calibre drc lvs rules file

[pervanah]

hi
i'm using calibre to perform drc / lvs , i don't have the rules file , so i'm writing it , i'm asking about the dimensions , i read the rules fil of the 45 nm , the units are not clear , it doesn't define the units used ( um or nm or what ?) , an example of he rules wriiten :
" internal metal1 < 0.63 "
what does this number mean ?
um ? nm ?
and what is the dbu plz ?

 

[natryx]

it is 0.63um

 

[kumar_eee]

Refer the svrf user manual for all the syntax & better understanding.

 

[ignatius26]

dbu is Database unit
It comes from Layout rule files.