The Rohde & Schwarz FSW8 is a high-performance signal and spectrum analyzer engineered for precision RF measurements across 2 Hz to 8 GHz. This instrument combines low phase noise (–137 dBc/Hz at 1 GHz, 10 kHz offset), exceptional sensitivity (DANL typically –159 dBm/Hz at 2 GHz), and measurement uncertainty below 0.4 dB to deliver reliable results in demanding test environments. An intuitive touchscreen interface enables parallel display of multiple measurements for efficient workflow.
Technical Specifications
• Frequency Range: 2 Hz to 8 GHz; extendable to 110 GHz with external harmonic mixers
• Analysis Bandwidth: Internal up to 8.3 GHz; real-time up to 160 MHz; optional bandwidths from 28 MHz to 5 GHz with external digitizer
• Phase Noise: –137 dBc/Hz (1 GHz carrier, 10 kHz offset); –128 dBc/Hz (10 GHz carrier, 10 kHz offset)
• DANL: Typically –159 dBm/Hz at 2 GHz; improves to –169 dBm/Hz at 8 GHz with preamplifier (R&S®FSW-B24); noise cancellation provides up to 13 dB improvement
• Measurement Uncertainty: 100 dBc; 60 dBc at 2 GHz internal analysis bandwidth
• WCDMA ACLR Dynamic Range: –88 dBc with noise cancellation
• Resolution Bandwidths: 1 Hz to 10 MHz standard; 20 MHz to 80 MHz with R&S®FSW-B8 option; bandwidth accuracy < 2 %; shape factor (60:3 dB) 25 dBm below 8 GHz; +15.5 dBm (f ≤ 3 GHz, RF attenuation 0 dB, preamplifier off); +10 dBm (3–8 GHz); +7 dBm (> 8 GHz)
• Frequency Reference Aging: 1 × 10⁻⁷/year
– Key Features
• Wide analysis bandwidth options support real-time signal capture and post-processing
• Low-noise architecture enables detection of weak signals in presence of interference
• Flexible input protection accommodates high-level signals without degradation
– Typical Applications
• Wireless device characterization (WCDMA, adjacent-channel leakage ratio measurement)
• Phase noise analysis of oscillators and synthesizers
• Wideband signal monitoring and analysis
• Harmonic and spurious measurement
– Compatibility & Integration
Expands to millimeter-wave frequencies via external harmonic mixers. Optional preamplifier (R&S®FSW-B24) and analysis bandwidth module (R&S®FSW-B8) extend measurement capability.
