EE462G: Electronic Circuits Laboratory


 

 

LabVIEW Program:
1. Input the frequency and amplitude values from the keyboard    
2. Input the amplitude value from the keyboard and the frequency values from a text file
3. Input the frequency value from the keyboard and the amplitude values from a text file

           Download LabVIEW Source Codes for Scope and Function Generator

 

 

 


4. Basic control of the curve tracer
5. Step generator of the curve tracer

         Download LabVIEW Source Codes for Curve Tracer

 

 


Exercise:
LabVIEW programming exercise I
LabVIEW programming exercise II
 


 

 


Input the frequency and amplitude values from the keyboard

Instruction:
1. Choose the wave type
2. Input frequency and amplitude values (e.g. 200 and 2)
3. Click 'Run' button to get the result.
4. When you use 'DC', you can input Offset value in 'Amplitude' box and you don't need frequency values.
5. The LED is OFF when you are collecting the data and it will turn on after you finish all the data
6. Click 'STOP' button to stop the program. If you want to restart the program, click the '->" button on the left-up of the window.
 

 

 

 

 

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Input the amplitude value from the keyboard and the frequency values from a text file

Instruction:
1. Choose the wave type
2. Input the amplitude value with keyboard
3. Click 'Input Freq. from file...' button and choose the text file that contains frequency values.
The format of the frequency file looks like:
     200
     800
    10000 ...
4. Click 'Run' button to get the result.
5. Click 'Save to File...' button to save the output values to a LVM fille. The LVM file can be opened with any text editor such as notepad.
6. The LED is OFF when you are collecting the data and it will turn on after you finish all the data
7. Click 'PAUSE' button when you want to stop the program when you are collecting the data
8. Click 'STOP' button to stop the program. If you want to restart the program, click the '->" button on the left-up of the window.
 

 

 

 

 

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Input the frequency value from the keyboard and the amplitude values from a text file

Instruction:
1. Choose the wave type
2. Input the frequency value with keyboard
3. Click 'Input Ampl from file...' button and choose the text file that contains frequency values.
The format of the amplitude file looks like:
     1.2
     2.0
     3.5 ...
4. Click 'Run' button to get the result.
5. Click 'Save to File...' button to save the output values to a LVM fille. The LVM file can be opened with any text editor such as notepad.
6. If you choose 'DC', input the start amplitude, the end amplitude and the increment from keyboard. The minimum value for increment is 0.05
7. The LED is OFF when you are collecting the data and it will turn on after you finish all the data
8. Click 'PAUSE' button when you want to stop the program when you are collecting the data
9. Click 'STOP' button to stop the program. If you want to restart the program, click the '->" button on the left-up of the window.
 

 

 

 

 

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Basic control of the curve tracer
 

 

 

 

 

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Step generator of the curve tracer

 

 

 

 

 

 

 

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LabVIEW programming exercise I

 

 


The purpose of this LabVIEW program is to input A and B values; subsequently, the program will calculate the multiplication of both inputs, i.e.,C=AxB and display the value of C in both edit box and gauge. When C>60, the LED will automatically turn on, otherwise, it remains off.

The program will guide the students to:
1. Create a new file.
2. Add controls on Front Panel. The controls  include numeric control, numeric indicator, gauge, LED and a stop button.
3. Program on Block Diagram. All the components will be wired up. In addition to a while loop, the 'multiply' and 'greater than' functions will be utilized.
4. Add text or comments on Front Panel.


 

 

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LabVIEW programming exercise II

 

 


The purpose of this LabVIEW exercise is for students to create a LabVIEW interface that controls the function generator to obtain the desired signals. GPIB commands will be used in this exercise.
 
The program will guide the students to:
1. Add controls on Front Panel. The controls include string control, OK and STOP button.
2. Program on Block Diagram. Use 'write' command which is from Advantech library. A case structure and a while loop will be utilized.
3. Generate Sine,Triangular and Rectangular signals. In addition, the interface will include features which allow variation in both frequency and amplitude.


 

 

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