Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!uwm.edu!uwvax!jomby.cs.wisc.edu!kolstad
From: kolstad@jomby.cs.wisc.edu (Joel Kolstad)
Newsgroups: comp.sys.handhelds
Subject: Re: <None>
Message-ID: <1991Feb13.014341.19845@spool.cs.wisc.edu>
Date: 13 Feb 91 01:43:41 GMT
References: <9102120503.AA47999@slate.Mines.Colorado.EDU>
Sender: news@spool.cs.wisc.edu (The News)
Organization: U of Wisconsin CS Dept
Lines: 40

In article <9102120503.AA47999@slate.Mines.Colorado.EDU> sreese@slate.Mines.Colorado.EDU (L. Scott Reese) writes:
>>From: U46837@UICVM.uic.edu
>>Subject: CONNECTORS
>>Message-Id: <1845C780200006C0@gacvx2.gac.edu>
>>Status: R
>Lines: 23
>
>>To Franklin Wang and others troubled with connectors, get a DIGI-KEY
>>catalog.  Just dial 1-800-DIG-IKEY and ask for one.  They supply all
>>kinds of connectors including a "4-conductor, single row inline with
>>0.1" on center distance between pins" model, just what you would need
>>on the HP48 end of the wire I/O cable.  I don't have the specific part
 
[etc.]

>3M also has the same type of connector available in their catalog.  I

Sigh...

After over a year now, it's too bad that people still go around passing out
this kind of information.

The serial connector on the HP-48 is on METRIC spacing.  NOT SCREWED UP
AMERICAN SPACING!  The pins are .5mm square, on 2mm spacing.  This is
not the same as american .025" square, .1" spacing. 

For those that care, 2mm is .079" -- smaller than .1".  That means that using
a .1" connector will spread your pins, and isn't as reliable as a 2mm
spaced connector.  OK?

Fujitsu makes 2mm connectors, and I believe DuPont does too.  The problem is
that the 2mm connectors are extremely tiny -- if you can a HP cable, take a 
look into it.  See the tiny black plastic part of it in the center or the
cable?  That's how big just the connector alone is...

Ian Frechett is attempting to make outer shells for the tiny connectors.

						---Joel Kolstad
						kolstad@jomby.cs.wisc.edu
						kolstad@cae.wisc.edu