R&S FSW Signal and Spectrum Analyzer | 7 models FSW8–FSW85, 28 MHz analysis bandwidth standard (up to 8.3 GHz optional), phase noise typ. -140 dBc

R&S FSW Signal and Spectrum Analyzer: FSW8–FSW85, Phase Noise typ. -140 dBc (1 Hz)

Overview

The FSW is Rohde & Schwarz's high-end signal and spectrum analyzer, offered in seven models by upper frequency limit: FSW8, FSW13, FSW26, FSW43, FSW50, FSW67 and FSW85. Please request a quotation for the frequency and options you need. The standard signal analysis bandwidth is 28 MHz and can be expanded to 40 MHz–8.3 GHz with options; with the FSW-B90G option, the FSW85 measures up to 90 GHz. With a 12.1-inch touchscreen, it suits RF, microwave and radar measurements that require low phase noise and wide analysis bandwidth.

Key Specifications

• Frequency range (DC coupled): FSW8 2 Hz–8 GHz; FSW13 13.6 GHz; FSW26 26.5 GHz; FSW43 43.5 GHz; FSW50 50 GHz; FSW67 67 GHz; FSW85 85 GHz (to 90 GHz with FSW-B90G option)
• Signal analysis bandwidth: 28 MHz (nom.) standard; optional 40/80/160/320/512 MHz, 1.2/2 GHz, 4.4/6.4 GHz, and 8312 MHz with FSW-B8001
• Phase noise (1 GHz): 10 kHz offset < -136 dBc (1 Hz), typ. -140 dBc (1 Hz); 100 kHz offset < -139 dBc, typ. -143 dBc
• Display and storage: 12.1-inch WXGA color touchscreen (1280 × 800); internal SSD of 128 GB or more
• Power: 100–240 V AC, 50–60 Hz/400 Hz; FSW26 175 W without options
• Dimensions and weight: FSW8–FSW67 462 × 240 × 504 mm; FSW85 462 × 240 × 610 mm; FSW26 approx. 21.5 kg, FSW85 approx. 27.9 kg (without options)
• Environment and calibration: Operating temperature +5 to +50 ℃; recommended calibration interval 1 year

Applications

• Spectrum and modulation analysis of microwave and millimeter-wave components and systems.
• Measurement of radar and wideband communication signals.

Specifications per the Rohde & Schwarz FSW Specifications v17.01 (2025-09) (rohde-schwarz.com, retrieved 2026-10-24).