top of page

Skip to content

PRACTICAL GUIDANCE

Find your next step.

Find setup instructions, complete examples and troubleshooting guidance for our tools. Start with your task, then check the version and expected result before applying the steps to your own model.

What would you like to do?

ToolAllGeneral supportInductEx®InductEx-LVS™JoSIM®-ProOptimum™Shared licensingTetraHenry®Article typeAllExplanationGet startedHow toTroubleshootingWorked exampleVersion / sourceAllHistorical / applicability pendingInductEx 7 historicalInductEx 8 previewInductEx 8.0.1 WindowsJoSIM-Pro 2.9 targetLVS 1.1.05 WindowsLVS 1.1.05 manualRelease-specificShared licensingStudio current sourceTetraHenry 1.1.40 manual

Has recorded execution checksClear filters

125 guides

InductEx® · Get started

Run your first microstrip extraction in Studio

Copy the complete microstrip example to a writable folder, open microstrip.ixi, check its inputs and run the extraction from Studio.

InductEx® · Worked example

Understand the parallel-plate capacitance example

This parameterised example uses inline IXI geometry and EQS mode to calculate capacitance between two labelled conductors. It does not require a circuit netlist.

InductEx® · Troubleshooting

Studio Run is unavailable

Select an IXI project, check its inputs and licence, and resolve the issues reported by Check and run.

InductEx® · Troubleshooting

An IXI project cannot find an input file

Check the file reference relative to the saved IXI project. Copy the complete example directory so its referenced inputs remain together.

JoSIM®-Pro · Get started

Run the installed JTL example in JoSIM®-Pro

Open the installed JTL_Example.cir netlist, run it and inspect the resulting traces. The manual recommends this self-contained example for a first simulation.

JoSIM®-Pro · Troubleshooting

JoSIM®-Pro reports a licensing problem or degraded mode

Check the License Manager, configured licence path and service availability. Correct the reported issue, then retry the licence check before simulating.

JoSIM®-Pro · Troubleshooting

A JoSIM®-Pro netlist cannot find an included file

Check the .include reference and preserve the files used by the project. The installed AND example requires base_cells.cir alongside the main example.

Shared licensing · Troubleshooting

The licence daemon starts, but the application is still unlicensed

Check the licence file, product grant and daemon status separately. A responding local daemon does not establish that a particular product is authorised.

Shared licensing · Troubleshooting

Set a custom daemon or licence-file path

The daemon setting identifies an executable; the licence setting identifies a file. Keep these paths separate and use absolute paths.

Shared licensing · Troubleshooting

Generate a System ID after a machine or user change

Generate the identifier on the intended host and in the account/context that will run the software. Transfer the generated file digitally through private support.

Shared licensing · Troubleshooting

NO_SEATS_AVAILABLE after a crash or disconnected session

Check active licensed work and broker status. An interrupted session can retain a seat until its lease is released or expires.

Shared licensing · Troubleshooting

The local daemon runs but cannot reach online licensing

Separate local broker discovery from outbound HTTPS, proxy and certificate problems. Use the underlying error to choose the next check.

Shared licensing · Troubleshooting

A daemon upgrade is installed, but the old version is still running

Finish dependent jobs and restart the broker through the supported upgrade procedure. Replacing files does not update an existing process.

Shared licensing · Troubleshooting

Move software to another machine, OS or execution account

Install the target-platform package and check entitlement for the new context. Copying an executable or an old key does not establish that it will be licensed there.

InductEx® · Troubleshooting

InductEx® reports PRODUCT_NOT_LICENSED or no TTH entitlement

InductEx® Core and Studio request a TTH product grant. Check that grant and the running daemon's support for additional licence files.

InductEx® · Troubleshooting

InductEx® cannot find i.txt or another generated output

Read the earliest failure in the current run log. A missing intermediate file can be a consequence of an earlier failure to reach the solver.

