The Rohde & Schwarz FSW50 is a high-performance signal and spectrum analyzer operating from 2 Hz to 50 GHz, engineered for demanding RF measurements in aerospace, defense, wireless communications, and research environments. It delivers exceptional sensitivity, wide analysis bandwidth up to 8.3 GHz, and real-time analysis capability to 800 MHz. The instrument combines precise phase noise performance, spurious-free dynamic range exceeding 100 dBc, and measurement uncertainty below 0.04 dB above 8 GHz—making it ideal for system integrators, RF engineers, and laboratories requiring reliable broadband signal characterization.
Technical Specifications
Frequency Range & Coverage
• 2 Hz to 50 GHz standard
• Extends to 110 GHz with external harmonic mixers
Analysis Bandwidth
• Internal: up to 8.3 GHz
• Real-time: up to 800 MHz
• Full downlink capture and system evaluation: 500 MHz
• Expandable via R&S®FSW-B bandwidth options (B160, B320, B512, B1200, B2000, B2001, B4001, B5000, B6001, B8001)
Sensitivity (DANL, 1 Hz bandwidth)
• 2 GHz: −159 dBm typical
• 8 GHz: −156 dBm typical (−169 dBm with R&S®FSW-B24 preamplifier)
• 20 GHz: −150 dBm typical (−166 dBm with preamplifier)
• 40 GHz: −144 dBm typical (−165 dBm with preamplifier)
Phase Noise
• 10 kHz offset, 500 MHz carrier: −140 dBc (1 Hz) typical
• 10 kHz offset, 1 GHz carrier: −137 dBc (1 Hz) typical
• 10 kHz offset, 10 GHz carrier: −133 dBc (1 Hz) typical
• 100 Hz offset, 1 GHz carrier: −138 dBc (1 Hz) typical
Dynamic Range & Linearity
• Spurious-free dynamic range: >100 dBc
• Third-order intercept (TOI): −20 to +28 dBm
• Image rejection: <−90 dBc
• WCDMA ACLR dynamic range: 88 dB (with noise cancellation)
• Measurement uncertainty: 8 GHz)
RF Input Specifications
• Maximum input power (0 dB attenuation, preamplifier off): +15 dBm (≤3 GHz), +10 dBm (3–8 GHz), +7 dBm (>8 GHz)
• Second harmonic suppression: >45 dBm
Resolution Bandwidth
• 0 Hz to 10 MHz standard
• Extended options: 20 MHz, 50 MHz, 80 MHz
• 1 Hz to 10 MHz (1/2/3/5 sequence) with R&S®FSW-B8 option
– Key Features
• Wideband real-time signal capture and analysis
• Selectable resolution bandwidths for noise floor optimization
• Optional preamplifier for enhanced sensitivity at high frequencies
• Harmonic mixer support for millimeter-wave extension
• DANL range: −159 to −120 dBm/Hz
– Typical Applications
• Broadband RF/microwave signal characterization
• Adjacent-channel power and modulation quality assessment
• Phase noise and spectral purity measurement
• Multi-carrier system analysis and interference detection
• Harmonic and spurious content evaluation
– Compatibility & Integration
Optional bandwidth, preamplifier, and harmonic mixer modules enable customization for specific measurement requirements across 2 Hz to 110 GHz.
