This takes the scope probe accessory described previously, and repeats the measurements with a higher frequency oscilloscope (>350MHz) and higher frequency probes (250MHz). The results are even more impressive at higher frequencies.
I’ve recently had to debug several scope’s 2kV-3kV HV supply and the CRT’s Z-axis waveforms at 2.5kV. So far I’ve got away with using a homemade 1000:1 voltage divider and a multimeter. Since that is crude and not particularly safe, I’m not going to mention the details in order to avoid someone apeing me and hurting themselves.
Then, at a recent auction I managed to pick up:
- a 40kV meter for measuring 17kV anode voltages, but which barely registers 2kV
- a Tek P6013A 12kV 1000:1 100kHz scope probe
The probe was functional but missing part of the handle. While not strictly necessary, I wanted to have a little fun fabricating the missing part…