A sinusoid signal with an amplitude of 20 microvolts and a frequency of 20 Hz is captured on a data acquisition system. The signal is corrupted with 10 microvolts of 60 Hz noise (power line). The code below shows the power spectrum of the signal as a function of frequency. Note that the x-axis is labeled normalized frequency (pi) where w=2pi"f/fs. Place a cursor on each peak and indicate the magnitude and verify that the frequency is correct.
A data acquisition system works with 16 bits. The signal to be acquired has a dynamic range of 20 mV. What is the A/D resolution of the DAQ?
a) 3.05 x 10⁻¹ microvolts
b) 3.05 x 10⁻⁴ microvolts
c) 3.05 x 10⁻⁷ microvolts
d) 3.05 x 10⁻¹⁰ microvolts