[Microsim Schematics Download

[Christel Malden]

I'm a frustrated Orcad Capture user., The "Schematics" capture tool (originally designed by MicroSim and briefly carried along by Cadence) is no longer available so I must use Capture now. Has anyone figured out how to nest hierarchical blocks to various levels? By nest I mean place a symbol referencing a schematic within another symbol referencing a separate schematic within another symbol referencing yet another schematic etc etc... Some symbols reference a schematic with only other interconnected symbols. The actual detailed schematic may be at the 3rd or 4th level down.

In "Schematics" this was very simple to do. I had full circuits at 4 and 5 levels deep with nested symbols/schematics. Unfortunately, I no longer have access to that Schematics based platform. Capture is a cumbersome often frustrating tool that tries to do too much. Anyway, has anyone done the above? Cadence Orcad user guide only describes hierarchical port to one level of depth.

Microsim Schematics Download

Download ✸✸✸ https://t.co/MlBNBPiuxF

SIMetrix can read schematic files created by the PSpice 'Schematics' program. 'Schematics' is the original MicroSim schematic editor but is no longer supported. Current PSpice releases use Orcad Capture for schematic entry. SIMetrix is not able to read Orcad Capture schematics.

If you do not have PSpice on your system then you will need to create a PSPICE.INI file that contains the location of the PSpice symbol libraries. Note that PSpice schematics do not contain local copies of their symbols (unlike SIMetrix) so the symbol libraries are essential to perform any schematic translation. For information see the on-line help topic Schematic Editor >> PSpice Schematics Translation.

You can install PSpice symbol libraries in the same way as SIMetrix symbol libraries. This will make the symbols available for use with SIMetrix. Note that the schematic translator only uses symbols in the PSpice libraries specified using the procedure described above.

1. The translator will convert symbols, parts and wires and display them in a manner that is as close as reasonably possible to the original schematic.
2. It will convert any TEMPLATE properties to the SIMetrix format while preserving the original PSpice template under a different name.
3. It will copy where possible any simulator commands to the F11 window.
4. Hierarchical symbols will be appropriately converted but the underlying schematics need to be converted separately and saved in SIMetrix format.
5. Translated symbols will be copied to PSPICE.SXSLB in the SymbolLibraries directory. By default this library is not installed. If you do install it (see Symbol Library Manager) these symbols can then be used in SIMetrix schematics.

1. It cannot convert buses.
2. Boxes, text boxes, free text and embedded graphics are not supported.
3. Pin attributes are not supported.
4. Hierarchical blocks are not supported but hierarchical symbols are. To use hierarchical blocks, use PSpice to convert them to symbols.
5. The template properties are converted to the SIMetrix format but with one limitation. References to properties that are themselves templates are not supported. These are used in some of the standard ABM blocks supplied with PSpice. These will need to be manually converted by editing the template property.
6. You will not normally be able to cross probe current into a device converted from PSpice. The current into the device will be available but the schematic cross-probing mechanism won't work without manually editing the symbols and template property.
7. PSpice Schematics allows the placement of symbol pins, parts and wires off-grid. The translator will convert these correctly and SIMetrix will display them correctly but they can cause problems if attempting to edit them subsequently. (SIMetrix itself does not permit the user to place off-grid items). If off grid parts are identified, they will be highlighted and a warning will be displayed. Off-grid symbols will also resulting in a warning. If possible we recommend that these are corrected within the PSpice environment before reading the file into SIMetrix.

User interface with presentation quality graphics

• The new PSpice user interface integrates the Probe waveform analyzer with the PSpice simulator into a single application.
• The new simulation setup dialog box has tabbed windows with access to a very organized, self-documenting analysis setup procedure.
• An editable simulation queue shows you how many files are currently in line to be simulated; this allows you to re-order the list.
• The new Probe interface supports presentation quality graphics, adding significantly to the display and printing options to improve reporting and documentation.
• Graphical presentation quality has been improved with user-controlled grid settings, and grid and trace properties (style, thickness, and color), including support for scalable clipboard output to support copying and pasting into documentation packages.

