There can be any number of sheets in a flat design.įirst image - the flat design has no top sheet second image - the same design has a top sheet. If one is included, it will have a sheet symbol for each of the sheets in the design, but cannot include any wiring. The use of a top sheet is optional in a flat design. The connectivity in a flat design is created directly from any sheet to any another sheet - this type of connectivity is referred to as horizontal connectivity. You can think of a flat design as if a large schematic sheet has been cut up into a number of smaller sheets - in a flat design all sheets exist on the same level. The technique used to connect a child sheet to the parent sheet is the same for both flat and hierarchical designs - it is how the connectivity is created that determines if it is a flat or hierarchical design. Your choice will vary according to the size and type of each project, and your personal preferences. the method employed for electrical connectivity between the circuitry on those sheets.the structural relationship of the sheets, and.There are two decisions to make if you plan to spread your design over multiple sheets: Another advantage is that when a design is structured over a number of sheets with fewer components on each, small format printing, such as laser printers, can be used. Breaking the design into logical modules greatly enhances the readability of the design too, an important consideration for those that need to read and interpret the schematic later in the life of that product. Maintaining these modules as individual documents allows several designers to work on a project at the same time. Even when the design is not particularly complicated, there can be advantages in organizing it across multiple sheets.įor example, the design may include various modular elements. This change means that even a simple design can be more easily displayed and understood if it is presented on multiple schematic sheets. Times have changed, now schematics are captured on a desktop PC, stored on a server, and printed on a small-format laser printer. When schematics were originally captured on paper, it was often on a single sheet of paper large enough to fill a big drafting table, which was reproduced on a dedicated, large-format copier. Parametric Multi-Channel Hierarchical Design.Synchronizing the Ports and Sheet Entries.
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