PCB Libraries IPC-7351 LP Suite User Guide(3)

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WizAttrib=Manufacturer

WizAttrib=Mfr Part Number

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3.2 Creating Multiple .DAT Files

Using the “Open User Profile” you can either create a new .DAT file or open an existing one. This way you can have various .DAT files for different projects or customers. To create a new User Profile .DAT file, select the first Tool Bar button on the main menu.

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3.3 Setting Search Preferences

Depending on what CAD tool you use, you must setup your “Default Preferences” Open the Search Library Menu, Select the “Search Library” Tool Bar Button.

Next select the Preferences

Tool Bar Button

The .P files are your Library Attributes used for searching parameters. The more detail you put in the Attributes, the more “Keywords” you’ll have to search with.

For more detail, see Chapter 10 – “Creating Attributes”.

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The Library .P files are originally placed in the default folder:

C:\Program Files\PCB Libraries LP\CAD Data>

You can relocate these library .P files to any folder that you want, but remember

that PCB Libraries is constantly updating the master files and when you install LP Suite updates the new library .P files will always be placed in the same folder. The folder “search path” for the library files is stored in the .DAT file with all your “User Preferences”.

Use this “Search Preferences” menu to load “Add” all your library .P files once you have them in the folder of your choice.

Similarly you can “Remove” any Library Files from your search list.

You can also arrange the order of your libraries by selecting a library and then

select the “Up” & “Down” buttons. Users tend to put the most used libraries first.

Once your libraries are loaded and in the correct order select the

“Save Preferences” Tool Bar Button and then select the Close

Button.

3.4 Setting Calculator Preferences

Every Component family has their own unique preferences. We are going to

review how to change the preferences for the SOIC component family. The same procedure can be preformed in any of the component families.

Select the SMD Calculator Tool Bar button (In the Red Box below)

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The “Select Part Type” menu will appear. Select the Small Outline (SOIC) line and

“Double Click” or select the “OK” button to open the SOIC menu.

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Select the Preferences

Tool Bar Button

to open the SOIC Preferences Menu

Select the “use my settings” check box to change the fabrication and assembly

tolerances and the Minimum Allowable G & Gx dimensions.

Then in the Environmental Variables use the pull-down bar to select “USER”.

Then you can change the User Preferences for Toe, Heel and Side Goal,

Courtyard Excess and X Roundoff (X = the pad width).

Caution: If you change any of these numbers, you automatically fall out of

compliance with the IPC-7351 specification and you are on your own.

Select the Help

Tool Bar Button if you need “Help”

Tool Bar Button and then select the Close

Button “Save Preferences”

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If you do not select the Save Preferences

will appear when closing this menu

Tool Bar Button the menu below

For this exercise select “NO” In the Calculator Select “USER” Preferences

3.5 Setting Wizard Preferences

Setting the Wizard Preferences allows you to establish your Default Attributes,

Library Name and Library Path.

In the SOIC Calculator select the “” and the Wizard Button will

become enabled.

Select the Wizard

Tool Bar Button

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IPC-7351 LP Calculator User Guide

SETTING UP USER PREFERENCES

PCB Libraries, Inc.

3-13 of 65

3/7/2005

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Select the Preferences

Tool Bar Button to open the Wizard Preferences Menu First let’s set the “Library Directory” path and “Library Name”.

Select the “Automatic” Button if you are a PADS User for direct to PADS Import. If you do not use PADS, select the “Manual” button, uncheck “Create Decal” button If you want to save all your component dimensional data, select the “Update CAD data only” so that the IPC-7351 LP Librarian can continually update your USER

Library with all new component information that you enter into the calculator.

In the Part Attributes window select the “Add” button to add a new custom attribute

A good example is “Corporate Part Number” which would be used for your

company’s part numbering system. Once you create an Attribute, it will appear every time you build a new CAD land pattern.

Select the OK button when the new attribute is entered.

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Select the Close

Tool Bar button and the “Save New Settings” box will appear.

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When you want to enter a value to an attribute Double Click on the Attribute you want to edit “Corporate Part Number”.

When you Double Click on any Attribute, the “Enter new Value for:” dialog box will appear

The default Attributes cannot be removed because the IPC-7351 LP Wizard depends on their existence to function properly. The Description, Manufacturer and Mfr Part Number are self explanatory but some Attributes need an explanation.

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