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Net Capacitance Constraint in the Constraint Manager

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Hi,
I'm trying to check all nets in my design for the capacitance, just like Display->Parasitics show the capacitance to shield layer. With the "extracta" command I can do that for my whole design using a command file and the NET_CAPACITANCE attribute.

But how can I set up constraint in the constraint manager doing this?

What I'm looking for is something like the pre-defined "impedance" constraint that lets me specify a target impedance and a tolerance, but for the NET_CAPACITANCE.

(I'm using SPB 16.5-s039)  


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