Connect Sony GDM-1934 Monitor to VGA Card

I've been asked to connect this 19 inch monitor to a Siemens computer with an ATI graphics card. Since this monitor has a multisync input I immediatly bought a VGA-Multisync cable.
Since there was no driver in W98 for this monitor, I tried (using a "normal" monitor) to install it as a GDM-1936 (it was the closest name on the list...).
What happens is that the image doesn't seem to stop scrolling (like an old TV set reacting to unstable input voltage), the image is not centered and color appear to be wrong. The monitor was connected to a DEC Avvion system and worked perfectly. Is there any chance I can use it on a PC?
The monitor specifications are:
- Resolution 1280 x 1024 pixels
- Horizontal deflection frequency: 75.855 kHz
- Vertical deflection frequency: 74.11 Hz
Thanks for any help.
gustavonevesAsked:
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gustavonevesAuthor Commented:
Edited text of question.
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gustavonevesAuthor Commented:
Edited text of question.
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swwelshCommented:
I've just finished doing a lot of research on this very subject, and I did get mine working in 98. This is a fixed frequency monitor and it may not work with your video card. I got mine working with a Matrox Mystique card, which has a high dot clock that can handle the monitor, I don't know about your ATI card, I tried mine with an S3Virge and it didn't work. You can buy a fixed frequency video card that should drive the monitor fine, but these cards are $100 - $300, which is a bit steep. Photon and Mirage seem to be the best bets for one of these. Without one of these cards, you may be able to get the monitor to sync at 1280x1024, but you will not be able to see boot up messages, run Dos games, or run at any other resolution. If you can deal with these conditions (I have mine connected to a vga switch box with an old monitor so I can see bootup messages if I have to), you should look at this url for specific instructions:

http://www.people.virginia.edu/~jrk3g/gdm1934.html

For general information about fixed frequency monitors on pcs:

http://plop.phys.cwru.edu/repairfaq/REPAIR/F_ffmon.html

If you don't feel up to building circuits for the monitor, you might consider getting an old Matrox Millennium card, which I have seen for about $20 on Ebay. The Matrox cards support sync-on-green and have a monitor setup file.
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bparnesCommented:
One approach is to experiment with different monitor declarations until you find one that works. Start with a "Standard SVGA 1280x1024" monitor and see if your monitor is compatible with that.

Interestingly, the Sony web site says that model GDM-1934 "is not valid or may be a product that is not supported by the Sony Component & Computer Products Group." Are you sure that's the correct model number for your monitor?
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satwaCommented:
Go to:
http://www.riverside.quick.com/ming/128.htm

There you will find a PCI video card that is for fixed frequency
monitors like yours. THEY HAVE THEM ON SALE FOR 489.00

If you scroll down to the bottom of the page, and click on
"CLICK HERE FOR MONITORS SUPPORTED" on the 72-78KHZ
Horizontal frequency, you will find your SONY GDM-1934
MONITOR LISTED.

They list this video card as supporting the SONY GDM-1934
at 72 to 78 KHZ horizontal frequency, with the following
resolutions:

1. 320 x200   2. 640x200    3. 640x350   4.640x400

5.640x480     6.800x600   7.1024x768    8. 1280x1024

They list a phone number for people that have problems connecting to their web site.

TEL.:(909) 372-0489

This card comes with drivers for WINDOWS 9X and WINDOWS NT.  IT HAS A WARRANTY AND IS DESIGNED TO WORK WITH
YOUR MONITOR IN A PCI SLOT ON AN INTEL COMPUTER
RUNNING WINDOWS.
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gustavonevesAuthor Commented:
Beeing the first time I post a question and regarding all the answers, I've come across this problem:
The comment from swwelsh appears to be more useful to me but, on the other hand, satwa has also answered and locked the question. Is it right to reject satwa's answer and accept swwelsh's comment instead?

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satwaCommented:
Yes reject mine, if it is not what you are looking for.
Please give the points to swwelsh.

I am sorry if this will not work for you, as it looked like the
perfect answer.
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satwaCommented:
The price of the card I gave in my answer should have been
$89.00   NOT 489.00.  The correct price is: $89.00.

I made a mistake in my typing.
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swwelshCommented:
Satwa, nothing wrong with your answer, and in fact, I may buy one of these fixed frequency cards for mine if I decide I can't live with the limitations.  Now I wish I had posted questions about mine before I wasted all that time rooting around for information. I just found an old usenet posting about this monitor that said there are 15 adjustment screws under the plastic outer case. The poster said he was able to get the monitor to sync at 1280x1024 @75Hz by adjusting the vert. sync pot - that's the standard sync for that resolution, so windows should be able to output that pretty easily. My monitor is a Sony 1934 rebadged as an HP 2094A that came with HP Apollo workstations, and strangely enough, the specs listed for a 2094a are slightly different than the 1934. Mine came up fine in Linux with the modelines listed in the links I gave you, but now I can't get it to sync in win98. I probably should have stopped playing with it.
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satwaCommented:
swwelsh

Thanks for the information.
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