Chapter 5
Working with Traces and Copper
©
National Instruments Corporation
5-27
Setting Miscellaneous Net Parameters
Complete the following steps to set miscellaneous parameters for a net:
1.
Select
Tools»Netlist Editor
and select the desired net from the
Net
drop-down list in the
Net edit
dialog box.
2.
Click on the
Misc
tab.
3.
In the
Routing Layers
area:
•
Select layers to use for routing copper for the selected net.
Note
If the selected net is part of a net group, the
Use Group Settings
checkbox will be
checked. Turn this off if you wish to make changes in the
Routing Layers
area.
4.
In the
Priority
field:
•
Enter the routing priority for the selected net. “1” is the highest
priority, “2” the second highest, etc. Leave as None if priority
routing is not required.
5.
In the
Net Shielding
area:
•
Select which
Net
is used for the shield.
Width
becomes active -
change as desired.
Note
Shields are copper that is placed around a selected net to act as a buffer or to shield
the net from signal interferance.
6.
Enter desired parameters and click
OK
.
Setting Group Parameters
Complete the following steps to enter group information for a net:
1.
Select
Tools»Netlist Editor
and select the desired net from the
Net
drop-down list in the
Net edit
dialog box.
2.
Click on the
Groups
tab.
3.
Select the desired
Net group
from the drop-down list.
4.
Optionally, to enter a group for a bus and/or differential pair for the
selected net, click the
Bus
or
Differential pair
radio button and select
the group from the drop-down list. These groups are created in the
Edit
Groups
dialog box. Refer to the
section of Chapter 3,
, for more information.
5.
Enter desired group parameters and click
OK
.
