Cloning PCB Wiring Card Layer Definition

When Cloning PCB wiring card, the layer in the Protel software is not a virtual one, but the physical existing copper layer among the pcb wiring card. nowadays, due to the components installation density has increased dramatically, accompany with the anti-inteference and special requirement from the layout, some of the newly introduced electronic product will apply with double sided layout, and among the board you can also find the clapping copper with special processing, for example, the computer mainboard used in nowadays are all layouted more than 4 layers.

these layers will be installed the layout with less complicate power supply layer due to relatively high difficulty of processing or other reasons, and will normally use large area of copper filling method for layout such as External P1a11e and Fill. the top and bottom layers in the layers which will be required to connect with the internal layers must be connected by vias which can be layouted by software.

Quite a few people will find that some of the Pads in the end lack of the connected wires, that is because the designer has already forgot the layer concept when establish and input the library, without define the pad as multilayer PCB wiring card. and alos there is one thing we need to remind the designer, once the layer count of pcb wiring card has been chosen, it is better close off other unnecessary layer to avoid troubles.