Chapitre 4 : Tension alternative et oscilloscope
Le coefficient de balayage s'exprime en seconde par division (s/Div). 1) Que représente un oscillogramme ? La tension en fonction du temps. 2) Que peux-tu dire
Basic Operation of an Oscilloscope The Screen
divisions plus 2 minor vertical division and at 3 major horizontal divisions plus 4 minor horizontal divisions would represent a 2.4 volts (or 1 volts/major
Topic 2 Electricity F
One vertical division on the oscilloscope screen represents 5 volts. Calculate the peak potential difference of the electricity supply. .............
TCP202 1 Ampere AC/DC Current Probe Reference
Set the oscilloscope vertical scale to 10 mA/division. b. Open and close the probe jaw Si votre oscilloscope n'affiche pas A/division V/division doit être.
Page 1 Oscilloscope Old Exam Questions
An oscilloscope is connected to an alternating current (a.c.) supply. The diagram shows the trace produced on the oscilloscope screen. Each horizontal division
Oscilloscope Basics Guide
In the case of the TBS1000 Series oscilloscope there are 10 divisions horizontally and 8 divisions vertically. A digital oscilloscope acquires a waveform
Exercice: exploitation dun oscillogramme: Loscilloscope est
L'oscilloscope est branché à un générateur on observe la courbe ci-dessous. La division vaut 20ms . Donc: T= 8x20 = 160ms = 0
XYZs of Oscilloscopes primer
between analog and digital oscilloscopes; your oscilloscope probably has Division.– Measurement markings on the oscilloscope graticule indicating ...
Virtual Oscilloscope Tutorial
In this experiment we consider 8x10 grid. The vertical grid is divided into 8 (major) divisions and the horizontal grid is divided into 10 major divisions.
Ecran
L'oscilloscope c'est un appareil de mesure (mesure de tension) qui permet de Chaque division est divisée en cinq sous divisions. Figure.1. Oscilloscope.
Basic Operation of an Oscilloscope The Screen
major vertical division plus 1 volts/major vertical division times 2/5 major divisions. [which is equal to 2 minor vertical divisions]) at a position of
Oscilloscope Fundamentals
Waveform Measurements with Digital Oscilloscopes 12. Types of Oscilloscopes . Division. Rise Time. Marks. Figure 38. An oscilloscope graticule.
Oscilloscope Basics Guide
divisions vertically. A digital oscilloscope acquires a waveform by conditioning the input signal in the analog vertical amplifier sampling the analog
Page 1 Oscilloscope Old Exam Questions
An oscilloscope is connected to an alternating current (a.c.) supply. The diagram shows the trace produced on the oscilloscope screen. Each horizontal division
Oscilloscope
2.00 V per division. Calculate the voltage of the displayed waveform: • Voltage peak-to-peak = NumberOfDivisions * VoltsPerDivision.
Virtual Oscilloscope Tutorial
Virtual Oscilloscope Tutorial. -Sukriti Dhang. VLT IITKgp. In this experiment we consider 8x10 grid. The vertical grid is divided into 8 (major) divisions.
Oscilloscopes
If the volts/div setting is 5 volts then each vertical division represents 5 volts and an entire screen of 8 divisions can display 40 volts from top to bottom.
