The Rohde & Schwarz FSP38 is a high-performance spectrum analyzer covering 9 kHz to 40 GHz with exceptional sensitivity and dynamic range for RF and microwave measurements. It delivers 0.01 Hz frequency resolution, a displayed average noise level of –155 dBm (1 Hz BW), and approximately 100 dB dynamic range using RMS detection. The instrument combines multiple detector types—RMS, Quasi-peak, Peak, and Sample—with flexible resolution bandwidth options spanning 1 Hz to 10 MHz, making it ideal for signal analysis, interference detection, and component characterization across defense, aerospace, telecommunications, and laboratory environments.
Technical Specifications
• Frequency Range: 9 kHz to 40 GHz
• Frequency Resolution: 0.01 Hz
• Resolution Bandwidth: 1 Hz to 10 MHz (digital filters 10 Hz–100 kHz; analog filters 300 kHz–10 MHz; FFT filters 1 Hz–30 kHz; 39 channel filters 100 Hz–5 MHz)
• Phase Noise: < –84 dBc/Hz @ 100 Hz offset (typical –90 dBc/Hz); approximately –113 dBc/Hz @ 10 kHz offset
• Displayed Average Noise Level: –155 dBm (1 Hz BW)
• Dynamic Range: Approximately 100 dB (RMS detector)
• Maximum Input Level: 20 dBm (0 dB attenuation); 30 dBm (10 dB or higher attenuation)
• Absolute Level Uncertainty: < 0.2 dB
• Sweep Speed: 2.5 ms minimum
• IF Bandwidth: 20.4 MHz
• Frequency Span: 0 Hz, 10 Hz to 40 GHz with ±0.1% max deviation
• Internal Reference Aging: 1 × 10⁻⁸ per year (after 30 days); Temperature drift (0–50°C): 1 × 10⁻⁷
• External Reference: 10 MHz
• EMI Bandwidths: 200 Hz, 9 kHz, 120 kHz (–6 dB)
• Detectors: RMS, Quasi-peak, Peak, Sample
• Display: 21 cm TFT color
• Operating Temperature: 0°C to 50°C
• Storage Temperature: –40°C to 70°C
• Dimensions: 412 mm × 197 mm × 417 mm
• Weight: Approximately 14 kg
– Key Features
• 0.01 Hz frequency resolution for precise signal identification
• phase noise performance with selectable bandwidth control
• Four detector modes supporting EMI and general-purpose measurement workflows
• Frequency counter with 0.1 Hz to 10 kHz selectable resolution
• Marker-based analysis with span/500 resolution capability
– Typical Applications
• EMI/RFI compliance and interference characterization
• Component and subsystem RF validation
• Signal monitoring across VLF to millimeter-wave bands
• Laboratory and production test environments
– Compatibility & Integration
• Standard interfaces: GPIB, RS-232
• Optional: LAN/USB connectivity
• 10 MHz reference input/output for external synchronization

















