National Instrument Circuit Design Suite

PROFESSIONAL EDITION RELEASE NOTES
NI Circuit Design Suite Version 11.0.1 These release notes contain system requirements for NI Circuit Design Suite 11.0.1, and information about product tiers, new features, documentation resources, and other changes since NI Multisim 11.0 and NI Ultiboard 11.0. NI Circuit Design Suite includes the familiar NI Multisim and NI Ultiboard software products from the National Instruments Electronics Workbench Group.
Contents Installing NI Circuit Design Suite 11.0.1........................ 2 Minimum System Requirements ........................... 2 Installation Instructions.................................. 3 Product Activation ...................................... 3 What’s New in NI Circuit Design Suite 11.0.1.................... 3 Connector Improvements................................. 4 Continued Improvements to Forward and Backward Annotation .. 4 Simulating Indicator Added to Design Toolbox............... 5 Ability to Place a Component Directly from the Component Wizard .................................... 5 Improved Multisim File Load/Save Performance .............. 5 Updated Component Database............................. 5 Model Encryption ...................................... 5 PCB Matrix Nominal Land Patterns Added to Ultiboard........ 5 All Layers Show in General Layers Tab in Ultiboard ........... 5 Reorganization of the Ultiboard Help....................... 6 Bug Fixes ............................................. 6 What’s New in NI Circuit Design Suite 11.0..................... 6 Better Ways of Working with Analog Simulation.............. 6 SPICE Modeling Improvements........................ 7 Direct Viewing of the SPICE Netlist.................... 8 Additions and Improvements to Analysis ................ 8 Improvements to Digital Simulation........................ 8 Improvements to the Grapher ............................. 8
Updated Component Database .............................9 New Components from Leading Manufacturers............9 New Components to Integrate with NI Hardware and RIO Design.......................................9 New Virtual Components.............................9 New Schematic Net System ...............................10 Enhanced Projects and New Packing Function ................10 All-New Forward and Backward Annotation..................10 Additional Functionality in the LabVIEW-Multisim Instrument Interface....................................11 Integration with NI Example Finder.........................11 General Improvements to NI Multisim Usability...............11 Improved Multisim Simulation Description in Help File.........11 General Improvements to NI Ultiboard......................11 File Compatibility with NI Circuit Design Suite 10.x .......12 Bug Fixes..........................................12 Product Tier Details.........................................12 Localization ...............................................18 Documentation.............................................19
Installing NI Circuit Design Suite 11.0.1 This section describes the system requirements and installation procedures for NI Circuit Design Suite.
Minimum System Requirements To run NI Circuit Design Suite 11.0.1, National Instruments recommends that your system meet or exceed the following requirements: •
Windows Vista/XP 32-bit editions.
•
Windows Vista 64-bit edition.
•
Windows 7 32-bit and 64-bit editions.
Circuit Design Suite 11.0 does not support Windows NT/Me/98/95/2000, or Windows XP x64.
Note
•
Pentium 4 class microprocessor or equivalent (Pentium III class minimum).
•
512 MB of memory (256 MB minimum).
•
1.5 GB of free hard disk space (1 GB minimum).
•
Open GL® capable 3D graphics card recommended (SVGA resolution video adapter with 800 × 600 video resolution minimum, 1024 × 768 or higher preferred).
•
To develop custom LabVIEW based instruments for use in Multisim, LabVIEW 8.6.x or 2009 is required.
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Installation Instructions The NI Circuit Design Suite 11.0.1 installer installs both products in the suite: NI Multisim and NI Ultiboard. If you have not installed version 11.0, the installer installs that version first, followed by version 11.0.1. If you have already installed version 11.0, the installer installs version 11.0.1, which automatically updates version 11.0 in the same directory in which it was originally installed. National Instruments recommends that you close all open applications before you install NI Circuit Design Suite. By default, the NI Circuit Design Suite installation program copies files to National InstrumentsCircuit Design Suite 11.0 after you complete the following steps:
1.
Insert the NI Circuit Design Suite CD into the CD-ROM drive. If the CD startup screen does not appear, select Run from the Windows Start menu and run setup.exe from your CD drive.
2.
Follow the instructions in the dialog boxes.