Virtual Oscilloscope Tutorial
The horizontal axis (X-axis) represents time and the vertical axis (Y-axis) represents voltage. volt/div= 1volt. (which means each major division is 1 volt and
Vertical scale is 100mV per division. Waveform peak-to-peak is: 6
Waveform frequency is: 1/period = 1/250 s = 4kHz. Page 4. Oscilloscope View #4: The waveform is sliding sideways across the screen
The Oscilloscope: Operation and Applications
The deflection of the oscilloscope beam is proportional to the input voltage (after ac or dc coupling). The amount of deflection (Volts/Division) depends
[PDF] Chapitre 4 : Tension alternative et oscilloscope
Définition : Pour obtenir l'amplitude maximale de la tension on multiplie la déviation verticale Y (en nombre de divisions) par le calibre C (en V/Div : Volts/
[PDF] Loscilloscope
Un sélecteur avec différentes positions permet de régler la base de temps (secondes / divisions ou secondes / cm) Sur ce sélecteur il y a un autre un bouton (
[PDF] TP11/12 – OSCILLOSCOPE
Oscilloscope TP no11/12 (b) Les réglages de la vitesse de balayage par les commandes TIME/DIV et CAL (appelé encore VAR ou réglage fin continu)
[PDF] Fiches Oscilloscope - laboiteaphysique
Fiche Oscilloscope www laboiteaphysique Page 5 Couplage AC : Sensibilité : 2V/div La composante continue de 5V se trouve annulée Couplage AC :
[PDF] loscilloscope
= 50 ms / DIV = 0050s / DIV ( le point lumineux met 50 ms ou 005s pour traverser une division ) On règle la Sensibilité Verticale ( S V ) ou Amplification
[PDF] Mesure avec un oscilloscope : - Physique-Chimie
Toutefois ces deux tensions doivent être reliées à une masse commune de l'oscilloscope I Relever le calibre de la tension utilisé en Voie A ( YA ) ? 5 ms/div
[PDF] Utilisation de loscilloscope numérique - cpge paradise
Un oscilloscope est un appareil traçant des courbes sur un écran à partir par une division verticale au moyen du potentiomètre Horizontal (figure 2)ii
Chapitre 3 : Loscilloscope - PDF Téléchargement Gratuit
Coller doc Réglage de l'appareil Balayage : 5 ms / DIV Sensibilité verticale : 2 V / DIV Calculer la période T et la valeur maximale Umax de cette tension
[PDF] utilisation de loscilloscope - etude dune tension continue ( corrige)
Etudions une des fonctions de l'oscilloscope 1 a / Placer le générateur en position 6 V= ? Observer : En position 6 V le spot monte de 12 divisions
Qu'est ce que l'on appelle division sur un oscilloscope ?
Chaque carreau est appelé division. Ce sont des réglages préliminaires qui se font interrupteur ouvert. Permet de déplacer la trace verticalement pour la voie 2. Permet de régler la sensibilité verticale pour la voie 2.Quelles sont les parties d'un oscilloscope ?
Fonctionnement interne de l'oscilloscope
La trace de l'oscilloscope est déterminée par deux composantes : une horizontale et une verticale. La composante horizontale est en abscisse : c'est le temps, ou une tension (mode XY). La composante verticale est en ordonnée : c'est la tension appliquée par l'utilisateur.Quel est le type de la tension visualisée par l'oscilloscope ?
Sur l'oscilloscope, on visualise la tension de la pile au cours du temps. La tension ne varie pas au cours du temps, elle est continue.- L'oscilloscope (cathodique ou numérique) est un des appareils fondamentaux de l'électricité et de l'étude des signaux électriques. Il permet de visualiser soit deux tensions en fonction du temps (utilisation des voies YI et YII), soit d'étudier une tension en fonction d'une autre (utilisation XY ).
Schoelen, Rev C, Corrected Error in homework 1
Oscilloscope
Watch the following videos, remember you can watch videos on YouTube at 1.25x or 1.5x speed to save time. Click the Gear Button and select Speed Note: Hyperlinks are removed, you need to copy and paste the URL into your browser youtube.com/watch?v=ThrK2spjrLs youtube.com/watch?v=dTPHSDoWKU0 youtube.com/watch?v=zHEQEnG5GSw The following two videos are a little advanced, but I think you may still get something out of them. www.youtube.com/watch?v=eRA1Mx506fw www.youtube.com/watch?v=knvscPTVdv4Note͗ Our scopes in the lab don't haǀe the 10й 90й markings. We will determine that manually (similar to
how we did the voltages measurements in the first lab: counting boxes on the screen)Schoelen, Rev B 2
Oscilloscope Videos
Vertical Axis: Voltage
The vertical display of the Scope is divided into eight major divisions. The major divisions are subdivided into five minor division The voltage value of each division is determined by the Vertical Scale setting.The setting of the Vertical Scale is displayed in the lower left corner of the Scope display. The image shows that the scope is currently set to 2.00V per division for CH1 and CH2 (channel 1 and channel 2). The Vertical Scale can be set independently for each channel
Schoelen, Rev B 3
Vertical Axis: Voltage
Each of the waveforms displayed are approximately 2.5 divisions from lowest point on the waveform to the highest point of the waveform. The Vertical Scale is set to2.00 V per division. Calculate the voltage of the displayed waveform:
Voltage peak-to-peak = NumberOfDivisions* VoltsPerDivision Voltage peak-to-peak = 2.5 div * 2 V/div = 5 VppSo each of these waveforms are 5 Vppsignals
Schoelen, Rev B 4
Vertical Axis: Voltage
Another example, different scope.
