Multi-channel EMI analysis for axle counter systems — full pipeline with calibration, filtering, RMS windows and limit comparison (EN 50238-3 / EN 50592).

Convert scope voltage to current (PEM probes), break down harmonics, and compute the psophometric current per ITU-T O.41 weighting.

Zero-padded FFT (≤1 Hz bins) with 16.66 Hz traction component, aliasing fold-back, THD, and ITU-T O.41 psophometric current.

Standalone EMC post-processing per CLC/TS EN 50238-3 / EN 50592 — Table A.1 detector limits, per-channel Pass/Fail emission graphs, PDF/Word report.