A function generator is a type of signal generator people use to generate many kinds of electrical waveforms over a range of frequencies. A function generator is a type of electronic test equipment that produces sine, triangular, square, and sawtooth shape waveforms. The user can make these waveforms single-shot, using a trigger source, or repetitive, based on use. This kind of signal generator uses integrated circuits to create waveforms. Function generators cover both RF and audio frequencies.
Use function generators to test equipment, make repairs, and maintain electronic components. Typically, people use function generators with analog circuits. For work with digital circuits, use pulse generators instead.