Справочник Пользователя для National Instruments Ultiboard

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. 

Via properties consist of five tabs: Attributes, General, Via

Settings and Thermal Relief. 

The Attributes tab allows you to edit the properties of the selected via. 
Refer to the 

 section of Chapter 4, 

, 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.