Dear Larry, Tony
The "Bed of Nails" is
a C004 32-port crossbar switch whose data sheet (including
pinout) you can find at:
Not everyone wanted a
C004, and it's possible that, at the time we designed the B008,
the C004 was not in production, so the 84-pin array was a way
for users to construct their own link network without having to
bother with configuring the C004.
Lifting the pin array
should not cause any damage, but I don't think you will see very
much underneath it.
On 20/11/2017 17:54, Lawrence Dickson
TRY AGAIN AFTER REDUCING SIZE OF ATTACHMENTS . . . sorry if
some of you get it twice . . .
Thank you, Tony! I guess RS-422 could do a link
because it is capable of 10 Mbits/second according to
Wikipedia. But that still leaves the bed of nails a mystery
(what did it replace)? Peering under the TRAM-like thing
(which I am afraid to pull because it may have some essential
connection with the wire wrap on the bed of nails) I see IMS
B008 221-CRBD-302-05 dated 1990, which seems to fit page 3 of
my User Guide (also dated 1990), except for CRBD instead of
CBRD. But surely the bed of nails is not standard.