On Sun, 12 Jul 2015 18:41:57 -0700, jurb6006 wrote:

To say the least, this is not enticing me to buy one. One kilohertzz
square wave at 400 mV amplitude positive going, with a scope freewheeled
into sync and DC coupled. The most effective lytic checker in the world
once you lern to read it.

Hmmm. Your device is still going to switch on low barrier height diodes
like Schottkys and whatnot at that voltage level.