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There are two kinds of item properties: properties that depend on the prediction standard you are working with (e.g., quality level, voltage stress, etc.) and common properties that are available for all items regardless of which prediction standard is being used. This topic describes these common properties, which include the Identifiers and General sections.
The common properties can be displayed in the System Hierarchy panel and/or the Properties panel:
To choose which properties will be displayed in the system hierarchy, select the options in the System Hierarchy page of the Application Setup, or right-click anywhere in the system hierarchy and click Customize Columns.
To choose which properties will be hidden or displayed in the Properties panel, select the options in the Properties page of the Application Setup, or right-click the property name and choose the option on the shortcut menu. The only exceptions are Name, Quantity, Mission Time, Redundancy and Quantity Required. Those five properties must always be displayed.
Your preferences are stored per computer/username, so any project that you open on this computer will have the same properties displayed.
The following properties apply to all items:
Identifiers
Name is the name or other identifying label.
The remaining fields in this section correspond to the Synthesis identifiers and will appear on models published from the prediction.
General
Quantity specifies whether the item represents multiple identical items that are all subjected to identical stress conditions (e.g., they have the same operating environment, applied voltages, etc.). This speeds up data entry by allowing you to add/edit only a single instance of the item. By default, the identical items are assumed to be reliability-wise connected in series. However, if the Redundancy property is set to True, the quantity indicates the number of items in a reliability-wise parallel configuration.
ID is an identifier for the item. This is user-defined and does not have to be unique.
Alternate Part Number is the alternate part number or other identifying label.
LCN is the location control number or other identifying label.
Reference Designator is a string indicating the item's position in its parent structure.
Function Description is a description of the item's function in the system or assembly.
Analyst is the person who performed the analysis for the item.
Compiled By is the person who selected to include the item in the current prediction.
Approved By is the person who approved the analysis for the item and/or its usage in the current prediction.
The following properties apply only to generic blocks:
Update Children and Update Temperature Mode specify whether and how certain stress values (e.g., temperature, voltage, etc.) should be synchronized for all components in the same assembly. (See Update Modes.)
Redundancy, Quantity Required and Mission Time are properties for considering redundancy (i.e., components organized in a reliability-wise parallel configuration) for some calculations. (See Redundancy.)
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