question about Gerber D code

[winglj]

Hello, everyone. Happy New Year.

I have a question about the Gerber file D code format.

If I have a PCB with 0.6 mm trace and 0.4 mm radius via, how can I define the D code in Gerber file for round or rectangular aperture usually?

And what's the polarity of D code? Thanks

 

[cyberrat]

Have a look at this doc for info on the Gerber system.

That should help.

Or perhaps google for barco & rs274 & gerber and somewhere you will find more info.

some more info available here.

Roland.