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mpatoray
July 12th, 2007, 07:52 PM
HI,

I am looking for an RGB cable for an IIgs that connects to a Sony KV-1311CR RGB monitor/TV. I have no idea of a part number, Or if someone could provide me with a 34 pin IDC style connector that snaps together and has pins to insirt like a D-Sub connector (saw a drawing in the manual of my KX-2501A, but have never seen one of these in real life).

Thanks,

Matt

david__schmidt
July 13th, 2007, 04:26 AM
You probably won't find one ready-made. Here are references to pinouts of your KV-1311CR:
http://groups.google.com/group/bit.listserv.coco/msg/a0b5a0519b50546c?dq=&start=150&hl=en&lr=&ie=UTF-8&output=search
http://www.the-nextlevel.com/board/archive/index.php/t-7615.html
And of course the IIgs RGB pinout is well-known:
http://home.swbell.net/rubywand/R023PINOUTS.TXT
This fellow sells an IIgs-SCART cable, and has pinouts as well:
http://vintageware.orcon.net.nz/apple2/scart.html

Geo3
July 13th, 2007, 06:00 AM
Hi,
I made one years ago. Have the pin outs to it somewhere. There was a couple of 1/8 watt resisters that you had to put in line with it. It worked great, just did not look as good. The 50 pin header was the hardest thing to get. You might be able to use an old SCSI cable for the one end.
Redmen Cable should be able to make you one. If they have the pin outs and the resistors. But it would not be cheap figure on $35.00 and up.
Leave me an Email with your Email. Have to get out a few other Apple II things together and out into the mail first.

Take care

carlsson
July 13th, 2007, 06:16 AM
The resistors probably are there to lower the voltage from TTL to 1Vpp. I have done that myself (on other systems). You can calculate exactly which resistance you need, but I think somewhere around 200-600 ohm per signal should be fine. I used ~470 ohm to reduce 3.6V to < 1V on my BBC Micro.

Edit: Or maybe not. The page describing how to build a cable says the red, green and blue signals can be connected directly, so they should already be of the right voltage. There is a 270 ohm resistor to generate the signal to select RGB mode in the SCART cable though.

facattack
July 21st, 2007, 02:10 PM
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Geo3
July 21st, 2007, 04:34 PM
The Sony has a believe a 50 pin header and DB 15 at the other end. Mine does. Still have not found the sheet witht the print out.