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What are Function Generators?

A function generator is a test equipment that is able to generate signals in the form of waveforms. They are able to produce sine waves, square waves or pulses, and triangle or saw tooth waves. Function generators can usually output signal frequencies of up to 100 kHz, with more expensive ones being capable of reaching up to 20 to 30 MHz [1].

Types

Bench Top

Types

Bench Top

Bench top function generators are the most common form of function generators. 

USB

Rack

. It is a self contained unit comprised of a display, controls, output, and a power supply to power it [1].

USB

USB function generators are USB devices are very similar to bench top function generators. The only difference is that instead of using a dedicated a power supply and control module, the USB function generator uses the computer for power and control [1]. This results in a smaller form factor.

Rack

Computer / Software

Computer or software based function generators uses a computer's sound card to output a waveform. This method of function generation may not have the output capabilities or accuracy of specially designed function generators [1]. Other electrical components can be used to modify the output, such as an amplifier to increase the signal's voltage.

Bench Top Function Generator [1]	USB Function Generator [2]	Rack Based Function Generator	PXI Rack System [3]	Example of a Computer Function Generator Setup [4]
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Additional Features

Applications

References