The Rohde & Schwarz FSL18 is a portable spectrum analyzer spanning 9 kHz to 18 GHz (overrange to 20 GHz) designed for development, service, and production environments. Weighing less than 8 kg with integrated carrying handle and optional battery operation, it delivers high-end measurement capability in a field-deployable package. The instrument combines 28 MHz demodulation bandwidth with resolution from 10 Hz to 10 MHz, achieving displayed average noise levels of -162 dBm (1 Hz FFT RBW, preamplifier at 500 MHz). Phase noise performance reaches -103 dBc (1 Hz) at 10 kHz offset, with third-order intercept at +18 dBm. Level measurement uncertainty remains below 0.5 dB across 30 kHz to 3 GHz, scaling to 1.2 dB at 6–18 GHz.
Technical Specifications
• Frequency Range: 9 kHz to 18 GHz (overrange to 20 GHz)
• Demodulation Bandwidth: 28 MHz
• Resolution Bandwidth: 10 Hz to 10 MHz
• Displayed Average Noise Level: -162 dBm (1 Hz FFT RBW, preamplifier, 500 MHz); -158 dBm typical at 3 GHz
• Phase Noise: -103 dBc (1 Hz) at 10 kHz offset
• Third-Order Intercept: +18 dBm
• Amplitude Range: DANL to +20 dBm
• Level Measurement Uncertainty: <0.5 dB (30 kHz–3 GHz); <0.8 dB (3–6 GHz); <1.2 dB (6–18 GHz)
• Detectors: Positive/negative peak, auto peak, RMS, quasi-peak, average, sample
• RF Attenuator: 5 dB steps
• Reference Frequency: OCXO standard
– Key Features
• Tracking generator available to 18 GHz on selected models
• Direct compatibility with R&S NRP-xx power sensor series; R&S FSL-K9 option for precision power measurement
• Plug-and-play upgrade capability—all options installable without opening the instrument
• Software suite conforming to high-end spectrum analyzer architecture
• Remote control interface enabling transfer of existing measurement code
– Typical Applications
• Radar system and microwave link characterization
• Production testing of microwave components
• Spectral and modulation parameter measurement on WLAN and WiMAX signals
• Field service and mobile deployments
– Compatibility & Integration
Software and remote control protocols align with Rohde & Schwarz high-end spectrum analyzer standards, supporting straightforward migration of measurement routines across product lines.
