The Rohde & Schwarz FSU8 is a high-performance spectrum analyzer engineered for demanding RF measurement applications across research, development, and production environments. Built on advanced circuit concepts, modern RF components, A/D converters, and ASIC technology, it delivers precise signal analysis with exceptional sensitivity and dynamic range. The instrument maintains compatibility with legacy test routines from the FSE and FSIQ series, streamlining integration into established workflows.
Technical Specifications
Frequency Coverage
• DC coupled: 20 Hz to 8 GHz
• AC coupled: 1 MHz to 8 GHz
• Frequency resolution: 0.01 Hz
• External reference: 1 MHz to 20 MHz in 1 Hz steps
Receiver Performance
• DANL (preamp on): < −152 dBm; −158 dBm (1 Hz)
• With optional R&S FSU-B24 preamplifier: −168 dBm (1 Hz) at 20 GHz, −155 dBm (1 Hz) at 50 GHz
• Third-order intercept (typical): +25 dBm
• Adjacent Channel Leakage Ratio (ACLR): up to 77 dB for 3GPP measurements
Analysis Bandwidth
• Resolution bandwidth (standard): 10 Hz to 50 MHz
• FFT filters: 1 Hz to 30 kHz
• Channel filters: 100 Hz to 5 MHz (39 available)
• EMI filters: 200 Hz, 9 kHz, 120 kHz, 1 MHz
• Video bandwidth: 1 Hz to 10 MHz
Measurement Capability
• Sweep time: 2.5 ms minimum; 1 µs minimum (zero span)
• Measurement speed: up to 80 measurements/s (manual mode); 70 measurements/s (with GPIB trace transfer)
• Frequency counter resolution: 0.1 Hz to 10 kHz, selectable
– Key Features
• Time-domain power measurement with channel or RRC filters
• TOI and noise/phase-noise markers
• Peak list marker for spurious emissions detection
• Split-screen display mode
• CCDF measurement function
• Harmonic distortion and spurious emissions analysis
• Wide detector portfolio: Average, Peak, Negative Peak, RMS, Sample
• 21 cm (8.4 in.) TFT color display, 800 × 600 pixel SVGA resolution
– Measurement Options
• Phase noise measurement (FS-K40 application firmware)
• Noise figure measurement (FS-K30 option)
• External mixer support via LO/IF ports (R&S FSU-B21 option)
– Connectivity
Software, USB, LAN, GPIB, and RS-232-C interfaces enable flexible integration and remote operation.
