Re: Serial port DCD remaining high (fwd)
Joe Hartley (jh@metheny.brainiac.com)
Tue, 3 Dec 96 23:11:40 EST
> Once upon a time Joe Hartley shaped the electrons to say...
> >The serial port seemed to work OK when I used it as a console port to
> >configure the unit, but turn off the DIP switch, and it's stuck with DCD+.
> >The port's been reset, the unit's been power-cycled, all to no effect.
>
> Plug something into it - a cable with nothing attached even. Sometimes a
> charge accumulates on the pins, and it doesn't take much to flip DCD high.
> Something plugged into the port can drain the charge. I've seen this before.
Well, a bit more detail here - the DCD is high with a cable, without
the cable, with a modem (and null-modem adapter) on the cable, with a
modem off the cable, with the modem on....
My instinct tell me that this unit's ripe for an RMA, but I hope not!
========================================================================
Joe Hartley - jh@brainiac.com - brainiac services, inc
PO Box 5069 : Greene, RI : 02827 - vox 401.539.9050 : fax 401.539.2070
Without deviation from the norm, "progress" is not possible. - FZappa