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In Exercise 5, you learned how to generate a report on any library components changed after placement. In this exercise, you will learn how to verify the component attributes in the design and generate a difference report directly. The design components may be updated automatically to reflect these library changes. Then we will look at the best way to update any changes to the library.

A design has been worked on for the past few weeks. We want to check that changes made to the component library do not critically impact your design.

The report in Exercise 5 lists all library components modified after the design placement date, whether or not they exist in the design. The difference report generated in this exercise lists only components with attribute discrepancies between the design and library.

1. Run PCB, select File Open and select the DEMO_U.LIB file
2. Double click on an existing component and view its Attributes. This will give an insight into what has changed after we finished the Exercise.
3. Design components are verified against all open libraries in the Open Libraries list. In this case we will just compare against the DEMO.LIB library so modify the Library Setup appropriately.
4. Choose the Library Verify Design. The Design Verification dialog appears.
5. Click Scan to add any Library Properties/Attributes that have been added since the file was last worked on. Set up the rest of the dialog as shown below.





6. Click Verify to update the design and view the report. This report will contain components that have differing attributes in the design and the library. It will also list the components that have been placed in the design that are not found in the open libraries. You will see that POLCAP is missing.





7. To update directly from the Library we can use the Utils Force Update command. Set All components and choose to Merge Attributes (Favor Library). Click Update. (Notice another message letting us know that the POLCAP is missing).





8. Click on a component to show how the design has been updated.

Return to the exercise index. Proceed to the next exercise.