Re: How we can convert PCB file to schematic file on Protel DXP

Okay Usman,
Your task is not quite so daunting then. Yes as Peter mentioned, you can
probably get your values from the comment field of the parts within the PCB.
That is the usual location for the values to end up in if you used the Part
type field in the original schematic. You could also use the output tools to
generate a BOM from the PCB and include any information that was passed
through to the PCB parts through parameters or any other means.

Then of course you will also need all of the original symbols, should be
simple as long as you had a library that wasn't deleted. Then the
interconnects more or less manually, then check the schematic against the
PCB until you get no changes being performed as an ECO between the schematic
and the PCB.

Your earlier comments sounded like the rookie or someone expecting a
single push button solution, hope you didn't take my comments too harshly.
--
Sincerely,
Brad Velander.

"Peter Bennett" <peterbb@xxxxxxxxxxxxxxxxx> wrote in message
news:qi1q139kkno33kpd92ed7531vu55eal5rd@xxxxxxxxxxxxxxxxxxxxx
On 11 Apr 2007 02:14:36 -0700, "waatage" <waatage@xxxxxxxxx> wrote:

Brad,
Thanks for your reply,
BUT
Actually by mistake ,i delete my design which i made on
schematic, but i have its PCB and PCB's layout. Now i dnt remeber the
acutal values of resistors and capacitors and their interconection
with other components,
Thats why i asked for the method to get back my schematic
from my layout.

I knew that doing reverse engineering ,i can get that
interconnections but still i wouldnot be able to have the values of
resistors and capacitors
.
So if u know any advance method for this please tell me,


With regards.

Usman

I've used Protel 99SE, not DXP. In 99SE, I think there may be a way
to produce a bill of materials that would include the component value
(but I've never used it...). If not, you can examine each component
on the PCB and look at its "comment".

Did you not print the schematic before designing the board? You
should also be able to find backup schematic files somewhere.


--
Peter Bennett, VE7CEI
peterbb4 (at) interchange.ubc.ca
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