Merge pull request #2 from virtual-labs/dev

Dev

README.md

@@ -1,24 +1,27 @@
 ## Introduction
 
 
-<b>Discipline | <b>Fill your discipline name here
+<b>Discipline | <b>Electronics and Communication and Engineering
 :--|:--|
-<b> Lab | <b> Fill your lab name here
-<b> Experiment|     <b> Fill your experiment name and number here
+<b> Lab | <b>  Analog Electronics Circuits Virtual Laboratory
+<b> Experiment|     <b> Familiarisation with Oscilloscope and Function Generator
 
 ### About the Experiment 
 
 Fill a brief description of this experiment here
 
-<b>Name of Developer | <b> Fill the name of experiment owner here 
+### Subject Matter Expert
+<b>Name | <b> **Prof. Chittaranjan Mandal**
 :--|:--|
-<b> Institute | <b>  
-<b> Email id|     <b>  
-<b> Department |  
+<b> Institute | <b>  **Indian Institute of Technology Kharagpur**
+<b> Email id|     <b>  **[email protected]**
+<b> Department |  **Department of Computer Science and Engineering**
+<b>Webpage| <b> [http://www.iitkgp.ac.in/department/CS/faculty/cs-chitta](http://www.iitkgp.ac.in/department/CS/faculty/cs-chitta)
+
 
 ### Contributors List
 
-SrNo | Name | Faculty or Student | Department| Institute | Email id
+SrNo | Name | Developer and Integration Engineer | Department| Institute | Email id
 :--|:--|:--|:--|:--|:--|
-1 | . | . | . | . | .
-2 | . | . | . | . | .
+1 | **Sukriti Dhang** | Developer | Department of Mechanical Engineering | IIT Kharagpur | [email protected] |
+2 | **Prakriti Dhang** | Integration | Department of Mechanical Engineering | IIT Kharagpur | [email protected] |

experiment-descriptor.json

@@ -0,0 +1,63 @@
+{
+  "unit-type": "lu",
+  "label": "",
+  "basedir": ".",
+  "LaTeXinMD": false,
+  "units": [
+    {
+      "unit-type": "aim"
+    },
+
+    {
+      "target": "theory.html",
+      "source": "theory.md",
+      "label": "Theory",
+      "unit-type": "task",
+      "content-type": "text"
+    },
+
+    {
+      "target": "pretest.html",
+      "source": "pretest.json",
+      "label": "Pretest",
+      "unit-type": "task",
+      "content-type": "assesment"
+    },
+    {
+      "target": "procedure.html",
+      "source": "procedure.md",
+      "label": "Procedure",
+      "unit-type": "task",
+      "content-type": "text"
+    },
+    {
+      "target": "oscitut.html",
+      "source": "oscitut.md",
+      "label": "Oscilloscope Tutorial",
+      "unit-type": "task",
+      "content-type": "text"
+    },
+    {
+      "target": "simulation.html",
+      "source": "simulation/index.html",
+      "label": "Simulation",
+      "unit-type": "task",
+      "content-type": "simulation"
+    },
+
+    {
+      "target": "posttest.html",
+      "source": "posttest.json",
+      "label": "Posttest",
+      "unit-type": "task",
+      "content-type": "assesment"
+    },
+    {
+      "target": "references.html",
+      "source": "references.md",
+      "label": "References",
+      "unit-type": "task",
+      "content-type": "text"
+    }
+  ]
+}

experiment/aim.md

@@ -1 +1,7 @@
-### Aim of the experiment
+## Aim of the experiment
+
+1. Familiarisation of Function Generator
+2. To undertand Oscilloscope using the Sine, Square, and Triangle waveforms.
+3. Checking the frequencies of the Sine, Square, and Triangle waves on the waveform generator
+4. This experiment will help the students to learn measuring voltages, time, frequency.
+5. This experiment will help the students to learn about lissajous figures

experiment/contributors.md

@@ -1,11 +1,15 @@
-EMPTY
-<!-- Remove all lines above this line before making changes to the file -->
-### Subject Matter Experts
-| SNo. | Name | Email | Institute | ID |
-| :---: | :---: | :---: | :---: | :---: |
-| 1 | name | email | institute | id |
+### Subject Matter Expert
+<b>Name | <b> **Prof. Chittaranjan Mandal**
+:--|:--|
+<b> Institute | <b>  **Indian Institute of Technology Kharagpur**
+<b> Email id|     <b>  **[email protected]**
+<b> Department |  **Department of Computer Science and Engineering**
+<b>Webpage| <b> [http://www.iitkgp.ac.in/department/CS/faculty/cs-chitta](http://www.iitkgp.ac.in/department/CS/faculty/cs-chitta)
 
