Product Documentation
OrCAD Capture Reference Guide
Product Version 17.4-2020, June 2020

Save Files in Project dialog box

The Save Files in Project dialog box appears when you save a file in a project without first saving the project. Capture may also display this dialog box if you perform an action that requires the project be saved first, and it has not been saved.

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Yes

Save the design file (*.DSN) and the project file (*.OPJ).

Yes All

Save the design file (*.DSN) and the project file (*.OPJ). Also save any other open files that are part of the project.

No

Don't save the design file (*.DSN).

No All

Don't save any file in the project (*.OPJ).

Cancel

Cancel the action.

Save Part As dialog box

To open this dialog

In the Part editor, choose Save As from the File menu.

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Name

Specify the name of the part to be saved.

Library

Specify the path and filename of the library that the part is saved in.

Save Project As dialog box

Save Project As saves the project to a new location along with the associated files present inside or outside the project directory maintaining their internal and external links. Associated files include referred projects, designs, libraries, simulation profiles, output files and so on.

To open this dialog

Perform one of the following:

Save Part Instance dialog box

The Save Part Instance dialog box appears when you finish editing a part instance in the part editor window and close its part editor window.

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Update Current

Apply the changes only to the selected part instance.

ll

Apply the changes to all instances of the selected part. If you have an identical part from another library, the instances of the part from the second library won't be affected.

Discard

Return to the schematic page editor without applying any changes to the selected part instance.

Cancel

Return to the part editor and continue editing the part.

Schematic Page Properties dialog box

To open this dialog

In the schematic page editor, choose Schematic Page Properties (see Schematic Page Properties command) from the Options menu.

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Page Size

Specify the measuring scale used, the page width and height, and the spacing between pins on a schematic page. For more information, see Page Size tab.

Grid Reference

Choose between alphabetic and numeric, and between ascending and descending for both horizontal and vertical grid references. Also use it to set the grid count for both horizontal and vertical grid references, and set the width of grid references. For more information, see Grid Reference tab.

Miscellaneous

Displays the schematic folder's creation time, last modification time, and the number of the schematic page being viewed in the schematic page editor.

Page Size tab

The Schematic Page Properties dialog box appears when you choose the Schematic Page Properties command from the Options menu, when you are in the schematic page editor.

The Design Template dialog box appears when you choose the Design Template command from the Options menu.

Set these options for future schematic pages. Changing these options won't affect schematic pages you've already created.

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Units

Specify the unit of measurement future designs are measured in. Select either inches or millimeters. This only affects the schematic page editor. It doesn't affect the part editor, which is always measured in grid units.

New Page Size

Specify the size of new schematic pages in the current design. The first five choices are A to E if the unit measurement is inches, or A4 to A0 if the unit measurement is millimeters.

Width

Displays the width of new schematic pages in the indicated unit measurement. You may specify the width of the custom schematic page. All other schematic page widths are permanently set for the current design.

Height

Displays the height of new schematic pages in the indicated unit measurement. You may specify the height of the custom schematic page. All other schematic page heights are permanently set for the current design.

Pin-to-Pin Spacing

Displays the pin-to-pin spacing in the indicated unit measurement.

Grid Reference tab

The Schematic Page Properties dialog box appears when you choose Schematic Page Properties from the Options menu, when you are in the schematic page editor.

The Design Template dialog box appears when you choose the Design Template command from the Options menu.

Set these options for existing schematic pages. Changing these options won't affect future schematic pages.

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Horizontal and Vertical

Count

Specify the number of divisions in the horizontal or vertical grid references.

Alphabetic and Numeric

Specify whether the grid references are alphabetic or numeric.

Ascending and Descending

Specify whether the grid references ascend or descend.

Width

Specify the width of the grid reference division.

Border Visible

Displayed

Specify whether the border is visible on the screen.

Printed

Specify if the border is visible on paper.

Grid Reference Visible

Displayed

Specify whether the grid references are visible on the screen.

Printed

Specify whether the grid references are visible on paper.

