Abstract: A real-time spectrum analyzer (RTSA) includes an analog-to-digital converter (ADC) configured to convert in real-time an input analog signal into a digital input data stream, a digital down-converter (DDC) configured to down-convert in real-time the digital input data stream into a down-converted input data stream, a fast Fourier transform (FFT) unit configured to generate in real-time FFTs of the down-converted input data stream, an acquisition memory circuit configured to store in real-time the FFTs generated by the FFT unit, and an analyzer configured to read in non-real time the FFTs stored in the acquisition memory.

Abstract: A system and method are provided for displaying input signals from a DUT on a display screen. The method includes sending a data stream of digitized data received from the DUT to an FPGA for serial decoding; receiving decoded symbols from the FPGA; identifying valid symbols among the decoded symbols indicating transitions between the decoded symbols; storing the valid symbols with corresponding time-tags as valid packets in memory, and discarding ones of the decoded symbols occurring between the valid symbols; and plotting on the display screen the valid packets occurring between beginning and ending valid packets of the stored valid packets. The beginning valid packet has a corresponding time-tag occurring immediately before a first point time-tag associated with a left edge of the display screen, and the ending valid packet has a corresponding time-tag occurring at or immediately before a last point time-tag associated with a right edge of the display screen.

Abstract: A real-time spectrum analyzer (RTSA) includes an analog-to-digital converter (ADC) configured to convert in real-time an input analog signal into a digital input data stream, a digital down-converter (DDC) configured to down-convert in real-time the digital input data stream into a down-converted input data stream, a fast Fourier transform (FFT) unit configured to generate in real-time FFTs of the down-converted input data stream, an acquisition memory circuit configured to store in real-time the FFTs generated by the FFT unit, and an analyzer configured to read in non-real time the FFTs stored in the acquisition memory.

Abstract: A real-time spectrum analyzer (RSTA) includes an analog-to-digital converter (ADC) configured to convert in an input analog signal into a digital input data stream, a fast Fourier transform (FFT) unit configured to generate FFTs of the digital input data stream for successive time slices of the input analog signal, wherein the FFTs of each time slice are grouped into FFT bins, each FFT bin including the FFTs of a given frequency band, a first detector configured to reduce a number of FFTs per bin generated by the FFT unit and output a corresponding thinned FFT data stream for each of the successive time slices, a second detector configured to compress the thinned FFT data stream output by the first detector and output a compressed FFT data stream for each of the successive time slices, an FFT plotter configured to generate first display data representing an FFT plot of a given time slice of the input analog signal from the thinned FFT data stream output by the first detector, and a spectrogram plotter configu