There is no allegro_free_viewer_classic.exe for brd file in Allegro Free...
Hi, I downloaded the allegro_free_viewer.exe version 23.1, but I can't find to tradition look like allegro_free_viewer_classic.exe for brd file.How do I go back to the older view? Where can I find the...
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Constrain manager Required and Actual Values
Hi All!First time using Orcad Capture/PCB Editor here from Altium Design. I am trying to set up the CM and one of the DRCs I am dealing with now is same net spacing. In the example below, it's pin to...
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How to review designs by using comments and markups in your board file?
A new feature of adding comments while reviewing designs has been added in Allegro X and OrCAD X releases to facilitate collaborative design. It is available only as a single-user model.To add comments...
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DB Doctor download?
Any one know where to download or access DB Doctor?Need to convert a .brd file from 16.6 version to 17 version....Thanks,Guido
View ArticleDifferent pad to pad spacing value
I would like to know how to handle this scenario in Cadence Allegro:I have two pads, Pad1 and Pad2 and both are connected to different nets.Say I have Pad to Pad spacing value of 50um and Pad to Shape...
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pcb db doctor
I have this error when I try to open a symbol from a library created with orcad 16. I don't have any dbdoctor and I need your help to solve itThx
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padstack on symbol
hello i exported a symbol from an existing design. the symbol (dra file) shows only pin numbers. is there a way to physically show a padstack on a symbol? regardsmasa
View ArticleIncorrect plane GND with via not isolated
I've imported a project from EAGLE for compatibility to OrCad PCB Editor 17.4 . The board is 4 layer. Works well but I've a problem with GND plane. On TOP, BOT, and POWER planes I've a GND shape that...
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How to define counterbore/countersink from either top or bottom side of board?
Before 23.1, the counterbore and countersink functionality was available only for the primary or top side. After the 23.1 release, in secondary drill definitions of the padstack editor,...
View Articlecomponent dxf to footprint
Hello Everyone,Greetings of the day.With reference to the above subject, I would like to inform you that, I have a component dxf file. I am unable to find the exact part number of the same. I want to...
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What is Microvia Slot and how it can be added using Padstack Editor?
Currently, plated slots can be used as vias and pins in the layout but there is no way to use the small-plated slots as microvias. Starting SPB 23.1, a new padstack usage, Microvia Slot, is added in...
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Unveiling the power of PCB Design for Manufacturing checks in Allegro X and...
In the dynamic realm of PCB design and manufacturing, staying ahead with cutting-edge tools is paramount. OrCAD and Allegro PCB Editors offer a suite of powerful Design for Manufacturing (DFM) checks...
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Introduction to Creepage and Clearance rules in Electrical Constraints
With the Enterprise PCB Designer and Allegro X Venture licenses, two new high-voltage Constraint Sets, Creepage and Clearance, have been introduced. These rules can be set in the Electrical Constraint...
View ArticleBest Practices - Defining and placing jumpers with arbitrary distance ?
Working on a double sided board where ground planes cannot be broken, I found it was neccessary to use jumpers on a few spots. But Cadence idea of a jumper and my own seems quite different.The way I...
View Articlelength matching
What is Dynamic and static length matching? with respect to Relative propagation delay and total length match
View Articlesymbol locked issue
helloi try to move pins on a symbol.i unlock the symbol and am able to move pins.however, once i close and reopen the file, the symbol is locked again.is there a way to unlock symbols even after i...
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Multi-drill patterns in Padstack Editor are now driven by drill pitch
Until now, the multi-drills defined in Padstack Editor were driven by Clearance between columns and Clearance between rows, as shown in the following image:Starting SPB 23.1, defining a multi-drill is...
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Adding custom anti-pad for Backdrill in the adjacent layer
Hi all,I have a 10mil Backdrill anti-pad on my board. Causes of this signal reference is missing. How can I create a 5mil anti-pad only on the immediate below layer? Please see the attached image for...
View ArticleHow do you use allegro_uprev to update .dra padstacks, etc.? I need to update...
Hi,I am trying to update my library for newer design and using DBdoctor to update .dra and padstack is tedious. How can I use allegro_uprev for this? Looking for documentation and examples for the...
View ArticleHow to fix this error when I trying to export the ODB++ in allegro.
Hi everyone,I need to continue design from another designers and I have a problem when I trying to export the ODB++ file.When I try to run ODB++ inside and select .tgz as the output, all of the ODB++...
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