AN2242

5 Conducted Noise Measurements (Pre-Compliance Test)

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5

Conducted Noise Measurements (Pre-Compliance

Test)

The following pictures are the conducted noise measurements at full load and 230Vac mains

voltage, made on phase and neutral line with Peak detection. The limits shown in the diagrams

are the EN55022 CLASS B ones, which is the most common rule for video domestic

equipments, such as Set-Top boxes. As clearly visible in the diagrams there is a good margin

of the measures with respect to the limits.

Figure 25. Conducted Noise Measurements - Phase A

Figure 26. Concucted Noise Measurements - Phase B