Xref: utzoo comp.misc:9466 comp.periphs:2998 Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!cs.utexas.edu!usc!snorkelwacker!spdcc!merk!alliant!linus!nixbur!nixpbe!peun11!josef From: josef@nixpbe.UUCP (Moellers) Newsgroups: comp.misc,comp.periphs Subject: Re: A tale of two little green boxes... Message-ID: Date: 9 Jul 90 06:07:41 GMT References: Sender: news@nixpbe.UUCP Followup-To: comp.misc Lines: 69 In es2a+@andrew.cmu.edu (Eric Stuyvesant) writes: >Hello. >Does anyone out there know what either of the following is? > -> A green metal box, 35mm deep, 22mm wide, and 11 mm high, with the > following LEDs on the front: > BA BB CA CB CC CD CE CF 1 2 PWR > and the following chrome switches below the LED array: > 1 | LOC | XMT | REM | (Where a | is a 2-position > CH | TEST | REV | TEST | up/down | toggle switch > 2 + + + + + > On the back, there is a female DB9 labelled J2, a momentary pushbutton > switch labelled ANS MODE, and a female DB25 labelled J3. > There is room inside for 2 slots, the lower of which is occupied. > -> A similar green box of the same dimensions with the following LEDs > in the faceplate: > TXD RXD RTS CTS DSR DTR RI CXR 1 2 PWR > And the following chrome switches below: > 1 | ALB | XMT | DLB | > CH | | REV | | > 2 + OFF + OFF + OFF + > Inside, it looks similar to the first, but both slots are full. The top > slot has a female DB9 and a female DB25 coming out of the back. The > bottom slot has the same female DB9 (J2), Momentary switch (ANS MODE), > and female DB25 (J3) as in the first box. > Both boxes were manufactured by The Vadic Corp., and date from the early >seventies. My guess is that box #2 is some sort of serial line amplifier >or converter, or some such. I have no idea what #1 is, but given the general >construction similarity to #2, I can surmise it has something to do with >serial as well. >Any information is appreciated on the nature of these two boxes. Speculation >encouraged. E-mail please. >Thanks in advance. >-Eric Stuyvesant >es2a+@andrew.cmu.edu >Go MEMS! Looks pretty much like a modem to me! The BA BB CA CB CC CD CE CF refer to the RS232 names of the signals TD RD RTS CTS DSR DTR RI DCD The ANS MODE would probably toggle between oroginate and answer mode. Hope this helps. -- | Josef Moellers | c/o Nixdorf Computer AG | | USA: mollers.pad@nixbur.uucp | Abt. PXD-S14 | | !USA: mollers.pad@nixpbe.uucp | Heinz-Nixdorf-Ring | | Phone: (+49) 5251 104662 | D-4790 Paderborn |