EMI test receivers

Navigate the complexity of EMC testing with confidence - from first measurements to final certification

EMI 테스트 리시버

Q: What is an EMI test receiver and how does it fit into EMC testing?

An EMI test receiver is used to measure unwanted electromagnetic emissions from electronic devices. It is the core of EMC emissions testing following standard requirements for resolution bandwidths, detectors (quasi-peak, CISPR Average, CISPR RMS), measurement routines and – as most important – the demanding dynamic range to measure high interference amplitudes while achieving a low noise floor and high sensitivity. A full compliant EMI receivers fulfills all CISPR, FCC, EN, ISO, MIL-STD or other global standard requirements while precompliance EMI receivers allow economic precertification with a high certainty.

Q: What is the difference between an EMI receiver and a spectrum analyzer?

An EMI receiver is designed specifically for EMI testing with best dynamic range even in presence of wideband interferences. This is achieved by dedicated preselection filters and low noise components. A spectrum analyzer is more general-purpose instrument with a focus on widest bandwidths and highest digital signal processing capabilities. Another important difference is the EMI receivers scanning vs. the spectrum analyzers sweeping, showing different behavior particularly for intermittent interference testing. Spectrum analyzers offer great value for general EMI analysis or debugging.

Q: How does FFT-based time-domain scanning improve EMI testing speed?

FFT-based time-domain scanning processes thousands of frequency points simultaneously, enabling measurement speeds much faster than the traditional stepped scan. This helps engineers improve reliability for emission detection, provides better insight into transient signals and significantly shortens compliance test cycles.

Q: What is the difference between compliance and pre-compliance EMI testing?

Compliance testing requires compliant instruments and accessories that are also accredited calibrated to regularly verify compliance to international standards. Pre-compliance testing uses pre-compliance receivers with similar detector types but relaxed tolerances. It helps identify potential failures early at best during the development of the product to reduce redesign loops and lower certification costs.

Q: How can pre-compliance EMI testing support product development?

Pre-compliance receivers (e.g., R&S®ESRP or R&S®EPL) allow developers to detect emission problems early in the development stage. At this point, changes are easier to adapt to reduce development cost and shorten the time-to-market. The final stage of the certification process will then be a compliance test to achieve certification, ideally without additional rejection loops thanks to pre-compliance testing before finalizing the product.

Q: What software tools support EMI measurements with Rohde & Schwarz EMI test receivers?

R&S®ELEKTRA automates complete EMC test workflows, including limit line comparison, sequencing, conducted/radiated test execution, and reporting. It improves accuracy, reduces manual effort, and enables integration into automated test systems. R&S®ELEKTRA offers solutions for all EMC standards as well as other testing requirements typically performed in the same testing environment.

모든 EMC 테스트 전략의 필수적 핵심 구성요소

EMI 테스트 리시버; 전자기 방사를 철저히 탐지하도록 설계된 매우 정확한 기기로, 모든 방사에 대한 테스트 기준 적합성을 보장합니다. 자동화 테스트 루틴을 포함하여 표준에 따라 정의된 파라미터에 대한 필수 테스트를 가능한 간단히 설정할 수 있도록 구성되었습니다. R&S EMI 테스트 리시버도 동일 기기에 표준 신호 및 스펙트럼 분석기를 통합하여 더욱 간소화할 수 있습니다.

R&S EMI 테스트 리시버는 IEC, CISPR, CENELEC, ETSI, FCC, ANSI, RTCA, MIL-STD 등 주요 표준화 당국에서 수립한 일체의 상용, 자동차, 군사 EMI 표준을 지원합니다. 고속 FFT 기반 시간 도메인 스캔을 포함하여 기존 주파수 스캔에 비해 테스트를 몇배 더 빠르게 수행할 수 있는 최신 수정사항이 모두 지원됩니다. 외부 믹서에서 지원하는 최대 500 GHz 주파수로 최대 44 GHz까지 필요한 주파수 대역을 모두 지원합니다.

R&S는 Full Compliance 및 Precompliance EMI 테스트 리시버를 모두 지원합니다. Full Compliance 리시버는 위에 나열된 것과 같이 인증 시험에 필요한 모든 요구사항을 구현합니다. Precompliance 리시버는 개발 과정에서 EMI 테스트를 수행하는 데 최적의 가성비를 제공하는 솔루션입니다. 이러한 리시버는 표준에 따른 대역폭, 리미트, 디텍터를 구현하지만 Full Compliance의 정확한 요구사항을 완전히 충족하지 않습니다.

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Three pillars of confidence

Proven precision you can rely on

Expertise you can rely on

Our EMI receivers are the market reference. They deliver speed, accuracy, reliability and reproducibility across every relevant EMC standard. With clear detectors, limit lines and reporting, you can trust your results will match what you see in the chamber.

Confidence at every stage of EMC testing

Consistent performance from bench to chamber

From early debugging to precompliance and final certification, our portfolio supports you at every step. You start with the right tool on the bench, keep the same approach in the lab, and finish with full compliance in the chamber. This consistency helps you find issues earlier and avoid late surprises.

Consistency that pays off

Long-term reliability that keeps projects on track

Future-proof instruments that last and prevent surprise failures and roadblocks. Designed to reduce retests and delays, they offer a return on investment that is as reliable as the measurements themselves.

Trade-in your old EMI compliance receiver

Save up to 25% trade-in credit for R&S®ESR or R&S®ESW

The R&S®ESW and R&S®ESR test receivers enhance the user experience by offering a bigger touch screen, dramatically improved measurement speed, the possibility of real-time spectrum analysis and the overall ability to take on more tasks. Save now and experience improved options of the EMI test receivers.

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EMI test receivers FAQ

What is an EMI test receiver and how does it fit into EMC testing?

What is the difference between an EMI receiver and a spectrum analyzer?

How does FFT-based time-domain scanning improve EMI testing speed?

What is the difference between compliance and pre-compliance EMI testing?

How can pre-compliance EMI testing support product development?

What software tools support EMI measurements with Rohde & Schwarz EMI test receivers?

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