Use the following data to answer the two question below: 1. You used an oscillos

Question

Use the following data to answer the two question below:

1. You used an oscilloscope and function generator to produce the data. If you change the VOLTS/DIV setting on the oscilloscope are you changing the signal from the function generator or are you just changing how it is displaed? Use your data to justify your answer

2.  You used an oscilloscope and function generator to produce the data. If you change the TIME/DIV setting on the oscilloscope are you changing the signal from the function generator or are you just changing how it is displaed? Use your data to justify your answer

Frequency Vpp IV) The pr. Horz div Time/Div Exp. Error Period (Hz) Div (ms/div) Period 400 1 48 02 1 400 500 03 2.4 01 02 0.0800 4.1 12500 Table 1. Experimental Data to find Percent Error between Theoretical and Experimental Period Frequency pp 12500 1.4 Table 2. Experimental Data to find Experimental Volt. Use the data from these tables to justify answers... Thank you.

Explanation / Answer

1 )  If you change the VOLTS/DIV setting on the oscilloscope you are only changing how it is displayed.

from the table 2

2 and 3 readings have the same signal of 4000 hz and 5 Vpp as the inputs from the signal generator

but the main difference we have is the VOLTS/DIV settings .

in second reading it is 1 VOLTS/DIV

so each division it represents 1 volt we have a total of 5 Vpp so we need 5 divisions which we can see from column 3.

in third reading has 2 VOLT/DIV

so each division represents 2 volts for 5 Vpp we need roughly 2.5 divisions but because of the error 0f 0.1 div we get is as 2.6 div from column 3

so the number of divisions it is taking to represent on the oscilloscope is affected by VOLT/DIV setting but not the signal from function generator

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b) similarly from table 1 second and third readings we can say the same for TIME/DIV setting

both second and third reading has 4000 hz ie., a time period of 1/4000 = 0.25 ms

if we take a setting of 0.05 ms/div as in second reading we need 5 divisions but because of error it is given as 4.8 divisions in column 4

similarly if we take 0.1 ms/div as in third reading to represent 0.25 ms we need 2.5 divisions and because of error it is given as 2.4 in column 4

so even here just b changing TIME/DIV setting the signal from the function generator is not changed but only the way it displayed.

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