First, you nedd to check if the manufacturer requires a single or dual TDMS input.
A single DVI TDMS channel maxes out at 165Mhz. 1600x1200 @ 60hz with a 5% blanking overhead is about the limit of a single channel DVI connection. IF your device requires more then 5% of the total bandwith for blanking (and many do) then both the available bandwith and resolution drops.
Depending on the required refresh rate and the blanking bandwith(time) required by the device, you may be exceeding a single TDMS output.
Second, you need a card with a TDMS that will output the full 165Mhz of bandwith. Some low end devices will not do this. For instance, the integrated GeForce2 TDMS had problems (maxed out at like 800x600), requiring an aftermarket TDMS be integrated on the card.
This is why some large format LCD displays support 1280x1024 in DVI and 13xxish x something or another in analog mode (a samsung as I recall)
for more information see http://www.ddwg.org
Paul Driver
Slashdot Mirror
First, you nedd to check if the manufacturer requires a single or dual TDMS input. A single DVI TDMS channel maxes out at 165Mhz. 1600x1200 @ 60hz with a 5% blanking overhead is about the limit of a single channel DVI connection. IF your device requires more then 5% of the total bandwith for blanking (and many do) then both the available bandwith and resolution drops. Depending on the required refresh rate and the blanking bandwith(time) required by the device, you may be exceeding a single TDMS output. Second, you need a card with a TDMS that will output the full 165Mhz of bandwith. Some low end devices will not do this. For instance, the integrated GeForce2 TDMS had problems (maxed out at like 800x600), requiring an aftermarket TDMS be integrated on the card. This is why some large format LCD displays support 1280x1024 in DVI and 13xxish x something or another in analog mode (a samsung as I recall) for more information see http://www.ddwg.org Paul Driver