12 Nov
2005
12 Nov
'05
1:49 a.m.
of the electronics? There are two cards, with
standard TTL and analog
parts. The printed circuit has a design date of 1985, while the IC's have
88-89 dates.
One thing I forgot to mention in my last message. Get a good continuity
tester. 'Good' means one that is not fooled by diode junctions (and
preferably not by low-ish resistors), one that doesn't supply enough
voltage or current to damage anyting, one that beeps, and one that beeps
quickly (you want to be able to 'stroke' a probe along a line of pins to
see if a given connection goes to any of them).
The continiuty beeper in my old Fluke 85 is fine, for example.
-tony