Hi group. I have a couple of old Nixie display counters. A 5214L, and a 5201L. It did take me a while to figure out the '14, but now understand what it does in all its modes. The '01 is similar, but with the addition of a PHA (Pulse Height Analyzer). Can y'all explain this? Perhaps it's just a fancy name for a calibrated trigger circuit?
Michael
