By Kraig Mitzner
This ebook presents guide on the right way to use the OrCAD layout suite to layout and manufacture revealed circuit forums. the first aim is to teach the reader the best way to layout a PCB utilizing OrCAD seize and OrCAD Editor. catch is used to construct the schematic diagram of the circuit, and Editor is used to layout the circuit board in order that it may be synthetic. The booklet is written for either scholars and practising engineers who desire in-depth guideline on the best way to use the software program, and who desire history wisdom of the PCB layout procedure. KEY beneficial properties: * commencing to finish assurance of the broadcast circuit board layout procedure. details is gifted within the particular order a circuit and PCB are designed * Over four hundred complete colour illustrations, together with broad use of display pictures from the software program, permit readers to benefit good points of the product within the such a lot sensible demeanour attainable * hassle-free, life like examples current the how and why the designs paintings, delivering a entire toolset for figuring out the OrCAD software program * Introduces and follows IEEE, IPC, and JEDEC criteria for PCB layout. * distinctive bankruptcy on layout for Manufacture covers padstack and footprint layout, and part placement, for the layout of manufacturable PCB's. *FREE CD containing the OrCAD demo model and layout documents
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Extra resources for Complete PCB Design Using OrCAD Capture and PCB Editor
The parts of the footprint are Text: a. Assembly top (Comp Value) b. Silkscreen top (Comp Value) c. Assembly Top (Ref Des) d. Silkscreen top (Ref Des) e. Assembly top (Tolerance) f. Silkscreen top (Tolerance) g. Assembly top (User Part) h. Silkscreen top (User Part) Objects: 1. 2. 3. 4. Color button Place_Bound_Top (Package Geometry) Pin_Number (Package Geometry) Assembly_Top (Package Geometry) Silkscreen_Top (Package Geometry) You can change the visibility of the various parts of the footprint (and PCB as a whole) using the Color and Visibility dialog box.
These floating pieces can become EMI issues and should be removed. Note: When making changes that affect dynamic shapes some changes may not take effect immediately. To redraw shapes, select Display → Status → Update shapes from the menu. Manufacture Group a. Artwork—opens the Artwork Control Form dialog box, where you set up the classes and subclasses for which you want manufacturing data generated. b. ). c. NC Drill Legend—is used to set up then display the drill legend (drill chart). Drill symbols in parts on your design then also become visible.
The drill files are generated from drill settings that you specify in the NC Parameters dialog box (shown in Figure 3-15). The use of this dialog box is discussed further in Chapter 9. Project Structures and the PCB Editor Tool Set CHAPTER 3 Figure 3-15 NC (drill) Parameters dialog box. The number and types of files generated by the Artwork Control Form depends on the complexity of your board and the requirements of your board manufacturer. Most of the artwork files correspond to the layers with which you work in the layout environment, but some of the files do not.