You can have the inner layers setup as power planes or as just another layer.
Assuming you have them setup as generic layers,
change to one of the inner layers and create a polygon pour. Select the area (all of pcb if you want) and then you can give it a net in the polygon pour properties window (double click on polygon to get it).
You may also want to setup some polygon rules, you can have the clearance different for polygon pours etc.
You can also lock a polygon pour if you want to avoid clicking on it by accident
or you can shelf it and restore layer,
To create a area within a polygon pour where you don't want to fill, use the 'polygon pour cutout' object. Its in the menu somewhere. It just defines an area where a polygon is cutout and will not fill
If you have your inner layers setup as specific power planes then i'm not sure how you configure those.
I've never bothered to use them in that mode. I prefer the flexibility of generic layers
Yeah, it sounds like you have your layerstack setup for two layers and two planes, rather than just 4 layers.
I've never used plane layers, so i dunno how you make it work.
Planes are inverted. Poligon pour is to connect things together. So it is contradicting the very function it supposed to do, that is why it is not there.
Yeah, it sounds like you have your layerstack setup for two layers and two planes, rather than just 4 layers.
I've never used plane layers, so i dunno how you make it work.Planes are inverted. Poligon pour is to connect things together. So it is contradicting the very function it supposed to do, that is why it is not there.
Yes, I have two Layers and two Planes! 2+2=4 what should I do?
I can remove two planes, then add two Layers inside and set the inner layers as Ground and Power Planes.
Please, first understand what is the difference between a plane and a layer.
You just wrote: I remove the planes and add layers and set them to be planes.
Please, first understand what is the difference between a plane and a layer.
You just wrote: I remove the planes and add layers and set them to be planes.
did you load a 4 layer PCB from Layer Stack Manager? I mean from default setting in Altium. it has 2 layers and 2 planes.
I want to have 2 layers for signals and 2 layers for the ground and the power. what should I do?
I want to place Ground and Power planes in the inner layers.
Please, first understand what is the difference between a plane and a layer.
You just wrote: I remove the planes and add layers and set them to be planes.
did you load a 4 layer PCB from Layer Stack Manager? I mean from default setting in Altium. it has 2 layers and 2 planes.
I want to have 2 layers for signals and 2 layers for the ground and the power. what should I do?I want to place Ground and Power planes in the inner layers.So you already have a ground and a power plane... Why do you want to do something, that you already have?
Planes are constructed out of negative space. When viewing the plane layer, you can select the plane region and assign a net to it. It will then connect automatically with any vias and THT pads of the same net (indicated by a thin "X"), and clearance all other nets. Both behaviors are governed by the plane rules. Plane rules are not as flexible as polygon rules.
To make separate areas for routing your +5V and -5V nets, draw traces to outline their locations. When a closed shape is complete, select the plane regions and assign their nets accordingly.
Tim
Again: Dont use poligon pour, use solid region.
Using 'plane' layers is restrictive.
I recommend 4 signal layers and make your power planes on the middle 2 signal layers yourself manually using poursI almost never use planes myself, because often I find I need to place a trace anyway on the inner layers, even if they are "mostly" planes. So then you just need to do them as "layers". Easier to think about when all the actual PCB layers are drawn using the same "technology", instead of some of them working differently.
So maybe don't use "planes", just four identical layers - less confusion for you!
I can pour polygon around it without any problem (consider with 20 mil clearance)
also I should put ground layer under this layer. but this area should be ground free! this is my problem bcoz the sensitive nets are on the top layer!
the top layer has many nets and some of them are sensitive nets as you see above.
the second layer is the ground layer. but under these sensitive nets should be ground free!
3rd layer is the power layer.
4th layer is the solder side.
If I want to pour ground polygon in the second layer, this sensitive area will not be ground free! bcoz the nets are in the top layer and I'm in the second layer!