User:Joseph Frye/Notebook/Physics Junior Lab 307L/Oscilloscope

Oscilloscope Lab
I did this lab on Mondays August 23 and 30 2010 with Alex Benedict at UNM. We were following this assignment from Dr. Koch: Physics307L:Labs/Oscilloscope

Links
My lab summary

Alex Benedict's lab summary

Alex Benedict's notebook from this lab

Equipment
Tektronic TDS 1002 oscilloscope BK Precision 4017A 10 MHz function generator

Set up
We put the oscilloscope on top of the function generator and connected them using BNC cables

Measurements
We measured the peak-to-peak voltage as well as the period of some different sine waves. We did this using 3 different methods. We first measured using the grid on the oscilloscope screen. We measured using the cursors on the oscilloscope. We also measured using the "measure" function on the oscilloscope. Our data is below and these measurements are on 'sheet1'.

We also measured the fall time of a square wave with a DC offset and AC coupling on. This set up causes the voltage to droop. The fall time is how long it takes the voltage to fall to 90% of its total drop. We measured this using the cursors as well as the "measure" function on the oscilloscope. This data is on 'sheet2'

Model numbers for our equipment and additional note are in the 'Notes' tab

Observations
The oscilloscope could not measure low frequencies very well. For frequencies of about 10Hz or lower the scope displayed the frequency as "?10Hz". On the back of the oscilloscope we found that it is rated for "45-440Hz for 100-120V" and "44-66Hz for 120-240V". This was consistent wit hour finding because we found that the oscilloscope also could not measure when we had a large DC offset of about 150V

We also had time to use the x-y function on the oscilloscope. We hooked up a second function generator to channel 2 on the oscilloscope and were able to make some interesting patterns by varying the functions on the different channels.