Path: utzoo!censor!geac!torsqnt!lethe!yunexus!ists!helios.physics.utoronto.ca!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!hplabs!hpfcso!rrd
From: rrd@hpfcso.HP.COM (Ray Depew)
Newsgroups: comp.sys.handhelds
Subject: Re: Casio SF-8000 pc-link problem
Message-ID: <7360049@hpfcso.HP.COM>
Date: 22 Jan 91 16:26:11 GMT
References: <91021.213540TTL-JJK@finou.oulu.fi>
Organization: Hewlett-Packard, Fort Collins, CO, USA
Lines: 17

From comp.sys.handhelds / TTL-JJK@finou.oulu.fi (Jari Kaitera) :

>I have a strange problem with my computer (386-33MHz) and the data-link.
>I can not get the link to work with my computer. 

>Jari Kaitera, Univ. of Oulu, Finland
>ttl-jjk@finou.oulu.fi

Is the computer that "doesn't work" a portable or laptop PC?  Many laptop
machines, since they run off battery power, look for a strong (at least 5
volts) signal on the serial input line, and therefore they never see any
input or acknowledgement from the 48.  Desktop PCs, on the other hand, are
more forgiving, and can pick up the 48's low voltage signal just fine.


-- Ray 
rrd@hpfitst1.hp.com