Stats

  • Locked Locked
  • Replies 4
  • Subscribers 167
  • Views 1340
  • 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

Loads of ratsnests after changing component/footprint.

StepscanDarcy

New week, new problem.   The community here on these forums has been amazing at helping me with any issues I've run into so far.  I've completed the changes on one board already!   Now, i'm onto the second board, and I'm just adding one of the same components as last time, but to a different board.    I went about it the exact same way as last time, only this time it's created loads of ratsnest in places that are not near the new connector.   I don't think this happened on the last board, and takes what should be a one afternoon job, and is going to turn it into a few weeks (for someone like me).   Did I do something wrong this time? Or did I just get lucky last time.


What I did:
-updated footprint of old connector in ORCAD Capture by creating the footprint in pcb designer.(same number of pins)

-create netlist from newly saved .dsn file.

-open new .brd that was generated in PCB Designer.

This created LOADS of ratsnest.   I then opened the original .brd file in pcb designer and selected everything in general edit mode and selected "unfix".   I remade the netslist now, and there are still all sorts of new ratsnests, but not as many as the previous export.   

Parents
  • Ummer

    If number of pins are same then place the updated footprint in the the psm path and use place - > update symbols -> in package symbols select the desired footprints, check ignore fixed property and  update pad stack from library.

    [Note - before updating go to Place->manually and in advanced settings uncheck database and check library]

Reply
  • Ummer

    If number of pins are same then place the updated footprint in the the psm path and use place - > update symbols -> in package symbols select the desired footprints, check ignore fixed property and  update pad stack from library.

    [Note - before updating go to Place->manually and in advanced settings uncheck database and check library]

Children
No Data
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.