-### Developers
-| SNo. | Name | Email | Institute | ID |
-| :---: | :---: | :---: | :---: | :---: |
-| 1 | name | email | institute | id |
+
+### Contributors List
+
+SrNo | Name | Developer and Integration Engineer | Department| Institute | Email id
+:--|:--|:--|:--|:--|:--|
+1 | **Sukriti Dhang** | Developer | Department of Mechanical Engineering | IIT Kharagpur | [email protected] |
+2 | **Prakriti Dhang** | Integration | Department of Mechanical Engineering | IIT Kharagpur | [email protected] |

experiment/experiment-name.md

@@ -1 +1 @@
-## Experiment name
+## Familiarisation with Oscilloscope and Function Generator

experiment/oscitut.md

@@ -0,0 +1,36 @@
+## Oscilloscope Tutorial
+
+An oscilloscope displays a voltage waveform versus time and has the following components:
+1. a screen to display a waveform,
+2. input jacks for connecting the signal to be displayed,
+3. dials to control how the signal will be displayed.
+
+
+The screen is cathode ray tube found in most television sets where the face of the screen is divided up into a 2 dimensional grid (or axes or scale); In this experiment we consider 8x10 grid. The vertical grid is divided up into 8 (major) divisions and the horizontal grid is divided into 10 major divisions. To improve the precision, each of these divisions is further broken up into 5 minor divisions. The horizontal axis (X-axis) represents time and the vertical axis (Y-axis) represents voltage. The scope displays (also called a signal trace or trace) the input signal voltage along the vertical (or Y-axis) while an internally generated signal (called the horizontal sweep or sweep signal) is simultaneously produced along the X-axis creating a 2- dimensional time trace of the input signal.
+
+<div align="center">
+<img src="images/oscilloscope.png" width="50%">
+<p>Figure 1</p>
+</div>
+
+volts/div- This control lets you change how many volts are represented by each vertical increment of grid (vertical axis) on the screen. Basically, it allows you to zoom in and out along the y axis.
+
+time/div- This control lets you change how much time is represented by each horizontal increment of the grid overlay on the screen. It allows you to zoom in and out along the x axis.
+
+If volt/div is set to 1 volt which implies each mazor vertical division is 1 volt where as each minor vertical division is 0.2 volt. And time/div is set to 0.1 ms/div which implies each maor horiontal division is 0.1 ms. Voltage on the vertical scale is 1 volt/div multiply by (number of division). Time on the horizontalscale is 0.1 ms multiply by (number of division). In the figure 2, 1 volt/div and amplitude of the input signal is 1 volt. Here 0.1 ms/div, the frequency is 1 kHz and its period is 1 complete cycle in 1 ms.
+
+
+<div align="center">
+<img src="images/oscilloscope_1vd.png" width="50%">
+<p>Figure 2</p>
+</div>
+
+
+In the figure 3, if volt/div is set to 2 volt/div, which implies each mazor division is 2 volt where as each minor division is 0.5 volt.
+
+<div align="center">
+<img src="images/oscilloscope_2vd.png" width="50%">
+<p>Figure 3</p>
+</div>
+
+Note: If you set the Volts/Div too low, you’ll clip the signal. Similarly, setting it too high, and you’ll won’t find the signal, i.e. the signal will b flat. ncreasing the Timebase will display more cycles of a periodic signal. Conversely, reducing the Timebase, fewer cycles will be displayed.

