Thank you for your different replies.
@samuelsanf : you're right, I don't use these 3 options because it doesn't work for a dwg with real coordinates.
I tried "Manual-Center" and put the cad file near the internal origin but lines were distorded.
@Simon_Weel : the distance limit from internal origin in revit isn't a problem for me because I used to work near the internal origin. The way to work with relative coordinates and real coordinates works well so I don't need to work far from the internal origin.
@samuelsanf and @ViviNyehuusAndersen : I've already used the "Auto - Center to center" option but:
- in case of an update of the cad file, the center won't be the same as the old version. Will the file stay at the same position no matter we moved or didn't move it after the first time we linked it?
- sometimes I have some difference when using "zoom all" in Autocad and Revit. It can be ok in Autocad (any elements far from the project) but not in Revit whereas it's the same file (all layers visible). And I can't modify the cad file because I can't see the elements which are far from the project. That's why I tried the "Manual - Center" option to link the cad and put it directly near the internal origin
- I have to unpin the file to move it and then to pin again. It's not a big problem but the "Manual - Center" is more practical.