Issue link: https://resources.pcb.cadence.com/i/1180264
Working with Backdrilling in Allegro PCB Designer: Best Practices Learn more at Cadence Online Support https://support.cadence.com © 2014 Cadence Design Systems, Inc. All rights reserved worldwide. Page 21 Setup and Analysis User Interface The heart of the backdrill application is the Setup and Analysis User Interface located in the Manufacturing > NC menu of the Allegro PCB Designer. This form controls the side of the board to be backdrilled from, object types, and number of passes per side. Analysis in the form of graphical violations and a detailed log file is provided when Analyze button is selected. The UI is designed to facilitate experimentation by editing pass sets and reviewing backdrill plunges per layer pair to eliminate the underutilized backdrill layer pairs. Multiple Analysis runs can be performed for fine tuning and backdrill results by selecting the Backdrill button to commit. Opening the form for the first time - Upon invocation, you will be presented with the Backdrill Pairs Question dialog. It can be used to produce a similar result to the Cadence default passes of previous versions with some fine-tuning by defining the layer pairs based on the deepest backdrill layer by side and have these automatically generated. Tool Tip – Defining the layer pairs manually might result in stub violations due to the missing layer pair definition that should be included in the backdrill operation. Clicking the Skip button from this initial dialog will allow you to begin Backdrill setup with an opportunity to generate the backdrill layer pairs based on the design analysis. The Backdrill Setup and Analysis form gives you the ability to generate the backdrill layer pairs manually using the RMB Popup on a layer pair row, as in the previous releases, or automatically using the Layer Pair Initialization button.