The displayed sinewave is: ½ a division + four full division + ½ a division (approximately)That's a total of fiǀe diǀisions
Vertical Scale is: 1 V per division (as shown at the bottom lower left of the display) Voltage peak-to-peak = NumberOfDivisions* VoltsPerDivisionVoltage peak-to-peak = 5 div * 1V/div = 5 Vpp
This sinewave is also 5 Vpp
Schoelen, Rev B 5
The horizontal axis of the Scope is the Time Axis. The horizontal axis of the Scope is divided into ten major divisions Each major division is subdivided in to five minor divisions The time value of each division is determined by the Horizontal Scale setting.Schoelen, Rev B 6
Horizontal Axis: Time
The setting of the Horizontal Scale is displayed on the lower center of the Scope display. The image below shows that the scope is currently set to 500 us per horizontal division (500 x 10^-6). The Horizontal Scale is always the same for both channels.Schoelen, Rev B 7
Horizontal Axis: Time
Time Measurement on the Scope
The period of a signal can be measured with the Scope The waveform displayed below is approximately 2 divisions from one peak to an adjacent peak. The Horizontal Scale is set to 500us per division. Calculate the period of the waveform:Period (T) = NumberOfDivisions* TimePerDivision
Period (T) = 2 divisions * 500 us/division = 1000 us1000 us = 1 ms= 0.001s
Frequency = 1/T = 1/(0.001s) = 1000 Hz or 1 kHz
This sinewave has a frequency of 1 kHz
Schoelen, Rev B 8
Another example, different scope.
The waveform displayed is approximately 4 divisions from one peak to an adjacent peak. The Horizontal Scale is set to 25 msper division. Calculate the period of the waveform:Period (T) = NumberOfDivisions* TimePerDivision
Period (T) = 4 divisions * 25 ms/division = 100 ms100 ms= 0.1 s
Frequency = 1/T = 1/(0.1 s) = 10 Hz
This sinewave has a frequency of 10 Hz
Schoelen, Rev B 9
Time Measurement on the Scope
Another example
Note: please ignore the two vertical lines in the image The waveform displayed is approximately 4 divisions from one falling edge to the adjacent falling edge. The Horizontal Scale is set to 250 us per division. Calculate the period of the waveform:Period (T) = NumberOfDivisions* TimePerDivision
Period (T) = 4 divisions * 250 us/division = 1 ms
1 ms= 0.001 s
Frequency = 1/T = 1/(0.001s) = 1000 Hz
This square wave has a frequency of 1000 Hz or 1 kHzSchoelen, Rev B 10
Time Measurement on the Scope
It takes a finite amount of time for a pulse signal to transition from its minimum voltage to its maximum voltage.This time is called the rise-time of the signal
On the signal on the left it is difficult see the-rise time of the signal because we are zoomed out too far (500us / div) On the signal in the center it is difficult see the-rise time of the signal because we are still zoomed out too far (100us / div) On the signal on the right we can see the-rise time of the signal because we are zoomed in (2.5 us / div) We need to change the horizontal scale to smaller time scaleSchoelen, Rev B 11
Rise-Time Measurement on the Scope
Rise-Time of a Signal
The rise-time of a signal is defined as:
The time is takes for the signal to go from 10% Vppto 90% Vpp Example: if we have a pulse signal that has a Vppof 5V, the 10% and 90% points are:10% : 5 Vpp* 0.1 = 0.5 Vpp
90% : 5 Vpp* 0.9 = 4.5Vpp
90%rise time 5 Vpp 0 Vpp
10%0.5 Vpp
4.5 Vpp
Schoelen, Rev B 12
Rise-Time of a Signal
Example:
On the signal below the 10% and 90% of Vppare noted with vertical lines. The time between those two lines is the rise-time of the signal The scope is set to 100 ns per horizontal division There are approximately five division between the two lines rise-time = 5 divisions * 100ns/ division= 500nsSchoelen, Rev B 13
Exercise
What is the volts per division?
What is the time per division?
Which Channel is active?