Simulation Profiles

• The new Simulation Profiles feature allows you to specify unlimited named simulation setups that are stored with the project.
• You can specify and store multiple simulations for the same schematic, and run one or more of them at any time. Each simulation profile refers to one root schematic in a design.
• A profile includes one analysis type (AC, DC, or transient) with any or all of the applicable additions (noise, sensitivity, temperature, parametric, Monte Carlo, etc.), specific option settings, and settings for automatically restoring plots after simulation.

Enhancements for simulating large circuits:

• Improved simulation of large circuits
• Improved GMIN stepping algorithm
• New matrix pre-ordering algorithm to speed up simulation of large circuits (.OPTIONS PREORDER)

Enhancements to device models

• Enhanced BSIM3v3.1 MOSFET model
• New EKV MOSFET model
• Bipolar model enhancements
• New Temperature dependencies for the quasi-saturation model parameters GAMMA, RCO, and VO with QUASIMOD=1.0
• New model parameter, XCJS, to allow fraction of CJS to be connected internally to RC

Enhancements to Model Editor (formerly Parts)

• The new Model Editor provides a unified application for editing models either in text form, or by modifying their specifications.
• Darlington Modeling is now supported.

Enhancements to model libraries

• Over 1,000 new simulation models have been added, bringing the total to over 13,000. New libraries include :
• Data Converter (Capture is required for this library - dataconv.olb)
• Transceiver (linedriv.lib)
• Darlington (darlngtn.lib)

The following table lists new and enhanced libraries for R9:

Documentation errataThe "Simulation Examples" chapter is not clear with regard to which ground symbol to use. Use the '0' symbol in \capture\library\pspice\source.olb. You can access this symbol after configuring this library in the Place Ground dialog box.
Reported PSpice problems that have not been fixed for this release These problems have been reported and are not yet fixed for this release of PSpice. This list is intended to cite the most serious problems and is not an exhaustive list of all known problems. Many of these problems have workarounds. Please consult the OrCAD Knowledge Base for updated information.IdTitle5304Request to allow parameters for temperature coefficients on resistor statement.6115Extraction of Darlingtons in the Model Editor is slow.6255Output variables don't translate correctly if they contain 2 nodes and character names. 6526 Request for the ability to copy from a simulation profile summary.6560Marching waveforms displays only one section of a multiple section simulation after completion.6608Scaling problems when copying a metafile to the clipboard.6701Request to allow cursors to work on single data point analysis.6805Request for user defined icons and commands in Customize menu.6882Copy to Clipboard does not include cursor info.6888Request to automatically display the .out file when a simulation error occurs.7069Model Editor: Vbe(sat) curve is discontinuous for BU508 library model.7156The time shown in the PSpice status bar is not always in sync with the time in the Analysis tab.7231Hysteresis curve is incorrect after File, Open of a CORE model.7334 When simulating, Probe window comes up restored even if previously maximized.7563Request for View, Zoom, Fit.7564Request for View, Zoom, Previous.7706No way to suppress "CURRENT MODEL PARAMETERS..." with .MC analysis.7735Request for support of multiple views.7806Request for property to link a text file to a symbol (support for FILENAME in Schematics).7808Make BROWSE dialog box wider in project wizard to show complete paths.7810Request for DRC function in PSpice menu.7812Request for ability to save and load a configuration of libraries.7840Printing fails when error "Can't begin another Print or Print Preview" occurs.7949Cannot change entries in the Library, Include or Stimulus tabs of the Simulation Settings dialog box.8172Shot noise (NSID) for diode is incorrect unless .noise output variable is used.8244PSpice New Simulation does not inherit markers.8253Zoom Area command does not work unless a plot is selected.8328The Trace, Undelete command in PSpice does not refresh the marker colors in Capture.8648Marching waveforms does not work if multiple Probe windows are open for the .dat file.8778Capture overwrites any part library changes done by the Model Editor.8792Closing a page will sometimes remove markers on other open pages.8803Double-click does not work on the negative differential marker.

Q. Why can't I see the PSpice menu in Capture?A. To access the PSpice menu, you must be working on an "Analog or Mixed-Signal Design" project. Every design is associated with a project whose type determines the commands available for it (PCB, Analog, etc.). If the design is separated from its project file, Capture cannot tell the project type and creates a default PCB project for the design. If you create a new design by using the File menu and choosing New, Design, you will get a default PCB project. If you want to create an Analog or Mixed-Signal Design project you should use the Project creation wizard. (From the File menu, point to New and choose Project.)

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