The AV-151F series of high-voltage function generators allow sine, square, and triangle waveforms to be generated at amplitudes to +/- 2 Amps and frequencies to 20 kHz, with a compliance voltage range of +/- 5 Volts. These instruments also have a variable-gain voltage-to-current-amplifier mode, which allows more complex waveforms (amplified from a low-voltage arbitrary waveform generator, for example) to be generated.