Pulsed signal measurements with an oscilloscope can become challenging when there is a lack of sufficient dynamic range and signal-to-noise ratio (SNR). In many applications, whether commercial or military, low-level pulses are often difficult to detect and measure in the presence of much larger pulses. However, using a technique to “span down” the initial 3-dB bandwidth of an oscilloscope by means of digital downconversion can greatly enhance an oscilloscope’s SNR. In fact,
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