I have an old HP 7978 magtape drive with two lovely servomotors
I guess about 6" diameter and 8" long. The P/S and drive hardware
is separated in the box from the control electonics, joined by a
flat ribbon cable.
To re-use the servo gear, I'd like to know what signals get sent
down that ribbon. Can anyone suggest a way of finding out (that
doesn't involve hours with a meter and CRO)?
18 years ago