How can I prevent FAB 3000 from creating a Negative Polarity or Mirror during Gerber Import?

Posted about 9 years ago by Simon Garrison

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Simon Garrison Admin

Some Gerber files will contain header options to display as negative polarity (IPNEG) or mirror (MI).  Per the latest Gerber standards these two options should not be used are obsolete.  If you do not wish to have FAB 3000 apply negative polarity or mirror to your gerber files, please uncheck the following option "" (and


Note:  This is a one-time requirement only.


Using AutoLoad....

1. Go to menu:  File / Import / AutoLoad...

2. Click Button "Format Settings...".

2016-10-06_13-57-32-formatsettings.png


3. Uncheck option Perform Neg/Mirror Layers (if Required).

2016-10-06_13-55-53-GerberImportNeg-Mirror.png




Using Gerber Import

1. Go to menu:  File / Import / Gerber...

2. Press Button "Gerber Options"

2016-10-06_14-00-40-Gerber-options.png


3. Uncheck option Perform Neg/Mirror Layers (if Required).

2016-10-06_14-01-45-neg-mirror.png




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