Specifications

  R&S®FSL3
model .03
R&S®FSL3
model .13
R&S®FSL6
model .06
R&S®FSL6
model .16
R&S®FSL18
model .18
R&S®FSL18
model .28
Frequency range
9 kHz to 3 GHz
9 kHz to 6 GHz
9 kHz to 18 GHz
(overrange 20 GHz)
Frequency accuracy 1 × 10-6  
With R&S®FSL-B4, OCXO 1 × 10-7 standard with the R&S®FSL18
Resolution bandwidths
  Standard 300 Hz to 10 MHz in 1/3 sequence, zero span additionally 20 MHz
  With R&S®FSL-B7 10 Hz to 10 MHz in 1/3 sequence, additionally 1 Hz (FFT filter)
  Video bandwidths 10 Hz to 10 MHz
Signal analysis bandwidth 28 MHz
Phase noise typ. –103 dBc (1 Hz) at 10 kHz from carrier, 1 GHz
Displayed average noise level (DANL)
  With 300 Hz RBW typ. –117 dBm
  With 1 Hz FFT RBW and preamplifier
(R&S®FSL-B7,
R&S®FSL-B22 options)
500 MHz: typ. –162 dBm
3 GHz: typ. –158 dBm
Third order intercept (TOI) typ. +18 dBm
Detectors pos/neg peak, auto peak, RMS, quasi-peak, average, sample
Level measurement uncertainty <0.5 dB (30 kHz ≤ f ≤ 3 GHz),
<0.8 dB (3 GHz< f ≤ 6 GHz),
<1.2 dB (6 GHz< f ≤ 18 GHz)
Tracking generator no yes no yes no yes
  Frequency range
1 MHz to 3 GHz
1 MHz to 6 GHz
10 MHz to 18 GHz
  Output level
–20 dBm to 0 dBm
–20 dBm to 0 dBm
–30 dBm to
–10  dBm