OK, so under 10kHz, you measured an impedance floor of: ~20mOhm for 1m RG316 (no GND isolator) ~11mOhm for 1m PDN cable (no GND isolator ~0.174mOhm for 1m PDN cable (with SS isolator) Very impressive - thanks!

Yes makes sense. So a GND isolator can take you so far, but you can bring your impedance floor down further by reducing the impact of the Rshield? I take it the most important side for Rshield is the port1 connection, as that's where most current flows? At what impedance DUT would you say that PDN cables become necessary? That's for a 2-port shunt thru measurement with a BODE100 and a J2102B?

Thanks for this. So the model on p18 of that paper shows 3 mutual inductances, which combine to create a frequency-dependent CMRR? I'm glad I took the time to study this. It was tempting to skim the paper when I looked before. Am I the only person who gets excited about coax cables? Physics in action, and a piece of history!

Very interesting, and very impressive. So there's no defined slew-rate? Just a switch-on time of (guessing) <1ns? Slew-rate specification is actually a problem for us. When a fast accelerator-core changes state and starts pulling current, it can happen in 1 clock cycle. I'm going to talk to the rest of my team about this - I'll be in touch. Thanks, - Brendan

Thanks for this. Is the PicoSlammer available as a product yet?