The R&S ESW26 from Rohde & Schwarz is an EMI Test Receiver that operates from 1 Hz to 26.5 GHz. This instrument has been designed to provide fast and reliable certification measurements while maintaining outstanding RF characteristics, high dynamic range, and measurement accuracy. It meets the most stringent requirements in-line with CISPR, EN, MIL-STD-461, DO-160, ANSI, ETS, VCCI, and FCC safety and EMC standards. The EMI test receiver integrates 21 pre-selection filters (high pass and notch), a pre-amplifier stage, and a pulse current limiter. It can also function as a signal and spectrum analyzer and perform standards-compliant EMI measurements in spectrum analyzer mode – in addition to EMI analysis during development.
The R&S ESW26 uses an FFT-based time domain scan (TDS) besides the conventional stepped scan mode with a virtual step size of a quarter of resolution bandwidth and FFT windows overlapping by more than 90%. This results in high frequency resolution and ultra-fast measurements that are required by CISPR 16-1-1. It utilizes optimal preselection filters to suppress strong out-of-band signals for high sensitivity measurements to be conducted within the passband. It also has a pre-amplifier to further enhance the sensitivity in conjunction with a switchable pulse limiter to protect second pulse-resistant RF input against high energy signals.
This EMI Test Receiver has a multi-channel measurement function that performs amplitude probability measurements (APD) on microwave ovens or IT equipment above 1 GHz on multiple channels in parallel while fulfilling all the requirements of CISPR 16-1-1. It has an option for real-time spectrum analysis to seamlessly measure sporadic and brief signal events in the frequency domain for any length of time, making final product certification easier, shorten test times, and prevent expensive re-design. This test receiver integrates EMC measurement software allowing the receiver to be remotely controlled and perform fully automated tests, including control of accessories. It is supplemented by a report generator that documents EMI measurements and other information such as task description, test procedures used, specific user-defined procedures, and results/graphs from previous measurements.
The R&S ESW26 allows users to exchange the R&S ESW standard hard disk drive for an optional solid-state drive (SSD) that contains only the operating system and instrument firmware, thereby preventing leakage of any confidential data from the lab. It integrates various software packages such as LabVIEW, LabWindows/CVI, and VXI plug & play for remote operation. It is available in an enclosure that measures 462 x 240 x 504 mm and is ideal for mobile and wireless equipment testing applications.
