With dc-coupled input and rise and fall time of 5 nsec, logarithmic wideband voltage Femto Model HLVA-100 is suited for measurement of fast and high dynamic pulses. It includes adjustable input range, trimpots, and integrated sample and hold circuit for automated baseline correction of amplifier. Switchable at amplifier or remotely, amplifier is laid out in EMI-shielded aluminum package with 50 ohm terminated BNC connectors on input and output.