DEC Rainbow / Pro video on VGA monitors?

[Paul Anderson]

I have a few VR201 boards I might let loose.  I don't want to sell any
monitors until I fell off the DECMATES , Rainbows, and Pros.

Paul

On Sat, Jan 19, 2019 at 12:57 PM Warner Losh via cctalk <
cctalk at classiccmp.org> wrote:

> Greetings,
>
> I'm trying to find a way to get my DEC Rainbow's monochrome output onto a
> newer monitor than my aging VR201 (especially since I zapped something in
> it and my diagnostic efforts to date haven't fixed it).
>
> So, I found the bit in the Rainbow docs that said the output was DC Coupled
> RS-170 signals and to convert to RS-170 (NTSC black and white) I needed to
> put a 10uF cap inline to make it RS-170. So I did this, and fed it into a
> generic NTSC composite video to VGA thing, and got only a little joy. The
> first few lines seem to be missing, then the next few are OK and then
> nothing else.
>
> I tried to google this, but found nothing. My google foo has failed me.
>
> Does anybody else have a working setup?
>
> Warner
>