Working with Backdrilling in Allegro PCB Designer: Best Practices
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Tool Tip – On the sequential lamination designs, using the Blind and Buried via
technology, you have the ability to backdrill from an internal layer by creating a New
Pair Set (RMB > New Pair Set) and inserting additional layer pairs using Insert Pair
(RMB > Insert Pair).
Select the objects to backdrill and to which layers ("To Layer") you wish to backdrill.
Note: Changing the Pair ID Number at this stage will add additional layer pair rows.
Insert new layer pairs as needed and make sure you enable these to be included in
backdrill.
Note: The Plunges column will remain blank on the newly added layer pairs and
requires Analysis or Backdrill to be run for the information to be updated.
