• Skip to main content
  • Skip to search
  • Skip to footer
Cadence Home
  • This search text may be transcribed, used, stored, or accessed by our third-party service providers per our Cookie Policy and Privacy Policy.

  1. Community Forums
  2. PCB Design
  3. Generating gerbers

Stats

  • Locked Locked
  • Replies 10
  • Subscribers 168
  • Views 24465
  • Members are here 0
More Content
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Generating gerbers

FrancisFogarty
FrancisFogarty over 12 years ago

Hi Guys 

 

im getting a few warnings in the log file when generating gerbers.

WARNING: more than one via class in film record

    WARNING: Null REGULAR-PAD specified for padstack VIA188 at (-576.17 -530.00) 

is it ok to leave these warnings alone?

Regards

Fran  

  • Cancel
  • oldmouldy
    oldmouldy over 12 years ago

    Probably not. The Via Class entry for a given layer Film Control would be VIA CLASS/<layer>, like VIA CLASS/TOP, this might not matter of all the Vias are through but probably best to look at the Film Control data and clean this up.

    Connections are made to the Regular Pad(s), NULL means a zero, or no, definition for that padstack so its not going to be making a connection. Visit the location in PCB Editor and check padstack definition, Tools>Padstack>Modify Design Padstack, select the location and Edit in Options to open the padstack definition. (Or Tools>(Quick )Reports and get a Padstack Definition report on all the padstacks) Could be that VIA188 is not defined correctly.

    • Cancel
    • Vote Up 0 Vote Down
    • Cancel
  • FrancisFogarty
    FrancisFogarty over 12 years ago

    Hi Oldmouldy 

    Thanks for the reply. i imported the gerbers to view them and it seems like the vias are making contact to the correct planes?

    might it be ok to leave it in that case?

    if not is it possible to select the group of vias  and modify the padstack for all belonging to same net becaus ei have alot of the same error.

     

    Regards

    Fran 

    • Cancel
    • Vote Up 0 Vote Down
    • Cancel
  • FrancisFogarty
    FrancisFogarty over 12 years ago

    Thanks for that,

    The warnings i was getting was for my solder mask films. i accidentally put in soldermask top for the BBvia layers. this seems to be the error im not getting a warning anymore.

    should i give new gerbers to the manufacturer just in case?

    Also could u tel me what is the purpose of the checkbox " Full contact termal-reliefs " in the film control form? if you have already specified your termals to be full contact?

     

    Regards

    Fran  

    • Cancel
    • Vote Up 0 Vote Down
    • Cancel
  • oldmouldy
    oldmouldy over 12 years ago

    Check the help, that Artwork Film setting is for negative planes only and just deletes the Flash on those planes, the Global Dynamic Parameters are for Positive shapes / Planes, they are the one you need set.

    (IMHO, You could give the fabricator the new photoplot data, just in case....)

    • Cancel
    • Vote Up 0 Vote Down
    • Cancel
  • FrancisFogarty
    FrancisFogarty over 12 years ago

    Thanks once again for all the help. its much appreciated.

    Regards

    Fran  

    • Cancel
    • Vote Up 0 Vote Down
    • Cancel
>
Cadence Guidelines

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.

© 2025 Cadence Design Systems, Inc. All Rights Reserved.

  • Terms of Use
  • Privacy
  • Cookie Policy
  • US Trademarks
  • Do Not Sell or Share My Personal Information