Tektronix afg3022b arbitrary function generator tektronix afg2021 the tektronix afg3021c is a single channel arbitrary function generator that is unmatched in performance versatility intuitive operation and affordability this makes the afg3021c function arbitrary waveform and pulse generator one of the most useful instruments in the industrythe user can choose from 12 different standard waveforms arbitrary waveforms can be generated up to 128k in length at high sampling rates on pul