Limiting number of decimal digits in ArcGIS to have exported file in CAD with same format?

I am supposed to have some numeric values in ArcGIS 10.2 for Desktop with 3 decimals Digits and then convert them to Microstation or AutoCAD. I did this Setting using field calculator and 'round' function in ArcGIS but when I convert it to CAD again it would come with more than 10 decimals which is not desired.