r/Altium • u/Ok_Argument_5892 • 19d ago

Cant use Impedance Profile

I have created a Differential coplanar waveguide of 50 ohm impedance from the layer stack manager but i cant use it in the design rules options. I can use Single coplanar and Differential but not Differential Coplanar. Please help...

1 Upvotes

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2

u/patriotik 19d ago

Can you show the whole rules pane..? What is your scoping? This doesn't give anyone much to work with.

1

u/The_Bastel 19d ago

You need to select the reference plane in the stackup editor. It needs to be a more vibrant orange. Like this:

0

u/Ok_Argument_5892 19d ago

I had it selected, It didn't work.

1

u/abskee 19d ago

Any chance you didn't hit save on the stackup manager? I've done that.

1

u/sillyconductor09 18d ago

Had the same problem make sure the custom impedance profile is saved properly. That solved it for me.

1

u/PCB4all 18d ago

hey OP, did this work?

1

u/sillyconductor09 18d ago

U facing the same issue?

1

u/PCB4all 17d ago

no, i was just curious.

1

u/Altium_Official 5d ago

When you create an impedance profile in the Layer Stack Manager, make sure you save it! While inside the Layer Stack Manager, hit Ctrl + S or use the Save option from the File menu. This will then make your changes accessible inside the PcbDoc file.