Clik here to view.
Schematic file not paste in OrCAD 9.2 ???
Hi.. I had drawn schematic in OrCAD 16.0, in that i had copied the content of that schematic and try to paste it in OrCAD 9.2.But when i tried to paste it the capture 9.2 was closed...
View ArticleClik here to view.
Cannot generate a working silkscreen artwork
Hi, I'm new in Cadence and I'm currently using Allegro PCB Editor v16.3. I was able to generate the drill file, top and bottom etch artwork with no problem. However, when I try to generate the...
View ArticleClik here to view.
MIL-STD-1553 trace routing
A lot of boards I have done over the years have used MIL-STD-1553 communications. Normally these were boards where the coupling transformers were located close to the connector. The manufacturer of the...
View ArticleClik here to view.
Artwork Log Message(Photoplot outline rectangle not found)
Hello,I am getting the following message in my ViewLog file when I generate the Artwork files "Photoplot outline rectangle not found ... using drawing extents" not able to understand what exactly it...
View ArticleClik here to view.
How to reduce the file size of .brd and/or remove unused embedded symbols
I'd like to reduce the size of my .brdand I've found that I've got some embedded symbols/pads which are not used anymore (my .brd has been upgraded from an old project with different mechanical...
View ArticleClik here to view.
Output impedance of a buffer
Hi,Could anyone suggest a method to determine the output impedance of an iocell from ibis curves. The values from V/I curves are far from exact and the Trial and Error method is rather time...
View ArticleClik here to view.
Sanity Check how do I Compare netlist from capture and Allegro.
In other PCB/SCH tools I have used it was possible to generate a netlist from both the schematic and then from the completed board so as to verify the actual board did indeed match the...
View ArticleClik here to view.
no rats showing after running netlist in Capture??? **HELP***
Never had this happen before, but I ran the netlist, and opted to start Allegro. I statred to place components manually and noticed no rats. I checked the show rats all and still no rats. What is...
View ArticleClik here to view.
Allegro Viewer will not start after upgrade
I just upgraded from allegro_free_viewer_16-5 to allegro_free_viewer_16-6. Right after the upgrade it worked fine but today I keep getting the message This application has failed to start because...
View ArticleClik here to view.
Routing from a via
Updated to the latest service pack and I'm seeing a problem I have not run into before. Maybe I'm doing something wrong, but....Below picture shows pairs of pins routed out to vias on the top layer....
View ArticleClik here to view.
Through Hole, both side routing.
Hello,it may look stupid question but I am stuck with it. I have a through hole connector on my 2 layer board for hight current (track width 5mm)I would like to rout the track on both layers, of the...
View ArticleClik here to view.
Shape selection
When I have a shape for example a rectangle on the board and I pass the cursor over it the commands to do move,copy,rotate only become active via a RMB at the edge of the shapes bounding box. Was...
View ArticleClik here to view.
OrCAD 16.3 dsn Format is not opening?
Hi...I had drawn the schematic in OrCAD 16.3. but it was not opening in the OrCAD 9.2.But i read that in the forum, that want to save the format in previous version of it. So I dont know how save the...
View ArticleClik here to view.
donut pad shape
Hello,I want to know how to create a donut shape symbol.It seems shape symbol can not hava a void in a shape.So how can I create a donut pad?thanks.
View ArticleClik here to view.
Routing in 16.6
I am interested to find out how many ( if any ) are a bit annoyed by the new feature in Allegro 16.6 that when routing, if you change the size of the track to something other than the default size, it...
View ArticleClik here to view.
Where are all the classes/sub classes gone for "Dimension in 16.5, 16.6" ?
Hi guys, for some reason I am unable to add dimensions to the package sub class and a whole buch of others too. Seems like the dimension classes/sub classes have been reduced to only a few classes in...
View ArticleClik here to view.
Starting Orcad 16.5 ...
Hi,I am using orcad 16.5, i need your help for starting it...i have drawn two led with power source gnd and vcc but for led pcb footprint i doulble click on led symbol it ask forPCB FOOTPRINT..so,...
View ArticleClik here to view.
Stroke command w/o holding ctrl button?
Is there a way to set the pcb editor to allow stroke command without the the need of holding the ctrl button?
View ArticleClik here to view.
Merging of PADs with Ground plane
I have a board with the GND copper filled. I am using Allegro PCB design L (Legacy)There are the PADs of the componets which has to be grounded, are right now gets connected to the GND plane with the 2...
View ArticleClik here to view.
Lower case letters for schematic capture
Is there a way we can put lowercase letters on schematic capture? I need this in putting in unit values. I'm currently using 16.6 version
View Article