Product Activation When you run a product in NI Circuit Design Suite for the first time, it will prompt you to activate the product. If you do not have a valid license, the product will run in Evaluation Mode and continue to prompt you to activate on each subsequent run. Evaluation Mode is valid for 30 days following the first run of the product. For information about how to activate your software product, please refer to the Activation Instructions for National Instruments Software Note to Users included with your NI Circuit Design Suite package.
What’s New in NI Circuit Design Suite 11.0.1 This document describes the following feature additions or improvements to NI Circuit Design Suite 11.0.1: •
Connector improvements.
•
Continued improvements to Forward and Backward Annotation.
•
A simulating icon has been added to the Design Toolbox.
•
Ability to place a component directly from the Component Wizard.
•
Improved Multisim file load/save performance.
•
Updated component database.
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•
Model encryption.
•
PCB Matrix nominal land patterns added to Ultiboard.
•
All layers show in the General layers tab in Ultiboard.
•
Reorganization of the Ultiboard Help.
•
Bug fixes.
Connector Improvements The following improvements have been made to connectors in Multisim: •
The properties dialog boxes for all connectors now have a Display tab, where you can set whether or not to display the connector’s name, or use the schematic global setting. The global settings for all connector types are found in the Circuit tab of Sheet Properties dialog box, in the Connectors box. The connector viewing options have also been added to the Visibility tab of the Design Toolbox.
•
The On-page Connection dialog box has been renamed to On-Page Connector.
•
The Global Connection dialog box has been renamed to Global Connector.
•
When adding a global or on-page connector to a design, you must now enter a new name, or choose an existing name for a list of available target connectors.
For complete information on properties dialogs for the various connector types, refer to the Multisim Help.
Continued Improvements to Forward and Backward Annotation This release continues on the improvements made to forward and backward annotation in Circuit Design Suite 11.0. Improvements include: •
An optional time stamp added to annotation files (@yyyy-mm-dd-time appended to file name before extension, as in Getting Started [email protected])
•
The Forward Annotation and Backward Annotation dialogs have two new buttons that become active if one or more conflicts are present in the dialog. These are Go to next conflict and Go to previous conflict.
•
An Additional Information box has been added to the Forward Annotation and Backward Annotation dialogs. Select a difference to see a more detailed description in this box. This box also provides information on how to resolve a selected conflict.
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Simulating Indicator Added to Design Toolbox Previously, when multiple designs were open in Multisim, it was sometimes difficult to identify which design was simulating. This was inconvenient, as simulation of one design must be stopped before starting simulation of another. To overcome this, a simulating indicator now appears in the Hierarchy tab of the Design Toolbox, beside the design that is being simulated.
Ability to Place a Component Directly from the Component Wizard Previously, when you created a component with Multisim’s component wizard, it was necessary to navigate to the new component using the Select a Component dialog box to place the new component on the workspace. The Place this component checkbox has been added to the final window of the component wizard so that a newly created component can be added directly to the workspace.
Improved Multisim File Load/Save Performance The speed at which Multisim loads and saves files has been improved for this release.
Updated Component Database NI Circuit Design Suite 11.0.1 includes new additions and improvements to the database. These include 33 new models and 38 new components from Analog Devices.
Model Encryption This edition of Multisim may include models that have been encrypted at the request of their manufacturers. When seen in the netlist viewer, Encrypted Model will show where the model syntax would normally appear.
PCB Matrix Nominal Land Patterns Added to Ultiboard Approximately 1,500 land patterns from the PCB Matrix SMN7351B library have been added to the Ultiboard database.
All Layers Show in General Layers Tab in Ultiboard The General layers tab in the PCB Properties dialog box has been modified to display all layers available in Ultiboard. Also, a new Information layer called the Courtyard has been added. The Courtyard is the boundary, or space, around an IPC-compliant part. The Courtyard includes the minimum electrical and mechanical clearance of the component and land pattern boundaries.
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Reorganization of the Ultiboard Help The Ultiboard Help has been reorganized to be more efficient and user-friendly. The NI Ultiboard User Manual, which had essentially the same content as the Ultiboard Help, has been replaced by NI Ultiboard Fundamentals. NI Ultiboard Fundamentals contains a high-level overview of the Ultiboard functionality.
Bug Fixes Refer to the Readme file for a list of issues fixed in version 11.0.1. The Readme file is located at National InstrumentsCircuit Design Suite 11.0 documentationReadme_eng.html.
