Ground plane with Eagle

Community PCB Design
1

Hello,

I am getting DRC errors after I create a ground plane (ground polygon) on my PCB. Apparently the clearance with a few tracks is smaller than 8mils.

When the polygon tool is selected, I set the spacing to 10, though it does not seem to change anything (even after I use the rastnest tool).

How to change the clearance with the ground plane and the rest of the tracks?

Thanks,

Jean

2

Set your Isolate to at least 12.

3

rpcelectronics:
Set your Isolate to at least 12.

Hi,

Thanks for the tip, this fixed the issue… Do I need to always set the isolate parameter 4mil bigger than what the actual technology is?

Thanks

4

jeanseb:
…Do I need to always set the isolate parameter 4mil bigger than what the actual technology is?

Not necessarily. It’s just kind of a rule of thumb that I work from. I typically hand lay my crucials at a 0.1mm grid and then I go to a 7 mil grid for all of my auto. From that point I lay my ground planes with a 12 mil isolate based on that 7 mil grid.

It works well for me, so I have never really had a reason to play with it much.