Below is a quote take from kevins site at retroblast.com
"PC Monitor Performance
The D9200 does a good imitation of a PC monitor, even though its roots are firmly planted on the arcade-side of the display equation. It is a multisync-capable monitor, or it can be set to run exclusively as a CGA or EGA monitor. (Since it is a PC monitor, it's even compatible with the ACT Labs light gun!)
As a PC monitor, the picture quality is very good at 640x480. It's every bit as sharp and vibrant as a regular PC monitor (only at 27" the picture is huge!). At 800x600 the image is not as sharp, but considering it's not an officially supported resolution, that's to be expected."