R&S FSMR3000 microwave measurement receiver

With the R&S FSMR3000, Rohde & Schwarz has developed a microwave measurement receiver to calibrate signal generators and attenuators with one single instrument, with features providing tuned RF level measurements, level measurements, analog modulation and spectrum analysis. The product can be equipped with powerful hardware for high-end phase noise test supplementary to the standard phase noise test with the spectrum analyser. It offers also digital and analog modulation signal analysis, 80 MHz analysis bandwidth, analysis of pulses and VOR/ILS signals.

Along with level calibration, the microwave measurement receiver provides analog AM, FM and φM modulation analysis. It is designed to make signal generator and attenuator calibration less complex and includes features that make calibrating lab test processes easier. The 8, 26.5 and 50 GHz instruments provide all necessary measurement capabilities in a compact single box instrument.

AM modulation depths from 0 to 100% and FM frequency deviations as wide as 16 MHz can be measured. The instrument has a 16-bit AD converter with 200 MSa/s for modulation analysis with an internal signal analysis bandwidth of up to 80 MHz. If the analysis option is installed, modulation measurements on digital modulated signals are also possible. Pulses can also be automatically analysed.

The product provides high-performance spectrum analysis measurements to enable complete analysis of harmonics, spurious emissions, noise figure or phase noise measurements up to 50 GHz. Marker functions and measurement functions for all interesting spectrum measurements are provided to measure noise power, ACLR, harmonic distortion, occupied bandwidth and spectrum emission masks. The resolution bandwidth can be set between 1 Hz and 80 MHz and additional channel filters provided.

Equipped with powerful hardware, the product provides additional phase noise analysis. The receiver can be equipped with a second receive path for high-end applications, enabling cross-correlation and increasing sensitivity by up to 25 dB depending on the number of correlations. The internal sources and largely digital architecture enable the parallel display of phase noise and AM noise. Both noise contributions can be compared in a single display during measurement.