Hi,

You could make yourself a HV Divider with the 10 MegOhm (or whatever Volt-Ohms input impedance of your DMM and few 10 MegOhm series resistors. Be sure you ues wire that will support the withstanding voltage. Just scale the output per the voltage divider value.

Ross
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In SI, a little termination and attention to layout goes a long way. In EMC, without SI, you'll spend 80% of the effort on the last 3dB.