The Rohde & Schwarz FSU50 is a high-performance spectrum analyzer operating from 20 Hz to 50 GHz, engineered for RF characterization in aerospace, defense, and microwave applications. It delivers dynamic range, phase noise performance, and measurement accuracy through a comprehensive detector suite and flexible resolution bandwidth architecture. The instrument executes frequency-domain sweeps in 2.5 ms and time-domain acquisitions in 1 µs, enabling rapid signal assessment across demanding test scenarios.
Technical Specifications
Frequency Coverage: 20 Hz to 50 GHz (DC coupled)
Resolution Bandwidth: 10 Hz to 50 MHz with selectable filter types—digital filters (10 Hz to 100 kHz), fast FFT filters (1 Hz to 30 kHz), channel filters (100 Hz to 5 MHz), RRC filters, and analog filters (300 kHz to 10 MHz). EMI bandwidths include 200 Hz, 9 kHz, and 120 kHz options.
Amplitude Performance: DANL of −158 dBm (1 Hz bandwidth); 1 dB compression point at +13 dBm; TOI exceeding +20 dBm (typically +25 dBm); second-order harmonic intercept typically 55 dBm. ACLR performance reaches 77 dB (3GPP) and 84 dB with noise correction. RMS detector provides 100 dB dynamic range. Display linearity: 0.3 dB total measurement uncertainty across DANL to +30 dBm range.
Phase Noise: −160 dBc/Hz at 10 MHz offset; −123 dBc (1 Hz) at 10 kHz offset.
Sweep Capability: Frequency-domain minimum 2.5 ms; time-domain minimum 1 µs; maximum sweep duration 16,000 s.
Measurement Speed: Up to 20 measurements/s manual; 30 measurements/s via GPIB; 70 measurements/s sustained.
– Key Features
• Demodulation support for GSM/EDGE, W-CDMA, TD-SCDMA, cdma2000, 1xEVDO, and 1xEVDV
• Adjacent channel power (ACP) measurement in time domain
• Statistical analysis via CCDF (complementary cumulative distribution function)
• Standard measurement routines: TOI, MC ACPR, OBW, APD, gated sweep, IF power trigger
• Dual test port adapters: 2.4 mm and N female connectors
– Connectivity & Control
LAN, GPIB (IEEE 488.2), RS-232-C (9-pin SUB-D), and VGA output (15-pin SUB-D). SCPI-compatible GPIB command set with R&S FSE/FSIQ backward compatibility.
