why after some time decal's pads in the library change coordinates by some decimal places ???! especially multi-ball BGA
Anybody knows that issue? why is this happening?
whether this happens when changing units mm to mils and vice versa?
You aren't giving us much to go on. Can you give an example? Are you seeing 0.001 mm shifts or 100 mm shifts?!
I've heard there can be rounding issues when shifting back and forth in units. The base unit in PADS Layout is
"1 mil =3810000 database units" (from padslayout_ref.pdf), Enough processing on that non-floating point number will give rounding errors.
component created in mm and saved in mm after some time has some (randomly) pads shifted by 0,00001mm
I have not seen anything like that elsewhere...
Welcome to PADS. PADS is designed around the 0.0254 mm (1 mil) mindset, so you'll find a lot of very minor annoyances like that. They have about a 0.1% chance of ever getting fixed, so you'll learn to deal with them.
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