[GreenKeys] Teletype ASR33 Connections - help please

[gfmurphy at earthlink.net]

Hi Alf:  You have a Private Line version Model 33.  It runs on current
loop signals.  For a wiring diagram for this set, go to:

http://www.hertzmail.com/TTY/TeletypeManuals/Model32-33/WD/model33_line_set.pdf

Eugene Hertz has been kind enough to provide this resource on-line.  Your
point of focus will be the terminal strip where the power and signal lines
terminate.  Look on the bottom left of page 11 and you will see the terminal
strip that is designated X.  Looking at the connector, it appears that there
is only a send pair and a receive pair.  That should make things simple.
Good luck with your project.  Regards,  Jerry Murphy


-----Original Message-----
>From: Alf Fisher <alf_fisher at tiscali.co.uk>
>Sent: Aug 2, 2008 3:07 PM
>To: Greenkeys <GreenKeys at mailman.qth.net>
>Subject: [GreenKeys] Teletype ASR33 Connections - help please
>
>Hi guys,
>I have a Teletype Model ASR33 and would like to know what interface it is 
>fitted with so that I can connect to it and make it work again.
>
>It has a 44 way connector on the end of the signal cable and used to work 
>with some kind of mini computer - possibly DEC based.
>
>Thanks to Sam Hallas, there are now four pics on his website at 
>http://www.samhallas.cwc.net/greenkeys/ showing a side view of the machine, 
>the driver board and the signal cable connector.
>
>There is a group of 8 or so square nylon connectors at the back of the 
>machine but I haven't yet identified which connector goes where.
>If someone can tell me whether it is an RS-232 or current loop interface and 
>which pins of which connector to use, it would be much appreciated.
>
>Many thanks.
>
>73
>Alf
>G3WSD
>
>
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