Phillip,
        I don't use the board wizard, however I would be relatively sure
that the 12.6mil is a default for any prepreg layer added to a stack-up. I
don't think that the board wizard would take into account the overall
thickness of the PCB against any particular spec.

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

See us at Booth S8155 at NAB 2002 in Las Vegas April 8 - 11.


> -----Original Message-----
> From: Phillip Stevens [mailto:[EMAIL PROTECTED]]
> Sent: Saturday, April 06, 2002 10:28 PM
> To: Protel EDA Forum
> Subject: [PEDA] PCI cards, board wizard, and layer stackup...
> 
> 
> 
> I've noticed that the PCI board wizard doesn't seem to change 
> the prepeg
> and core thicknesses,  as viewed in the layer stackup dialog. 
>  Both prepeg and core
> are always set to 12.6mils by the board wizard.  (5V 32bit 
> short PCI card)
> I tried a 6 layer, a 4 layer, and even (as an experiment) a 2 layer.
> It's always 12.6mils.
> 
> The total board thickness should be .062" for a PCI card.  Should the
> board wizard have modified the prepeg and core thicknesses,  
> depending on
> the number of signal layers one selected in the board wizard, 
>  so that the
> total thickness comes out to .062"??
> 
> ---Phil

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