By Kraig Mitzner (Auth.)
This publication offers guide on how you can use the OrCAD layout suite to layout and manufacture revealed circuit forums. The booklet is written for either scholars and practising engineers who desire a fast instructional on easy methods to use the software program and who desire in-depth wisdom of the functions and boundaries of the software program package deal.
There are objectives the e-book goals to reach:
The fundamental aim is to teach the reader how you can layout a PCB utilizing OrCAD seize and OrCAD structure. catch is used to construct the schematic diagram of the circuit, and format is used to layout the circuit board in order that it may be synthetic.
The secondary target is to teach the reader how one can upload PSpice simulation services to the layout, and the way to strengthen customized schematic components, footprints and PSpice versions. from time to time separate designs are produced for documentation, simulation and board fabrication. This booklet indicates tips on how to practice all 3 capabilities from a similar schematic layout. This process saves time and cash and guarantees continuity among the layout and the synthetic product.
· details is gifted within the specified order a circuit and PCB are designed
· user-friendly, reasonable examples current the how and why the designs paintings, supplying a finished toolset for knowing the OrCAD software program
· advent to the IPC, JEDEC, and IEEE criteria in terms of PCB layout
· Full-color inside and huge illustrations enable readers to benefit good points of the product within the such a lot reasonable demeanour attainable
· loose CD containing the OrCAD demo model and layout documents
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Additional info for Complete PCB Design Using Or: Cad Capture and Layout
Controlling the autorouter There are three general types of CAD autorouters: grid-based, shape-based, and topological. OrCAD Layout is a grid-based router (although SmartRoute--an optional add-on to Layout-is a shape-based router). Simply put, grid-based routing characterizes a board space in terms of grid coordinates, starting and ending points (pins) for each net, and locations of obstacles. The grid-based router attempts to route traces on the grid while avoiding obstacles and obeying specific design rules.
3-13(a)) and the active layer control dropdown list (Fig. 3-13(b)). The cursor's coordinates (the default is mils for most boards) are in relation to the board origin. The place grid setting determines how fine your control is when placing your parts. The smaller the grid number the finer the control. You should use the default value for the board technology of your board when possible. If you use a smaller grid setting there is an increased risk of introducing design or manufacturing errors. , working with footprints with pins that are not a standard pitch).
Select Post Process S e t t i n g s from the O p t i o n s menu (see Fig. 2-23). A postprocess spreadsheet will pop up (shown in the background of Fig. 2-24). You can use the spreadsheet to enable specific layers and define the Gerber file format. To modify a layer's settings, left click once on the layer in the spreadsheet to select it and then right click on it and choose P r o p e r t i e s from the pop-up menu (or double click the layer name). From the Post Process S e t t i n g s dialog box (Fig.
Complete PCB Design Using Or: Cad Capture and Layout by Kraig Mitzner (Auth.)