PC-based, portable measuring instrument achieves 200mV to 800V input range

TIEPIE ENGINEERING Handyprobe HP3 is a USB oscilloscope, spectrum analyzer, voltmeter and data logger with a differential input capable of measuring voltages from 200mV full scale up to 800Vdc (566Vac), 10 bit resolution, a high sampling rate of 100MSamples per second, continuous streaming at 10MSamples per second and a record length of 1MSamples, 800Vdc (566Vac) input range on differential input. Units differential input permits measurements performed directly on the mains power or a motor driver without short circuiting the instruments ground.

http://www.tiepie.nl