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Noise measurements

The VIPer122 frequency jittering feature allows the spectrum to be spread over frequency bands rather than

being concentrated on single frequency value. Especially when measuring conducted emission with the average

detection method, the level reduction can be several dBµV.

A pre-compliance test for the EN55022 (Class B) European normative was performed and the average

measurements of the conducted noise emissions at full load and nominal mains voltages are shown in the

following figures.

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STEVAL-VP12201F

Noise measurements

DB4121 - Rev 1

page 3/6