The first digital scope I ever used was a 2430A. New in Dec '89. It had the Tekmate 2402 add-on PC module for I/O. I used this a lot working on my BSEE thesis in '91. I much preferred the way the cursors moved with the knob adjustments over a later TDS420 and many later an current scopes I have had to use in the past 30yrs.
