Working on my first four layer board and have a few questions about the
power plane polygons.
The Vdd & DGND planes overlap each other, with one being slightly
smaller (for visibility), and are both in slightly from the board edge
to prevent shorts when panelized.
There are now a few rectangular areas inside those polygons where I'd
like have neither plane plated-- "voids" in those areas as it were. How
is that done? Not sure where that kind of editing is covered in the
manual, or where to find an example.
I have several through vias that tap off either Vdd or DGND to provide
power for a top or bottom trace (or both) as needed. What I'm not
seeing are the "thermal" connect areas. Pretty sure the connection is
being made since vias high light correctly when selected. But given the
expense of 4 layer board, I'd like to be sure it's correct!
Thanks in advance for your help.
Just as a FYI, I've also noticed displaying/hiding the fills doesn't
seem to work (or work consistently) with such overlapping polygons. For
now, if it does show up when not needed, exiting & restarting EAGLE
hides the fill. Also in working on a test area, I see the fill does
not show up unless there is a through hole part inside the area.