Title Block Visible

Displayed

Specify whether the title block is visible on the screen.

Printed

Specify whether the title block is visible on paper.

ANSI grid references

Specify if schematic pages use the ANSI Standard grid references.

Select Directory dialog box

To open this dialog

Choose the ... (browse Directories) button in the Archive Project dialog box.

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Directories

Displays the current selected drive and directory.

Drives

Specify the drive to create the new project on.

Create Dir

Display the Create Directory dialog box to create a new directory on the current drive. The new directory is created below the current selected directory.

Network

Display a standard Windows Map Network Drive dialog box to select a different drive.

Select File Type dialog box

The Select File Type dialog box appears after you add a file to a project.

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File Types list

Select a file type for the file you are adding to the project. Choose the appropriate type from the provided list:

  • EDIF Netlist
  • List
  • OrCAD Project
  • Report
  • Schematic Design
  • Schematic Library
  • Simulate Stimulus
  • Standard Delay File
  • Unknown
  • VHDL Netlist
  • VHDL SimModel
  • VHDL Source
  • VHDL Synthesis Macro Library
  • VHDL Synthesis Target Library
  • VHDL Testbench
  • Waveform
  • XNF Netlist

Selection Filter dialog box

The Selection Filter dialog box allows you to control the selection of objects in a schematic page during a block-select operation. It provides check box options that allow you to include or exclude objects from a list. For example, if you select the Parts, Nets, and Power/GND check boxes, only these objects will be selected when you perform the block-select operation.

To open this dialog

In the schematic page editor

Right-click the schematic page and choose Selection Filter from the popup menu.

OR

Choose Selection Filter from the View menu.

OR

Use the keyboard shortcut, Ctrl + I.

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Check box under the Schematic Page Drag Selection Filter group

Specify the objects that should be selected when the mouse pointer is dragged diagonally across the schematic page.

Select All

Select all the check boxes in the Schematic Page Drag Selection Filter group.

Clear All

Clear all the selected check boxes in the Schematic Page Drag Selection Filter group.

Select New Project Path dialog box

The Select New Project Path dialog box allows you to specify a different location for the project in the new format.

New Project Path

Specify the location where you want the project in the new format to be created. The project in the old format will be retained in its original location.

Select Occurrence dialog box

This dialog box displays when you open a schematic page that has multiple occurrences.

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Occurrence list

Specify which occurrence of the schematic page you want to open. This option lists all occurrences available for the selected schematic page.

Set Label State dialog box

To open this dialog

In the schematic page editor, choose Label State, Set from the Edit menu.

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Enter Label

Specify a label for the current state of the schematic page.

Setup dialog box

The Setup dialog box is used to set up, edit and view information about the configuration file used for netlisting and back annotating property information between Capture and PCB Editor. For more information about the configuration file, see Updating the PCB Editor configuration file.

To open this dialog

Click the Setup button in the PCB tab of the Create Netlist or Back Annotate dialog boxes.

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Configuration File

Mapping file used to pass properties back and forth between Capture and PCB Editor.

Order of Preference:

Last Used > Design Directory > CDS_SITE path > Capture Install Directory

If you have run a previous netlisting or back annotation the configuration file you used is listed. If not, the first found *.CFG file in your design directory is used. If no *.CFG file is found in your design directory, then the CFG file on the path defined by the CDS_SITE environment variable will be used. Finally, if the CDS_SITE environment variable is not set, the default will be to use the sample ALLEGRO.CFG file that was installed with Capture.

Edit

Click this button to edit the configuration file listed in the Configuration File field. The file opens in your default text editor. You can edit the configuration in any text editor. Only changes that are saved to the file get used when you run the netlist. Just having the file open with changes won’t be enough.

Backup Versions

Species the number of backup versions of the PST*.DAT files you want to maintain in your design directory. The highest value is the latest (newest). For example, PSTXNET.DAT,2 is the third version of the PSTXNET.DAT netlist file saved, and PSTXNET.DAT is the most recent version saved.

