EMC Pre-compliance

HT06 (5-piece set): includes large/mid/small loop magnetic probes, E-field probe and needle tip probe, suitable for P1→P5 graded troubleshooting — P1 whole-unit rough locating, P3 device-level locating, P5 pin-level mm precision. HT08 (6-piece set, 9kHz–7GHz): additionally covers 9kHz low band for switching power supply harmonics; 4 magnetic + 2 E-field probes, balancing low-frequency conducted and high-frequency radiated, suitable for wider EMC baseline surveys.

Use SA8T or SA12 as receiver, Max Hold to accumulate peak across sweeps, spectrogram to capture intermittent transient interference. For full-band rough sweep set RBW 300kHz, 0dB attenuation for sensitivity; after locking suspicious frequency narrow Span to ±5MHz for precise sweep.

Switching power supply EMI, high-speed digital board clock harmonics, chassis shielding gap leakage, cable common-mode radiation, RF module leakage etc. Compare peak changes before/after rework with same probe under comparable conditions to verify shielding or filtering effectiveness.