February 28, 2011

New functions and features for the R&S®FSVR real-time spectrum analyzer

R&S FSVR Spectrum Analyzer

The R&S®FSVR real-time spectrum analyzer now offers additional postprocessing capabilities and tools for time domain analysis.

A new realtime function displays power versus time and gives a time overview so that users can understand the duration of the signals. The power is displayed in realtime without any time gaps. For deeper analysis a time domain trigger can be used or, especially for analysis of sporadic interferers, the frequency mask trigger. A waterfall diagram for power versus time enables users to observe signals in time domain versus time, which provides new insights. This is an indispensable tool, especially for pulse-to-pulse jitter analysis.
The R&S®FSVR real-time spectrum analyzer stops operation when the frequency masked trigger (FMT) detects an event. In addition, users can now automatically rearm the trigger and display only traces in the spectrogram that are of special interest. The spectrogram is postprocessed in this mode, which makes it possible to increase the time resolution to 4 µs (instead of 52 µs in realtime spectrogram mode).

I/Q data captured in realtime mode can now be saved to an external device (e.g. a PC) via LAN and is available for postprocessing. Users are able to use the FMT to detect exactly the signals they need for a more in-depth analysis. If they need I/Q streaming, they can add the R&S®FSV B17 digital baseband interface to the R&S®FSVR real-time spectrum analyzer. In combination with R&S®IQR data recorder, minutes or even hours of up to 40 MHz RF signals can be captured. An interesting application is to simulate real-world scenarios in the lab such as DVB signals. In addition, a direct connection of the R&S®FSVR real-time spectrum analyzer to the R&S®SMU or R&S®SMBV vector signal generators via the digital baseband interface enables users to modify or distort the signal and send it again in realtime (RF fading), which is useful for developing mobile communications applications.

If engineers want to analyze digital modulated signals disturbed by sporadic interferers, which is a typical application for base station manufacturers, they can use the R&S®FSV-K70 vector signal analysis application triggered by the FMT. For analysis of analog modulated signals or to get a display of frequency, phase or amplitude versus time, the R&S®FSV-K7 analog modulation analysis option can be triggered by FMT as well. Settling effects or characterization of interferers can now be studied in more detail, which is very helpful for designers of synthesizers. The FMT seamlessly fits into the intuitive user interface of R&S®FSV-K70/K7.