6 Mar
2002
6 Mar
'02
11:13 a.m.
Ethan Dicks wrote:
...
... Guess I'll go back to making the BA11 work
with the
VAX 8300 it's next to (replaced the damaged IC in the T0010 board... now
on to locate the cause of the short that caused the damage in the first
place).
Good luck! Meanwhile, I'll try to get that blown 74123 out of my RX211
(output at pin 13 shows pulse, but inverting output at pin 4 shows no
move, and of course only this one is used) without damaging the board.
I suspect replacing the 74123 with a 74LS123 will change the timing? -
DEC apparently meant it to be quite precise: the capacitors are +/- 5%
types, the resistors even 1%.
--
Andreas Freiherr
Vishay Semiconductor GmbH, Heilbronn, Germany
http://www.vishay.com