Function & Arbitrary Waveform Generators

Function generators produce standard periodic waveforms — sine, square, triangle, ramp, and pulse — at user-defined frequencies and amplitudes, while arbitrary waveform generators (AWGs) extend this capability to output virtually any digitally defined waveform stored in memory. Together, these instruments serve as versatile signal sources for circuit development, sensor simulation, component characterization, and production testing across the electronics industry.

Modern function/AWG instruments combine both capabilities in a single unit, offering direct digital synthesis (DDS) for precise frequency control, modulation modes (AM, FM, PM, FSK), sweep functions, and high sampling rates for reproducing complex real-world signal profiles. They are essential tools in electronics R&D, education, and automated test systems where repeatable, programmable excitation signals are required.

Typical Applications

Circuit development: stimulating amplifiers, filters, and ADC designs with controlled waveforms during lab debug
Sensor and transducer simulation: generating calibrated output signals from accelerometers, charge amplifiers, and signal conditioners
Production test: providing stimulus waveforms in automated test equipment for electronics manufacturing
Broadcast signal monitoring: verifying video and broadcast signal integrity with dedicated waveform monitors
Education and training: teaching signal theory and circuit behavior with programmable waveform sources in academic labs

Popular Brands

Tektronix offers dedicated waveform monitors for broadcast applications alongside general-purpose function generators. Fluke produces reliable waveform generators targeting calibration and industrial measurement applications. Endevco (now Meggitt) specializes in signal conditioning accessories including charge amplifiers and shock amplifiers used with piezoelectric sensors. RIGOL and Keysight offer full-featured arbitrary waveform generators across a wide frequency and budget range.