> On Aug 24, 2016, at 12:21 PM, Rob Jarratt <robert.jarr...@ntlworld.com> wrote:
>
>> Incidentally, the terminal and the machine *were* plugged into different
>> sockets, but now they are connected to the same wall socket and the
>> problem persists.
>>
>
>
> Actually, since connecting terminal and machine to the same wall socket, the
> garbling seems to have much reduced, but I do get lots of dropped characters
> all the same.
Check that the shield ground and signal ground are both connected. If they
are, then the fact that it depends on power suggests your RS232 interface is
inadequately designed.
paul
