Rohde & Schwarz ESRP EMI test receiver

The ESRP EMI test receiver from Rohde & Schwarz is a suitable instrument for developers to employ in the early stages of design to detect and eliminate EMC problems in components and instruments.

With the test receiver, products can move very quickly and directly into industrial production.

The company designed the test receiver for diagnostic and precompliance measurements in the frequency range from 10 Hz to 7 GHz. It is not only a fast EMI test receiver with standard-compliant bandwidths and detectors but a full-featured spectrum analyser as well.

The test receiver provides two methods for measuring disturbance signals: the fast, FFT-based time domain scan and the traditional - but slower - stepped frequency scan. Both methods comply with the CISPR 16-1-1 standard for EMC measurements. In the time domain scan mode, the receiver measures conducted disturbances in the CISPR band B with quasi-peak weighting faster, by many orders of magnitude, than conventional EMI test receivers using the traditional method.

The receiver allows manufacturers of modules, boards, instruments and systems to detect and eliminate EMC problems early in development. It measures conducted and radiated electromagnetic interference (EMI). The preselection option protects the frontend against overloading and provides reproducible measurement results.

The fast time domain scan mode reduces measurement times. This makes the test receiver suitable for testing DUTs with function-specific short operating times in the automotive and lighting industries, such as starters and window lifters or fluorescent lamps in the warm-up phase. It is a full-featured spectrum analyser that allows users to better identify disturbances. The spectrogram function displays and records the analysed spectrum versus time. The field-tested IF analysis function displays the spectrum around disturbance signals.

The test receiver is operated by a touch screen and has clearly structured measurement modes. Users can switch between modes by simply pressing a button and easily configure complex measurements and automated test sequences right from the touch screen. It can remotely control simple automatic tests with the help of the ES SCAN EMI software, which records, evaluates and documents data. The EMC32 application software for automated test routines, including report generation, can be used to integrate the receiver into large-scale EMC systems with additional components such as mast, turntable and absorbing clamp/slideway systems and for the remote control of these components. The receiver can even be operated in environments without any AC supply because it also runs on DC power, making it suitable for mobile use in vehicles or battery operation during open area testing.