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I've recently acquired a Tandy 1000 EX. It appears to have a 9 pin RGB video out and I understand it produces a CGA signal. I would like to connect this output to my SCART switcher, which is connected to my Sony PVM via RGB+sync cable. Is it possible to convert the output from the Tandy 1000 EX to SCART?

I found this active converter:

https://www.serdashop.com/CGA2SCART-PRO

Seems like this might work, but I'm not 100% sure. So far my research leads me to believe there is nothing passive that will convert the signal to SCART.

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    You are aware that SCART is not a single interface to be converted to, but a plug carrying various alternate interface? You may need to specify which of them you need - eventually the one the CRT to be used expects.
    – Raffzahn
    Jun 20, 2021 at 19:35
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    I think that CGA2SCART device would work connected to an appropriate SCART to Sony PVM monitor cable. You are just converting digital RGBI to analog RGB. I don't do this myself because my PVM includes the RGBI input, as well as the analog RGB.
    – Brian H
    Jun 20, 2021 at 20:39
  • Related question: retrocomputing.stackexchange.com/questions/5609/…
    – snips-n-snails
    Jun 21, 2021 at 19:14

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It would seem that a 1 to 1 mapping between RGB (CGA) connectors and SCART is not possible and therefore passive adapters are not available. There are open-source schematics to help make this conversion, such as this one:

https://www.electroschematics.com/cga-scart-adapter/

However, it's my understanding that this does not 100% accurately map colors.

Ultimately I decided to purchase the CGA2SCART PRO device previously mentioned. It claims to handle proper mapping of color ("brown fix") and I don't have to soldier, so that's a bonus.

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