The Rohde & Schwarz ESU40 is an EMI test receiver engineered for electromagnetic compatibility (EMC) testing and interference analysis across DC to 40 GHz. It delivers measurement uncertainty below 1 dB and dynamic range exceeding 130 dB, meeting CISPR and MIL-STD compliance requirements for product certification and radiated/conducted emissions testing.
Technical Specifications
Frequency Coverage
• Primary input (DC coupled): 20 Hz to 40 GHz
• Primary input (AC coupled): 10 MHz to 40 GHz
• Secondary RF input (DC coupled): 20 Hz to 1 GHz
• Secondary RF input (AC coupled): 9 kHz to 1 GHz
• Frequency resolution: 0.01 Hz
• Frequency counter resolution: 0.1 Hz to 10 kHz (selectable)
Measurement Bandwidths & Performance
• Available bandwidths: 10 Hz to 10 MHz (1/2/3/5 sequence); digital 10 Hz to 100 kHz; analog 200 kHz to 5 MHz; discrete 6 dB widths from 10 Hz to 1 MHz
• CISPR and MIL-STD-compliant bandwidths supported
• Shape factor (60 dB:3 dB): ≤6 at ≤100 kHz; <12 from 200 kHz to 2 MHz; <7 from 3 MHz to 10 MHz
• Shape factor (60 dB:6 dB): <5
• Bandwidth uncertainty: <6 % at ≤100 kHz; <12 from 200 kHz to 2 MHz; 130 dB
• Measurement uncertainty: <1 dB
• Amplitude accuracy: ±0.5 dB
• Measurement speed: 1 ms minimum; FFT-based time-domain scan for reduced total test time; analyzer sweep minimum 2.5 ms
– Key Features
• Parallel real-time intermediate-frequency analysis in receiver mode
• Time-domain resolution starting at 10 µs with extended monitoring capability
• Fast overview capability via analyzer mode
• Dual RF inputs for flexible test configurations
• All detectors implemented with digital signal processing for measurement stability
– Typical Applications
• Product certification and compliance testing (CISPR, MIL-STD)
• Radiated and conducted emissions measurements
• Interference source identification and characterization
• Pre-compliance and full-compliance EMC testing
– Compatibility & Integration
Designed for laboratory and field deployment in EMC test environments requiring CISPR and MIL-STD compliance verification across consumer, industrial, aerospace, and automotive product categories.
