Rohde & Schwarz FSP3 9KHz-3GHz Spectrum Analyzer

The Rohde & Schwarz FSP3 is a 9 kHz to 3 GHz spectrum analyzer engineered for signal characterization across development and production environments. It delivers exceptional sensitivity with a displayed average noise level of -155 dBm (1 Hz) and >100 dB dynamic range, enabling detection of weak signals in complex RF environments. The instrument combines fast sweep performance - 2.5 ms minimum in frequency domain - with flexible measurement automation for rapid design validation and compliance testing.

Technical Specifications

• 9 kHz to 3 GHz


• Phase noise: -113 dBc (1 Hz) at 10 kHz offset; -125 dBc (1 Hz) at 1 MHz offset Measurement Performance


• Displayed average noise level: -155 dBm (1 Hz)


• Noise floor: -142 dBm


• Total measurement uncertainty: 0.5 dB


• Linearity uncertainty: 0.07 dB (1 s)


• Dynamic range: >100 dB with RMS detector Resolution Bandwidth


• Range: 1 Hz to 10 MHz


• Fully digital RBWs up to 100 kHz with ≤3% deviation


• Level deviation <0.2 dB for digital filters (0 dB to -70 dB range) Sweep & Analysis


• Minimum sweep time: 2.5 ms (frequency domain); 1 s (time domain)


• Measurement speed: 100 measurements/s (manual operation)


• RMS detector standard for modulated signal power measurement

Key Features

• Adjacent channel power (ACP) and multicarrier ACP measurement - standard


• Automatic routines: TOI, OBW, phase noise


• Amplitude statistics and CCDF analysis


• Gated sweep for TDMA signal analysis


• Editable limit lines with PASS/FAIL indication


• EMI bandwidths and quasi-peak detector


• 21 cm TFT color display with split-screen (3 traces per window)

Interfaces & Integration GPIB, Centronics, RS-232-C, USB (standard); LAN optional. AC adapter: 100–240 V AC (±10%), 50–60 Hz (±5%), 24 V / 3 A output.

Physical 3.7 kg; 132 × 58 × 30 mm (adapter).