Rohde & Schwarz ESU8 EMI Test Receiver

The Rohde & Schwarz ESU8 is a dual-input EMI test receiver combining CISPR 16-1-1 compliance with high-end spectrum analyzer functionality for civil and military standards validation. RF Input 1 spans 20 Hz to 8 GHz; RF Input 2 extends to 1 GHz. The instrument delivers excellent RF characteristics, wide dynamic range, and minimal phase noise with very low measurement uncertainty—critical for repeatable EMI compliance work.

– Technical Specifications

Frequency Coverage & RF Performance
• RF Input 1: 20 Hz to 8 GHz
• RF Input 2: 20 Hz to 1 GHz
• 12 preselection filters from 20 Hz to 3.6 GHz (switchable; disableable in analyzer mode)
• Integrated 20 dB preamplifier (1 kHz to 3.6 GHz) standard; optional 30 dB low-noise preamplifier to 40 GHz available

Resolution & Bandwidth
• Resolution Bandwidths: 10 Hz to 10 MHz in 1/2/3/5 steps
• IF Filter 3 dB bandwidths: 10 Hz to 10 MHz in 1/2/3/5 steps
• IF Filter 6 dB bandwidths: 10 Hz, 100 Hz, 200 Hz, 1 kHz, 9 kHz, 10 kHz, 100 kHz, 120 kHz, 1 MHz

Detection & Measurement
• Seven detector types: Peak, Min Peak, RMS, Average, CISPR-AVG, CISPR-RMS, Quasi-Peak
• Digital detector design ensuring stability and reproducibility
• Time-domain scan with FFT option for accelerated overview measurements
• Analyzer mode sweep time minimum 2.5 ms
• Time-domain analysis with 10 µs resolution; monitoring time >2 h
• Frequency scan supporting three parallel detectors (up to 2 million test points/trace)
• Time-domain measurements: up to 2 million test points, ≥10 µs/point

Operational Modes
• Receiver mode with parallel real-time IF analysis
• Fully and partially automatic measurements (preview, data reduction, final measurement)

– Key Features

• Dual-input architecture optimized for swept and broadband EMI testing
• Internal complex preselection minimizes out-of-band interference
• High measurement speeds via FFT-based time-domain capture
• Wide detector selection meets CISPR and MIL-STD requirements

– Compatibility & Integration

• GPIB, LAN (Ethernet), and USB interfaces
• Remote control via GPIB or LAN
• LabView, LabWindows/CVI, VXI Plug & Play driver support
• Remote Desktop capable