I have no idea how the OrCad ports got enabled. I have not loaded any
OrCad schematics to my knowledge. Must have been operator error?
-Original Message-
From: Andrew Jenkins [mailto:[EMAIL PROTECTED]]
Sent: Sunday, December 15, 2002 4:40 PM
To: Protel EDA Forum
Subject: Re:
Hi,
I was trying to generate a Bill of Material (BOM) report
for a schematic and got:
An EAccess Violation error occurred in BOMDLL.DLL
This is not a new schematic. I had generated BOMs before
with no problems.
I have 99SE with SP6. The schematic is in a MS Access
Database format and is in
Steve,
I had this very same problem not that long ago. The problem seems to
be something in the .cfg file. I went through umpteen re-installs and other
trials trying to solve the problem but it only went away when I deleted all
non-essential files including the .cfg file. At the time
Steve,
I haven't received that Protel mailing yet. Protel mailings with me
are sort of hit and miss. I commonly hear about mailings on this list but
never receive them myself even though I know Protel has all my current
contact info.
Sincerely,
Brad Velander.
Lead PCB Designer
Norsat
Hi Everyone,
Last year, I had a run of 1000 PCB's (4 layer) where 80% initially passed QC, then
90% of the pass PCBs failed after a few days
of use. After exhaustive investigation, I cut right through the PCB with a huge pair
of scissors. It turned out the PCB's middle
layers had around
Mr. Wilson has ably answered the questions, I have a little to add.
At 08:26 PM 12/15/2002, you wrote:
On 08:44 PM 15/12/2002 -0400, Tim Fifield said:
Can anyone explain the Lomax virtual short used for a GND neck and how it
would be used on an internal layer with 2 polygon planes? Can this be
I think I figured it out. What I did was just create a clearance rule for
those two specific net names for the 2 pads. Then I just connected the pour
with copper fills. It's not real pretty but I think it will work.
Thanks Ian for your help.
Tim
-Original Message-
From: Tim Fifield
Tim,
sounds like there are two possibilities for your problem.
1) The nets attached to the two pads don't match the polygon pours.
2) The polygon settings do not have the Pour over Same net checkbox
checked.
I am betting on the latter of those two.
You may have to do a
use IPC 2221, and use the coupons. This will allow you to follow the build
up of layers through plating and drilling. Any destructive testing can be
done on these avoiding having to destroy a sample of the production board.
Regards,
Ted
-Original Message-
From: Brian Guralnick
Brian,
yes there are various IPC coupons that can be used for all of your
issues. However in order to proper inspect those coupons you will have to
have the fabricator perform microsections (as opposed to you having to
slice the board) for you to verify the build. Sorry I don't know the
specific names of the IPC coupons, but your fabricator should. Sounds like
you your QA need a long chat with your fabricator, somewhere there is
something seriously awry.
Sincerely,
Brad Velander.
He was sued had to pay for my company's loss. I'm just trying to avoid such a
problem in
In a message dated 12/16/2002 2:30:48 PM Eastern Standard Time,
[EMAIL PROTECTED] writes:
Last year, I had a run of 1000 PCB's (4 layer) where 80% initially
passed QC, then 90% of the pass PCBs failed after a few days
of use. After exhaustive investigation, I cut right through the PCB
Brain,
as Ted had mentioned there are a bunch of them specified in
IPC-2221. In my version (Feb 1998) it starts at page 79 or 80. There area
number of specimens, most do not have specific purposes that match your
desired function but several would act as suitable indicators if
Tim
Instead of using fills go to your design rules, manufacturing, Polygon
connect style.
Set up a new rule for component, VS???, Direct Connect.
This should give you a complete pour over the pads.
Ian Capps
- Original Message -
From: Tim Fifield [EMAIL PROTECTED]
To: Protel EDA Forum
It's also worth specifying the pins to be bent around a certain radius
*away* from the neckdown; bending them too close, or allowing the
leads to bend naturally at the neckdown without a nice formed radius,
makes the swiny things fall off at the stress raiser caused by the sharp
bend,
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