LABORATORY: 2
EXERCISE EXERCISE SUBMISSION
№: 2 DATE: 09.04.2024 DATE: 07.05.2024
EXERCISE TOPIC: Function Generator
YEAR: GROUP: NAME AND SURNAME: GRADE:
1 Year L01 Dmytro Baranov INSTRUCTOR’S SIGNATURE:
Theoretical part
Function Generator:
A function generator is an electronic device used to generate various types of
electrical waveforms over a wide range of frequencies. The MATRIX MFG 2120F
function generator used in this experiment is based on direct digital synthesis
(DDS) technique and features an arbitrary waveform function.
Key Components of the MATRIX MFG 2120F function generator:
- OUTPUT: Main output interface with an impedance of 50 Ω.
- B-OUT: Auxiliary output socket with an impedance of 600 Ω.
- SYN: TTL output interface used for signal time recording with OUTPUT.
Front Panel Controls:
- Mode: Allows selection of various modulation functions.
- Config: Used for modulation of certain functions such as output B, frequency
counter, or power output.
- Trig: Enables single and external triggering in several modulation modes.
- Enter: Confirms the value entered using the regulators.
- Esc: Cancels input or action.
- Wave: Selects the waveform of the function.
- Freq: Sets the frequency of the output signal.
- Amp: Sets the peak-to-peak amplitude value.
- Duty: Sets the duty cycle percentage of the output signal.
- Offset: Sets the offset relative to the 0V level, given as a percentage of the
waveform.
Oscilloscope:
An oscilloscope is a vital tool for any electronics laboratory, used to observe
and measure electronic signals. The RIGOL DS1104B oscilloscope used in this
experiment is equipped with various features facilitating accurate signal
observation and measurement.
Key Features of the RIGOL DS1104B oscilloscope:
- LCD Display: Displays the waveform and relevant measurement parameters.
- Control Buttons: Allow the user to navigate through different settings and
menus.
- Time Base and Voltage Scale Adjustment: Enables adjustment of time and
voltage scales for precise signal observation.
- Trigger Settings: Allow the user to set trigger conditions for signal acquisition.
- Channel Settings: Enable adjustment of channel parameters such as voltage
and coupling.
- Measurement Functions: Facilitate automatic measurement of various signal
parameters.
- Math and Reference Functions: Allow mathematical operations and reference
signal comparison.
Measurement System:
The measurement system for this experiment consists of the MATRIX MFG
2120F function generator and the RIGOL DS1104B oscilloscope. The function
generator generates the electrical signals, and the oscilloscope is used to
observe and measure these signals accurately.
During the experiment, the function generator is connected to the oscilloscope
using a BNC cable. The oscilloscope is then turned on and configured for
optimal performance. Various parameters such as waveform shape, frequency,
amplitude, and duty cycle are set on the function generator, and the resulting
signals are observed and measured using the oscilloscope.
This setup allows to familiarize themselves with the operation of a function
generator and an oscilloscope, as well as perform measurements and
calculations using the oscilloscope.
Definitions:
1. Frequency: frequency refers to the number of occurrences of a repeating
event per unit of time. It is typically measured in Hertz (Hz), where one
Hertz equals one cycle per second.
2. Voltage: Voltage, often denoted as V, is the electric potential difference
between two points in an electric circuit. It represents the work done per
unit charge to move a positive test charge between the points.
3. Electric Current: Electric current is the flow of electric charge through a
medium, typically a conductor such as a wire. It is measured in Amperes (A)
and represents the rate of flow of electric charge past a point in a circuit.
Practical part
Sawtooth 5kHz. 1,5V
Measurement Average Standard Measurement Average Standard
deviation deviation
1-2 200us 1-3 400us
2-3 200us 2-4 400us 400us 0
3-4 200us 200us 0 3-5 400us
4-5 200us 4-6 400us
5-6 200us
Sum 1 ms 1-6 1-6
200+200+200+200+ 200
1) μ= =200 us
5
σ=
√
(200−200)2 +(200−200)2 +(200−200)2 +(200−200)2 +(200−200)2
5
=0
400+ 400+400+ 400
2) μ= =400 u s
4
σ=
√
(400−400)2 +(400−400)2 +(400−400)2+(400−400)2
4
=0
Square 15kHz. 3 V. Duty 25%
Measurement Average Standard Measurement Average Standard
deviation deviation
1-2 67,2us 1-2 134,4us 134,4us 0
2-3 67,2us 67,2us 0 2-4 134,4us
3-4 67,2us
Sum 201,6us 1-4 1-4
67 , 2+ 67 , 2+ 67 , 2
1) μ= =67 ,2 us
3
σ=
√
(67 , 2−67 ,2)2+(67 ,2−67 , 2)2 +( 67 ,2−67 , 2)2
3
=0
134 , 4 +134 , 4
2) μ= =134 , 4 u s
2
σ=
√
(134 , 4−134 , 4)2 +(134 , 4−134 , 4 )2
2
=¿ 0
Descriptive Presentation of the
Work at the Function Generator
In conclusion, the descriptive presentation of the work at the
function generator, coupled with the operation of the oscilloscope,
has provided a comprehensive understanding of these essential
laboratory instruments. Throughout this exercise, I have not only
become familiar with the MATRIX MFG 2120F function generator and
the RIGOL DS1104B oscilloscope but have also gained practical
experience in performing measurements and calculations.
The exercise began with a detailed description of the measurement
system, highlighting the capabilities of the function generator, which
employs direct digital synthesis (DDS) technique and offers arbitrary
waveform generation with up to 11 runs. The oscilloscope, on the
other hand, serves to display the generated signals accurately.
I was guided through the process, starting with the basic steps of
connecting the function generator to the oscilloscope. They then
familiarized themselves with the function generator's interface,
learning to program different waveforms, frequencies, amplitudes,
and duty cycles.
By following the provided instructions and conducting the prescribed
exercises, I gained practical insights into the operation of these
instruments. This experience is invaluable, as it not only enhances
theoretical knowledge but also equips with the skills necessary for
future experiments and projects in fields such as electronics,
engineering and physics. Overall, this exercise has proven to be an
essential part of the learning process, providing a solid foundation for
further exploration and experimentation in the realm of signal
generation and analysis.
Screenshots
