The Rohde & Schwarz FSEA30 is a high-performance spectrum analyzer covering 20 Hz to 3.5 GHz with exceptional measurement speed and dynamic range. Built for digital communication system testing and general-purpose signal analysis, it delivers 110 dB intermodulation-free dynamic range, a noise floor of –150 dBm typical in 10 Hz bandwidth, and phase noise of –123 dBc/Hz at 10 kHz offset. The instrument offers resolution bandwidth from 10 Hz to 10 MHz in 1/2/3/5 steps, video bandwidth from 1 Hz to 10 MHz, and sweep times as fast as 5 ms across full span or 1 µs in zero span. Frequency accuracy reaches 0.000000000025% with 0.01 Hz resolution.
Technical Specifications
Frequency Performance
• Frequency range: 20 Hz to 3.5 GHz
• Frequency accuracy: 0.000000000025%
• Frequency resolution: 0.01 Hz
• Phase noise: –123 dBc/Hz typical at 10 kHz from carrier
• Spectral purity (SSB): –87 dBc/Hz @ 100 Hz, –107 dBc/Hz @ 1 kHz, –120 dBc/Hz @ 10 kHz, –119 dBc/Hz @ 100 kHz, –138 dBc/Hz @ 1 MHz
Dynamic Range & Signal Analysis
• Intermodulation-free dynamic range: 110 dB (10 Hz RBW), up to 115 dB
• Displayed noise floor: –150 dBm typical (10 Hz bandwidth)
• Third-order intercept point: +20 dBm typical
• 1 dB compression point: +10 dBm RF input
• Input impedance: 50 Ω
• Maximum CW RF input: +20 dBm (0.1 W)
Bandwidth & Measurement Speed
• Resolution bandwidth: 10 Hz to 10 MHz in 1/2/3/5 steps
• Video bandwidth: 1 Hz to 10 MHz in 1/2/3/5 steps
• Minimum sweep time: 1 µs (zero span)
• Full-span sweep time: 5 ms
• Sweep time range (span ≥10 Hz): 5 ms to 16,000 s
• Picture refresh rate: 25 sweeps/s quasi-analog
• Sampling rate: 50 ns (20 MHz A/D converter)
Modulation & Triggering
• Built-in AM and FM demodulation
• Optional digital modulation analysis: BPSK, QPSK, π/4-DQPSK, 8PSK, QAM, MSK, GMSK, 2FSK
• Trigger sources: External, Internal (threshold ~–20 dBm)
• Trigger modes: Freerun, TTL, Line, Video, Gated, Delayed
– Key Features
• Zero-span mode for time-domain analysis
• Modular architecture for field expansion
• 500-pixel display resolution
• External and internal triggering with pretrigger and posttrigger functions
– Typical Applications
• Modern digital communication system validation
• Broadband signal characterization
• Phase noise measurement
• Frequency-domain troubleshooting and compliance testing
