A low-noise, internal preamplifier for the full frequency range from 100 kHz up to 50 GHz for the R&S®FSU,
R&S®FSQ and R&S®FSMR spectrum and signal analyzers significantly increases sensitivity especially at microwave frequencies - with major benefits for measurement work. Please see the picture for a comparison of noise floors of an R&S®FSU50 with and without preamp switched on: At 50 GHz the R&S®FSU-B24 option
improves the noise floor by nearly 30 dB.
R&S® FSU-B24: Preamp-on-off
The new R&S®FSU-B24 option can be installed in all microwave models (≥ 26 GHz) of the R&S®FSU, R&S®FSQ and
R&S®FSMR series and can now be ordered. Unlike the R&S® ESU/ESU-B24, there is only one option, and it fits all microwave models of the R&S®FSU/R&S®FSQ/R&S®FSMR.
