I used the same cable that was originally connected to the original CRT
monitor. The cable was at least 6 foot long, straight through DB9 on both
ends. I was getting blurring and ghosting on the VGA monitor using this
That is a classic sign of reflections o nthe cable caused by incorrect or
missing termination.
My guess is that the adpater input is untermianted and that adding
termination resistors would have improved things.
-tony