The Rohde & Schwarz FSEK30 is a high-performance spectrum analyzer covering 20 Hz to 40 GHz for RF signal analysis across research, manufacturing, and compliance applications. It delivers exceptional sensitivity with a displayed noise floor of −150 dBm (typ.) in 10 Hz bandwidth and −174 dBm/Hz at room temperature. The instrument provides 169 dB total dynamic range with 105 dB on-screen capability and 115 dB intermodulation-free dynamic range, enabling detection and characterization of weak signals in complex RF environments.
The FSEK30 features adjustable resolution bandwidth from 1 Hz to 10 MHz in 1/2/3/5/10 steps and supports full-span sweep times of 230 ms with quasi-analog refresh at 25 sweeps/s on its 24 cm/9.5″ LC TFT display. A 1 µs zero-span sweep capability and 50 ns sampling rate (20 MHz A/D) enable rapid transient capture and analysis. The third-order intercept point of +20 dBm (typ.) and 1 dB compression point of +10 dBm define its linearity performance for multi-signal environments.
Technical Specifications
• Frequency range: 20 Hz to 40 GHz
• Resolution bandwidth: 1 Hz to 10 MHz, adjustable in 1/2/3/5/10 steps
• Displayed noise floor: −150 dBm (typ.) in 10 Hz bandwidth; −174 dBm/Hz at room temperature
• Third-order intercept point: +20 dBm (typ.)
• 1 dB compression point: +10 dBm
• Dynamic range: 169 dB total; 105 dB on-screen; 115 dB intermodulation-free
• Full-span sweep time: 230 ms (FSEK); zero-span: 1 µs
• Sweep range: 5 ms to 16,000 s (span ≥ 10 Hz)
• Sampling rate: 50 ns (20 MHz A/D converter)
• Display resolution: 500 pixels
• Display: 24 cm/9.5″ active LC TFT
• Refresh rate: 25 sweeps/s quasi-analog
– Key Features
• Modulation analysis: AM, FM, PM, BPSK, QPSK, π/4-DQPSK, 8PSK, QAM, MSK, GMSK, 2FSK
• Vector signal analyzer option (FSE-B7)
• Gated measurements and burst analysis
• Constellation and eye diagram displays
• Low-noise internal DC sources for VCO characterization
• Temperature stability: 1×10⁻⁹/day with FSE-B4 option (OCXO)
– Typical Applications
• Signal characterization and component testing
• EMC compliance validation
• GSM, DECT, and EDGE modulation analysis
• Modulation depth and deviation measurement
• Vector/frequency/phase error assessment
– Compatibility & Integration
• Ethernet interface (Option FSE-B16)
• IEEE/IEC interface (Option FSE-B17)
• External mixing capability (Option FSE-B21)
• Broadband output 741.4 MHz (Option FSE-B23)
• FFT filtering 1 Hz to 1 kHz (Option FSE-B5)
