Design Circuit Diagram 1. Under the initial interface, create a database for administrative items. Then open a new schematic. At the same time, set the size of the drawings according to the complexity of the actual circuit, and establish a working plane. After completing this step, the environment automatically switches to the schematic design system. 2. Place the various components, images, network labels such as the circuitry. Menu Place Combined with the various principles of Protle 99, various principles, plurality of editing functions, etc., numbered, or port, etc., and adjust, modify, modify, and define the components on the position of the component on the working plane. set up. 3. If the component to be placed does not exist in the library provided by the system, you need to start the library editor SCHLIB to establish the principle of the device. 4. The wiring of the schematic. Connect the device on the work plane with the electrical meaning, the symbol is connected to form a complete schematic. 5. Edit and adjust. Further adjustments and modifications to the schematic drawings to ensure the aesthetics and correctness of the schematic. This process includes the re-adjustment of the component position, deletion, movement, changing graphics size, attributes, and arrangement of the wire position.
Design Printing Edition 2. Settings for parameters. Mainly set automatic layout parameters, automatic wiring parameters, panel parameters, etc. 2. PCB board size design. On the prohibition of the wiring layer, the edge of the PCB plate edge edge is designed to specify the range of automatic layout. This step is the foundation for automatic layout. At the same time, the copper wire is placed in the upper layer panel (i.e., the emitting device surface), the copper wire is placed on the border of the wiring layer, which is the last molding of the PCB board. 3. Layout. The layout is based on the connection relationship between the components of the principle, and considers the electromagnetic compatibility and the installation space and heat dissipation of the components, always placed the components on the PCB board. The quality of the layout directly affects the electrical performance and cloth energy rate of the PCB board, which is the most cost-time and cumbersome in the PCB board design. The layout work needs to be patient and meticulous. Although the system provides the function of automatic layout, manual adjustment is required. I. Handmade layout. First, the network table generated by the SCH is first implemented by manually moving the components in the PCB board. It is best to open the network connection when moving components, which can observe the sink of the adjacent component connection. II. Automatic layout. The PCB system environment provides automatic layout feature completed components, but it is best to use manual adjustment at the detail. When the layout requires multiple components that are more connected to each other should be placed; the components that may cause interference should be away; the power devices should consider the heat dissipation space. 4. Wiring. The wiring is a process of placing a copper coil between component pins, which can be done by manual completion or automatic. Before the wiring, the designer must first set the wiring parameters to define wiring rules. 5. Start design rules Check DRC, which checks the PCB board that completes the wiring by using the BRC function provided by the PCB. In the report file * .Rep, the PCB software is displayed on the PCB map, which is easy to check and modify. 6. Board characters adjustment. In order to make the design of the PCB board, and the installation of the welding element is convenient, the character parameters such as the component, the design value should be moved to the components frame. Size is appropriate and characters do not want to overlap each other. Design Database (Design Database) file, the extension is .ddb, this file is actually all the files containing a design item and the development team management information, encapsulated in a "big file", and also established a standardized File management system. The library * .lib file of the required component must be made before generating the PCB board. Try to place the heart on the origin when placing the component. Place the component in the least position of the minimal position in the county. Try to avoid the right angle and acute angle when wiring. Change the clearance constraint in the rule when paving copper. Select ViOLATIONS in the Browse PCB to display and explain each conflict, making it possible to correct one by one. If you encounter the SCH file change, the original PCB file should be deleted and the UPDATE operation is performed. When there is a larger area of VCC or GND, both sides can be properly played. Manual adjustment is best to use the Tools -> ALIGN Components -> Move to GrID command in the main menu. Auto alignment is to move the pin of the component to the grid position, which allows the wiring to be more neat and reduces the wire. When the wiring is lost, the network table property can be quickly recovered when the wiring is lost by copying, and the endpoint II with network properties is found. Select a line III that connects to the endpoint. Click the drag point of the two ends, click Once, you don't need to move the mouse IV. Click on each connection point until the entire line is turned on.
