The Rohde & Schwarz ESMI is an EMI test receiver that merges high-specification EMI measurement capabilities with spectrum analyzer functionality. It delivers compliance testing across CISPR, VDE, FCC, EN, VCCI, MIL-STD, VG, DEF-STAN, BS, and DO 160 standards while supporting general laboratory signal analysis. The instrument integrates measurement and analysis functions optimized to accelerate testing procedures.
Technical Specifications
• Frequency range: 20 Hz to 26.5 GHz (110 GHz with external mixers)
• Resolution: 1 Hz
• Frequency scale: Selectable LIN/LOG
• Frequency span: 10 Hz to 2/5.2/26.5 GHz
• RF attenuation: Switchable across wide range in small steps
• Preselection: Refined preselection filters
• Preamplifier: Low-noise design with wide dynamic range
• Mixer: High-level mixer for IF conversion with overload detection
• Envelope detector: 70 dB dynamic range, highly linear
• Logarithmic converter (analyzer path): 110 dB range
• DC logarithmic converter: 70 dB dynamic range
• Detectors: Five parallel channels for peak, minimum, quasi-peak, average, and RMS weighting
• Measurement standards: CISPR 16-1 and VDE 0876 compliant
• Tracking generator: Integrated for EMC measurements
• Demodulators: AM/FM for audio monitoring
• Calibration: Pulse and sine calibration sources with CISPR weighting verification
• Transducer compensation: Automatic via correction factor tables (up to four, combinable)
• Display: Split-screen capability for simultaneous trace memories and detector results
• Limit lines: Eight supported with automatic out-of-limit detection
– Key Features
• OVERVIEW mode displays full interference spectrum with CISPR-standard IF resolution bandwidths and quasi-analog selectivity tuning for optimized sweep time
• SCAN mode enables frequency-specific measurements with automated scanning between start/stop frequencies at selectable step sizes
• Broadband interference rejection through filters ahead of IF preamplifier
• Overload detection at mixer and test channel stages
– Typical Applications
• EMI/RFI compliance testing
• Signal monitoring and analysis
• Laboratory measurements requiring dual receiver/analyzer capability
– Compatibility & Integration
Designed for environments requiring conformance to international commercial and military EMC standards.
