Lab 2 (1)
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California State University, Sacramento *
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117L
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Electrical Engineering
Date
Dec 6, 2023
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7
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Lab 2: Oscilloscope and Function Generator
EEE 117L
09/06/2023
Instructor: Jim Quilici
Title:
Oscilloscope and Function Generator
Lab results:
Part 1:
DMM measurement 0.177 mV
This is the calculation for R1 because I had a different
capacitor
Part2:
Table 1:
Parameter
Calculated
Measured
% difference
Frequency
1 kHz
1.02 HZ
0.02%
Period
1 ms
1 ms
0%
Output
Amplitude at
Fc (when Vin
=1V Peak)
0.707 V
0.720 V
1.83%
Output Delay
125 µs
123 µs
1.6%
Output Phase
Shift
45°
44.28°
1.6%
Table 2:
Changing the frequency from 100 Hz to 10k Hz and finding
the max table
Frequency (Hz)
Max (1) (V)
Max (2) (V)
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100
1.15
1.11
10k
1.05
0.140
Phase = (123 µs/1 ms)*360 = 44.28°
Sine wave:
Square wave:
Triangle/Ramp wave:
Part 3:
The Offset +1 and DC wave:
Discussion Q&A:
1. What is the difference between voltage measurements made with the
DMM and the oscilloscope?
The oscilloscope has a 50Ω resistor inside of the plug so the measured value of
the DMM would be lower.
2. Show the input/output signals found in Part 2. Are they about 45° apart?
Show your phase Calculation
The phase calculation is shown below table 2. It was close to 45°, the measured
was 44.28°.
3. At what frequency does the output signal amplitude begin to exhibit
attenuation
Around the frequency 1.114k Hz is when the output signal amplitude begins to
exhibit attenuation.
4. Between 0.1x Fc(100Hz) and 10xFc (10kHz), what is the attenuation
difference, in units of dB?
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When it was just 100 Hz, it was only about 0.04 dB, but when it was 10k Hz,
there was a difference as you can see in table 2.
5. What happened when the triggering level was changed from + to -?
It should have made the waves back to the middle, so it would be like AC without
the offset.
6. What happened when the coupling was changed from AC to DC in part
3? Explain the difference between DC coupling and AC coupling on the
vertical channel.
From AC to DC it was a huge difference, when putting the offset to +1, it didn’t
change much when it was in AC. But when changing AC to DC (you can see on
the image above), everything shifted upwards. DC coupling allows you to see all
signals from 0 Hz up to the max bandwidth of your scope. AC coupling filters out
DC components.
Related Questions
Identify which measurement this oscilloscope time difference reading is useful for.
Oscilloscope-XSC1
Time
250.000 us
1.261 ms
Channel_A
169.064 V
168.513 V
-550. 584 mV
Channel_B
89. 282 V
95.005 V
5.722 V
Reverse
T2-T1
1.011 ms
Save
Ext. trigger
Timebase
Scale: 200 us/Div : Scale: 100 V/Div
X pos. (Div): 0
Channel A
Channel B
Scale: 100 V/Div
Y pos. (Div): 0
Trigger
Edge: F
Level: 0
A B Ext
Y pos. (Div): 0
V
Y/T Add B/A
A/B
AC
DC
AC
DC
Single Normal
O period
O none of the above
O phase shift
arrow_forward
If the charging resistor was twice as large as the discharging resistor in Figure 4, theamplitudes of the charging and discharging waveforms would be ________.a. The sameb. Different
arrow_forward
Explain why voltage spikes and surges are high frequency occurences
arrow_forward
Suppose you are asked to generate the waveforms as shown in figure 1, continuous over time,
using the 555 timer. Assume that period of all the waveforms are 4ms. Draw the clear circuit
diagram required for the generation of each of these waveforms and calculate the values of
resistors and capacitors to be used.
arrow_forward
Number 20
arrow_forward
The main purpose of an oscilloscope is to graph an electrical signal as it varies over time. Most scopes
produce a two-dimensional graph with time on the x-axis and voltage on the y-axis. The voltage waveform
on the screen looks as shown in the figure below. Here, the vertical resolution of the oscilloscope is set
up to be 2 mV/division and the horizontal resolution is 2 ms/division.
Time
1. Determine the peak-to-peak amplitude of the wave.
Voltage
arrow_forward
Q1
Explain the following terms:
(a) Sensor
(1.5 marks)
(b)
Transducer
(1.5 marks)
(c)
Instrument
Q2
Q3
(2 marks)
Based on Figure Q2, if the RTD sensor measurement is 57°C answer the following.