What’s New in NI Circuit Design Suite 11.0 This document describes the following feature additions or improvements to NI Circuit Design Suite 11.0: •
Better ways of working with analog simulation.
•
Improvements to digital simulation.
•
Additions and improvements to analysis.
•
Improvements to data visualization and manipulation in the Grapher.
•
Updated component database.
•
New schematic net system.
•
Enhanced Projects and New Packing Function.
•
All new Forward and Backward Annotation.
•
Additional functionality in the LabVIEW-Multisim Instrument Interface.
•
Integration with NI Example Finder.
•
General improvements to Multisim usability.
•
Improved Multisim simulation description in help file.
•
General improvements to Ultiboard.
•
File compatibility with Circuit Design Suite 10.x.
Better Ways of Working with Analog Simulation Analog Simulation improvements include extended SPICE modeling capabilities, direct viewing of the SPICE Netlist, and more analysis capabilities.
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SPICE Modeling Improvements NI Multisim 11.0 includes the following improvements to SPICE simulation: •
Improvements to S-Domain modeling with new controlled sources: a Laplace Function Block and a Frequency Table Function Block.
•
Updated and new core models including: –
Updated to version 4.6.3 of BSIM.
–
Support for the VBIC BJT device model.
–
Support for the BSIMSOI v4.0 model.
–
Support for the EKV v2.6 MOSFET model.
•
Support for integrals, SDT(), and derivatives, DDT(), inside Arbitrary Sources. These functions evaluate the time integral and time derivative of their arguments, respectively.
•
The operators ** and ^ are evaluated with the absolute value of the base in real valued floating point expressions.
•
An inductor can be coupled with an indefinite number of inductors. There is also a new virtual coupling inductor.
•
An improved Current-Controlled Switch.
•
Improved support for Diode parameters that model advanced effects including: Parameter
© National Instruments Corporation
Description
IKF
High-injection knee current.
ISR
Recombination current parameter.
IBVL
Low-level reverse breakdown knee current.
NBV
Reverse breakdown ideality factor.
NBVL
Low-level reverse breakdown ideality factor.
NR
Emission coefficient for ISR.
TBV1
Linear BV temperature coefficient.
TBV2
Quadratic BV temperature coefficient.
TIKF
Linear IKF temperature coefficient.
TRS1
Linear RS temperature coefficient.
TRS2
Quadratic RS temperature coefficient.
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NI Circuit Design Suite Release Notes
Direct Viewing of the SPICE Netlist NI Multisim is a graphical SPICE simulation environment, that allows you to simulate circuits without the need to look at the SPICE netlist. If you are an advanced user, you may find it is useful to view the SPICE netlist. Version 11.0 introduces a SPICE Netlist Viewer.
Additions and Improvements to Analysis NI Multisim 11.0 introduces a new analysis, easier access to device current while setting up analyses, and support for interactive components and the time delay switch in analyses.
AC Single Frequency Analysis AC Single Frequency Analysis creates a text output of the voltage, current, or power phasor at a given frequency. The phasor is displayed as a magnitude and phase or a real and imaginary pair.
Device Current and Power in Analyses In NI Multisim 11.0, you can choose the current or power of devices as analysis outputs from the main analysis output dialog. Previous versions of the software required advanced setup for these values.
Configurable Devices in Analyses Devices such as switches, potentiometers, variable capacitors, and inductors now send their set values to the analysis engine. Further, the configurations of the time delay switch now affect the analyses.
Improvements to Digital Simulation Digital simulations will run with increased speed, accuracy, and convergence due to improvements to the pin models. In real mode the power supplies will control the output voltage levels. There is also increased accuracy in mixed-mode simulations through increased time-step accuracy of the simulation engine and inertial delays.
Improvements to the Grapher A number of improvements were made to the Multisim Grapher including additional capabilities, a new option for displaying parameter sweep data, and new export file types. New Grapher capabilities introduced in NI Multisim 11.0 include: •
NI Circuit Design Suite Release Notes
Annotations—You can add annotations to the graph. Both data labels which display selected coordinates of a graph and general text labels are supported forms of annotation.
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•
Simulation points—You can optionally display the actual simulation points.
•
A Smart Legend—This legend is dockable and allows you to toggle the display of traces.
