The Rohde & Schwarz FSH20 is a handheld spectrum analyzer for field installation, maintenance, and troubleshooting of RF systems. Operating from 9 kHz to 20 GHz, it delivers measured sensitivity down to –162 dBm (typical, with preamplifier at 8–13.6 GHz, 1 Hz RBW) and supports both scalar and vector network analysis. The instrument combines general spectrum analysis with digital signal analysis across GSM, WCDMA, LTE, CDMA2000, and TD-SCDMA standards. Its measurement suite includes channel power, TDMA power, adjacent channel power, and pulsed signal analysis. Cable, antenna, and interference localization capabilities extend field diagnostics. Level measurement uncertainty stays below 1 dB across 10 MHz to 3.6 GHz and below 1.5 dB to 20 GHz. IP3 performance reaches +15 dBm typical from 300 MHz to 3.6 GHz. Phase noise at 500 MHz measures –127 dBc/Hz typical at 1 MHz offset.
Technical Specifications
• Frequency Range: 9 kHz to 20 GHz
• Resolution Bandwidth: 1 Hz to 3 MHz
• Displayed Average Noise Level (DANL, with preamplifier, 1 Hz RBW, 8–13.6 GHz): –162 dBm typical
• Third-Order Intercept (IP3, 300 MHz–3.6 GHz): +15 dBm typical
• Third-Order Intercept (IP3, 3.6–20 GHz): +10 dBm typical
• Phase Noise (500 MHz, 1 MHz offset): –127 dBc/Hz typical
• Level Measurement Uncertainty (10 MHz–3.6 GHz): 0.5 dB typical
• Level Measurement Uncertainty (3.6–20 GHz): 1 dB typical
• Amplitude Measurement Range: Up to +30 dBm
– Key Features
• Two-port scalar and vector network analysis
• Digital signal analysis: GSM/GPRS/EDGE, WCDMA/HSDPA/HSPA+, LTE FDD/TDD, TD-SCDMA, CDMA2000, 1xEV-DO
• Channel power, TDMA power, and adjacent channel power measurements
• Pulsed signal power measurement capability
• Cable and antenna testing
• Radio interference localization
• Optional preamplifier for enhanced sensitivity
• Power measurements supported to 67 GHz with external power sensors
– Typical Applications
• RF system installation and commissioning
• Maintenance and field troubleshooting
• Signal characterization and interference analysis
• Transmitter and receiver validation
• Network analyzer measurements in field environments
