Description

Fill the calculations tables 1 & 2 and Graph.Answer the questions 1,2,3,4,5, and 6.For more description on the picture attached below.

a) Answer ALL post-lab questions (1-6). V

b) Do Data Table 1 & Calculations Table 1 in conjunction with Calculations # 1 (graphing) on page 383 of

Version 3 of lab manual (procedure 11 of NEW lab manual). V

I. Plot data via Excel & print.

c)

Do Data Table 2 & Calculations Table 2 in conjunction with Calculations # 2 (graphing) on page 383 of

Version 3 of lab manual (procedure 12 of NEW lab manual). V

I. Plot data via Excel & print.

d) Make sure the graphs are formatted properly (Axes labels, title, units, trendline, equation, R? value, etc.) V

Make sure all grid sketches and blanks are filled out. V

38

LABORATORY 38 Oscilloscope Measurements

LABORATORY REPORT

1A. TIME/DIV-Ims

13. TIME/DIV= Ims

1A. VOLTS/DIV =

1

1B. VOLTS/DIV = av

1C. TIME/DIV = Ims

1C. VOLTS/DIV = SV

OV

OV

ov

Os

Os

Os

Ims

2A. TIME/DIV =

2A. VOLTS/DIV= lv

2B. TIME/DIV=_

Ims

2B. VOLTS/DIV=_lv

Ims

2C. TIME/DIV =

2C. VOLTS/DIV =

COOHC

11

200 HC

a

couc

Ka

1

OV

OV

OV

Os

Os

os

3A. TIME/DIV= 2ms

3A. VOLTS/DIV=

3B. TIME/DIV= 2ms

3B. VOLTS/DIV =

ZIN

OV

OV

Os

Os

COPYRIGHT © 2008 Thomson Brooks/Cole

2ms

388 Physics Laboratory Manual Loyd

Ims

2 ms

4A. TIME/DIV =

4B. TIME/DIV =

T

1

4A. VOLTS/DIV =

4B. VOLTS/DIV =

4C. TIME/DIV =

4C. VOLTS/DIV =

OV

OV

OV

Os

Os

Os

Data Table 1

Data Table 2

Voltmeter (V)

Voltmeter (V)

1.00

1.00

Oscilloscope (V)

1.45

2.8 9

4.4

5.70

Oscilloscope (V)

1.8

3.6

5.2

2.00

2.00

3.00

300 24

4.00 3.7

4.00

5.00

5.00

Calculations Table 1

Calculations Table 2

Intercept=

Intercept=

Slope =

Slope =

r=

TED

QUESTIONS

1. In the grid labeled 2A, how many complete cycles are sketched in your figure? From your sketch, what

is the period of the wave? Using this period, calculate the frequency of the wave for this sketch. Is it in

agreement with the frequency used for this part of the experiment?

2. In your own words, explain why these two sketches in 3A and 3B appear as they do. They

both have the trigger level zero, but one has a positive trigger slope and the other has a

negative trigger slope.

3. Explain the appearance of sketches 4A, 4B, and 4C. They all have a positive trigger slope, but

the trigger level of 4A is zero, the trigger level of 4B is positive, and the trigger level of 4C is

negative.

4. For a sine wave, an alternating current voltmeter measures a root-mean-square value that

is 0.707 of the peak value of the sine wave. Therefore, the peak value measured on the

oscilloscope should be 1/.707, or 1.414 times the voltmeter readings. The slope of the data

in Data Table 1 that you calculated and recorded in Calculations Table 1 should be

approximately 1.414. Calculate the percentage error between your slope for these data and

1.414.

5. For a triangular wave, an alternating current voltmeter measures a root-mean-square value

that is 0.576 of the peak value of the triangular wave. Therefore, the peak value measured

on the oscilloscope should be 18.576, or 1.736 times the voltmeter readings. The slope of

the data in Data Table 2 that you calculated and recorded in Calculations Table 2 should be

approximately 1.736. Calculate the percentage error between your slope for these data and

1.736.

6. AnoscilloscopeissetonaTIME/DIVsettingof50ms.Thereare 10divisionsonthetimescale.Asine

wave on the oscilloscope display has exactly three full cycles of the sine wave that fit on the

10 divisions. What is the frequency of the wave?

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