Le Jeudi 20 Octobre 2005 14:10, Ian bell a ¨¦crit?:
fluissman wrote:
Hi everybody,
I don't understand why there are a pair of layers with the same name:
xxCu and xxCmp. Which is the use for each one?
Cu means Copper ("Cuivre" in french).
This is the layer where you sold the component.
Cmp means "Component". It's the layer where you insert and see the
components.
Even if you do a single layer layout, then, the layer "Component" can
be considered as a manual layer you will use to put some strip wire
(so, I mean, nornal wire, but not copper on the pcb).
So, it's better you stay with 2 layers routing in any case.
I am confused about layers too especially as I am trying to do a
single sided PCB layour. As far as I can make out there are always at
least two copper layers - the one on the bottom xxCu and the copper
on the top or component side xxCmp. All other copper layers are inner
copper layers and labelled as such. Trying to get the autorouter to
route just on the copper side only is quite hard.
... and the utility of the layers ECO1 and ECO2?
According to the help ECO1 and ECO2 are general layers for anything
you want.
Ian
