Pic of the Si-3BG version, and the now standard arrangement. The bottom clip has been moved down all the way to the base, the 900 to 400V converter is simplified, miniaturized, and installed inside the black 3 pin base. This new profile, with its overwrap plastic insulating sleeve (not shown) plugs directly into an unmodified CDV-700 probe housing.
Same basic layout can be modified for the SBM-20 tube by using a longer PCB, requiring a shorter extension at the top, to just the plastic cap. The orange material is Kapton HV tape and secures the Teflon insulated ground wire going to the top clip. The whole adaptor slips into an insulating plastic sleeve when installed into the CDV-700 probe/
