Hi all:
I was in the EE lab at my school last week working on my first lab assignment for the semester. I was playing around with the oscilloscope. I connected a probe to the o'scope, and stuck a piece of wire to the probe. I left the ground lead floating not connected to the scope. After obtaining the datapoints from the scope screen onto my computer, I ran an FFT on MATLAB. The frequency response shows rapid oscillations that begin around 100.7 Hz. What could be the reason for such oscillations? I believe the room acoustics (material, walls, etc.) and room surroundings (people talking, computers/electronics with their hmmmm sound etc.) play some part in causing these oscillations. What other factors might be involved?
I was in the EE lab at my school last week working on my first lab assignment for the semester. I was playing around with the oscilloscope. I connected a probe to the o'scope, and stuck a piece of wire to the probe. I left the ground lead floating not connected to the scope. After obtaining the datapoints from the scope screen onto my computer, I ran an FFT on MATLAB. The frequency response shows rapid oscillations that begin around 100.7 Hz. What could be the reason for such oscillations? I believe the room acoustics (material, walls, etc.) and room surroundings (people talking, computers/electronics with their hmmmm sound etc.) play some part in causing these oscillations. What other factors might be involved?