24
. Given
: Kevin takes data with a digital data acquisition system that is 14bit and has a range of 0 to 5 V.
To do
: Calculate the resolution of the A/D converter in units of millivolts.
Give your answer to three
significant digits.
Solution
:
25a
. Given
: Brian samples a voltage signal digitally for 5.12 seconds at a sampling frequency of 400 Hz. He
plugs the data into Excel, calculates an FFT, and plots the frequency spectrum.
To do
: How many
useful
frequency spectrum frequencies are obtained?
Solution
:
25b
. Given
: Brian samples a voltage signal digitally for 5.00 seconds at a sampling frequency of 400 Hz. He
plugs the data into Excel, calculates an FFT, and plots the frequency spectrum.
To do
: How many
useful
frequency spectrum frequencies are obtained?
Solution
:
25c
. Given
: Brian samples a voltage signal digitally for 5.00 seconds at a sampling frequency of 400 Hz. He
plugs the data into Excel, calculates an FFT, and plots the frequency spectrum.
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 Spring '08
 staff
 Digital Signal Processing, Hertz, frequency spectrum

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