Help and Documentation


Getting started with DoCircuits


How to use the function generator

Sign up to experience this function generator and advanced function generators (Tektronix AWG 3000 series ) in DoCircuits.




What is a function generator?

Function Generator is a device that is used to generate wide range of AC signals. A function generator is also known as “signal generator” or “waveform generator”. A function generator generates a variety of periodic and single shot waveforms of different periods and amplitudes. The function selector buttons allow you to select the type of waveform you want. The property selector buttons allow you to edit the various properties of the wave like amplitude, frequency etc. you can start editing by clicking on the display and typing from the keyboard directly also.



General function generators can be used to generate the following waveforms:

    • Sinusoidal
    • Square
    • Pulse
    • Triangular

Drag the function generator  from the component panel. Connect it in your circuit and double click on it to open the panel as shown.

Part Description:

 

1.      Power On/Off

2.      Waveform Selector Buttons

Clickon any of these to select desired waveform such as sine, square, pulse, AM, PM and FM

3.      Waveform Property Selector Buttons

Clickto select various properties such as frequency, amplitude associated with theselected waveform for editing

4.      Arrow keys

Click to change the cursor position while editing the values

5.      Knob

Click and rotate clockwise or anti-clockwise to change the numeric and the units

6.      Display

Shows the current value of the selected property

7.      Number pad

This is used to set the values for the selected property

8.      Quick help button

This gives a brief explanation of all the features on the function generator

9.      Close button

 

How to set the values on the function generator

·        Double click on the function generator to open the function generator panel

·        Select the waveform of your choice by clicking on the waveform selector buttons

·        Select the property associated with the waveform such as frequency, amplitude or offset etc. by clicking on the waveform property selector button

·        Use the arrow keys to move the cursor to the desired position

·        Use the number pad to change the value or alternatively you can use the knob

·        After changing one property, move on to the next property

Note:

After changing properties of a waveform (e.g. frequency, amplitude of Sine), if you wish to select other waveform (e.g. Square), will set all the properties of Sine to their default values.

 Generating Sine wave:

·        Click the  sine button.

·        Click and select frequency, change it to the desired value

·        Similarly, change amplitude, offset and phase

Generating Square wave:

·        Click the  square button.

·        Click and select frequency, change the value to the desired value

·        Similarly, change amplitude, duty cycle and phase

Generating a pulse train:

·        Click the  pulse button

·        Click and select amplitude, change the value to the desired value

·        Similarly, change other parameters as well.

 Generating AM:

·        Click the  AM button

·        Select Carrier frequency, change the value suitably

·        Similarly, change other parameters as well.

Note: Giving appropriate values to the parameters isessential to get proper AM signal. Go ahead and check out our detailed help.

Generating PM:

·        Click the  PM button

·        Select Carrier frequency, change the value suitably

·        Similarly, change other parameters as well.

Note: Giving appropriate values to the parameters is essential to get proper PM signal. Go ahead and check out our detailed help.

Generating FM:

·        Click the  FM button

·        Select Carrier frequency, change the value suitably

·        Similarly, change other parameters as well.

Note: Giving appropriate values to the parameters is essential to get proper FM signal. Go ahead and check out our detailed help.