Switching Environments on a Current Part
Printed From: PCB Libraries Forum
Category: PCB Footprint Expert
Forum Name: Questions & Answers
Forum Description: issues and technical support
URL: https://www.PCBLibraries.com/forum/forum_posts.asp?TID=1209
Printed Date: 19 Nov 2024 at 12:37am
Topic: Switching Environments on a Current Part
Posted By: BryanT
Subject: Switching Environments on a Current Part
Date Posted: 13 Dec 2013 at 12:02pm
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Hi Tom, I'm having trouble switching environments on current parts. For example, I build a part using the Nominal environment. I decide that the pads are too large and I want to build in the Least env. I dont see how I can do that. I've had to go back, change the User default and re-do the footprint. In your older tools I could easily switch between the environments and check the different results. Did that change? Am I doing something wrong - or missing something? Thanks! Bryan  |
Replies:
Posted By: Tom H
Date Posted: 13 Dec 2013 at 12:18pm
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Some people get the User and Default Preferences mixed up. In "Setup > Preferences > Design" if you select "User" it is a 1-Tier library system.
If you select Least, Nominal or Most it is a 3-Tier library system.
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Posted By: BryanT
Date Posted: 13 Dec 2013 at 12:27pm
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Hi Tom, Thanks - I understand that, but my question was how do I change it WHILE BUILDING A PART. I had User Default set to Nominal when I built my part. I decided to change it to "Least" but it doesnt change the footprint I built. I have to start a new footprint to get the "Least" results. |
Posted By: Tom H
Date Posted: 13 Dec 2013 at 12:47pm
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You need to tell us what version of the program you are using and what component family you are trying to build (this is very important). The V2013.17 works perfect for me and you seem to be the only one having problems. ------------- Stay connected - follow us! https://twitter.com/PCBLibraries" rel="nofollow - X - http://www.linkedin.com/company/pcb-libraries-inc-/" rel="nofollow - LinkedIn |
Posted By: BryanT
Date Posted: 13 Dec 2013 at 12:57pm
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Tom, I upgraded to 2013.17 yesterday. So here's a pic of the part I did - its in the PQFN with Tab Family. You can see that its set for the Least Env:  |
Posted By: BryanT
Date Posted: 13 Dec 2013 at 12:59pm
Then I changed the User Default to the Nominal Env - and then said "OK" again - should it update the footprint at that point? It didnt in this case: |
Posted By: Jeff.M
Date Posted: 13 Dec 2013 at 1:16pm
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The default (or User) environment isn't applied until you select a component family. If you change your preference while calculating any particular component family it won't be applied until you change the component family. ------------- Stay connected - follow us! https://twitter.com/PCBLibraries" rel="nofollow - Twitter - http://www.linkedin.com/company/pcb-libraries-inc-/" rel="nofollow - LinkedIn |
Posted By: Tom H
Date Posted: 13 Dec 2013 at 1:17pm
When you are building a single Footprint, you change the environment in the Calculator, not User Preferences. Select the "Terminal > Environment > Dropdown" ------------- Stay connected - follow us! https://twitter.com/PCBLibraries" rel="nofollow - X - http://www.linkedin.com/company/pcb-libraries-inc-/" rel="nofollow - LinkedIn |
Posted By: BryanT
Date Posted: 13 Dec 2013 at 3:20pm
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AHHHH - Thats what I was looking for Tom. Thanks - just couldn't seem to find that. And after all that, looks like the pad size doesnt change when switching from L to N anyway. But I'm thinking its because of the tight configuration of the landpattern. There's no room for the pads to grow. Anyway, thanks for your help. All looks good now. Bryan |
Posted By: Tom H
Date Posted: 14 Dec 2013 at 12:05pm
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The Library Expert screen changes so fast that I cannot tell the difference when I change environments from Least to Nominal. The only thing that's noticeable is the Courtyard Excess spacing. But you can easily see the pad dimensions when you switch environments by selecting the "Footprint" tab. ------------- Stay connected - follow us! https://twitter.com/PCBLibraries" rel="nofollow - X - http://www.linkedin.com/company/pcb-libraries-inc-/" rel="nofollow - LinkedIn |