Electronic Design

Wide-Dynamic-Range Spectrum Analyzer Spans 20 Hz To 50 GHz

Very low displayed average noise levels prevail in the FSU50 spectrum analyzer, which features a dynamic range of 20 Hz to 50 GHz. At 50 GHz, the analyzer exhibits a displayed average noise level of ­118 dBm (at a 10-Hz bandwidth). At 2 GHz, displayed average noise level runs ­142 dBm (at a 10-Hz bandwidth). The instrument comes with a wide variety of filter types and comprehensive measurement functions for precise power measurements of wideband signals.

Rohde & Schwarz's FSU50 features a 1-dB compression point of the input mixer of 22 dBm and a typical third-order intercept point of 13 dBm (at a 10-Hz bandwidth and 50 GHz). Phase noise is another key parameter for measuring frequency-processing equipment or when searching for interference signals. In this vein, the FSU50 has values close to the carrier frequency and at larger frequency offsets. At a 10-MHz offset, the analyzer features phase noise of ­160 dBc (at a 1-Hz bandwidth).

As for accuracy, the instrument achieves a total measurement uncertainly of 0.3 dB in the frequency range up to 3.6 GHz. Even at 50 GHz, that value is still 3 dB, without the customary peaking of the preselection filters. The analyzer also can perform 80 measurement sweeps/s (manually) and 70 measurement sweeps/s (remote control) for production testing.

Available now, the FSU50 goes for $86,500.

Rohde & Schwarz
(888) 837-8772, ext. 7982 (U.S.); +1 410 910 7982 (Germany)
See associated figure

TAGS: Components
Hide comments


  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.