Eagle 6 layer PCB design

Le 22/01/2011 23:43, Sandeep a écrit :

Hello everyone!

I am designing a 6 layer PCB in eagle. I am finished with the routing

already. I have few queries and I would highly appreciate if someone could

clarify it.

 

1. I have used a polygon for ground plane and named it as $GND. I have also

named all the ground nets as GND. However after creating a polygon and

clicking on ratsnest tool, all the ground nets are still not connected to

ground plane? Why?

$GND and GND are not identical name, rename your polygon GND and it will

be OK I think

 

2.After checking for DRC errors, I'm getting 1700 errors!!! Most of them

are clearance issues. I can't manually fix all of them. Should I change DRC

clearance setting?

You can change the DRC settings but you must respect the clearance/wire

size / pad size / via size /drill size your pcb manufacturer can reach.

First thing to do, ask your pcb manufacturer all minimum size/clearance

your pcb can have, and after you can modify your DRC with these value.

3. I routed critical parts manually first and then I tried to use

autorouter however it routed all the airwires again and autorouter did not

take my manual routing into consideration. What I thought was it would

route only the airwires which I din't route manually. Any clue on this???

I don't no I never used autorouter !

Regards

Cyril HAENEL

 

I have few more questions but I would wait for someone to reply first.

 

P.S. I have .sch and .brd file for my design. If someone would like to have

a look and give me suggestions then I would be more than happy to upload it

here.

Le 22/01/2011 23:43, Sandeep a écrit :

Hello everyone!

I am designing a 6 layer PCB in eagle. I am finished with the routing

already. I have few queries and I would highly appreciate if someone could

clarify it.

 

1. I have used a polygon for ground plane and named it as $GND. I have also

named all the ground nets as GND. However after creating a polygon and

clicking on ratsnest tool, all the ground nets are still not connected to

ground plane? Why?

$GND and GND are not identical name, rename your polygon GND and it will

be OK I think

 

2.After checking for DRC errors, I'm getting 1700 errors!!! Most of them

are clearance issues. I can't manually fix all of them. Should I change DRC

clearance setting?

You can change the DRC settings but you must respect the clearance/wire

size / pad size / via size /drill size your pcb manufacturer can reach.

First thing to do, ask your pcb manufacturer all minimum size/clearance

your pcb can have, and after you can modify your DRC with these value.

3. I routed critical parts manually first and then I tried to use

autorouter however it routed all the airwires again and autorouter did not

take my manual routing into consideration. What I thought was it would

route only the airwires which I din't route manually. Any clue on this???

I don't no I never used autorouter !

Regards

Cyril HAENEL

 

I have few more questions but I would wait for someone to reply first.

 

P.S. I have .sch and .brd file for my design. If someone would like to have

a look and give me suggestions then I would be more than happy to upload it

here.