For the Samsung 213T
30-93 is the analog hsync (if you are using the VGA out).
30-80 is the digital hsync (if you are using the digital out).
56-75 is always the vsync rate.
To be honest, I'm not sure how exactly the sync relates to the refresh rate, but I got those numbers off Samsung's website.
Last edited by jtshaw; 01-27-2005 at 06:54 PM.