How to measure frequency of analog signal using python APIs provided ?

[Mina Sameh]

How to measure frequency of analog signal using python APIs provided ?

[Mina Sameh]

Hi @attila , Is there any APIs provided for frequency measurment of an analog input signal ?

[attila]

Hi @Mina Sameh

See the following post:

 

[Mina Sameh]

@attila Thanks a lot!

[abia]

@Mina Sameh

Hey mina Im trying to do the same thing here, measure the freq of input signal through python sdk.

Did u have any luck? I checked the spectrum analyzer link thats in this thread but couldn't seem to figure it out.

 

 

[attila]

Hi @Mina Sameh @abia

See the updated example: AnalogIn_FFT.py

iPeak1 = 0
vMax = float('-inf')
for i in range(5, nBins): # skip DC
    if rgBins1[i] < vMax: continue
    vMax = rgBins1[i]
    iPeak1 = i

print("C1 peak: ", hzTop*iPeak1/(nBins-1)/1000,"MHz")

if iPeak1 < nBins: # weighted average
    s = 0
    m = 0
    for i in range(-2,3):
        t = pow(10,rgBins1[iPeak1+i])
        s += (iPeak1+i)*t
        m += t
    iPeak1 = s/m
    print("C1 peak weighted: ",hzTop*iPeak1/(nBins-1)/1000,"MHz")