DEC Rainbow / Pro video on VGA monitors?

[Warner Losh]

On Sat, Jan 19, 2019 at 2:38 PM Paul Koning <paulkoning at comcast.net> wrote:

>
>
> > On Jan 19, 2019, at 1:57 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'd be interested in the answer also, for my Pro.
>
> What device do you use for NTSC to VGA conversion?
>

I'm using
https://www.amazon.com/gp/product/B00M4JY722/ref=oh_aui_search_asin_title?ie=UTF8&psc=1
and it's the one that's not working. Look to be dozens of clones of this
though.. My NTSC camera works with it..

Warner