On Wed, Jan 18, 2006 at 07:28:05PM -0000, PeterElliot wrote:
> Another issue is that some low power devices used a scavenging
> technique to pull power from the unused lines to generate the voltage
> used for their serial output.
>
> Have you tried putting a scope on the output from the PDA to see if
> you are getting valid RS232 voltages?
Interesting. I had planned on hooking up a scope, just haven't had the
time lately to work on this problem. I'll post what I discover with the
scope.
I haven't worked with RS232 in a long time but I'm sure it is supposed
to work at TTL levels. But, how about 3.3-V? Is 3.3-V all that is
available on the TS? Time to do some research. If this indeed is the
problem, does anyone know of a solution? Am I the only one trying to
connect a low power device to the TS?
Thanks,
Mike
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