Rohde & Schwarz FSQ26 Signal Spectrum Analyzer

Rohde & Schwarz FSQ26 is a wideband signal spectrum analyzer that covers 20 Hz to 26.5 GHz, enabling precise spectral measurements from baseband to microwave frequencies. It offers a resolution bandwidth (RBW) range of 10 Hz to 50 MHz and a video bandwidth (VBW) range of 1 Hz to 30 MHz, supporting both high-resolution analysis and fast sweeps across the full band. An optional front-end preamplifier (FSU-B25) can be installed to improve sensitivity for weak-signal measurements. The instrument’s frequency reference stability is specified with an aging figure of about 1×10^-7 per year, with options such as FSU-B4 yielding around 2×10^-8 per year for enhanced long-term stability. Typical applications include transmitter spectrum verification, EMI/EMC testing, radar and microwave system analysis, and RF component characterization in development and manufacturing environments. As part of Rohde & Schwarz’s FSQ family, the FSQ26 combines broad frequency coverage with detailed spectral analysis capabilities, providing reliable data for both wideband sweeps and high-resolution, narrowband views.