experiment/posttest.json

@@ -2,38 +2,64 @@
   "version": 2.0,
   "questions": [
     {
-      "question": "This is a Sample Question 1?",
+      "question": "Oscilloscope is __________",
       "answers": {
-        "a": "answer1",
-        "b": "answer2",
-        "c": "answer3",
-        "d": "answer4"
+        "a": "a ohmmeter",
+        "b": "an ammeter",
+        "c": "a voltmeter",
+        "d": "a multimeter"
       },
-      "explanations": {
-        "a": "Explanation 1  <a href='www.google.com'>here</a>",
-        "b": "Explanation 2",
-        "c": "Explanation 2",
-        "d": "Explanation 2"
+
+      "correctAnswer": "c",
+      "difficulty": "beginner"
+    },
+    {
+      "question": "One oscilloscope selector knob that allows the major and minor divisions of the graticule to be used to determine a signal amplitude value is called the",
+      "answers": {
+        "a": "Time/cm control",
+        "b": "Volts/cm control",
+        "c": " Intensity control",
+        "d": "Position control"
       },
-      "correctAnswer": "a",
+
+      "correctAnswer": "b",
       "difficulty": "beginner"
     },
     {
-      "question": "This is a Sample Question 2?",
+      "question": "A CRO can display",
       "answers": {
-        "a": "answer1",
-        "b": "answer2",
-        "c": "answer3",
-        "d": "answer4"
+        "a": "AC signals",
+        "b": "DC signals",
+        "c": "Both AC and DC signals",
+        "d": "Time-invariant Signals"
       },
-      "explanations": {
-        "a": "Explanation 1  <a href='www.google.com'>here</a>",
-        "b": "Explanation 2",
-        "c": "Explanation 2",
-        "d": "Explanation 2"
+
+      "correctAnswer": "c",
+      "difficulty": "beginner"
+    },
+    {
+      "question": "If the vertical sensitivity is set to 1 volt per division and occupies 2 divisions, then peak-to-peak voltage is",
+      "answers": {
+        "a": "4 volt",
+        "b": "5 volt",
+        "c": "2 volt",
+        "d": "20 volt"
       },
+
       "correctAnswer": "c",
       "difficulty": "beginner"
+    },
+    {
+      "question": "If the controls on the CRO are set at 0.2ms/div, find the frequency of the signal?<br/><p style=\"text-align:center\"><img src=\"image/postquiz3.png \" style=\"width:350px;height:200px\"></p>",
+      "answers": {
+        "a": "1 kHz",
+        "b": "2 kHz",
+        "c": "3 kHz",
+        "d": "4 kHz"
+      },
+
+      "correctAnswer": "b",
+      "difficulty": "beginner"
     }
   ]
 }

experiment/pretest.json

@@ -2,36 +2,62 @@
   "version": 2.0,
   "questions": [
     {
-      "question": "This is a Sample Question 1?",
+      "question": "CRO stands for_____________",
       "answers": {
-        "a": "answer1",
-        "b": "answer2",
-        "c": "answer3",
-        "d": "answer4"
+        "a": "Current Resistance Oscillator",
+        "b": "Capacitance Resistance Oscilloscope",
+        "c": "Central Resistance Oscillator",
+        "d": "Cathode Ray Oscilloscope"
       },
-      "explanations": {
-        "a": "Explanation 1  <a href='www.google.com'>here</a>",
-        "b": "Explanation 2",
-        "c": "Explanation 2",
-        "d": "Explanation 2"
+
+      "correctAnswer": "d",
+      "difficulty": "beginner"
+    },
+    {
+      "question": "A function generator is a multipurpose signal source, it can generate:",
+      "answers": {
+        "a": "Square Wave",
+        "b": "Triangle Wave",
+        "c": "Sine Wave",
+        "d": "All of above"
+      },
+
+      "correctAnswer": "d",
+      "difficulty": "beginner"
+    },
+    {
+      "question": "An advantage of Oscilloscope over multimeter is that",
+      "answers": {
+        "a": "We can measure accurate value of voltage",
+        "b": "We can see the wave shape of voltage",
+        "c": "We can measure accurate value of current",
+        "d": "We can measure accurate resistance"
       },
-      "correctAnswer": "a",
+
+      "correctAnswer": "b",
       "difficulty": "beginner"
     },
     {
-      "question": "This is a Sample Question 2?",
+      "question": "The graticule of an oscilloscope, which has a grid pattern graduated in",
       "answers": {
-        "a": "answer1",
-        "b": "answer2",
-        "c": "answer3",
-        "d": "answer4"
+        "a": "Square centimeters",
+        "b": "Millimeters",
+        "c": "Centimeters",
+        "d": "None of these"
       },
-      "explanations": {
-        "a": "Explanation 1  <a href='www.google.com'>here</a>",
-        "b": "Explanation 2",
-        "c": "Explanation 2",
-        "d": "Explanation 2"
+
+      "correctAnswer": "c",
+      "difficulty": "beginner"
+    },
+    {
+      "question": " If the vertical sensitivity is set to 0.5 volt per division and occupies 4 divisions, then peak-to-peak voltage is",
+      "answers": {
+        "a": "4 volt",
+        "b": "5 volt",
+        "c": "2 volt",
+        "d": "20 volt"
       },
+
       "correctAnswer": "c",
       "difficulty": "beginner"
     }

