The Rohde & Schwarz FSH404 is a handheld spectrum analyzer engineered for field-deployed signal analysis across 9 kHz to 3.6 GHz. This splash-proof instrument delivers essential measurement capabilities—signal monitoring, interference hunting, and component testing—in a lightweight 3 kg package. Its integrated preamplifier achieves sensitivity to -161 dBm (1 Hz) typical, supporting demanding RF diagnostics with measurement uncertainty below 1 dB.
Technical Specifications
• Frequency Range: 9 kHz to 3.6 GHz
• Sensitivity (DANL): <-141 dBm (1 Hz); -161 dBm (1 Hz) with preamplifier
• Level Measurement Uncertainty: +10 dBm, typically +15 dBm
• Detector Types: Sample, Max Peak, Min Peak, Auto Peak, RMS
• Display: 6.5″ color LCD, VGA (640 × 480 px)
• Dimensions: 194 mm (W) × 300 mm (H) × 69 mm (D)
• Weight: Approximately 3 kg with battery
• Battery: Li-ion, up to 4.5 hours operation; AC power supply included
– Key Features
• Integrated preamplifier and phase noise measurement capability at 500 MHz
• Directional power measurements supported to 4 GHz
• SD card storage for results, settings, and installation data
• USB and LAN interfaces for remote control and data transfer
• Compatible with R&S FSHView software for measurement documentation
– Typical Applications
• Field spectrum monitoring and signal characterization
• Interference identification and source location
• Component and subsystem RF testing
• Power meter functionality
– Compatibility & Integration
• Two-port network analyzer capability with optional FSH-K42
• Optional modules: Spectrogram Display (K14), Remote Control (K40), LTE-FDD Analysis (K50/K50e), TD-LTE Analysis (K51/K51e), Interference Analysis (K15), Geotagging (K16), Indoor Mapping (K17)
