Need help ！

1. How can I check whether the differential pairs have kept the exactlly impedance ? Can I check in CAM350? How can i check with the gerber file?

2. How can I check whether there are something have caused a short on plane layer?

I think that "drc" order can help you！

I think the first problem couldn't be checked in cam350~~~

and the second problem could be checked in cam350,in the second menu"drc".

But how  can the DFM report the problem about the impedance control of differential pairs?

is the DFM  one of the partition of CAM350?

Pls see the attached graphic, that would be cause a short there on the plane. pls tell me how can i check it?

I always use DRC check the error, but i cann't check it out, why?

One issue, that's a positive plane----GND,  Thanks a lot.

anyone here pls help me, thanks

good guys? where? help me, pls

I have got the key , in CAM350 V9.0, there is a DRC check for drill to copper( it isn't in CAM350 V6.0), that should be checked out by using this function. At the same time, I also use the "check nets" funtions for this issue, but it looks like nothing happened to show me the good result, so my question is what the "check nets" function is? Could we use for check the net short? but why cann't i check out the issue for drill to copper?

And I am looking forward to get the answer for checking the impedance control for differential pairs, who can talke aout it?

On the other hand, pls also talk about the DFM ,  which software we should use for DFM checking? and what's the program in DFM checking?

Hope for the answer or discussion ,  thanks a lot.