[PEDA] SUSPECT: Re: Octagonal Pads

[ajenkins@avtron.com]

Ooh, struck a nerve, aye Harry? 

>-----Original Message-----
>From: PEDA-bounces at techservinc.com 
>[mailto:PEDA-bounces at techservinc.com] On Behalf Of Harry Selfridge
>Sent: Tuesday, November 28, 2006 2:23 PM
>To: Protel EDA Discussion List
>Subject: SUSPECT: Re: [PEDA] Octagonal Pads
>
>It has become apparent that, despite all of the presumably 
>authoritative talk, nobody engaged in discussion about AD and 
>octagonal pads has actually taken a look to see whether or not 
>the issue has been resolved.
>
>I couldn't possibly care less about octagonal pads; however, I 
>took a few minutes to run exactly the same test on them that I 
>ran on the new rounded corner pads.
>
>For the record, it appears that octagonal pads are presented 
>and processed properly by AD6.6.  I converted the pads to 
>octagonal on the same test layout I used for rounded corner 
>pads (various angles of rotation, top and bottom layer surface 
>pads, and thru-hole pads).  I produced two sets of Gerber 
>files from that layout - one mirrored and one not.  I then 
>read those Gerbers using four different CAM tools - CAMTASTIC, 
>CAM350, Pentalogix Viewmaster, and Gerbtool.
>
>All CAM tools read the Gerbers the same way, and all 
>renderings of the octagonal pads were correct.  There were no 
>rotational or dimensional distortions on any rendering of the 
>pads by the CAM tools available to me.
>
>It appears that, like many other REALLY OLD problems, this one 
>has been fixed.  Note that this does NOT mean that there isn't 
>a CAM program out there somewhere that will improperly process 
>the octagonal apertures - I don't have access to every CAM 
>program available.  It does mean that apparently Altium has 
>gotten it right for some of the more commonly used CAM 
>programs.  I can forward a set of Gerbers to anyone who needs 
>to see for themselves.
>
>Instead of old 'whine' pressed from sour grapes, how about 
>moving on to more recent vintage?
>
>Harry
>
>
> 
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