I'm trying to setup the constraints for a set of electrical nets so they are the same length (think DDR type signal constraints), but when I go to analyze, it shows the unrouted net length having a value and the actual total etch length as blank. I have the nets routed but for some reason no matter what I do the measurements stay blank and I am unable to use the DRC and delay tune to work. I am using 17.2 and there appears to not be the option in the constraints analysis tab for "total etch length", at least there is no box to check to turn it on or off. Any help would be greatly appreciated!
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