490 Development Guide

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