For electrical field strength emissions measurement Gauss Instruments has introduced a novel real-time scanning feature for its TDEMI X test receiver series providing several gigahertz real-time bandwidth. This option– QCDSP-UG, UFSPA-UG – means that the final maximization can be performed at all frequencies simultaneously in just one step.

Due to the newly designed powerful hardware module, such measurements over several gigahertz can be performed in the real-time spectrum analyzer mode – e.g., in the frequency range from 1 GHz to 6 GHz all frequency points can be directly measured with a very high resolution in time and the result can be maximized instantaneously. Over the whole frequency range the results are shown in real-time. The detector’s peak, average and RMS values are available in this mode. Further, the video bandwidths, which are required according to the standards, can be applied. Of course all the measurements comply with the CISPR 16-1-1, MIL461, DO160 standards as well as national and international standards.


For the first time, for a typical emission measurement in the range of 1 GHz up to 6 GHz the full frequency range is scanned in real-time with the TDEMI X test receiver. The DUT is rotated in just one continuous movement and the direction as well as the maximum level of emission is recorded. All the requirements of the CISPR 16-2-3 standards as well as the ANSI and FCC standards are fulfilled by the TDEMI X receiver.

Thus, challenging measurement tasks, for example the measurement of microwave ovens, can be performed in a very fast and efficient way, which is easy for the operator. The pre-selection, which is applicable over the entire frequency range of DC – 40 GHz in all operation modes, e.g. in particular in the real-time measurement mode, allows, for example, the measurement of the signal harmonics of an ISM band with highest precision as well as dynamic. With the standard deviation, which is typically 0.27 dB for the frequency range from 1 GHz up to 18 GHz, the TDEMI X is claimed to be setting the benchmark regarding the measurement accuracy of EMI test receivers.

All the operation modes of a DUT can be measured in a simple and highly efficient way. A former time-consuming pre-scan and final scan test strategy is no longer needed. Also the evaluation against the limit lines as well as the documentation of the measurements are performed fully automatically by the integrated report generator module and stored as an MS-Word document. Via remote controlled software it is also possible to fully automate measurements including controlling turntable and antenna masts and create test reports including radiation patterns of the DUT.