friedl@vsi.UUCP (Stephen J. Friedl) (05/27/88)
Hi.there,
This is a tidbit of maybe-useful information. Recall those
TRW modular adaptors used by the 3B2? Here is the algorithm for
decoding the part numbers. Follow the path from left to right:
*-----*
*----* /----| 005 |----\
/----| 21 |----\ | *-----* |
| *----* | | |
*---* | MALE | | *-----* |
|232| ----< >---<-----| 006 |----->----
*---* | | | *-----* |
| *----* | | |
\----| 22 |----/ | *-----* |
*----* \----| 010 |----/
FEMALE *-----*
005 = ACU/Modem
006 = TERM/PRT w/o DCD<-->DSR jumper
010 = TERM/PRT w/ DCD<-->DSR jumper
For the terminal printer adaptor, DCD (pin 8) is always
connected, and the 006-vs-010 determines whether there is a
jumper from pin 8 to pin 6.
For example, 232-22-005 is a female ACU/modem adaptor. Hope
this is helpful. Corrections/updates welcome.
Steve
--
Steve Friedl V-Systems, Inc. (714) 545-6442 3B2-kind-of-guy
friedl@vsi.com {backbones}!vsi.com!friedl attmail!vsi!friedl
I'm jeff@unh's brother but I'm not proud of it.