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Finding Components in P-Cad

Discussion in 'General Electronics' started by kl1k, Sep 15, 2004.

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  1. kl1k

    kl1k Guest

    I've download the trial version of P-Cad and am busy fiddeling with a few
    schematics.

    I've read thru some of the tutorials but am still clueless on how you find a
    specific component in all of the livrary files they give you.

    Are you supposed to load all the libraries and then do a query for the
    compenet you want? Surely there must be a easier way?
     
  2. Sam B.

    Sam B. Guest

    Back before I was working, it took me a good number of 12-hour
    days--about two weeks worth, in fact--to get comfortable in PCAD 2002.
    I'm sure that you will figure it out if you keep after it. In
    answer to your question, only load the libraries which contain the
    components that you want. The libraries which you can download
    directly from PCAD usually have descriptive names, so you will know
    what you are looking for. Later, you can make your own libraries
    with Library Executive. When you select the component placement tool
    in the toolbar (PCAD Schematic), a dialog box will pop up which will
    also give you the option of going into the "library setup". From
    there, you can add or remove specific libraries from the dialog box.

    But let me tell you a little secret...PCAD does not supply library
    patterns for every component in the world...so you will need to learn
    how to make your own. If you want to do this, open up Library
    Executive and open up a component similar to the one which you want to
    make. This way, you can see how they do it. You can make any
    component pattern in Library Executive, with the help of the Symbol
    and Pattern Editor, whether it is a DIP, SO, array, quad package, or
    just random pads of different sizes and shapes.

    If you ever want to lay down different types of pads in Pattern Editor
    or PCB, etc, you have to go up to the title bar and select Current
    Pad. This will open the dialog box for the types of pads currently
    included in the project. You can then copy a pad style, and modify
    it to suit your tastes, be it a SM pad, through-hole, etc.

    This general process that I follow when using PCAD makes my job
    easier:

    1. Make sure that you have opened all of the component libraries in
    Schematic that you will need. If extra components need to be
    created, then do so.

    2. Create your schematic in the Schematic program.

    3. Generate a netlist under the Utilities tab.

    4. Go to PCB and make sure that all of the same component libraries
    are opened (netlist will not load correctly otherwise).

    5. Under the Utilities tab, load the netlist file.

    6. Route your board with the manual routing tools (located in
    toolber).

    7. Setup your output files by going to File>>Output>>Gerber or NCR to
    setup your gerber and drill files. Different board houses require you
    to use different settings for the drill file. Usually you have to ask
    them what they require.

    PCAD can be difficult program to master, initially, because there is
    so much to it. But as you get more practiced, it gets much easier
    and much less frustrating. It is a very powerful program. The
    company that I work for likes to hire people who are comfortable with
    PCAD.

    Best Regards,

    Sam B.
     
  3. kl1k

    kl1k Guest

    Sam,

    Thanks for the reply.

    Idid some searching on the pcad site and they offer a search facility. You
    search for the component and they tell you which library its in.

    I know what you mean about not finding all componets. I've been looking for
    a resistor array - no where to be found :(

    I'll follow your suggestion.

    Thanks
     
  4. kl1k

    kl1k Guest

    Sam,

    Another question for you on P-Cad :)

    How you do place a "No Connection" symbol.

    In Orcad if a pin is not connected you place the NC symbol on it, otherwise
    the ERC rules complain.
    Is there something similiar in P-Cad?

    Cheers
     
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