LCD fragment of electromagnetic compatibility test receiver analysis

Rohde & Schwarz announce new EMI option for the FSW signal and spectrum analyser

Published: 14th May 2013

Rohde & Schwarz have announced a new measurement option for the FSW signal and spectrum analyser. With the new K54 software option you can optimise the EMI performance of your products as early on as the design phase, saving you valuable time on the way to final EMC certification.

The new K54 option supports EMI bandwidths in compliance with both commercial and military standards. In order to analyse disturbances, the option contains EMI detectors such as peak, quasi-peak, CISPR-average and RMS-average in line with CISPR and MIL standards.

It also includes a database of predefined limit lines as specified by international standards, as well as correction factors (transducers) for typical measurement tasks. The limit lines and transducers can be modified to match customer requirements and EMI accessories.

With the EMI option you can optimise shielding design features (eg in devices or components) making it easy to test how design and circuit modifications will affect EMI performance.

To reliably capture all disturbances, the FSW uses a high maximum number of sweep points – 200,001 -- for this application. Up to six traces with different EMI detectors can be active at the same time. A maximum of 16 separate markers analyse any disturbance that may be present. The instrument displays measurement results on either a linear or logarithmic frequency axis.

The spectrum display using a logarithmically scaled frequency axis makes it easier to diagnose results and also allows limit lines to be displayed in conformance with standards.

Amplitude and frequency-modulated signals can be demodulated using markers, which are then output to speakers / headphones via the audio channel to help clearly identify disturbances.

Rohde & Schwarz also offer the Windows-based R&S ES SCAN EMI software for the remote control of simple, automatic EMI tests. This software records measured data, analyses it and documents the results.

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