Need a quick and way to get 15 Khz out of a net book.

[Locke141]

I'v been looking to buy a SCART CRT tv before I leave Tanzania at the end of July and have ran in to some issues.

The one and only goal for this is to simple test some SCART CRT to confirm that they except a RGB signs. It does doesn't even need to be 15khz for the test, it just needs to display a image on the CRT.

Where I'm at

• I made a VGA to SCART cable
• In east Africa so ordering/finding a graphics is not a really an option
• The only computers that I personally won in country,  that I would be to mess with the video drivers is a dell mini 10v or some R-pie's

The net book usually runs Lubuntu but is running XP for now, doing some testing for another project. I it use when I don't want to walk around with my expensive looking MacBook. I'm down loading XP drivers for the Dell mini now but I don't think it can drive an external display in any other mode then mirrored. If I used soft 15 khz could it damage the LCD? Is there a XX khz mode that will work on a TV and the LCD?

[MonMotha]

Getting 15kHz video out of a system running Linux is straightforward, if perhaps non-obvious to someone not familiar with X's internals.  It doesn't require any 3rd party software and is driver independent, which is handy.

It does, however, require that your hardware be capable of it.  Not all hardware is.  Unfortunately, in this case, your hardware probably doesn't.  Most Intel IGPs of the "netbook" era won't do it.  Even some nVidia graphics from that era wouldn't do it.  Essentially all ATI/AMD will, though.


To answer the other questions, no, you're not likely to damage an LCD with a 15kHz signal.  While the universe is great at inventing better idiots (designers, in this case) when somebody tries to make something idiot-proof, there's very little way to damage an LCD monitor in that manner.  Also, no, you're not likely to find a mode that both your 15kHz SDTV can handle and your LCD monitor can handle unless you have one of the relatively uncommon (but by no means unheard of) PC LCD monitors that will handle 480i/240p 15kHz video.

[haynor666]

Actually most LCD that have HDMI will support 480i and 240p (when there is HDMI it is expected to plug DVD player, TV tuner etc.). My Asus VS248 can do this.

[MonMotha]

I guess that makes sense.  I only own one PC monitor with HDMI in, and it's not exactly something I'd even considered trying to put 480i/240p into (it's a 4k).  The rest of my PC monitors pre-date HDMI being remotely popular in PC monitor applications; they have DVI and analog inputs and will generally only handle 480p or higher (I do have one high-end monitor that will take 480i or 240p RGB).  The question would be if these newer monitors will accept it over their analog ports, since that's presumably what we're talking about using here.

[haynor666]

In my opinion modern monitors should support at least interlaced resolutions when equ. with HDMI because all blueray players, PS3 can output interlaced resolutions. In fact most monitors are also capable supporting DVD players 480i so that way will support even 240p. Also such monitors will support range 49 - 61 Hz.

[Locke141]

Thanks guys,

I have not had to spend on this lately but I had the bright idea that some pal DVD player probably have SCAT RGB out put. it turns out they do.  I'm going to pick up a new SCAT cable and try one of the sops DVD players.

[behrmr]

What about a GBS8100?  It converts VGA to CGA (15 kHz).

http://gonbestechnology.en.ecplaza.net/gbs-8100-vga-to-rgb--239168-3104619.html