User:Cristhian Carrillo/Notebook/Physics 307L/
Oscilloscope LabSJK 10:58, 29 September 2010 (EDT)
- The purpose of this lab is to learn how to use an oscilloscope and a function generator.
- Function Generator
- BNC Cable
Setting UpSJK 10:36, 29 September 2010 (EDT)
I got an oscilloscope called Tektronix TDS 1002 and a function generator called wavetek. I got a BNC cable to connect the generators output to channel one of the ocilloscope. The output that I used for the wavetek generator is called 2vp-p. I then adjusted the frequency to 200Hz in the generator.
Measuring the Sine WaveSJK 10:38, 29 September 2010 (EDT)
1) Counting Grid Lines
peak-peak voltage=6.01V, frequency=203.7Hz
2) Using Cursors
peak-peak voltage=6.00V, frequency=204.1Hz
3) Using Measure
peak-peak voltage=6.08V, frequency=203.7Hz
- Counting grid lines to measure the voltages and frequencies was not too difficult but it was not very accurate for me. The cursors were easier to get better values. When I finally used the measure option I found that the actual values were close to the values I measured using the cursors.
I learned from Zane's lab book that "Triggering on a rising edge means that the graph stops according to when the graph reaches a rising voltage."
Fall time=122.0ms with cursors, and 117.8 with measureI had a hard time with understanding what AC coupling was and I had Katie help me with understanding what the difference is between AC and DC coupling. Unfortunately, I did not have enough time to get an accurate measurement of the fall time. Therefore, I do not believe that my tao constant will be correct SJK 10:54, 29 September 2010 (EDT)
The RC constant R*C=tao which was supposed to be equal to the falltime. I did not have enough time to get really comfortable with the AC coupling, therefore I did not get a very good value of the fall time. See the value above.