Hi just wondering if anyone has a good suggestion for measuring and plotting the magnitude of the impedance at different frequencies of a guitar pickup.

So far I have used a function generator in series with a known resistance R and my pickup connected through the input jack and cable and played around with different frequencies.

At each frequency I measure the voltage across both R and the pickup and I can find the current as Vr/R and since the pickup is in series with R I can find out what the impedance is: |Z| = Vpickup/I for different frequencies.

Wondering if anyone has another idea on performing this measurement.

Cheers,

JP