Device/Net/Pin name char limit

Specifies the maximum permissible character limit or length of a component, net, or pin name. The default is 31. The maximum value permitted by Capture is 255.

Ignore Electrical constraints

Specifies that the following electrical constraints will be ignored during netlist:

  • PROPAGATION_DELAY
  • RATSNEST_SCHEDULE
  • RELATIVE_PROPAGATION_DELAY
  • DIFFERENTIAL_PAIR
  • NET_SPACING_TYPE
  • NET_PHYSICAL_TYPE
  • ELECTRICAL_CONSTRAINT_SET
  • RATSNEST_SCHEDULE
  • VOLTAGE
  • MIN_LINE_WIDTH
  • MIN_NECK_WIDTH
  • MATCHED_DELAY
These electrical warnings are ignored when the design is forward annotated to layout. However, if any of the above constraints is defined on the board, these constraints will again be ignored in the backannotation process.

Output Warnings

Specifies if netlist warnings (ALG*) are to be logged during netlisting.

Suppress Warnings

Specifies the netlist warnings (ALG*) to be ignored during netlist.

Simulation Settings dialog box

To open this dialog

Choose Edit Simulation Profile (see Edit Simulation Profile command) from the PSpice menu.

This dialog box is similar to the Simulation Settings dialog box in PSpice. Both dialog boxes set simulation profile properties.

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General

Specify file information and simulation notes. For more information, see General tab

Analysis

Specify analysis options. This includes time domain, DC sweep, AC sweep and noise, and bias point options. For more information, see Analysis tab

Include Files

Add include files for the current design only, or globally for all designs.

PSpice searches model libraries, stimulus files, and include files for any information it needs to complete the definition of a part or to run a simulation. Include files are user-defined files that contain:

  • PSpice commands

or

  • Supplemental text comments that you want to appear in the PSpice output file

Create include files using any text editor, such as Notepad. Include file names typically have an .INC extension.

For more information, see the Include Files tab help topic.

Libraries

  • Add new model libraries that were created outside of Capture or the model editor
  • Remove libraries from the configuration list. Removing a library using this dialog box means that you are removing it from the configured list. The library still exists on your computer and you can add it back in if needed.
  • Establish whether a model library is for the current design only, or global for all designs
  • Change the order in which PSpice searches the model libraries
  • Change or add directory search paths

PSpice searches model libraries, stimulus files, and include files for any information it needs to complete the definition of a part or to run a simulation.

For more information, see the Libraries tab help topic.

Stimulus

Add a stimulus file which contains time-based definitions for analog and digital input waveforms.

PSpice searches model libraries, stimulus files, and include files for any information it needs to complete the definition of a part or to run a simulation.

You can create a stimulus file by:

  • Manually using the Model Text View of the model editor (or a standard text editor) to create the definition. Stimulus files typically have an .STM extension.
  • Using the stimulus editor, which automatically generates a file with an .STL extension

For more information, see the Stimulus tab help topic.

Options

Specify values, limits, and conditions for analog and gate-level simulation, and the information to include in the output file. For more information, see the Options tab help topic.

Data Collection

Specify which data is collected, and what file format is used to write the information. For more information, see the Data Collection Settings tab help topic.

Probe Window

Determine if the Probe window appears when the profile is opened, and either during simulation or after simulation has completed. You can also choose to show all markers on open schematics or show the last plot. For more information, see the Probe Window tab help topic.

Analysis tab

The Analysis tab specifies analysis options for the simulation.

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Analysis Type

Specify the analysis type. The type determines the options that are available in the Options box. Analysis types include:

  • Time Domain (Transient)
  • DC Sweep
  • AC Sweep/Noise
  • Bias Point

Options

Depending on the analysis type selected, a sub-set of the following options are available.

General settings options

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Run to time

Specifies a finishing time, or stopping time, for the simulation. You can specify periods shorter than seconds, by including the time increment (such as "ns") immediately after the time period.

Start saving data after

Specifies the time to wait before saving data. This is useful for saving only specific portions of the analysis data and reducing the size of the data file. You can specify periods shorter than seconds, by including the time increment (such as "ns") immediately after the time period.

