The Rohde & Schwarz FSEK20 Spectrum Analyzer comes with low phase noise and OCXO, 1Hz resolution bandwidth and an FFT filter.
The FSEK20 is outstanding for its extremely low noise floor without any impairment to the dynamic range at large signal levels. This can be seen, for example, from the 1 dB compression point of +10 dBm, which yields a dynamic range of 109 dB even at a resolution bandwidth of 1MHz, allowing GSM, DECT and EDGE power ramps to be determined.
