[PCB_FORUM] Re: Planes be POSITIVE or NEGATIVE

Search the forum archives - there's many many many posts on the benefits of 
each.
> 
> From: "Jean Bratton" <jean.bratton@xxxxxxxxxxxxxx>
> Date: 2008/07/25 Fri AM 10:03:19 CDT
> To: <icu-pcb-forum@xxxxxxxxxxxxx>
> Subject: [PCB_FORUM] Re: Planes be POSITIVE or NEGATIVE
> 
> I'm surprised to not see any feedback on this at all! My take is this
> 
> External layers or any layer that's mixed wiring/plane you need to use
> positive shapes. Dynamic is best as you don't have to update each time
> you change something in that area. 
> 
> Inner layers that are fully plane (may be multiple planes, just no
> traces) are best done with negative planes. Allegro database and output
> data files are smaller.
> 
>  
> 
> From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
> [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Zafar Bhatti
> Sent: Thursday, July 24, 2008 6:19 PM
> To: icu-pcb-forum@xxxxxxxxxxxxx
> Subject: [PCB_FORUM] Planes be POSITIVE or NEGATIVE
> 
>  
> 
> Hi All,
> 
>  
> 
> What is the preferred way to make planes, positive or negative, dynamic
> or static. Any thoughts, insights would be deeply appreciated.
> 
> Any pros / cons for both cases?
> 
>  
> 
> Regards,
> 
>  
> 
> Zafar Bhatti
> 
> Design Engineer
> 
> Whizz Systems Inc.
> 
> Office:(408) 980-0400 Ext. 112
> 
> Cell:(408) 569-0517
> 
> zbhatti@xxxxxxxxxxxxxxxx <mailto:zbhatti@xxxxxxxxxxxxxxxx> 
> 
>  
> 
> 
> 

Dave Schaefer
dave.schaefer@xxxxxxx

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