Chapter 5
Working with Traces and Copper
©
National Instruments Corporation
5-15
2.
In the
Remove Islands
box, set the parameters to remove islands using
the following (an island is a section of copper within the copper area
that is not connected to any other copper):
•
Smaller than
checkbox—Enable the checkbox and enter the
desired setting. Any copper islands with length and width smaller
than this value are automatically deleted.
•
Not connected to outer edge
checkbox—Any unconnected
copper
within
the coppe area will be removed.
•
Reset all manual removed islands
checkbox—Select to replace
all islands that you removed manually (that is, by selecting and
deleting).
3.
Select
Enable voiding
if you wish the area around traces and pins not
to be connected to the copper area.
4.
If you wish to connect the copper area to a net, enable
Connected to
Net
and select the desired net from the list.
Working with Vias
This section contains the following topics:
•
•
Viewing and Editing Via Properties
Placing Vias
A via is a plated through-hole in a printed circuit board used to connect two
or more layers, as well as the top and bottom surfaces of the board.
Once placed, a via can be moved like a part. Refer to the
, section for more
information.
Complete the following steps to place a via:
1.
Choose
Place»Via
and click on the board where you want to place the
via. The
Select the lamination that is to be used for this via
dialog
box appears.
2.
Select the layers that the via is to run between (
From Layer
and
To Layer
).
3.
Click
OK
. The dialog box disappears.
4.
Right-click to cancel the
Place Via
command, or click in another
location to place another via.
