Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Strange FREE VIA problem! (OrCAD Layout)

Status
Not open for further replies.
E

electronZ

Member level 2
Member level 2
Joined
Apr 11, 2010
Messages
43
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,286
Activity points
1,602
Hi all :)

I use free vias in orcad layout to connect different layers. I place the vias and I give them a net name. But, somehow the vias losses their net after some time! I suddenly have many vias without any nets!

can anyone help? thanks :)
 

can u explain it clearly..with any pic..?
 

    V

    Points: 2
    Helpful Answer Positive Rating
Yes, it might happen for no reason :( You have to reconnect those free vias again by connetion tool.

Regards,
androm
 

I´m not experienced with OrCAD.
However, at some CAD design tools ( Protel, for instance ), whenever you update design ( SCH->PCB ), all components not related in schematic, loses net atributes.

You must check configuration options.
At Protel, is possible to avoid that condition.

+++
 

    V

    Points: 2
    Helpful Answer Positive Rating
I do have experience with OrCAD Layout. The thread's name describes the problem as clearly as it is - this is a strange problem indeed. If just a couple of free vias involved you couldn't face any trouble at all but if more free vias are used (to stich two polygons on top/bottom layers) then some amount (not all free vias at the same time) accidentally may become unconnected. If they can be simply re-connected to appropriate net you may hope that will not happen again.
 
Hi,

I am also new to Orcad. I m using 16.0 version.
For one of my regulator IC, I need some thermal via. I tried to add a via and ground pore near to it, but was not successful. Can you please give me the steps to add a free via, (other than on tracks) for this purpose ?

Thanks
Sreejith
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top