Measure the peak-to-peak voltage (Vpp)
Measure the period (T)
Calculate the frequency f = 1/T
Answer
Note: div is abbreviation for full division
Volts per vertical division: 50 mV (50x10^-3)
What is the time per horizontal division: 100us (100x10^-6)Which Channel is active: Ch1 (lower left corner)
Vpp= (0.8div+4div+0.8div) x 50mv/div = 0.280 Vpp
Period (T)͗ T у 6.75 diǀ dž 100usͬdiǀ с 675 dž 10Δ-6 f = 1/T f = 1/ (675 x 10^-6) = 1.48 kHz (1480 Hz)Schoelen, Rev B 14
Exercise, Example
Exercise
What is the volts per division?
What is the time per division?
Which Channel is active?
Measure the peak-to-peak voltage (Vpp)
What is the 10%-90% Rise-time
Your Answer
Volts per vertical division: V/div = ______________________ What is the time per horizontal division:t /div= ______________________ Which Channel is active:CH = ________________________Vpp: Vpp=_______________________
Rise-time: Rtуͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺ
Schoelen, Rev B 15
Exercise 1
Exercise
What is the volts per division?
What is the time per division?
Which Channel is active?
Measure the peak-to-peak voltage (Vpp)
Measure the period (T)
Calculate the frequency f = 1/T
Your Answer
Volts per vertical division: V/div = ______________________ What is the time per horizontal division:t /div= ______________________ Which Channel is active:CH = ________________________Vpp: Vpp=_______________________
Period (T): T уͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺ
Frequency f = _________________________
Schoelen, Rev B 16
Exercise 2
Exercise
What is the volts per division?
What is the time per division?
Which Channel is active?
Measure the peak-to-peak voltage (Vpp)
Measure the period (T)
Calculate the frequency f = 1/T
Your Answer
Volts per vertical division: V/div = ______________________ What is the time per horizontal division:t /div= ______________________ Which Channel is active:CH = ________________________Vpp: Vpp=_______________________
Period (T): T уͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺ
Frequency f = _________________________
Schoelen, Rev B 17
Exercise 3
Exercise
What is the volts per division?
What is the time per division?
Which Channel is active?
Measure the peak-to-peak voltage (Vpp)
What is the 10%-90% Rise-time
Your Answer
Volts per vertical division: V/div = ______________________ What is the time per horizontal division:t /div= ______________________ Which Channel is active:CH = ________________________Vpp: Vpp=_______________________
Rise-time: Rtуͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺ
Schoelen, Rev B 18
Exercise 4
Exercise
What is the volts per division?
What is the time per division?
Which Channel is active?
Measure the peak-to-peak voltage (Vpp)
Measure the period (T)
Calculate the frequency f = 1/T
Your Answer
Volts per vertical division: V/div = ______________________ What is the time per horizontal division:t /div= ______________________ Which Channel is active:CH = ________________________Vpp: Vpp=_______________________
Period (T): T уͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺ
Frequency f = _________________________
Schoelen, Rev B 19
Exercise 5
Exercise
What is the volts per division?
What is the time per division?
Which Channel is active?
Measure the peak-to-peak voltage (Vpp)
Measure the period (T)
Calculate the frequency f = 1/T
Your Answer
Volts per vertical division: V/div = ______________________ What is the time per horizontal division:t /div= ______________________ Which Channel is active:CH = ________________________Vpp: Vpp=_______________________
Period (T): T уͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺ
Frequency f = _________________________
Schoelen, Rev B 20
Exercise 6
Exercise
What is the volts per division?
What is the time per division?
Which Channel is active?
Measure the peak-to-peak voltage (Vpp)
What is the 10%-90% Rise-time
Your Answer
Volts per vertical division: V/div = ______________________ What is the time per horizontal division:t /div= ______________________ Which Channel is active:CH = ________________________Vpp: Vpp=_______________________
Rise-time: Rtуͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺ
Schoelen, Rev B 21
Exercise 7
Note: ignore the vertical cursors on the image.
Exercise
What is the volts per division?
What is the time per division?
Which Channel is active?
Measure the peak-to-peak voltage (Vpp)
Measure the period (T)
Calculate the frequency f = 1/T
Your Answer
Volts per vertical division: V/div = ______________________ What is the time per horizontal division:t /div= ______________________ Which Channel is active:CH = ________________________Vpp: Vpp=_______________________
Period (T): T уͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺͺ
Frequency f = _________________________
Schoelen, Rev B 22
Exercise 8
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