User manual CADSOFT PCB DESIGN EAGLE 4.1

[. . . ] EAGLE EASILY APPLICABLE GRAPHICAL LAYOUT EDITOR Manual Version 4. 1 ® 2nd Edition Copyright © 2004 CadSoft All Rights Reserved This software and documentation are copyrighted by CadSoft Computer, Inc. , doing business under the tradename EAGLE. The software and documentation are licensed, not sold, and may be used or copied only in accordance with the EAGLE License Agreement accompanying the software and/or reprinted in this document. This software embodies valuable trade secrets proprietary to CadSoft Computer, Inc. All trademarks referenced in this document are the property of their respective owners. [. . . ] This check can be switched on or off in the Design Rules (Misc tab). Restrict: A wire drawn in layer 1, Top, or 16, Bottom, or a via lies in a restricted area which is defined in layer 41 or 42, t/bRestrict. Width: Minimum width violation of a copper object. Defined by Minimum Width in the Design Rules (Sizes tab) or, if defined, by the track parameter Width of a referring net class. Also texts in signal layers will be checked. Wire Style: The wire style of a wire which is connected to a signal is not Continuous. Net, device and pin lists can be output by means of EXPORT or by various User Language programs. Creating Manufacturing Data Prints of the layout can be created for purposes of documentation using the PRINT command. Layers that have been activated with DISPLAY are printed. The printout has the same appearance as the layout has on the screen. Exception: Origin marks of texts and grid lines are not printable. The manufacturing data is typically generated with the CAM Processor. A variety of drivers are available to create drilling data, Gerber data, plotter data and so forth. We will return to this subject in a specific chapter later. In order to save costs, it may be worth supplying the layout to the board manufacturer in the form of a multiple board. You can reproduce the layout to create a multiple board with the GROUP CUT and PASTE , commands. It should be noted that this will change the board's silk screen, since devices and signals receive new names when the layout is placed. Ensure that all the layers are displayed before using the GROUP and CUT commands. 120 From Schematic to Finished Board Any other data format can be created with the aid of ULPs (User Language programs). See the short description of ULPs in the Control Panel. 6. 4 Multilayer Boards You can develop multilayer boards with EAGLE. To do this, you use one or more inner layers (Route2 to Route15) as well as the layers Top and Bottom for the top and undersides. Before starting the routing of the layout you should be aware of the number of signal layers to use, if vias should go through all layers, or if you have, due to the complexity of the layout, to work with blind, buried or micro vias. In this case you realy ought to contact your boardhouse to inform you about the possible structure of the board and the resulting costs to be expected. Also think about how to use the inner layers: As a normal inner signal layer or as a supply layer? [. . . ] Error Messages When Loading a File Library objects with the same names. The text editor shows this message if you attempt to load an older file (BRD or SCH) that contains different versions of a library element. to the names of the devices so that they can be identified. This message can also appear if you use CUT and PASTE commands. 241 EAGLE Manual Pad, Via Replaced with a Hole In older versions of EAGLE it was possible to define pads in which the hole diameter was larger than the pad diameter. If you attempt to load a library file that was created with an earlier version and that contains such a pad, the following message appears: The pad or via is automatically converted into a hole, provided it is not connected by CONNECT to a pin in one of the library's devices. [. . . ]