experiment/procedure.md

@@ -1 +1,35 @@
-### Procedure
+## Procedure
+
+1. Connect the components as mentioned below:
+L1-L5, L3-L6, L4-L7, L2-L7.(For eg. click on 1 and then drag to 5 and so on.)
+2. Click on 'Check Connection' button to check the connections.
+3. If connected wrong, click on the wrong connection. Else click on 'Delete all connection' button to erase all the connections.
+4. Connect L1-L5. This will connect the function generator 1 to channel 1 probe of oscilloscope.
+5. Connect L3-L6. This will connect the function generator 2 to channel 2 probe of oscilloscope.
+6. Connect L4-L7, L2-L7. This will connect the ground of function generator 1 and function generator 2 with oscilloscope.
+7. Click on 'ON' button to start the experiment.
+8. Double Click on 'Sine Wave' button to generate input waveform (2 Vp-p, 1kHz) from Function Generator 1.
+9. Double Click on 'Sine Wave' button to generate input waveform (2 Vp-p, 1kHz) from Function Generator 2.
+10. Vary the Amplitude, Frequency, volt/div using the controllers.
+11. Double Click on "Dual" button to observe both the waveform.
+12. Click on "X-Y" button to observe the specialized two-channel mode of oscilloscope. The XY time mode converts the oscilloscope from a volts-versus-time display to a volts-versus-volts display using two input channels. Channel 1 is the X-axis input, channel 2 is the Y-axis input.
+13. Channel 1 shows the waveform of Function Generator 1, Channel 2 shows the waveform of Function Generator 2.
+14. Repeat step 10-12 for 'Square Wave' and 'Triangular Wave'. Double Click on input button to generate input waveform (2 Vp-p, 1kHz) from Function Generator 1 and Function Generator 2.
+15. Note : Sometimes due to page load or cache, the graph may not come exact at one click. So it is better to double click on the channel-1 function/ channel-2 function/ dual function/ground function to get the respective signals.
+16. Oscilloscope and function generator is described more elaborately in the Oscilloscope Tutorial section.
+
+<div align="center">
+<img src="images/sine_dual_prc.png" width="50%">
+<p>Figure 1</p>
+</div>
+
+#### Note
+
+1. The input sine wave is 2 Vp-p, 1kHz
+2. As, volt/div is set to 1 volt/div. Which implies each mazor division is 1 volt where as each minor division is 0.2 volt.
+3. Click on Sine Wave from function generator 2.
+4. As, volt/div is set to 1 volt/div. Which implies each mazor division is 1 volt where as each minor division is 0.2 volt.
+5. Click on "Channel 1" or "Channel 2" button to observe input waveform.
+6. Double Click on "Dual" button to observe both the waveform
+7. The ground setting disconnects the input signal from the vertical system, which lets you see where zero volts is located on the screen. With grounded input coupling and auto trigger mode, you see a horizontal line on the screen that represents zero volts. Switching from DC to ground and back again is a handy way of measuring signal voltage levels with respect to ground.
+8. Click on "X-Y" button to observe the specialized two-channel mode of oscilloscope. (X-Y mode is a specialized two-channel mode of oscilloscopes when the signal of channel 1 is used for the deviation along the horizontal axis (X) and the signal of channel 2 – along the vertical axis (Y).)