How does a USB Pulse Power Sensor Work?

The USB Pulse Power Sensor functions as an  ultra - fast, calibrated power measurement tool which acquires  and  computes  the  instantaneous,  average  and  peak  RF  power  of  a  wideband  modulated  RF  signal.  An internal A/D converter operates at up to 100 MSamples/second, and a digital signal processor carries out  the work required to form the digital samples into a correctly scaled and calibrated trace on the display.