4 layer setup in Eagle PCB (standard edition)?

Community PCB Design
1

Hello All,

I’m trying to setup a four layer board (probably for BatchPCB). Is this the correct setup in Eagle:

((12)+(1516))

to achieve:

1 - signals

2 - GND

3 - Supply

4 - Signals

So if I want to route from the top layer to the supply it means:

1-> 4 → 3

As there’s no direct via from 1 to 3. Is this correct?

Thanks,

Leo

2

You should be able to put vias between the signal layers and power/ground planes. PCB software generally provides clearance round the pads on the inner layers where it is required.

Leon

3

Leon,

Thanks for that. Do you know if my layer setup is correct? Should it be ((12)+(1516)). From what I understand the brackets indicates possible via connections in Eagle. I’m planning on using BatchPCB.

Leo

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4

Sorry, I don’t use Eagle. Check the Gerbers with a Gerber viewer to make sure (I use GC-Prevue).

Leon

5

Leo,

The Eagle manual suggests (12+316) for 4 layers with through vias. That’s what I use and it works. I can connect to either power plane.

David

6

David thanks for the reply.

Looks like you have it correct except for the Eagle standard edition the setup is

(12+1516)

(layer 3 not available)

Thus the use of blind/buried via’s are not available (http://en.wikipedia.org/wiki/Via_(electronics)).

As an aside I priced adding 5 blind/buried via’s & it added $200 to the board!

Leo

7

What is the difference between (1+2)(15+16) or 1+2+15+16 or 121516??