Pocket EMC Debug Probe V2

This is a guide for the assembly and use of the Version 2 “Pocket EMC Debug Probe” from Unit 3 Compliance.

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Assembly Guide

Components required:

0805 resistors for R1 = 470R and R2 = 10k, gives 450 ohm parallel combination. This is required for the 10:1 into a 50 ohm input.

0805 capacitor C1 470pF to 10nF, C0G/NPO dielectric, 50V. For the AC coupling of the signal.

Sourcing SMA edge mount female connectors (RS, eBay)

Recommendations for the probing pin (socket strip or a bit of wire)

Suitable ferrite cores for the current transformer

90 degree options for the B-field loop probe and E-field capacitive probe (on E-field probe snap off – scrape copper on each side of slot before you snap off the end to enable soldering)