Multiple-part packages are physical objects that are comprised of one or more parts. In PADS Logic, a part is a logical entity that is described graphically by a symbol, pins and various properties. As parts are placed in a schematic design, Capture maintains the identity of the part for back annotation, net listing, bills of materials, and so forth. At the very minimum, a part requires a part name, a part reference prefix, and a name of a PCB footprint.
These two definitions that use the same term depending on the context of design may initially cause some confusion in the new environment which uses the term component. But it is not unlike how things work in Altium Designer except that the schematic symbol is effectively the part for all phases of design, and not just the PCB Layout portion of it. In Altium Designer, the logical symbol is assumed to be the essential starting point of a component.
It can be initially defined at minimum as a name in a schematic library to which pins and any graphical symbols or alternative display options needed for implementation may be added. This flexibility allows a component to be represented in different ways during the design and capture process.
True to the unified nature of Altium Designer, which incorporates all phases of electronic design, design rules are accessed from a single dialog - the PCB Rules and Constraint Editor. There are 10 rule categories that cover all respective aspects of design verification. Differential pairs routing can be checked from within the PCB Editor.
Widths, topologies, priority, layers, corners, via styles and fanout control. Matched Net Lengths, Length and parallel segments. All rules easily checked between layout and the schematic without importing. It may arise that a design object is covered by more than one rule with the same scope. In this instance, a contention exists. All contentions are resolved by the priority setting. The system simply goes through the rules from highest to lowest priority and picks the first one who's scope expression s matches the object s being checked.
A scope is effectively a query that you build to define all the member objects that are governed by that rule, giving you full control. These rules rely on a pre-defined list format where higher numbers on the list have precedence over those that are lower:. Conditional layer rules can be applied for an additional level of precedence. For example, a Default with a conditional layer rule would be higher in the precedence hierarchy than a simple Default rule.
In Altium Designer, scoping allows you to decide exactly what a rule's precedence will be and how it will be applied to target objects through a query. You can even define multiple rules of the same type, but each targeting different objects.
Queries are easily accessed for any rule. Advanced Query options are also available to help you write your own, more complex queries. Double-clicking on any rule while in the PCB Rules and Constraint Editor dialog will bring up the specific query for that rule in the right pane.
If you do not want to use a design rule, but may want to use it in the future, rather than delete it, you can disable it. Toggle the corresponding Enable option for the rule in the relevant list. In addition to scoping, there is also a user-defined priority setting described below. The combination of rule scoping and priority is very powerful and gives an unprecedented level of control that allows you to precisely target the design rules for your board.
An integrated library in Altium Designer is one where the source symbol, footprint, and all other information e.
SPICE and other model files are compiled into a single file. During compilation checks are made to see how relationships are defined, to validate the relationship between the models and the symbols and to bundle them into a single integrated library. This file can not be directly edited after compilation, offering portability and security.
Graphical representation of the shape defined for the component to mount onto the PCB. This is 2-dimensional representation only, and can be quite different from the actual component itself. The term Part is used only as part of the design capture schematic process in Altium Designer. Once placed as a footprint into a PCB file, it is given a designator and value comment and becomes a component. Below are references to other articles and tutorials in the Altium Designer Documentation Library that talk more about the conceptual information as well as walking you through specific tasks.
Remember, you can also browse through the Help contents, and use F1 and What's This at any time in a dialog for more details. The rationale here is that should you wish to import ten PCB designs and you want to map the layer Assembly 1 to Mechanical Layer 1, you would not have to customize each of the ten PCB designs in order to get the right layer mapping.
The advantage to importing in this manner is that batch management of layer mapping can save a lot of time when importing multiple designs.
In this instance, the default layer mapping will be saved to your Preferences. The disadvantage to using this is that Default Layer Mapping is not always intelligent with differing structures in designs, and so some manual changes may be needed afterwards. You'll need to decide what is best for your situation. PCB file. REU which allow you to preserve a portion or subset of a PCB design for reuse within the design or in another design - these are ignored and not translated.
