>
> Can someone help me understand these old HP
schematics?
> I see the 15 adapter pins shown at the top right of
the
> page, and see where one of the pins (# 5) appears to
go
> to something labeled EIA IN on the "Logic Mother
Board"
FWIW, 'EIA' was commonly used at that time (particularly by
HP) to mean
what we'd normally call 'RS232;
> section. Some pins (3, 4, and 6) appear to not be
> connected to anything. Most of the others seem to go
> to the Analog Mother Board, but I am not sure how to
> follow them from there. What would be nice is if I
Given the one sheet of schemaatic that I've seen, you can't.
You need
detailed schematics of the motherboards to trace the signals
to pins on
the plugin cards (I assuem) and then scheamtics of the
approprtiate cards
to see where they go in the 'real' electronics.
Do you have that information?
-tony
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