User:Manuel Franco Jr./Notebook/Physics Lab 307/2008/09/10
Oscilloscope Lab | <html><img src="/images/9/94/Report.png" border="0" /></html> Main project page <html><img src="/images/c/c3/Resultset_previous.png" border="0" /></html>Previous entry<html> </html>Next entry<html><img src="/images/5/5c/Resultset_next.png" border="0" /></html> |
Oscilloscope LabFor 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 with the screen. I then took some measurements: Measuring Data My first sine graph
Other Graphs 1.) Increased the volts:
2.) Decreased volts (lowest voltage on the F.G.):
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.
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. I measured the fall and rise times by using the measure button, an equation on Wikipedia, and with the cursor button:
I only measured the rise time by the measure button:
Notes for myself
My first sine graph
Other Graphs 1.) So in order to increase Amp. I increase the volts, and the data came out to be so:
2.) Low amp. I decrease volts. 'lowest voltage on the func. gen.
Triggering So the question is: 'Common way to trigger is on a rising edge (what does this mean?). What happens to the signal when you use different triggers? Be able to explain this orally.' So what I'm getting this is, based off of wiki and Mr. Young, that the trigger function is used to measure data on the table more precise. Starting at a starting point and to an ending point, such as at t=0 to t=10. Triggering enables the user to move along back and forth in those times of the wave. There are different functions for triggering such as pulse/video/edge. Edge does what is said above. As for video it sets the wave in motion depending on if it is "rising" or "falling." Pulse is more of an unknown thing for me.... AC Coupling Thinking... So the instructions say to apply a large DC voltage I have about 12V. And I've decreased the frequency substantially down to about (X1 2.0 Hz)whatever that means? The comparison is that the DC keeps a max voltage most of the time, but for AC that's not the case. Once it hit's max voltage, it exponentiates downward to V=0. The answer to avoid ripples is edge mode, i guess. Okay, so the increase in the DC voltage increases the amplitude, just as the Amplitude does. Fall time: 54.5 ms Fall time cal.: 45.1 ms Fall time w/ cursor: 49.6 ms Rise time: 32.5 micro sec. The difference in the cal. time to the cursor is that it's a little lower.
|