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, it’s possible to view two pulses separated by 50 dB in amplitude on an oscilloscope with the proper enhancements...
Register or Sign in below to download the full article in .PDF format, including high-resolution graphics and schematics when applicable.