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 Can I define dimension mm unit?		  New Topic  Reply to Topic
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akio masaki

Japan
5 Posts
Posted - Mar 21 2010 :  04:56:25  Show Profile  Reply with Quote
It seems to be that dimension unit is meter by default.
Can I define the dimension as mili meter unit?
The object is get fine accuracy.

Thorben

Brazil
3 Posts
Posted - Mar 23 2010 :  14:19:35  Show Profile  Reply with Quote
Hi Akio,

I believe that the answer is not.
In opposition to FH files, FastCap files does not include in its syntax any declaration about unit. So, FastCap always assume that the coordinates values written in the files are given in meters.
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Enrico

550 Posts
Posted - Apr 05 2010 :  23:23:03  Show Profile  Reply with Quote
Right: you cannot specify the units, but anyway the capacitance (in FastCap2 approximation) scales linearly. That is, if you have a sphere with a one meter radius, the capacitance is 111pF; if you have a sphere with a one millimeter radius, the capacitance is 111fF, etc.

Best Regards,
Enrico
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