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EMI test receiver for standard compliant disturbance measurements

Rohde & Schwarz' CISPR 16-1-1 compliant EMI test receiver is designed for the frequency range from 9 kHz to 7 GHz.

The R&S ESCI7 meets the requirements of the current edition of the CISPR 22/EN 55022 standard for information technology equipment, which will be valid from 2010. Starting in October 2010, radiated disturbance measurements up to 6GHz will be mandatory for IT equipment in the European Union. The R&S ESCI7 enables test houses to adapt their services to these future requirements and helps manufacturers to avoid redevelopment effort.

The new EMI test receiver has been designed as a solution for manufacturers who wish to sell products such as computers, modems or printers and the necessary components in the EU. They can detect and analyse radiated disturbance up to 7GHz and check whether their products comply with the future limit values. According to R&S. with the integrated spectrum analyser, the R&S ESCI7 can perform a large number of the standard measurements typically encountered in rf development labs. The receiver can measure phase noise, occupied bandwidth and adjacent channel power, for example, or determine the third-order intercept point.

The R&S ESCI7 has low displayed average noise level (typically 153dBm at 1GHz and 10Hz bandwidth) and a wide dynamic range (1dB compression point of 5dBm).

The test receiver offers the sensitivity required for EMC measurements using low limit values, as defined by the CISPR 22/EN 55022 standard for the frequency range from 1 to 6GHz.

The mixed mode display of the R&S ESCI7 simultaneously shows the rf input signal in the spectrum around the receive frequency, the numeric measurement values and the level bargraph. This display mode gives users a better overview of the spectrum that surrounds disturbance signals and enables them to identify disturbance faster. It also allows more accurate tuning of the EMI test receiver to the local disturbance maximum.

Author
Chris Shaw

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