DVI-I/DVI-A video connector question

[John]

I'm interested in the analog signal this connector will accept. I am
wondering if a TV with this connection type will accept an analog RGB signal
from some older equipment, namely arcade video signals, which run at 15Hz.

Does anyone have any idea?

 

[Jasen Betts]

On 2009-04-23, John <john@junk.com> wrote:

I'm interested in the analog signal this connector will accept. I am
wondering if a TV with this connection type will accept an analog RGB signal
from some older equipment, namely arcade video signals, which run at 15Hz.

DVI includes all the signals present in VGA If the games do separate sync
(not sync on green) then there's a good chance that it could work.

 

[Bob Larter]

John wrote:

I'm interested in the analog signal this connector will accept. I am
wondering if a TV with this connection type will accept an analog RGB signal
from some older equipment, namely arcade video signals, which run at 15Hz.

Does anyone have any idea?

I'd be astounded if arcade video ran at 15Hz - I think you've gotten
your research wrong there. I believe that arcade games actually run RGB
at either NTSC or PAL frequencies.

<Googles>

Ah. You mean 15KHz, *not* 15Hz. It turns out that arcade games run at
NTSC frequencies.

So the answer to your question is a qualified "yes" because you'll need
to modify the video levels from your arcade game (up to 5V) down to the
1V or so needed by a TV.

Some information:
<http://members.optusnet.com.au/eviltim/vga2arc/vga2arc.htm>
<http://homepage.ntlworld.com/andrew.lewis5/arcade/video.htm>
<http://en.wikipedia.org/wiki/Digital_Visual_Interface>

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[John]

"Bob Larter" <bobbylarter@gmail.com> wrote in message
news:gsv03p$cl8$1@blackhelicopter.databasix.com...

John wrote:
I'm interested in the analog signal this connector will accept. I am
wondering if a TV with this connection type will accept an analog RGB
signal from some older equipment, namely arcade video signals, which run
at 15Hz.

Does anyone have any idea?

I'd be astounded if arcade video ran at 15Hz - I think you've gotten your
research wrong there. I believe that arcade games actually run RGB at
either NTSC or PAL frequencies.

Googles

Ah. You mean 15KHz, *not* 15Hz. It turns out that arcade games run at NTSC
frequencies.

oops... typo there.

So the answer to your question is a qualified "yes" because you'll need to
modify the video levels from your arcade game (up to 5V) down to the 1V or
so needed by a TV.

hmmmm... interesting, thanks.