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Re: hierachial Design
If u use the same circuit in different places on same design or use the same circuit which is used in another design instead of placing all the circuits manually.
In orcad capture this option is working well.
take the same placement in another design also possible...it...
Re: how can i change the diameter of the pade in OrCad layou
If u want to update the hole dia means,
select the component where the padstack needs to updated--goto spreadsheet-update the dia value which layer layer u want to update it.
But if u want to change the pad as a customised pad...
Is anyone knows that how tol create the assembly pdf file from cam using the different colors, like black color for component outline, red color for ref des..
50 ohm pcb trace
3 factors are heavily influenced for impedance calculation..
1.The height of the trace above the nearest ground plane should be minimum.
Less height means less radiation..
2.crosstalk dramatically various with nearest ref plane.Cutting height by half reduces the xtalk by 4...
padstack thermal relief
Thermal pads are used to make the soldering easier.A pad or via that is directly connected to plane represents the very efficent heat sink when trying to solder a connection.
Added after 3 minutes:
By reducing the amount of copper connectecd to the pad or via,you...
Re: Soldermask Over Via
For through hole components, u should add the mask for vias on both sides of pcb..
for BGA or uBGA, u should add the mask for vias on top side and open it on bottom side..
for BGA or uBGA, use overall masking on top side..
click the part table in tools menu in cel library where & which part u want to create the part table.
it 'll open new dialogue or table.click the part & add the value & part_ type in key table.
Add the description & part name in another table that is next to key table.
Save & close the table.
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