On 4 Jun 2003, David Holland wrote:
> I finally got desperate enough to pull out a RS-232 break out box, and a
> scope. (Plus a couple of dweebie basic programs) What I find is the
> Apple serial communications looks like its running at about +/- 4v.
> (This is on the builtin modem port. I can't get a SSC to work either.)
> (The waveform also appears to have a fair amount of ring on the voltage
> swings, but that may be normal)
>
> I'm guessing that the +/-4volts isn't enough for my PC to recognize it.
Have you tried a different cable?
--
Sellam Ismail Vintage Computer Festival
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Received on Thu Jun 05 2003 - 00:05:01 BST