Muhammad,
In addition to what Peter wrote about changing part layers, "L" also will
change layers while placing the footprint/land pattern.
With regard to rooms, rooms are separate area definitions that can be
used within the board outline. When you update or synchronize your schematic to
the PCB there is a check box in the lower part of the configuration window. If
this checkbox is checked, Protel will automatically generate a separate room
for each page of your schematic. Most people usually uncheck this box and if
they want to use rooms they define them manually later on.
I was stumped on your short circuit constraint violation but Peter's
idea sounds like the most plausible cause of the error.
Sincerely,
Brad Velander
Senior PCB Designer
Northern Airborne Technology
1925 Kirschner Rd.,
Kelowna, BC, V1Y 4N7.
tel (250) 763-2329 ext. 225
fax (250) 762-3374
-----Original Message-----
From: Peter Bennett [mailto:[EMAIL PROTECTED]
Sent: May 26, 2005 7:56 AM
To: Muhammad Nazir; Protel EDA Discussion List
Subject: [SPAM] - Re: [PEDA] Protel layout questions - Email found in
subject
Muhammad Nazir wrote:
> Hi
>
> I am new to using Protel. I captured my design in a schematic and then
> updated my PCB file. I got the following errors:
>
> 1- Violation between SMT Small Component R14(4840mil,4540mil) on Top Layer and
> Room Amp-CFD5 (Bounding Region = (7475mil,
> 3180mil, 22145mil, 3770mil)
I usually delete the rooms - they are apparently useful on multi-channel
designs, but may cause problems on simpler jobs.
> The above error appears as soon as a components is dragged onto the
> PCB board for placement from the block on the side of the board
> outline. It seems that the software takes this block as the 'room'
> rather than making the board outine its 'room'.
>
> 2- I have an IC which is a QFN package with 32 Terminals, Body 5 x 5
> mm and Pitch 0.5 mm. Four pads of this IC have a short circuit with
> their own selves as shown by the following error.
> Short-Circuit Constraint (Allowed=No) (All),(All)
> Violation between Pad CMP1-12(4425.158mil,4215.984mil) Top Layer and
> Pad CMP1-12(4425.158mil,4223.465mil) Top Layer
Looks like your footprint has two pads called "12" at the same position. Go to
the PCB library editor and delete the extra pad.
>
> 3- I want to place components on both sides of the board but the
> software does NOT let me place the components on the bottom layer
> although I can see it (as a single layer as well as a multi-layer). I
> did tell the software that I would put comonents on both sides when I
> used the wizard to create the board. Could anyone let me know what am
> I missing here?
I think you hit "*" on the numeric keypad while placing a part to flip it to
the other side. Otherwise, hit "tab" while placing the part - there is a layer
selection on that form.
>
> I appreciate your help in advance.
>
> Thanks
>
____________________________________________________________
You are subscribed to the PEDA discussion forum
To Post messages:
mailto:[email protected]
Unsubscribe and Other Options:
http://techservinc.com/mailman/listinfo/peda_techservinc.com
Browse or Search Old Archives (2001-2004):
http://www.mail-archive.com/[email protected]
Browse or Search Current Archives (2004-Current):
http://www.mail-archive.com/[email protected]
