Rohde & Schwarz FSEM30 20Hz-26.5GHz Spectrum Analyzer

The Rohde & Schwarz FSEM30 is a spectrum analyzer covering 20 Hz to 26.5 GHz, engineered for signal analysis, EMC testing, component characterization, and interference detection. It delivers exceptional measurement speed with a quasi-analog refresh rate of 25 sweeps/s and full-span sweep capability in 150 ms. The instrument analyzes both analog and digital modulated signals

AM, FM, PM, BPSK, QPSK, π/4-DQPSK, 8PSK, QAM, MSK, GMSK, and 2FSK - making it suitable for advanced digital communication system testing.

Technical Specifications

• Frequency range: 20 Hz to 26.5 GHz


• Resolution bandwidth (RBW): 1 Hz to 10 MHz, adjustable in 1/2/3/5/10 steps


• Video bandwidth (VBW): 1 Hz to 10 MHz, adjustable in 1/2/3/5 steps


• Displayed average noise level (DANL): -150 dBm in 10 Hz bandwidth


• Dynamic range: 150 dB maximum; 115 dB intermodulation-free


• Third-order intercept point (TOI): +20 dBm


• 1 dB compression point (RF input): +10 dBm


• Phase noise: -123 dBc/Hz at 10 kHz offset


• Level measurement uncertainty: <1 dB (up to 1 GHz), <1.5 dB (up to 7 GHz)


• Sweep time: 150 ms full-span, 1 µs zero-span; adjustable 1 µs to 1500 seconds


• Refresh rate: 25 sweeps/s quasi-analog display


• Input impedance: 50 Ohms

Key Features

• 9.5-inch active LC TFT display


• Internal and external RF triggering with threshold control


• Gated sweep and trigger delay capability


• Built-in AM/FM audio demodulator with loudspeaker and headphones output


• Modular architecture supporting optional upgrades


• IEEE/IEC remote control interface (option FSE-B17)


• Ethernet connectivity (option FSE-B16)

Typical Applications

• Electromagnetic compatibility (EMC) testing


• Digital and analog signal analysis


• Component and device characterization


• Site monitoring and spectrum surveillance


• Interference identification and analysis

Compatibility & Integration

• RF input: 50 Ohm N-type connector


• Remote control: IEC/IEEE bus with optional interface module


• Ethernet: Optional connectivity for network integration