![]() After that, when working with the rules, you can select the necessary profile for the group of circuits in a few mouse clicks. You only need to specify the target impedance the Layer Stack Manager will automatically select these parameters for you. ![]() With Altium Designer, you don't have to spend a lot of time calculating the impedance profiles and selecting the width and gaps of the conductors and planes. The PCB assembly shop would use this to make a stencil for the top side SMT pads. Top Paste is the layer that defines the paste mask for the top side Surface Mount component pads.If we are able to check with the manufacturer about dielectrics and metallic materials, information about impedance requirements can be found in application design guidelines. The design of multiple drawings is completed by placing a sheet symbol in the top-level schematic, as shown in the figure below. Mechanical layers can be obtained by iterating though the layers on a PCB document, and once a layer is determined as mechanical, the layer can. During this stage, we need to ask ourselves "will we be able to form an impedance structure with this set of layers?”. Altium Designer offers 32 general purpose mechanical layers for defining the board layout, placing dimensions on, including fabrication details on, or any other mechanical details the design requires. At this stage, we will define the internal design of the PCB that starts with deciding how many metal layers are needed, the PCB thickness, via types, and impedance profiles. From the beginning of the project to its completion, the designer must perform many operations related to each particular stage. One of the first stages is defining a PCB Stackup. Altium Designer offers a complete set of tools allowing the engineer to follow the PCB development path without leaving the design environment and without resorting to third-party programs. After project synchronization, we are ready to start the development of the printed circuit board.
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