Rohde & Schwarz ESIB26 EMI Test Receiver

The Rohde & Schwarz ESIB26 is a dual-function EMI test receiver and spectrum analyzer engineered for electromagnetic compatibility testing across international standards including CISPR, EN, VDE, ANSI, FCC, and MIL-STD. The instrument combines high sensitivity, broad dynamic range, and selectivity required for standard-compliant EMI measurements with the operational speed and flexibility of a modern spectrum analyzer.

Technical Specifications

The ESIB26 covers Input 1 from 20 Hz to 26.5 GHz, with Input 2 extending 20 Hz to 1 GHz and offering additional pulse protection. External mixers (Option FSE-B21) extend coverage to 110 GHz. Noise figure typically reaches 10 dB with inherent noise below -3 dBµV. Large-signal immunity is rated at +10 dBm (1 dB compression point), enabling measurements across wide dynamic ranges. Measurement accuracy is typically better than 0.7 dB, with uncertainty under 1 dB up to 1 GHz. The instrument delivers minimum measurement times of 100 µs and supports zero-span time-domain measurements with 50 ns resolution for interference source characterization. Resolution bandwidths include CISPR options at 200 Hz, 9 kHz, and 120 kHz, plus MIL-STD bandwidths from 10 Hz to 10 MHz (6 dB). Analyzer mode provides 1 Hz to 10 MHz adjustable in 1/2/3/5 steps (3 dB), with FFT filtering to 1 kHz available via Option B5. Automatic scanning stores four traces simultaneously - up to 80,000 values per trace (250,000 for single trace). Parallel detector operation supports up to four simultaneous detectors: Peak, Average, Quasi-Peak, CISPR Average, and RMS, with proper pulse weighting per CISPR 16-1-1 and VDE 0876.

Key Features

• Dual receiver/analyzer operation with split-screen display capability


• Preselection in both receiver mode (fixed) and analyzer mode (selectable)


• Integrated 20 dB preamplifier


• Simultaneous multi-detector architecture for comprehensive signal characterization

Typical Applications The ESIB26 supports EMC test houses, service providers, governmental organizations, safety standard authorities, and military branches. Product development teams use the instrument from initial design stages through final certification testing.

Compatibility & Integration The instrument meets requirements across CISPR, EN, VDE, ANSI, FCC, and MIL-STD specifications, enabling deployment in accredited test laboratories and industrial EMC environments.