marginal methods (even though they work most of the time) will eventually
result in getting bit.
Jeff Condit
- Original Message -
From: Abd ulRahman Lomax [EMAIL PROTECTED]
To: Protel EDA Forum [EMAIL PROTECTED]
Sent: Friday, May 14, 2004 5:58 AM
Subject: Re: [PEDA] 0 Gap Means Touch
At 11:33 PM 5/13/2004, [EMAIL PROTECTED] wrote:
In theory, A 0 gap between two entites should be regard
as connected, but it is very critical, especially in the tangent condition
(Line to circle or arc, and so on), I think regard it as open is more
reasonable.
It should actually be caught by the
To: [EMAIL PROTECTED]
Subject: [PEDA] 0 Gap Means Touch or Not?
Dear Members,
P99SE, The gap between a track and a via is exact 0, DRC does not show this
issue, obviously, It consider the track and the via is connected. Verify the
gerber with IPC-D-356A netlist, also does not find this issue
On 09:04 AM 14/05/2004, John Girvan said:
Luo,
Were the track and via meant to be connected? If so, then the gerber files
must have been adjusted during the manufacturing. Im not sure if im reading
the problem right.
I think that the problem is something like:
1) the track and via should have
.
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]
Sent: Wednesday, May 12, 2004 11:12 PM
To: [EMAIL PROTECTED]
Subject: [PEDA] 0 Gap Means Touch or Not?
Dear Members,
P99SE, The gap between a track and a via is exact 0, DRC does
not show this issue
Some comments about this.
There really isn't a minimum copper DRC. There should be, it would not be
terribly difficult. But there isn't.
The problem situation, I read the same as Ian. A track was retracted from a
via so that it terminated outside the via, but in contact with the via.
This is
To: [EMAIL PROTECTED]
Subject: Re: [PEDA] 0 Gap Means Touch or Not?
I think the gap between entities suggests the gap between edge features
on each entity, not between centers.
While the entities MAY be touching within the virtual world, etch-back
at the real-world board-house may mean that what you
Dear Members,
P99SE, The gap between a track and a via is exact 0, DRC does not show this
issue, obviously, It consider the track and the via is connected. Verify the
gerber with IPC-D-356A netlist, also does not find this issue, But on the
finish board, the track and the via is broken. So I got
