Rhode and Schwarz FSW8 Signal Analyzer

The Rohde & Schwarz FSW8 is a signal and spectrum analyzer built for precision measurement across 2 Hz to 8 GHz, with extension capability to 110 GHz using external harmonic mixers. It delivers exceptional phase noise performance, dynamic range exceeding 100 dBc, and measurement uncertainty below 0.4 dB to 8 GHz - making it ideal for oscillator characterization, spurious analysis, and demanding RF applications.

Technical Specifications

• 2 Hz to 8 GHz native; extendable to 110 GHz with external mixers


• Standard analysis bandwidth up to 500 MHz


• Extended analysis bandwidth up to 8.3 GHz with optional modules (B80, B320)


• Real-time analysis bandwidth: 160 MHz standard, 800 MHz at 2.4 million FFT/s Phase Noise


• –137 dBc (1 Hz) at 10 kHz offset from 1 GHz carrier


• –128 dBc (1 Hz) at 10 kHz offset from 10 GHz carrier


• With R&S FSW-B4 precision frequency reference (OCXO): –140 dBc (1 Hz) at 10 kHz offset (1 GHz), typical Noise Floor & Sensitivity


• DANL typically –156 dBm (1 Hz) at 8 GHz


• DANL typically –159 dBm (1 Hz) at 2 GHz without preamplifier


• High sensitivity down to –120 dBm (1 Hz) from 2 Hz baseband Dynamic Range & Linearity


• Spurious-free dynamic range > 100 dBc


• Dynamic range –88 dBc with noise cancellation (WCDMA ACLR)


• Third-order intercept 25–30 dBm nominal


• dynamic range to 1 GHz with separate receive path Measurement Accuracy


• Total measurement uncertainty < 0.4 dB to 8 GHz


• High-level measurement accuracy to 8 GHz

Key Features

• 12.1" high-resolution multitouch display with gesture support


• Windows 10 interface with flat design and intuitive multi-view result display


• Rapid sweep times with efficient measurement rates


• Large I/Q memory for recording extended signal sequences


• Quick instrument setup switching


• MultiView capability displaying multiple results simultaneously


• Embedded SCPI recorder for automated script generation

Typical Applications

• Oscillator development for radar and communications


• Spurious and harmonic analysis requiring high dynamic range


• Phase noise characterization and frequency stability testing


• Wideband signal acquisition and analysis

Compatibility & Integration Supports external Rohde & Schwarz harmonic mixers for frequency extension and optional precision frequency reference modules (R&S FSW-B4) for enhanced close-in phase noise performance.