NI Multisim 11.0 allows you to display parameter sweep results in a graph or table format. You can now save Grapher data in two additional file formats: Comma Separated Variables, CSV, files and ASCII Delimited File, DLM files. CSV files are easy to open in spreadsheet applications and DLM files are easy to open with math scripting applications such as NI LabVIEW MathScript.
Updated Component Database NI Circuit Design Suite 11.0 includes new additions and improvements to the database. These include approximately 550 new components from leading manufacturers, new NI Hardware connectors, new virtual components, and more than 650 updated components.
New Components from Leading Manufacturers There are approximately 550 new components with models from Texas Instruments, Linear Technologies, and Microchip. The additions include symbols, models, and IPC standard land patterns.
New Components to Integrate with NI Hardware and RIO Design There are new connectors added to enable faster board design that will integrate with Single Board RIO as well as M-Series Devices. There are a total of 26 new NI connectors with both symbols and IPC standard land patterns.
New Virtual Components The addition of new virtual components makes simulations easier for both digital and analog applications. They include three digital sources, a transport delay component, a virtual coupling inductor, and two control function blocks for s-domain modeling. The additions include symbols and models.
© National Instruments Corporation
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NI Circuit Design Suite Release Notes
New Schematic Net System NI Circuit Design Suite 11.0 introduces a new What You See Is What You Get (WYSIWYG) net system. The net names are consistent in capture, simulation, and layout, making schematics and artwork easier to read and identify. Net names pass through all levels of hierarchy and through multipage designs. You can define global nets by placing global connectors; this will allow the creation of arbitrary and unlimited power net names. On-page connectors replace the hidden virtual connections.
Enhanced Projects and New Packing Function NI Multisim 11.0 features the implementation of Project Packing. Project Packing allows users to easily share projects between computers and networks. The files linked to the project are packaged into a single file for distribution.
All-New Forward and Backward Annotation NI Multisim 11.0 introduces a fully interactive forward and backward annotation system. You now have visibility into and control over what changes take place between the schematics and the layout of a design. Both forward and backward annotation are invoked from within Multisim or Ultiboard and provide the same user experience. An annotation file is produced during annotation; you can save and share these files. The following data are annotated from NI Multisim to NI Ultiboard: •
Multisim Components (ID, RefDes, connected net names, land patterns, IDs of multi-section peers, variant memberships, subcircuit/hierarchical block memberships, and part group memberships).
•
Nets (ID, net name, components-pin pairs on the net, all net properties, net group memberships).
•
Variants (Name, enabled/disabled for export).
•
Layers.
The following data are annotated from NI Ultiboard to NI Multisim: •
Ultiboard Parts (ID, RefDes, land-pattern, connected net names).
•
Nets (ID, net name, land-pattern-pin pairs on the net, all net properties).
•
Layers.
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Additional Functionality in the LabVIEW-Multisim Instrument Interface LabVIEW instruments in Multisim allow you to create custom input, output, and input/output instruments for use in Multisim. Improvements in Multisim 11.0 include support for: •
AC Analysis.
•
DC Sweep Analysis.
•
Passing a number of new parameters: –
Current.
–
Differential Voltage.
–
Inductance.
–
Resistance.
–
Capacitance.
–
Diode voltage and voltage and current pairs.
–
BJT voltage and current pairs.
Integration with NI Example Finder The NI Example Finder allows users to find examples by either browsing folders or searching with keywords. Descriptions of the files are presented prior to opening the design.
General Improvements to NI Multisim Usability Throughout NI Multisim a number of improvements were done to enhance the usability of the product. Some examples include: •
Ability to reorder Multipage Designs.
•
Enabling the Title Block to return to the grid.
Improved Multisim Simulation Description in Help File The simulation section of the Multisim Help has been updated to include a detailed discussion of Multisim’s simulation processes and methods.
General Improvements to NI Ultiboard Throughout NI Ultiboard a number of improvements were done to enhance the usability of the product. Examples include: •
•
© National Instruments Corporation
Increasing the pin count limit of the versions as follows: –
1500 pin limit in NI Ultiboard Education.
–
550 pin limit in NI Ultiboard Student.
Streamlining the process of exporting Gerber files. There is no more need to define apertures for each exported layer.
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NI Circuit Design Suite Release Notes
File Compatibility with NI Circuit Design Suite 10.x Files from NI Circuit Design Suite 10.x, and earlier, are forward compatible with 11.0. New features of 11.0 prevent version 11.0 files from opening in previous releases.
