[GreenKeys] shockingly basic question - Teletype Model 33 ASR

William Wuttke wcwuttke at att.net
Sun Jan 31 15:16:19 EST 2021


Hi Andy,

If I remember correctly, there are wires on the left side of the keyboard that can be reconfigured for 8N1. I think the
wiring diagrams give the strapping options.

Bill

> On Jan 31, 2021, at 12:09 PM, Andy KN4UCL <kn4ucl at gmail.com> wrote:
> 
> Hello folks, I use the excellent Mike Douglas (deramp) RS232-Model 33 converter on both my two 33s for a good while now. Typically connecting to Linux using some old Keyspan Serial-USB hubs, with my set up being 7E2/110.
> 
> I've been tinkering around with some old Equinox ELS-16 Terminal servers (which are nice because they support 110 baud), but they seem to prefer 8N1 despite sporadic "spelling errors" (for example, Es sometimes become As, etc.)
> 
> Anyway my question is - are the Teletype 33s physically "configurable" in terms of stop bits and parity? Is there a simple way for me to check?
> 
> Searching the interwebs I've found people talking about their Teletypes configured to run at the host end as 7E2, and some at 8N1.  
> 
> Thanks for any help!
> Andy
> 
> 
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