Teleprint 390

[Tom Jennings]

> From: "Stefan" <birs23 at zeelandnet.nl>
>> I just hooked up my Teleprint 390 to my laptop and it works like a
>> charm, almost 100%. I can type on my laptop and the output appears on
>> both the papertape as typed. And what I type on the Teleprint appears
>> on my laptop but what it doesn't do is when I feed it a papertape
>> output it on the laptop (only parts). It does output it correctly on
>> the Teleprint itself. Any idea's what might be wrong here ?
>> I am not a real technical person but willing to give anything a try :-)

On Tue, 12 Jul 2005, vrs wrote:


> I think it is likely that your 390 is generating two stop bits.  If your
> laptop
> isn't expecting that, it would likely construe the second stop bit as a
> start
> bit and begin looking for the next character.


Sorry, not correct... a stop bit is simply the line sitting in the
spacing state, eg. it's like a pause between characters, so it
will not trip up comm. systems.

It's always safe to have more than one stop bit, though it lowers
the number of characters/second (at 110, you'll hardly notice :-)





I'm a little unclear on your problem, I'll restate for clarity,
correct me if I'm wrong:

** When you type on the tty keyboard, correct characters appear on
the laptop? Absolutely 100% of the time?

** When you run a punched paper tape through the reader, it prints
correctly on the tty, but what you see on the laptop does not
match the tty?