THE DESIGN BRIEF

You're debugging conducted emissions on power lines? Set up your LISN for 1 kHz–1 GHz sweeps, not just the typical 150 kHz–30 MHz window. MIL-STD-461G Revision G pushes CE102 conducted emissions testing across this full range, and I've been using it for commercial designs that keep failing at the margins of CISPR limits.

Your switching regulators are probably clean at 1 MHz but watch what happens around 800 MHz–1 GHz. The military spec catches resonances that CISPR 32 misses entirely. Rule of thumb: if your CE102 delta is >6 dB above commercial limits anywhere in that 1 kHz–1 GHz span, you'll fail when temperature shifts move your fundamental.

• • IEC 60601-1-2 Edition 4.1 (2021 amendment) adds risk management for essential performance — your device can't just survive EMI, it has to maintain clinical function
• • UN/ECE R10 and CISPR 25 automotive limits remain unchanged, but integration with ISO 11452 immunity testing is tightening up
• • CS116 damped sinusoidal transients on power leads: 2.5 kV peaks with 160 ns rise time — your TVS better clamp under 50 ns
• • Medical radiated emissions now include harmonic distortion per IEC 61000-3-2 alongside CISPR 11 limits

• • IEC 60601-1-2 professional healthcare immunity levels diverging further from residential — expect 10 V/m field strength requirements

Have you pushed CE102 testing beyond 30 MHz on commercial products? Reply with what you found above 100 MHz — I'm collecting data on where CISPR limits miss real-world noise.

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