The Rohde & Schwarz ESVD is a triple-conversion heterodyne EMI test receiver engineered for precise electromagnetic interference measurements across 20 MHz to 1 GHz, with optional extension to 2.05 GHz. This instrument combines a crystal-stabilized synthesizer, high-level mixers, and parallel Peak/Average/Quasi-Peak detectors to deliver simultaneous multi-mode signal analysis. Its modular architecture, switchable RF attenuation (0 to 120 dB in 10 dB steps), and group-delay optimized IF filters support both fixed-location EMI surveys and mobile radio network diagnostics.
Technical Specifications
• Frequency Range: 20 MHz to 1 GHz standard; optional extension to 2.05 GHz
• Receiver Architecture: Triple-conversion heterodyne with intermediate frequencies at 1354.7 MHz or 394.7 MHz (first IF), 74.7 MHz (second IF), and 10.7 MHz (third IF)
• RF Attenuator: 0 to 120 dB in 10 dB increments
• Preselector Configuration: One fixed-tuning unit plus five tracking preselectors; Option ESVD-B2 adds four additional fixed-tuning filters
• Synthesizer (1st LO): Crystal-stabilized, 100 Hz step resolution, sweep-capable for rapid frequency scans
• Level Measurement Range: −14 dBµV to +137 dBµV
• IF Bandwidths: 10 kHz, 120 kHz, 300 kHz, 1 MHz (third IF stage)
• Frequency Setting Error: 70 dB dynamic range
• Parallel Peak, Average, and Quasi-Peak detectors with IF bandwidth correction (PK/MHz) for broadband interference measurement
• Switchable preamplifier between preselector and first mixer
• Automatic overload detection across receiver stages
• I/Q demodulator for digital signal analysis; Option ESVD-B1 supports GSM and PCN systems
• Built-in test functions and permanently activated peak detector for measurement monitoring
– Typical Applications
• EMI compliance testing and RFI surveys
• Mobile radio network planning and operation (GSM, PCN)
• Fixed and mobile coverage measurements
• Frequency coordination and interference identification
– Compatibility & Integration
• Standards compliance: CISPR, CENELEC, ETSI, FCC, VCCI, VDE, EN55011–EN55022, VDE 0871–0879, CISPR 16-1, VDE 0876, ANSI C63.2
• Frequency accuracy aligns with GSM recommendations
