1_230 Lab Manual Winter2016.pdf

# Close the welcome screen press no when asked to

• Lab Report
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Close the welcome screen. Press No when asked to enable automatic checking for software update. Wait for the program to complete its routine and to identify the oscilloscope. Double click on the oscilloscope image and wait for the application to be launched. Select the appropriate bench layout so that only a single, maximized bench application is shown. You can now control the oscilloscope entirely from your PC. If a button is pressed on the instrument, PC control pauses. By pressing Resume , control is regained. Select Screen Image from the top left.

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19 Frequency Cable v 1 (V) v 2 (V) Time delay, Δ T (ns) Phase diff., Δφ ( ) f 1 = 75 kHz 180” 12” f 2 = 75 MHz 180” 12” Analysis 1. (PreNLab) Compute the wavelength for frequencies f 1 and f 2 . Assume the relative permittivity ε r of the cable is 1.9. Tabulate the results . 2 . (PreNLab) Compute the ratio of ! to λ for the 12" BNC cable and the 180” BNC cable for frequencies f 1 and f 2 . Tabulate the results. 3 . If we were to ignore the cables in Fig. 1N2(c), then v out would be the same as v 2 measured by the scope . The output of the voltage divider is given by: !
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• Winter '08
• RAND
• BNC

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