R&S®EVS-K4 FFT Measurement Mode / Softkey Explanation

Technical Details Softkey-Explanation Page 1 Softkey-Explanation Page 2 Window Simulation
Fscan/FFT Press to toggle between Fscan and FFT mode (Only available if R&S®EVS-K1 / R&S ®EVS-K4 is installed).
Ref Lev Press to set reference level (highest displayable level). Available values (depending on RF Mode):
  • Low Noise: -80 .. -20 dBm
  • Norm: -70 .. -10 dBm
  • Low Dist: -50 .. +20 dBm
  • Coupled: -80 .. +20 dBm
  • RF Mode Press to select the RF mode:
  • Norm: 0 dB RF attenuation. (max. displayed level range: -110 .. -10 dBm)
  • Low Dist: 25 dB RF attenuation (max. displayed level range: -100 .. 20 dBm)
  • Low Noise: 10 dB preamp gain (max. displayed level range: -120 .. -20 dBm)
  • Coupled: RF mode is coupled to RefLev.
  • FFT Stop Toggle key to select the FFT span. Available values: 0.625 | 1.25 | 2.5 | 5 | 10 | 20 kHz. Start frequency is always 0 Hz.
    Window Toggle key to select the window function for the FFT input signal. Available choices: Hann, Flat Top and None (see Technical Details).