Step 3, Cloud Computing Assisted EMC compliance

Assume EMC standard lab test shows a equipment already achieves EMC compliance, the objective is to confirm, upon the equipment is modified for improvement or update purpose, the modified EUT still remains EMC compliance, following below steps:

I.have the original equipment as “reference EUT”, and set the signal tested at the power input port of the “reference EUT” as “Reference Signal, RS";

II.have the modified equipment as “EUT”, and set the signal tested at the power input port of the “ EUT” as “Signal Under Analysis, SUA";

III.evaluate the EMC status of RS and SUA by "EMI evaluation" of this system. If all peak values of the SUA spectrum are equal to or lower than corresponding peak values of the RS spectrum, the modified equipment is still EMC compliance. Or

IV.if the value of a peak of SUA spectrum is higher than the value of corresponding peak of RS spectrum, modification on the SUA for EMI reduction is required until all peak values of the SUA spectrum are equal to or lower than corresponding peak values of the RS spectrum.

Assume EMC standard lab test shows a new equipment’s EMI value of specific frequency exceed the standard, following below steps:

I.Setup Reference EUT and signal

II. EMI locating

III. EMI reducing

IV. EMI evaluating

V.Standard EMC test

TIP:

●during EUT test, switching off EUT power, and making measurement at the same test point with the same oscilloscope sampling frequency under the same environment, and uploading the measurement result to cloud and analyzing with this system, can obtain environment noise of the test point.

●Please ensure all the EUT measurement be made under the same environment with the same sampling frequency setup of the oscilloscope.