Honored Contributor
Honored Contributorfinally It Works I tested LVDS and they realy was triggering with 100mv difference. Here is oscilloscope picture
so was using resistor divider to supply LVDS negative pin it was 1.36V and then by changing positive pin with potentiometer (blue line in picture is LVDS positive input) and I connected LVDS pin Output to simple IO and red shows LVDS pin logic states. I think this LVDS pin is triggering very fast my oscilloscope has just 1msps. https://www.alteraforum.com/forum/attachment.php?attachmentid=114 here is my second fpga board (this my self made board that I was developing). In nios forum there is a topic how I made it :) https://www.alteraforum.com/forum/attachment.php?attachmentid=115
