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Interference affecting RF signals is a familiar problem for development engineers working in the field of RF engineering. It may be caused by sporadic or brief events within the frequency domain, the spectral behavior of signal sources during frequency switching, or by digital circuits. Identifying the causes behind problems like these is often challenging and can be very time-consuming. To meet such demanding challenges, Rohde & Schwarz has developed the new R&S FSVR, believed to be the first instrument on the market to combine a fully fledged signal and spectrum analyzer with real-time spectrum analyzer capability.
The R&S FSVR seamlessly captures and displays the frequency spectrum over a 40 MHz bandwidth; various display formats are available. Functionality such as the analyzers spectrogram and persistence mode ensure that no events remain hidden to users. With its frequency-selective trigger, the analyzer is also capable of detecting and examining signals that occur sporadically within the spectrum. The instrument's signal and spectrum analyzer capabilities are based on the R&S FSV. They include the full complement of functions and properties that an advanced measuring device of this kind requires to meet modem demands.
REAL-TIME SPECTRUM ANALYSIS UP TO 30 GHZ
In real-time mode, the R&S FSVR captures RF signals seamlessly in the time domain with a bandwidth of up to 40 MHz, transforms them into the frequency domain and displays them as a spectrum. To achieve high time resolution and therefore accurate level measurements, even of short-term or pulsed signals, the instrument can overlap the time windows for fast Fourier transformation (FFT) by at least 80 percent. Since all the data captured is processed in real-time without any gaps, users do not miss even very short signals. The R&S FSVR is thought to be the first analyzer to provide this real-time capability for input frequencies up to 30 GHz or, with an external mixer, up to 110 GHz.
The spectrum analyzer digitizes the RF signal with a sampling rate of 128 MHz and transforms it into the frequency range, computing up to 250,000 spectra per second in the process. Since the human eye cannot register such a large number of spectra, the R&S FSVR combines the data obtained in a detector and displays the results at a refresh rate...