ASR33 Teletype interfacing

From: Joe <rigdonj_at_cfl.rr.com>
Date: Sat Oct 11 13:18:53 2003

Fred,

  I tried to access the website and got an error stating that it could not
be found. I tried to access the domain itself and I got an error stating
that it's not configured yet and to try again later.

   Joe


At 07:19 PM 10/11/03 +0200, you wrote:
>On Sat, 11 Oct 2003, Ian Primus wrote:
>
>> > If you want to receieve also, you can use another transistor and
>> > resistor to pick off the change in loop current that happens when you
>> > press keys which open the loop, and drive the serial port.
>> >
>> > I've done one of these fairly recently, and if poked with a
>> > not-too-sharp stick, I'll scan the schematic and pu on my website.
>
>I found a 20mA interface schematic in my pile of docs.. I put it
>up on http://www.pdp11.nl/Hardware/20mA.pdf
>
>Cheers,
> Fred
>--
>Fred N. van Kempen, DEC (Digital Equipment Corporation) Collector/Archivist
>Visit the VAXlab Project at http://www.pdp11.nl/VAXlab/
>Visit the Archives at http://www.pdp11.nl/
>Email: waltje_at_pdp11.nl BUSSUM, THE NETHERLANDS / Sunnyvale, CA, USA
>
>
Received on Sat Oct 11 2003 - 13:18:53 BST

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