Transient options

Maximum step size

Specifies a smaller internal time step value than the default value.

Skip the initial transient bias point calculation

Specifies to skip the calculation of the bias point.

Output File Options

This button displays the Transient Output File Options dialog box

Primary and secondary sweep options

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Sweep variable

Voltage source

Specifies the source's voltage is used to set the sweep.

Current source

Specifies the source’s current is used to set the sweep.

Global parameter

Specifies that during the sweep, the global parameter’s value is set to the sweep value and all expressions are reevaluated.

Model parameter

Specifies that the parameter in the model is set to the sweep value.

Temperature

Specifies to set the temperature to the sweep value. For each value in the sweep, all the circuit components have their model parameters updated to that temperature.

Name

Specifies the name of the source.

Model type

Specifies the model type.

Model name

Specifies the model name.

Parameter name

Specifies the name of the global or model parameter.

Sweep Variable

Linear

Specifies that the sweep variable is swept linearly from the starting to the ending value.

Logarithmic

Specifies that the sweep variable is swept logarithmically by octaves or decades.

Value list

Specifies that the sweep uses a list of values.

Start value

Specifies the starting value for the sweep.

End value

Specifies the ending value for the sweep.

Increment

Specifies the step size for the sweep.

Monte Carlo/Worst Case options

The Monte Carlo/Worst Case options in the Simulation Settings dialog box's Analysis tab specifies analysis options for the simulation.

Monte Carlo/Worst Case analyses vary the lot or device tolerances of devices, among multiple runs of an analysis (DC sweep, AC sweep, or transient).

You can run either a Monte Carlo or a worst-case analysis, but not both at the same time. Before running either analysis, you must set up the device and lot tolerances of the model parameters to be investigated.

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Monte Carlo

Perform a Monte Carlo (statistical) analysis of the circuit.

Worst-case/Sensitivity

Perform a sensitivity and worst-case analysis of the circuit.

Monte Carlo options

Number of runs

Specifies the total number of runs to be performed.

Use distribution

Specifies whether to use the Uniform or Gaussian distribution curve. Uniform is the default distribution. You can also create your own distribution curves by clicking the Distributions button.

Random number seed

Specify the seed for the random number generator within the Monte Carlo analysis. This value must be an odd integer ranging between 1 and 32,767. If this is not specified, the default value of 17,533 is used.

Save data from

Produce output from subsequent runs, after the nominal (first) run.

  • <none> Only the nominal run produces output.
  • All Forces all output to be generated.
  • First Generates output only during the specified number of runs.
  • Every Generates output every specified number of runs.
  • Runs (list) Does analysis for the listed runs.

Distributions

Display the Distributions dialog box.

Worst-case/Sensitivity options

Vary devices that have

Specify which devices are included in the analysis by the model parameter indicating use of DEV or LOT tolerance.

Limit devices to type(s)

Specify the types of devices to include in the analysis. The list is a string containing the initial letters of PSpice primitives.

Save data from each sensitivity run

Save the worst case data for every run of the DC, AC, or Time Domain analysis.

More Settings

Display the Monte Carlo Worst-Case Output File Options dialog box.

Parametric Sweep options

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Sweep options

Voltage source

Specifies the source's voltage is used to set the sweep.

Current source

Specifies the source's current is used to set the sweep.

Global parameter

Specifies that during the sweep, the global parameter's value is set to the sweep value and all expressions are reevaluated.

Model parameter

Specifies that the parameter in the model is set to the sweep value.

Temperature

Specifies to set the temperature to the sweep value. For each value in the sweep, all the circuit components have their model parameters updated to that temperature.

Name

Specifies the name of the source.

Model type

Specifies the model type.

Model name

Specifies the model name.

Parameter name

Specifies the name of the global or model parameter.

Sweep Type

Linear

Specifies that the sweep variable is swept linearly from the starting to the ending value.

Logarithmic

Specifies that the sweep variable is swept logarithmically by octaves or decades.

Value list

Specifies that the sweep uses a list of values.

