Chapter 5
Working with Traces and Copper
5-16
ni.com
Note
Depending on your setting in the
PCB Design
tab of the
Preferences
dialog box,
vias associated with a trace may be deleted when the trace is deleted.
Viewing and Editing Via Properties
Via properties consist of five tabs:
Attributes
,
General
,
Via
,
Layer
Settings
and
Thermal Relief
.
The
Attributes
tab allows you to edit the properties of the selected via.
Refer to the
, for more
information.
The
General
tab is the default, and appears when you choose
Edit»Properties
. It allows you to change the X/Y coordinates, the size of
the clearance, the via angle, the side of the board the via is on, and to define
the units of measurement.
Complete the following steps to change the settings in the
General
tab:
1.
In the
Measurements
box, set the following as desired:
•
X
,
Y
—The X and Y coordinates of the via.
•
Net
—The net the via is connected to (read-only).
•
Angle(degrees)
—Leave at 0.00.
•
Board side
—Select either
Top
or
Bottom
radio button
(read-only).
2.
Optionally, enable the
Locked
checkbox to lock the via in place, and
change the
Units
of measurement.
3.
In the
Clearances
box, enter the desired clearance of the selected via
to traces in the
To Trace
field.
Complete the following steps to change the settings in the
Via
tab:
1.
Enable the
Assume net
checkbox to assign a specific net to the via,
then select the net from the drop-down list.
2.
In the
Via Settings
box, set the following as desired:
•
Use Design Rules
radio button—Select to use the settings in the
Pads/Vias
tab of the
PCB Properties
dialog box.
•
Pad Diameter
radio button—Select to enter the diameter of the
selected via’s pad in the drop-down list. The
Drill Diameter
drop-down list is also activated; enter the desired value.
•
Plated
checkbox—Check to plate the inside of the via’s drill hole.
