Working with Backdrilling in Allegro PCB Designer: Best Practices
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Backdrill Layer Pair Initialization dialog is divided into two sections:
1. Create layer pairs by the deepest backdrill layers (Initialization – upper
section):
Select the deepest layers for each side, enable checkboxes on the right to
generate layer pairs for Top and Bottom or check both checkboxes. Next,
select the Create button in the section to create the backdrill layer pairs, and
then select the Close button to see the layer pairs.
Note: This section performs the same layer pair creation as the Backdrill
Pairs Question dialog presented when the Backdrill and Analysis form was
first opened.