Start value

Specifies the starting value for the sweep.

End value

Specifies the ending value for the sweep.

Increment

Specifies the step size for the sweep.

Temperature Sweep options

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Run the simulation at temperature

Specifies a temperature at which the analysis is done. The value is specified in degrees Centigrade.

Repeat the simulation for each of the temperatures

Specifies that the analysis must be performed for each of the temperatures listed. The values are specified in degrees Centigrade, and must be separated by spaces.

Save Bias Point options

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Save bias information in filename

Specifies the path and filename to save the bias point node voltages and inductor currents in.

Options

Save bias information

Specifies to save the bias either at a specific time, or at each time interval. All times are specified in seconds. If a time interval is specified, then only the latest bias is saved.

When Primary Sweep value is

Specifies the first DC sweep value at which the bias point is to be saved. If there are two sweep variables, Primary Sweep value specifies the first value.

When Secondary Sweep value is

Specifies the second value, if there are two DC sweep variables. If there is only one variable, type the value in the Primary Sweep value text box.

When Parametric Sweep value is

Specifies the transient analysis time at which the bias point is to be saved.

When Monte Carlo run number is

Specifies the number of Monte Carlo or worst-case analysis run for which the bias point is to be saved.

When Temperature and Sweep temperature is

Specifies the temperature at which the bias point is to be saved.

Do not save subcircuit voltages and currents

When selected, specifies that node voltages and inductor currents for subcircuits are not saved.

Load Bias Point options

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Load bias information from filename

Specifies the name of the file to load bias points. It is used in setting initial bias conditions for subsequent simulations. However, loading a bias point file does not guarantee convergence.

Data Collection Settings tab

The Data Collection Settings tab specifies data collection options.

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Schematic/Circuit Data

All voltages, currents, and digital states

Collect data for voltages, currents, and digital states.

All but internal subcircuit data

Exclude subcircuit data.

At Markers only

Collect data for the marked node only.

None

Do not collect data.

Save data in the CSDF format (.CSD)

Specify that PSpice will write simulation results to the data file in ASCII format following the CSDF convention.

General tab

The General tab specifies file properties, and simulation profile notes.

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Simulation Profile

Specifies the name of the current simulation profile.

Input

Project Name (.OPJ)

Specifies the path and file name of the project file containing the schematic for simulation.

Schematic filename (.DSN)

If Schematic is selected, this specifies the path and file name of the design file containing the schematic for simulation.

Schematic name

Specifies the name of the root schematic for the simulation profile.

Output

Output filename

Specifies the file name for simulation output.

Probe data filename

Specifies the name for Probe data output.

Notes

Provides a text area for you to record notes on the active simulation profile.

Include Files tab

Include files contain PSpice circuit file commands. PSpice reads these before reading the netlist or simulation profile. Include files are useful for defining mathematical functions used in expressions.

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Filename

Display an include file name to be added to the current design only, or globally for all designs.

Include Files

Lists the include files to be loaded for the simulation.

Add as Global

Add the include file named in the Filename box to the Include Files list box, as global to all designs.

Add to Design

Add the include file named in the Filename box to the Include Files list box, for the current design only.

Edit File

Open a file you select from the Include Files list for editing.

Libraries tab

Use this tab to configure global and design only model libraries.

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Filename

Display a selected model library file name to be added to the current design only, or globally for all designs.

Include Files

Lists the model library files to be loaded for the simulation.

Add as Global

Add the include file named in the Filename box to the Include Files list box, as global to all designs.

Add to Design

Add the model library file named in the Filename box to the Library Files list box, for the current design only.

Edit File

Open a model library you select from the Library Files list for editing.

Options tab

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Analog Simulation

Use the Analog Simulation settings to fine-tune analog simulation accuracy, set iteration limits, set operating temperature, and specify MOSFET parameters.

General

Enter values for speed level, tolerances, and minimum conductance.

Autoconverge

Enter relaxed limits for various options that PSpice can modify during a simulation to achieve convergence.

