Tim, Igor and others,
I did a little experimenting last night on this issue and confirmed my
suspicions. The mid P&P point is calculated from the center of all pads locations.
I made up several parts that had identical pad locations, then I added other
details like silkscreen, copper fills, copper tracks, text and other lines. The mid
location never changed as long as I didn't change the pad locations. Changing pad
locations by 10 mils resulted in the expected 5 mil shift in the mid P&P point.
Sincerely,
Brad Velander.
Lead PCB Designer
Norsat International Inc.
Microwave Products
Tel (604) 292-9089 (direct line)
Fax (604) 292-9010
email: [EMAIL PROTECTED]
http://www.norsat.com
> -----Original Message-----
> From: Igor Gmitrovic [mailto:[EMAIL PROTECTED]
> Sent: Monday, August 25, 2003 9:52 PM
> To: Protel EDA Forum
> Subject: Re: [PEDA] Geometric Center
>
>
> I beleive to have read somewhere that the center is
> calculated from the component outline on the Top Overlay.
> Don't take me for it, it is just from the memory.
>
> Regards,
>
> Igor
>
> -----Original Message-----
> From: Tim Fifield [mailto:[EMAIL PROTECTED]
> Sent: Tuesday, 26 August 2003 1:28 AM
> To: Protel EDA Forum
> Subject: [PEDA] Geometric Center
>
>
> Does anybody know how Protel 99SE calculates the geometric
> center (Mid x,y)
> in the pick and place files?
>
>
> Tim Fifield
>
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