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Accuracy problem

girish
I am facing accuracy problem when i converted board file from mils (2 decimal place) to mm (4 decimal place ) again converted back to mils its showing 0.01mils less showing drc through out the board. & when I measure the pitch b/t pin (unit mils) it is incrasing by 0.01mils .REgards,GIirish
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  • KeithP
    Do not convert boards between metric and imperial units. Unlike some CAD tools where the database units are just a display, Allegro actually converts and as a result you get rounding of all features including padstacks, pitches, line widths etc. This can turn the database into a right mess. Always set up the database in the unit of choice and stick to it, never change it.

    Cheers,

    Keith
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  • KeithP
    Do not convert boards between metric and imperial units. Unlike some CAD tools where the database units are just a display, Allegro actually converts and as a result you get rounding of all features including padstacks, pitches, line widths etc. This can turn the database into a right mess. Always set up the database in the unit of choice and stick to it, never change it.

    Cheers,

    Keith
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