Bug Fixes Refer to the Readme file at National InstrumentsCircuit Design Suite 11.0documentation for a
list of bugs in version 11.0: •
Readme_eng.html—English Readme file.
•
Readme_deu.html—German Readme file.
•
Readme_jpn.html—Japanese Readme file.
Product Tier Details The following lists the schematic capture functionality available in Multisim Base, Full, and Power Pro editions: Functionality
Base
Full
Power Pro
Customizable GUI
X
X
X
Modeless part placement and wiring
X
X
X
Fast retrieval parts bins
X
X
X
User defined fields
X
X
X
Advanced symbol editor
X
X
X
Auto and manual wiring
X
X
X
Virtual wiring by node name
X
X
X
Fast auto-connect passives
X
X
X
Rubber banding on part move
X
X
X
Replace multiple components at once
X
X
X
Bus-Vector connect
X
X
X
Project manager
X
X
X
Project packing
X
X
X
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Functionality
Base
Full
Power Pro
Hierarchical design
X
X
X
Multisheet design
X
X
X
Circuit annotations
X
X
X
Comments on schematic
X
X
X
Electrical rules check
X
X
X
Title block editor
X
X
X
Forward/Back annotation
X
X
X
Export to Mentor PADS layout
X
X
X
Advanced search
X
X
X
Variant support
X
Spreadsheet view
X
Design constraints
X
Zoom to selected part
X
Pin and gate swap
X
Customizable BOM
X
Advanced reports
X
Cross-probing with Ultiboard
X
ERC scope setting
X
Mark no-connect pins
X
Database import/export
X
Component database
Partial
Partial
Complete
The following lists the simulation functionality available in Multisim Base, Full, and Power Pro editions: Functionality
© National Instruments Corporation
Base
Full
Power Pro
Interactive simulator
X
X
X
Fully mixed-mode A/D simulation
X
X
X
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NI Circuit Design Suite Release Notes
Functionality
Base
Full
Power Pro
Standard SPICE 3F5/XSPICE
X
X
X
Enhanced model support
X
X
X
Cadence® PSpice® model simulation*
X
X
X
Speed/Accuracy tradeoffs
X
X
X
Simulation Advisor
X
X
X
Convergence Assistant
X
X
X
Virtual, interactive, animated parts
X
X
X
Mouse click support for interactive parts
X
X
X
Measurement Probes
X
X
X
Component Wizard
X
X
X
NI measurement data file sources
X
X
X
NI measurement data file export
X
X
X
NI LabVIEW VIs as instruments and sources
X
X
Simulation Profiles
X
X
Postprocessor
X
X
Expressions in analyses
X
X
Add traces to Grapher post analyses
X
X
Rated components
X
X
Insert faults into components
X
X
Op-Amp Wizard
X
555 Timer Wizard
X
Filter Wizard
X
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Functionality
Base
Full
Power Pro
CE Amplifier Wizard
X
Model makers
X
Switch mode power supply generics
X
RF Design Module
X
Nested sweeps
X
C-Code modeling
X
Virtual Instruments
4
15
22
Analyses
0
16
20
Simulated Agilent instruments
0
1
3
Simulated Tektronix instrument
0
0
1
X
X
Multisim MCU Multisim Automation API
X
* Does not support all Cadence® PSpice® syntax
The following lists the layout functionality available in Ultiboard Full and Power Pro editions: Functionality
© National Instruments Corporation
Full
Power Pro
Gridless Follow-me placement
X
X
Push and Shove part placement
X
X
Push and Shove trace placement
X
X
Real-time & from copper ratsnest
X
X
Auto-alignment
X
X
Real-time polygon update with voiding
X
X
Keep-in/Keep-out areas
X
X
Forward/Backward annotation
X
X
Real-time DRC
X
X
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Functionality
Full
Power Pro
Jump to Error
X
X
64 layers and 1 nanometer resolution
X
X
Polar Grids
X
X
Customizable layer viewing
X
X
Split power-planes
X
X
Comprehensive Footprint Wizard
X
X
Enhanced 3D visualization with print
X
X
Full screen mode
X
X
Gerber, DXF, IPC-D-356A, SVG output
X
X
Dimensions on PCB and Landpatterns
X
X
Dimensions in Database Manager
X
X
User annotations
X
X
Net bridges
X
X
3D visualization inside circuit board
X
Turn off ratsnest for selected nets
X
Load and save technology files
X
Cross-probing with Multisim
X
Variant Support
X
Component Placement Sequencer
X
Place components in array
X
Unplace all components
X
Ruler bar alignments and measurements
X
Save PCB Design as a component
X
Permanent grouping
X
Pin & gate swapping
X
Gridless Connection Machine
X
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Functionality
Full
Power Pro
High-speed constraint driven layout
X
Multiple clearances
