Hi,
My customer wants to make his own mmwave board and,he read the following document.
http://www.ti.com/lit/an/spracg5/spracg5.pdf
He is wondering about the two through-hole diagrams in 2.1.1 PCB Stackup.
One is orange and the other is gray. What does this color difference mean?
Please let me know if you do not mind.
Best Regards,
Takuma
