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From: #PSWHER@WMMVS.BITNET
Newsgroups: comp.sys.handhelds
Subject: HP48SX serial cable
Message-ID: <9003220457.AA06189@hercules.csl.sri.com>
Date: 22 Mar 90 05:00:52 GMT
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For those of you who are waiting to get your hands on a cable for the weird
serial connector on the HP48SX, here's an idea for you.  If you have access
to one of those little RS232 breakout box/test set gadgets, it's quite easy
to make the jumper wires fit over the connectors on the 48SX.  If you're
hooking up to a PC's serial port, here's how to configure things.  Note
that pin 1 on the HP48SX is the leftmost pin when looking into the connector
as the calculator sits upright on a table.

HP48SX                        PC
pin 1                         pin 1
pin 2                         pin 3
pin 3                         pin 2
pin 4                         pin 7

If this doesn't work for you, try passing pins 2 and 3 straight through rather
than reversing them.  (Also note that the PC connections assume a 25-pin
connector; I haven't tried this with a 9-pin connection).

Phil Wherry
#pswher@wmmvs     (bitnet)
psw@mitre.org     (internet)