The AVG series of high voltage impulse generators includes units providing pulse widths (measured at the 20% rise time point) in the range of 1 to 10 ns, amplitudes from 120V to 1 kV, and pulse repetition rates to 50 kHz. All models require a 50 Ohm load. Model AVG-3A is similar but features a pulse width at the 20% rise point of < 4 ns and a rise time of less than 1 ns. Instruments with the -B suffix include a complete computer control interface.