(a) Calculate the output current from RTD sensor if the output range is 4
20mA.
(2 marks)
(b) Calculate the output voltage from the temperature controller if the output
range is 0-10VDC.
(2 marks)
(c) Propose a type of sensor if the process temperature is increased to 1000°C.
(1 marks)
A capacitive displacement transducer is designed to determine the rotary position.
from 0° 180° as shown in Figure Q3. The moving plate whose radius is 40mm is
sandwiched between two fixed plates, spacing at Imm. The dielectric constant of
air is k 1.The capacitive transducer is formulated as:
where;
(a)
kA€。
farads
k = dielectric constant
A
the area of the plate, in square meters
€₁ = 8.854 × 10-12 in farads per meter
d = the plate spacing in meters
Construct an equation of the change of the capacitance (F) when…
arrow_forward
An LM317 is connected between two decoupling capacitors. There is a 220ohm resistor between
the output pin and the adjust pin. Note the voltage drop between the output and adjust pins is
1.25V. Find the resistor needed between the Adjust pin and ground to ensure 5 V is dropped across
the load.
Enter your answer in ohms:
_ohms
arrow_forward
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Related Questions
- Identify which measurement this oscilloscope time difference reading is useful for. Oscilloscope-XSC1 Time 250.000 us 1.261 ms Channel_A 169.064 V 168.513 V -550. 584 mV Channel_B 89. 282 V 95.005 V 5.722 V Reverse T2-T1 1.011 ms Save Ext. trigger Timebase Scale: 200 us/Div : Scale: 100 V/Div X pos. (Div): 0 Channel A Channel B Scale: 100 V/Div Y pos. (Div): 0 Trigger Edge: F Level: 0 A B Ext Y pos. (Div): 0 V Y/T Add B/A A/B AC DC AC DC Single Normal O period O none of the above O phase shiftarrow_forwardIf the charging resistor was twice as large as the discharging resistor in Figure 4, theamplitudes of the charging and discharging waveforms would be ________.a. The sameb. Differentarrow_forwardExplain why voltage spikes and surges are high frequency occurencesarrow_forward
- Suppose you are asked to generate the waveforms as shown in figure 1, continuous over time, using the 555 timer. Assume that period of all the waveforms are 4ms. Draw the clear circuit diagram required for the generation of each of these waveforms and calculate the values of resistors and capacitors to be used.arrow_forwardNumber 20arrow_forwardThe main purpose of an oscilloscope is to graph an electrical signal as it varies over time. Most scopes produce a two-dimensional graph with time on the x-axis and voltage on the y-axis. The voltage waveform on the screen looks as shown in the figure below. Here, the vertical resolution of the oscilloscope is set up to be 2 mV/division and the horizontal resolution is 2 ms/division. Time 1. Determine the peak-to-peak amplitude of the wave. Voltagearrow_forward
- Q1 Explain the following terms: (a) Sensor (1.5 marks) (b) Transducer (1.5 marks) (c) Instrument Q2 Q3 (2 marks) Based on Figure Q2, if the RTD sensor measurement is 57°C answer the following. (a) Calculate the output current from RTD sensor if the output range is 4 20mA. (2 marks) (b) Calculate the output voltage from the temperature controller if the output range is 0-10VDC. (2 marks) (c) Propose a type of sensor if the process temperature is increased to 1000°C. (1 marks) A capacitive displacement transducer is designed to determine the rotary position. from 0° 180° as shown in Figure Q3. The moving plate whose radius is 40mm is sandwiched between two fixed plates, spacing at Imm. The dielectric constant of air is k 1.The capacitive transducer is formulated as: where; (a) kA€。 farads k = dielectric constant A the area of the plate, in square meters €₁ = 8.854 × 10-12 in farads per meter d = the plate spacing in meters Construct an equation of the change of the capacitance (F) when…arrow_forwardAn LM317 is connected between two decoupling capacitors. There is a 220ohm resistor between the output pin and the adjust pin. Note the voltage drop between the output and adjust pins is 1.25V. Find the resistor needed between the Adjust pin and ground to ensure 5 V is dropped across the load. Enter your answer in ohms: _ohmsarrow_forward
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Recommended textbooks for you
- Delmar's Standard Textbook Of ElectricityElectrical EngineeringISBN:9781337900348Author:Stephen L. HermanPublisher:Cengage LearningElectricity for Refrigeration, Heating, and Air C...Mechanical EngineeringISBN:9781337399128Author:Russell E. SmithPublisher:Cengage Learning

Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Cengage Learning

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