Re: Data from a serial port
On Sat, Oct 4, 2014 at 5:52 AM, Jerry Stuckle <jstuckle@attglobal.net> wrote:
> On 10/2/2014 8:24 PM, Ethan Rosenberg wrote:
>> [...]
>
> In addition to Dan's comments - is your cable OK? Do you need a
> straight-through cable or a cross-over cable? Does the terminal
> require/honor DSR/TSR and RTS/CTS? If so, are these lines active?
>
> You may need a breakout box on the cable to see what's happening on the
> lines.
If, for some reason, you can't get a breakout box, you may be able to
do basic tests on the cable with a multimeter (ohm-meter or
connectivity function), the pin diagrams, some patience, and maybe an
extra pair of hands (if you can't find small-mouth alligator clips or
pin clips). Just don't tell whoever handles requisitions/budget unless
they understand that patience costs time and money when doing things
like this. You have to be really careful to keep the leads from
slipping, and not noticing a slipped lead can cost hours of
unnecessary work.And there are tests you really don't want to try
without a breakout box or the equivalent.
--
Joel Rees
Be careful where you see conspiracy.
Look first in your own heart,
and ask yourself if you are not your own worst enemy.
Reply to: