[PEDA] pb short-circuit beetwen pad and internal plane with protel 99se

[Abd ul-Rahman Lomax]

At 03:25 AM 7/13/2006, Didier Fabbro wrote:
>yes it's a 3,3 volts split plane and the pad in error is 24 volts
>i want to say that there are may other pad like this on the board...and why
>this pad ?
>the constraint for this pad is the constraint for all pads
>pads parameters : hole size 0,6mm x,y 1mm multilayer plated
>the plane clearance is 0,3mm
>the plane connect is 0,254mm for expansion width and gap
>when routing the 24v net i use a pad to go across the card
>and putting this pad on net it take automatically the name of the net!!

Yes, it does that. You can manually change it if you want, or if you 
put a pad down *not* on a net, it will then be assigned No Net, and 
that will not change if you move it.

You mentioned "label attached." What did you mean by that?

>visually protel shows the pad connected to 3,3v internal plane...i can see
>the air-gap arround the pad
>it's connected on the board...i have alas determined it!!!

Are you sure that you are seeing the air-gap? You might, for example, 
be seeing solder mask expansion.

Have you looked at the gerbers? Are the gerbers different from what 
the Protel display shows you?

(To check, load the relevant gerber file back to a Mechanical layer 
in Protel. You can then view the mech layer and the protel split plan 
together, using appropriate color combinations to make differences obvious.)