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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