MOSFET options

Enter values for the default drain area, default source area, default length, and default width.

Analog Advanced options

Enter values for the total transient iteration limit, relative magnitude for matrix pivot, and absolute magnitude for matrix pivot.

General

Enter values for solver, ITL5, and minimum conductance.

Bias Point

Enter values for various options to enable GMIN stepping, ITL6, PSEUDOTRAN

Transient

Enter values related to transient analysis, such as METHOD, CSHUNT, TRANCONV.

Gate-level Simulation

Use the Gate-Level Simulation settings to set timing, I/O levels for A/D interfaces, drive strength, and error message limits.

General

Enter various options for default delay selector, flip-flop and latches' initial state, default digital level, suppressing simulation error messages in the .dat file

Advance options

Enter values for the minimum output drive resistance, maximum output drive resistance, overdrive ratio, default delay calculation, and error message limits.

Output file

General

Use the Output File settings to select the types of information PSpice A/D saves to the simulation output file.

The option names shown correspond to the option names used in the PSpice OPTIONS command. For more information about this command, refer to the PSpice Reference document.

Probe Window tab

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Display Probe window when profile is opened

Display the Probe windows that were displayed the last time the profile was opened.

Display Probe window

during simulation.

Display the Probe windows when the simulation is running, and update the waveforms as the simulation progresses.

after simulation has completed.

Display the Probe windows when the simulation is finished.

Show

All markers on open schematics

Show the traces for all the markers that are placed on currently open designs in Capture.

Last plot

Show the traces that were used the last time the profile was opened.

Nothing

Show the traces that were used the last time the profile was opened.

Stimulus tab

Use this tab to configure global and design stimulus files.

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Filename

Display a selected stimulus file name to be added to the current design only, or globally for all designs.

Include Files

Lists the stimulus files to be loaded for the simulation.

Add as Global

Add the stimulus file named in the Filename box to the Stimulus Files list box, as global to all designs.

Add to Design

Add the stimulus file named in the Filename box to the Stimulus Files list box, for the current design only.

Edit File

Open a stimulus file you select from the Stimulus Files list for editing.

Specify Part Filter dialog box

To open this dialog

In the Place Part dialog box click the Filter button.

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Contains Simulation Model

Specify that you want to restrict the part search to only parts that have associated PSpice or HDL simulation models.

PSpice Model

Specify that you want to restrict the part search to only parts that have associated PSpice models. You can also restrict the search to only parts that have associated parameterized or non-parameterized PSpice models.

Smoke information

Specify that you want to restrict the part search to only parts that have associated PSpice models that contain smoke information.

HDL Model

Specify that you want to restrict the part search to only parts that have associated HDL models. You can also restrict the search to only parts that have associated VHDL or Verilog models.

Contains Packaging Information

Specify that you want to restrict the part search to only parts that have packaging information.

Transient Output File Options dialog box

The Transient Output File Options dialog box appears when you select the General Settings option from the Analysis tab of the Simulate Settings dialog box, and click the Output File Options button.

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Print values in the output file every:

Specify the interval for printing transient values to the output file.

Perform Fourier Analysis

Perform a Fourier analysis, which decomposes the results of transient analysis to Fourier components.

Center Frequency

Specify the fundamental frequency. Not all of the transient results are used; only the interval from the end, back to 1/frequency before the end is used. This means that the transient analysis must be at least 1/frequency seconds long.

Number of Harmonies

Specify the number of harmonics of the selected voltages and currents to be calculated in the transient analysis.

Output Variables

Specify a list of output variables. The output is split up depending upon the width of the data columns and the output width.

Include detailed bias point information for nonlinear controlled sources and semiconductors (/OP)

Include detailed information about the bias point. The bias point is calculated regardless of whether this option is selected or not. However, if this option is not selected, then the only information about the bias point is a list of the node voltages, voltage source currents, and total power dissipation. Selecting this option can cause the small-signal (linearized) parameters of all the nonlinear controlled sources and all the semiconductor devices to be placed in the output file. This option controls the output for the regular bias point only.


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