Protection Features Evaluation

The +12 V rail's OCP is set correctly. However, the minor rails have very high OCP thresholds even though today's PCs only use these rails lightly.

DC Power Sequencing

According to Intel's most recent Power Supply Design Guide (revision 1.4), the +12 V and +5 V rails must have voltages equal to or greater than the +3.3 V rail's output at all times. For our first measurement, we turn the unit off and switch it back on without a load on any of the rails.



All is good here since the 3.3 V rail is always lower than the other two.

EMC Pre-Compliance Testing - Average and Quasi-Peak EMI Detector Results

Electromagnetic Compatibility (EMC) is the ability of a device to operate properly in its environment without disrupting the proper operation of other close-by devices.

Electromagnetic Interference (EMI) stands for the electromagnetic energy a device emits, and it can cause problems in other close-by devices if too high.



Some high spikes with the average EMI detector, but no spurs exceed the limits with the QP detector, which is more accurate.