SJK 00:37, 17 September 2008 (EDT)SJK 00:31, 17 September 2008 (EDT)
For this lab, I became familiar with a digital oscilloscope. I plugged in the BNC cable from the oscilloscope to the function generator. Then, I created a sine graph on the screen. I then took some measurements:
Measuring Data
SJK 00:33, 17 September 2008 (EDT)
My first sine graph
Peak to peak : 1.60 V
(max to min): 780mV to -780mV
Freq.: 961.5 Hz
Period: 1.040 ms
Other Graphs
1.) Increased the volts:
Peak to peak : 4 V
(Max to Min 'based on cursor'): 2V to -2V
Freq.: 1.03 kHz
Period: 974 s---? micro
2.) Decreased volts (lowest voltage on the F.G.):
Peak to peak : 616 mV
(Max to Min 'based on cursor'): 304mV to -304mV
Freq.: 975.5 ?Hz micro
Period: 1.025 ms
Note: The function generator could be set at any voltage (voltage only determines amplitude). The frequency at which it's set is very essential. If the frequency is too low, you'll get a condensed off scale sine graph. If the frequency is too high, you will just see a line, or half a sine graph. So I adjusted the frequency according, not too high or too low.
Taking Measurements:
1.) Measure Button - Gives data automatically.
2.) The Grid - Using the boxes on the grid, you can determine voltages and times.
3.) Cursor Button - Set cursors, determine measurements.
Triggering
Triggering enables the user to move along back and forth in the times of the wave.
Options on oscilloscope: pulse, video, edge.
Edge holds the wave.
Pulse holds the wave or moves the wave, based on settings.
Video moves the wave based on rise or fall.
Rise and Fall
Rise oscillates the wave to the right (Increasing).
Fall oscillates the wave to the left (Decreasing).
AC Coupling
I applied a large DC voltage of 12V (as instructed),and I decreased the frequency on the function generator substantially down to about 1 X 2.0 Hz. Instead of a round graph, I changed it to square. I adjusted the screen. Then, I measured the fall and rise times by using the measure button, an equation on Wikipedia, and with the cursor button: