The Rohde & Schwarz FSEK20 is a wide-band spectrum analyzer for RF and microwave signal analysis across development, production, and compliance testing. It delivers exceptional dynamic range up to 152 dB and intermodulation-free dynamic range to 110 dB with 10 Hz resolution bandwidth. The instrument supports advanced measurement modes including vector signal analysis, phase noise characterization, and modulation analysis with constellation and eye diagrams. A modular architecture enables frequency extension via options and external mixers, while a 9.5″ color TFT display with multi-trace capability and quasi-analog rendering supports efficient signal monitoring. Minimum sweep time reaches 1 µs in standard operation and 2 µs in ZERO SPAN mode, accommodating dynamic measurement requirements in aerospace, defense, and communications applications.
Technical Specifications
• Frequency Range: 20 Hz to 3.5 GHz base; up to 7 GHz with FSE-B2 option; extends significantly with FSE-B21 external mixers (e.g., 40 GHz)
• Resolution Bandwidth: 1 Hz to 10 MHz in 1/2/3/5 steps; digital filters 10 Hz to 1 kHz; FFT bandwidths to 1 Hz
• Video Bandwidth: 1 Hz to 10 MHz in 1/2/3/5 steps
• Dynamic Range: Maximum 152 dB; intermodulation-free 110 dB (10 Hz RBW); 150 dB under optimal conditions
• 1 dB Compression Point: +10 dBm
• Sweep Time: 1 µs minimum; 1500 s maximum; 2 µs in ZERO SPAN mode
• Display: 9.5″ color TFT, four active traces, marker functions, limit-line pass/fail
• Input: 50 Ω N-connector with internal attenuator
• Power: 180–230 VA AC mains
• Physical: 435 × 236 × 460–570 mm; 22.7–25.8 kg
– Key Features
• Spectrum analysis with high dynamic range
• Vector signal analysis (FSE-B7) for BPSK, QPSK, Offset QPSK, DQPSK
• AM/FM demodulation
• Phase noise and noise measurement (software options)
• Burst, gated, and power-ramping measurements
• Intermodulation, harmonics, and spurious analysis
– Typical Applications
• RF/microwave component characterization
• Modulated signal analysis and validation
• Phase noise assessment
• Compliance and EMC testing
– Compatibility & Integration
• GPIB (IEEE-488) remote control
• Ethernet support (FSE-B16 option)
• Modular option architecture for frequency and analysis expansion
