Rohde & Schwarz ESL3 EMI Test Receiver

The Rohde & Schwarz ESL3 EMI Test Receiver combines EMI receiver and spectrum analyzer functionality into a single portable instrument for precompliance and development lab measurements. Operating from 9 kHz to 3 GHz with 1 Hz frequency resolution, it delivers amplitude measurement accuracy of 0.5 dB and displayed average noise level of typically -162 dBm. The instrument features pulse-resistant RF input handling up to 10 mWs and a measurement range of -70 dBm to +23 dBm.

Technical Specifications

• Frequency Range: 9 kHz to 3 GHz


• Frequency Resolution: 1 Hz


• Frequency Span: 0 Hz, 10 Hz to 3 GHz (span uncertainty 3%)


• Amplitude Measurement Accuracy: 0.5 dB up to 3 GHz


• Measurement Range: -70 dBm to +23 dBm


• 1 dB Compression Point: +5 dBm


• Displayed Average Noise Level: Typically -162 dBm at 500 MHz; < -152 dBm with preamplifier (1 Hz)


• RF Input: Pulse-resistant up to 10 mWs


• Resolution Bandwidths: 10 Hz to 10 MHz (-3 dB); 200 Hz, 9 kHz, 120 kHz (-6 dB); 1 MHz impulse


• SSB Phase Noise (500 MHz): -95 dBc (1 Hz) at 1 kHz offset; < -98 dBc typically -103 dBc at 10 kHz offset


• Frequency Counter Resolution: 1 Hz


• Physical Dimensions: 408.8 mm × 158.1 mm × 465.3 mm; 7 kg

Key Features

• Multiple detection modes: Peak (Max/Min), Average, RMS, Quasi-peak, CISPR Average, CISPR RMS


• CISPR 16-1-1 compliant weighting detectors


• Fully automated test sequences


• Variable sweep time capability


• Optional tracking generator, OCXO reference, RF amplifier, and gated sweep function


• NiMH battery pack available for mobile operation


• Rugged case included as standard

Interfaces & Integration

• LAN, USB, and IEC/IEEE bus connectivity


• Video output, IF output, and noise output available with options


• Optional DC power supply and external charger unit

Typical Applications

• Precompliance EMC testing


• Development lab measurements


• Field deployments up to 3000 m altitude


• Standards compliance verification: CISPR, EN, ETS, FCC, ANSI