allegro 放置过孔 Matrix

在画了矩形区域后有via出现在，然后就直接点击done完成，然后就放置不了过孔，现在才知道，在画了矩形区域后要在区域内再单击下才能够将via放置，否则放置不了

点击place--via array--matrix：

Matrix parameters

Specifies the Matrix parameters to generate the via array.

Staggered vias	When enabled (checked), arranges the vias in the group into a staggered pattern. Otherwise, the vias are arranged in horizontal rows and vertical columns.
Via-boundary offset	Sets the distance of the first via from the boundary. The first via references the bounding box of the shape instead of the shape boundary.
Horizontal via-via gap	Sets the horizontal center to center spacing between via columns.
Vertical via-via gap	Sets the vertical center to center spacing between via rows.

Generating a Via Array

1.	From the menu bar, choose Place - Via Arrays - Matrix.

The Via Array parameters appear in the Options tab.

2.	In the General Options area, specify the options for generating the via array.

3.	In the Operation mode area select mode.

4.	In the Via net field, enter an existing net name or browse to the net you want.

The net name appears in the Nets entry box.

Note: All DC nets in the design appear if you use the drop-down list.

5.	In the Padstack field, click the drop-down arrow and select (or type) a via type for the array.

The via type appears in the Padstacks entry box.

Note: You may need to add vias using Constraint Manager if a target via does not appear in the drop-down list.

6.	In the Matrix Parameters area, enter the spacing values.

7.	To place the via array:

Board Mode: Places the via array on the board.

Area Mode: Click on the board and select an area to place the via array. A bounding box is displayed.

Shape Mode: Click on a group of shapes to place the via array within the shapes.

Note: To insert the via array, click on the layout or choose an Done, Next, or Place from the pop-up menu.

在画了矩形区域后有via出现在，然后就直接点击done完成，然后就放置不了过孔，现在才知道，在画了矩形区域后要在区域内再单击下才能够将via放置，否则放置不了