Rohde & Schwarz FSW13 2Hz to 13GHz Signal and Spectrum Analyzer

The Rohde & Schwarz FSW13 is a signal and spectrum analyzer engineered for demanding RF measurement tasks from 2 Hz to 13.6 GHz. It delivers superior dynamic range, low noise floor, and exceptional phase noise performance for precise characterization of complex signals. The instrument combines DC and AC coupling modes, configurable real-time analysis bandwidth up to 512 MHz, and measurement uncertainty under 0.04 dB at 8 GHz - making it ideal for component verification, signal development, and laboratory-grade spectral analysis.

Technical Specifications

Frequency Range: 2 Hz to 13.6 GHz (DC coupled); 10 MHz to 13.6 GHz (AC coupled) Analysis Bandwidth: Up to 512 MHz real-time, with options including 40 MHz, 160 MHz, 320 MHz, 1200 MHz, 2000 MHz, 2001 MHz, 4001 MHz, 5000 MHz, 6001 MHz, and 8001 MHz Displayed Average Noise Level (DANL):

• 2 GHz: −156 dBm (1 Hz) typical; −159 dBm (1 Hz) with R&S®FSW-B13


• 8 GHz: −156 dBm (1 Hz) typical


• 20 GHz: −150 dBm (1 Hz) typical


• With preamplifier (R&S®FSW-B24): 8 GHz −169 dBm; 20 GHz −166 dBm (1 Hz) Phase Noise:


• 1 GHz carrier, 10 kHz offset: −137 dBc (1 Hz) typical


• 10 GHz carrier, 10 kHz offset: −128 dBc (1 Hz) typical Measurement Uncertainty: < 0.04 dB at 8 GHz Dynamic Range: WCDMA ACLR dynamic range of 88 dB with noise cancellation; spurious measurement range via low DANL Maximum Input Power:


• f < 1 GHz: +30 dBm typical


• f < 3 GHz: +25 dBm typical


• 3 GHz 8 GHz: +7 dBm nominal (RF attenuation = 0 dB, preamplifier off) Resolution Bandwidth: 1 Hz to 10 MHz in 1/2/3/5 sequence; optional 20 MHz, 50 MHz, 80 MHz with R&S®FSW-B8 Frequency Reference Aging: ±1 × 10⁻⁷/year Bandwidth Uncertainty: < 3% nominal Shape Factor (60 dB:3 dB): < 5 nominal

Key Features

• Selectable real-time bandwidth options for adaptive measurement resolution


• Low phase noise across 1 GHz to 10 GHz range for sensitive detection


• Optional preamplifier extends sensitivity to −169 dBm at 8 GHz


• Independent receive path optimizes dynamic range up to 1 GHz


• DC coupling enables measurement from ultralow frequencies

Typical Applications

• Spurious and harmonic emissions analysis


• Adjacent channel leakage ratio (ACLR) verification for wireless devices


• Complex signal characterization and modulation quality assessment


• Component development and validation


• Laboratory and systems integration environments