[plug] 20" DEC colour monitor, how to resolve sync?

Matt Kemner zombie at networx.net.au
Thu Jul 30 09:08:01 WST 1998

On Wed, 29 Jul 1998, Doug Clulow wrote:

> I just received a monitor bought in Adelaide, it is a DEC VR290 with
> three BNC connectors, RGB with sync on green.  I am hoping someone knows
> how I make it work..  I have found a copy of modeline / clock settings,
> but don't know how to set up the cable..

> Also, if anyone has a copy of the technical manual or circuit diags for
> the monitor which I could borrow/hire/buy, I may be able to work out how
> to modify the beast to work with a wider range of OSs or cards.

So far the best resource I have found on fixed-freq monitors is
It talks mainly about the Hitachi HM-4119 Series (like mine) but has many
links to other places talking about other fixed-freq monitors, including
several links to places with circuits for sync-on-green monitors (which
yours most likely is, since it has only 3 BNC plugs - Red Green and Blue)

 - Matt

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