Dear users>

I've installed protel but when I open the chip capacitors or resistor
library protel shows me a wrong visualization specially with the top overlay
lines (yellow lines) which are around the pads of the chip drawing. I
applied the sp2, sp3 and sp4 and nothing happens, and the problem is only
with these libraries.

Thank for your help.

Jean Paul

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Enviado el: Tuesday, October 04, 2005 10:01 AM
Para: [email protected]
Asunto: PEDA Digest, Vol 13, Issue 2

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Today's Topics:

   1. Re: arcs in Gerber go the wrong way (Paolo Morgano)


----------------------------------------------------------------------

Message: 1
Date: Tue, 4 Oct 2005 09:58:01 +0200
From: "Paolo Morgano" <[EMAIL PROTECTED]>
Subject: Re: [PEDA] arcs in Gerber go the wrong way
To: "Protel EDA Discussion List" <[email protected]>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
        reply-type=response

I followed your suggestion and analized gerber file... I discovered that the

error occurs when I import lines like these

G03X25287Y16979I1968D01*
X23318Y15010J1969*
X25287Y13042I1969*
X27255Y15010J1968*

...to fix my problem I've to modify them into

G03X25287Y16979I1968D01*
G03X23318Y15010J1969*
G03X25287Y13042I1969*
G03X27255Y15010J1968*

but the *real* problem is that the file I analized, the one I can't 
correctly importe now with Camtastic, is already imported in a .CAM file by 
a previous installation of Camtastic...

I also tried to specify "Use 360 deg arcs as defaults" in the import 
options, but the import display always just the first quarter of the arc...

----- Original Message ----- 
From: "Abd ulRahman Lomax" <[EMAIL PROTECTED]>
To: "Protel EDA Discussion List" <[email protected]>
Sent: Saturday, October 01, 2005 3:04 AM
Subject: Re: [PEDA] arcs in Gerber go the wrong way


> At 02:08 AM 9/30/2005, Paolo Morgano wrote:
>>  my special problem is that I just reistalled DXP with SP1-2-3 and I 
>> can't see arcs correctly drawn, in the sense that I see just a 
>> quarter-arc of a circle, fo example... if possible I'd post a picture...
>
> You didn't specify it, but I'm assuming that you are using CAMtastic from 
> what you write below.
>
>>  The gerber files I'm trying to see are produced with Mentor by a 
>> consultant of mine, that always produced these filse the same way, and I 
>> never experienced any problem before.
>
> If this had been a Protel import, it would be more understandable, for 
> Protel was not designed specifically to import generic Gerber but only 
> Protel-generated Gerber, and thus many of the commands used in RS-274X, 
> and which might be used in a different way by other programs, are not 
> correctly interpreted by Protel.
>
> However, it's CAMtastic, which is supposed to be universal, designed to 
> import *all* CAM files.
>
> So I'd really suggest slicing up the gerber until you find the offending 
> Gerber commands. It would be easy to compare these commands with the 
> RS-274X standard. And with Protel and CAMtastic output.
>
> If CAMtastic is failing to read standard RX-274X gerber, Altium should be 
> notified. Anyone know if there is a known bug in CAMtastic regarding this?

> (We know that Protel won't read much of anything that it has not 
> generated, there are too many variables and the programmers did not try to

> build a generic gerber import into Protel....)
>
>>  In effect I suppose that is a Camtastic's import issue: I have 
>> previously imported gerber files that I correctly view in an old cam 
>> documen, but, if I try to re-import these files with the 
>> brand-new-installed DXP, I experience the problem I tried to explain 
>> below.
>
> Something is off, for sure. Perhaps there is an option in CAMtastic we 
> don't know about. I don't have an installation handy at the moment to 
> look.
>
> Look at the actual gerber code. It's not hard to read. Google RS-274X to 
> find a manual on the standard.
>
>
>
>
>
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