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Thread ID: 24189 2002-09-05 06:50:00 Unisys Monitor & 15 to 25 pin converter Nigel Thomson (629) Press F1
Post ID Timestamp Content User
76644 2002-09-05 06:50:00 I have recently aquired a Unisys monitor, its about 10 years old, and I am trying to work out where I am supposed to plug the monitor to computer cable in to, at the back of the monitor are 4 25 pin slots one is labeled as printer so I can rule that out the other three are labeled
Data U TDI
Data U RS232
Data T RS232
my guess is the TDI (Terminal data interface??) but there again searching on google TDI has something to do with TC/IP so could someone please help!

Second bit is there such a thing as a 9 pin to 25 pin converter cable as i don't have one yet, I am fairly sure I saw plenty of them around 10 or so years ago but I don't seem to be able to find any at the moment.
Nigel Thomson (629)
76645 2002-09-05 07:00:00 I have a feeling this 9 pin is serial at best, could be hercules if you are lucky.
I really do not like your chances of it working.
robo.
robo (205)
76646 2002-09-05 07:00:00 I think that what you have there is a terminal , not a monitor. Try a COM port. It should have a keyboard connector (either a "phone" style, or maybe that TDI connector).

The 9 to 25 cables (and adaptors) are still available. They are serial cables, and you probably need a null-modem one, if you want to use this unit.

BTW, a lot of the Unisys (Burroughs) equipment used EBCDIC code, not ASCII ... which can be a problem. IBM did a lot of that too --- I had one OS/2 documentation file which was in EBCDIC.
Graham L (2)
76647 2002-09-05 07:18:00 My apologies, I should have said a 15 pin to 25 pin converter cable, I think it may be a terminal as i picked it up from a clearance and all the other "monitors" were most definitly terminals although this one looked like a fairly normal monitor.
I have used the FCC number to find that it is VGA and made in Korea in 92 but I cant find anything about the EBCDIC factor so Fingers crossed it won't be a problem, Thanks for all the help so far.
Nigel Thomson (629)
76648 2002-09-05 07:34:00 I don't think that you will find a DB15HD (vga) pin to DB25 cable, and I don't think it will help . The fact that you have 4 DB25 connectors indicates to me that you have the whole electronics of a terminal inside the monitor case . The missing part is a keyboard( which will not be a "standard PC keyboard") .

A terminal is a serial keyboard/text display unit . It is a replacement for the old Teletype console . This one can have an attached printer, and perhaps the capability to connect to two (mainframe style) computers . (This configuration was common on the later DEC terminals (VT200 and later) . Its only mode of communication will be RS232 --- it won't be able to take and display video from a PC card . You might be able to get inside and modify it to use only the video monitor, but locating the appropriate connections can be tricky .

You can check by turning it on . It will go through a self test routine, and probably complain about the missing keyboard .
Graham L (2)
76649 2002-09-05 07:50:00 I do have the keyboard and have just plugged it in and turned it on, and you are right it is a terminal, which is a shade depressing as I really needed a monitor, oh well back to hunting for a "bargain" on trademe. thanks heaps
Nigel
Nigel Thomson (629)
76650 2002-09-05 12:52:00 I got a cheap 15" Unisys monitor for $80 from our local PC chop shop. So far so good (fingers crossed and touch wood and rub the buddah) SoniKalien (792)
76651 2002-09-06 01:01:00 TDI = 2 wire direct interface a unique to Burroughs / Unisys connection protocol. It is not RS232 compatible. Stuart R (950)
76652 2002-09-06 05:02:00 ?DS1326

Anyone else remember MCP? ?PR99 was nice ...
Graham L (2)
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