Function generators connect to an oscilloscope to test the frequency of electrical equipment. They introduce a varied frequency and measure the response of the equipment under test. Applications include in-circuit signal injection, R&D, and electronic equipment testing and repair.

These function/arbitrary waveform generators play a variety of waveforms or patterns to illustrate, test, and monitor the fluctuating behaviors of AC voltage levels. Arbitrary waveform generators allow preset waveforms to be customized by the user. The user can adjust characteristics of these preset waveforms like speed, offset, and amplitude. They can also apply distortion to the waveform. Applications include optical modulation and stress testing wireless networks.

Programmable pulse generators connect to an oscilloscope. They generate a repeated pulse with the same time interval to illustrate, test, and monitor the response of the electronic equipment under test. These generators are used to test and develop digital circuits.

Sweep function generators connect to an oscilloscope to test the frequency of electrical equipment like electronic filter circuits and amplifiers. These function generators introduce a varying frequency and a steady amplitude in one cycle, or sweep, and measure the response of the equipment under test.