Preset
MXO 3 settings file: channel 1, 150 kHz–30 MHz, RBW 6 kHz, Gaussian window, dBµV, 10 dB external attenuation logarithmic. On the scope: Menu → Save/Recall → Recall, and pick this file.
Download MXO 3 preset (.set)Waveforms
Extra attenuation is added on top of the file (cable, external pad). “Already in scope” is recorded only — do not add it again if the probe factor was on when you saved the .ref.
FFT average and max-hold are not CISPR QP / CISPR-AV. Margins are pre-compliance only.
Violations and top spots
Application
CM / DM check
Clip a Würth snap-on on both mains conductors together (one turn, both wires). Re-save max-hold and average, then upload both. A drop of about 6 dB or more at a peak means that peak was mostly common-mode.
Filter
Libraries
Predicted curve is a first-order estimate (CM choke + X/Y caps) on the uploaded max-hold. It is not a SPICE result. Confirm voltage, current and safety class on we-online.com before you build it.