X
Net topology choices
X
Equispace trace support
X
Differential Impedance Calculator
X
Transmission Line Calculator
X
Microvias
X
Test point insertion
X
Automatic tear-dropping
X
Pin necked trace support
X
Automatic jumper insertion
X
Copy Route & Replica Place functions
X
In-place footprint editor
X
Mechanical CAD
X
Export 3D info in 3D IGES, DXF formats
X
Copper amount report
X
Test point report
X
Number of pins supported Spreadsheet view
2,000
Unlimited
Limited
Complete
The following lists the autorouting functionality available in Ultiboard Full and Power Pro editions: Functionality
© National Instruments Corporation
Full
Power Pro
Autoplacement
X
X
Pin & gate swapping
X
X
Fully customizable cost factors
X
X
Progressive Routing
X
X
Interactive autorouting
X
X
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Functionality
Full
Power Pro
Constraint driven routing
X
X
Follows keep-in/keep-out criteria
X
X
Manual pre-placement: components, vias, traces
X
X
Auto Block Capacitor recognition
X
X
SMD mirroring
X
X
Net shielding
X
X
Automatic testpoint insertion
X
X
Trace rubberbanding
X
X
Topology: shortest, daisy chain, star
X
Prioritize routing order
X
Route an individual net
X
Automatic bus routing
X
Differential Pair routing
X
Group autoplace
X
Group autoroute
X
Optimization
X
Pin number limit Maximum number of layers
2,000
Unlimited
4
64
Localization NI Circuit Design Suite 11.0.1 is localized for English, German, and Japanese. The system locale setting determines the default language used by the software. To change the language the software uses, select Options»Global Preferences, click on the General tab, select the desired locale from the Language drop-down list, and restart the application. The following items are not localized, and remain in English: •
LabVIEW instruments.
•
Layer names in both NI Ultiboard and the NI Multisim Spreadsheet View.
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•
Agilent and Tektronix simulated instruments.
•
Sample files.
•
MCU functionality: source file names, code/comments within source files, and compiler/linker messages.
The following documentation is available in English, German, and Japanese: •
NI Circuit Design Suite Release Notes
•
Getting Started with NI Circuit Design Suite
User manuals and help files are not localized, and remain in English.
Documentation NI Circuit Design Suite 11.0.1 includes a complete documentation set featuring printed and electronic resources for your reference. The following printed and electronic resource is available: •
NI Circuit Design Suite Release Notes
The following electronic resources are available in PDF files: •
Getting Started with NI Circuit Design Suite
•
NI Multisim Fundamentals
•
NI Ultiboard Fundamentals
To access the User Manuals, select Start»All Programs»National Instruments»Circuit Design Suite 11.0»Documentation and then select the file of interest. The following online help files are available from the installed software Help menu and from the Start Menu: •
Multisim Help
•
Ultiboard Help
To access the help files, from the Start menu, select Start»All Programs» National Instruments»Circuit Design Suite 11.0»Documentation and then select the file of interest. The following online help files are available from the installed software Help menu: •
Component Reference Help
•
Multisim Symbol Editor Help (access from the Symbol Editor)
•
Multisim Title Block Editor Help (access from the Title Block Editor)
© National Instruments Corporation
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NI Circuit Design Suite Release Notes
LabVIEW, National Instruments, NI, ni.com, the National Instruments corporate logo, and the Eagle logo are trademarks of National Instruments Corporation. Refer to the Trademark Information at ni.com/trademarks for other National Instruments trademarks. Other product and company names mentioned herein are trademarks or trade names of their respective companies. For patents covering National Instruments products/technology, refer to the appropriate location: Help»Patents in your software, the patents.txt file on your media, or the National Instruments Patent Notice at ni.com/patents. © 2007–2010 National Instruments Corporation. All rights reserved.
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