In Altium Designer, the logical design area begins with a document, and for each document there is a file stored on the hard drive. This means that for each Altium Designer schematic sheet page there is a file, an important conceptual difference to remember. There can also be multiple design documents of varying types, depending on the nature of the design you are working on. Getting started, most DXDesigner users will be interested in the schematic and PCB document types as these are the files that their designs will be translated to.
Basic file operations: new PCB and schematic document types can be easily created via File»New, or by right-clicking on the project in the Projects panel. Parts are defined as having a part type, a logic family, number of pins, number of gates, and signal pins.
The term component is only used when the part becomes placed as a physical object in the PCB layout design. Parts in PCB designs usually correspond to physical objects: gates, chips, connectors, objects that come in packages of one of more parts.
Multiple-part packages are physical objects that are comprised of one or more parts. In DxDesigner, a symbol block type is the logical entity that is described graphically by attributes, pins and various properties. As block types are placed in a schematic design, DxDesigner maintains the identity of the part for back annotation, net listing, bills of materials, and so forth.
At the very minimum, a part requires a part name, a part reference prefix, and a name of a PCB footprint. These two definitions that use the same term depending on the context of design may initially cause some confusion in the new environment which uses the term component. But it is not unlike how things work in Altium Designer except that the schematic symbol is effectively the part for all phases of design, and not just the PCB Layout portion of it.
In Altium Designer, the logical symbol is assumed to be the essential starting point of a component. It can be initially defined at minimum as a name in a schematic library to which pins and any graphical symbols or alternative display options needed for implementation may be added. This flexibility allows a component to be represented in different ways during the design and capture process. Main article: Design Rules. A scope is effectively a query that you build to define all the member objects that are governed by that rule, giving you full control.
These rules rely on a pre-defined list format where higher numbers on the list have precedence over those that are lower:.
Conditional layer rules can be applied for an additional level of precedence. For example, a Default with a conditional layer rule would be higher in the precedence hierarchy than a simple Default rule. In Altium Designer, scoping allows you to decide exactly what a rule's precedence will be and how it will be applied to target objects through a query.
You can even define multiple rules of the same type, but each targeting different objects. Queries are easily accessed for any rule Figure Advanced Query options are also available to help you write your own, more complex queries.
Double-clicking on any rule while in the PCB Rules and Constraint Editor dialog will bring up the specific query for that rule in the right panel. If you do not want to use a design rule, but may want to use it in the future, rather than delete it you can simple disable it. Toggle the corresponding Enable option for the rule in the relevant list.
The most used PCB design file format is Gerber files, which has been the case for many years. Based upon this, most contract manufacturers CMs accept or even prefer to receive your design in Gerber format. However, the trend in the PCB manufacturing industry is moving towards requiring CAD file formats from PCB designers that can be more easily incorporated into the board fabrication process. In line with the comprehensive structure of Altium Designer, you have the capability to export your design in Gerber or a wide range of other EDA file formats.
Learn how to create and export Gerber files. Learn what other file formats Altium supports. Learn about the import wizard.
The ability to integrate designs created in other EDA tools into your Altium projects effectively broadens your workspace to include tools. This philosophy of extending Altium Designer to meet your work environment needs is a core philosophy designed into the PCB software design package.
To support the philosophy of enabling you to personalize your work environment, Altium Designer includes an Extensions Management capability to simplify the process of working with other EDA file formats. Learn about Altium Designer Extensions Management. Learn to integrate. STEP files into your design. Altium Designer is the most comprehensive PCB design software package available in the industry with a unified design platform that allows for simultaneous access to the schematic, BOM, and PCB layout along with extensive capabilities.
In addition to developing the best package, Altium also includes the ability for you to extend functionality and personalize your work environment to include support for other EDA tool file formats. Zachariah Peterson has an extensive technical background in academia and industry. He currently provides research, design, and marketing services to companies in the electronics industry.
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