Path: utzoo!attcan!uunet!vsi!friedl
From: friedl@vsi.UUCP (Stephen J. Friedl)
Newsgroups: comp.sys.att
Subject: TRW modular adaptor codes
Message-ID: <692@vsi.UUCP>
Date: 26 May 88 22:58:43 GMT
Distribution: comp
Organization: V-Systems, Inc. -- Santa Ana, CA
Lines: 35

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.