InductEx® · Troubleshooting

Port labels exist in the GDS but InductEx® does not find them

Check the extraction cell, text-layer definition and whether the labels are inside child cells.

InductEx® · Troubleshooting

A port produces a mesh error or appears shorted

Inspect the terminal geometry and the electrical path it actually excites. Check version-specific modelling rules before changing mesh settings.

InductEx® · Troubleshooting

An extracted resistance or inductance looks unphysical

Check agreement between the circuit model and layout, port orientation, coupling and solution quality before accepting the extracted element values.

InductEx® · Explanation

Why are series components reported together with ++ or --?

Historical output uses a combined series branch when the individual component values cannot be identified independently.

InductEx® · Troubleshooting

My example results differ from numbers in an older manual

Compare the exact inputs, process, engine versions and meshing settings before assuming a regression.

InductEx® · Troubleshooting

Check mesh convergence when a run is slow or results change

Use controlled refinement and solution-quality checks. More elements alone do not establish a more accurate or stable extraction.

InductEx® · Troubleshooting

Adding a process layer breaks a connection or shorts a port

Review the complete manufactured stack and via rules. A new resistor or isolation layer can change connections elsewhere in the model.

InductEx® · How to

Convert sheet resistance and thickness to Sigma correctly

Sigma is bulk conductivity in inverse ohms per model length unit. Convert thickness to the LDF length unit before using sheet resistance.

InductEx® · Troubleshooting

Which dielectric settings matter for capacitance?

Use the actual dielectric stack and extraction mode. Check EpsilonR and the environment above and below the structure.

InductEx® · How to

Define additional ground planes in a multilayer process

Mark auxiliary ground-plane layers with the documented IsGP parameter and check their actual geometry and connections.

InductEx® · Troubleshooting

InductEx® or TetraHenry® fails on Linux with a runtime-library error

Check the failing executable and its required runtime against the supported package target. A newer OS name or copied binary does not guarantee ABI compatibility.

InductEx® · Troubleshooting

A legacy InductEx® 7 licence is not found after moving or upgrading Windows

First establish whether the licence is valid for the current host. Historical path lookup and installation settings differ from InductEx® 8.

JoSIM®-Pro · Troubleshooting

JoSIM®-Pro does not launch or the terminal cannot find the CLI

Check installation features and use the provided Linux wrapper. GUI shortcuts and command-line PATH discovery are separate concerns.

JoSIM®-Pro · Troubleshooting

JoSIM®-Pro does not remember the issued licence-file path

Save the path with the documented CLI option alone, then restart the GUI. Combining the path-setting command with version display prevents it being saved.

JoSIM®-Pro · Troubleshooting

A junction model is missing or behaves like the wrong model

Check .MODEL spelling, model names and parameters before changing device physics or simulation settings.

JoSIM®-Pro · Troubleshooting

Coupled inductors cause divergence or invalid-matrix errors

Check the complete inductance matrix for passivity. Keeping each coupling factor between -1 and 1 is necessary but does not guarantee a valid multi-inductor model.

JoSIM®-Pro · Troubleshooting

JoSIM®-Pro reports that the matrix has no solution

Reduce the circuit and check its reference, topology, model values and initial conditions before treating the error as a numerical tuning problem.

JoSIM®-Pro · Troubleshooting

Check temperature, noise bandwidth and sample time in JoSIM®-Pro

Distinguish thermal-noise settings from an explicit NOISE waveform and from temperature-dependent junction model parameters.

JoSIM®-Pro · Explanation

RN, R0 and temperature give unexpected junction resistance

Check the selected junction model and RTYPE. Noise temperature and temperature-dependent junction behaviour are separate settings.

JoSIM®-Pro · Explanation

Choose a transmission-line model before importing external network data

The maintained syntax documents explicit line models with different assumptions. Match the physical model and data format before planning a simulator handoff.

JoSIM®-Pro · Troubleshooting

Variable-step mode rejects a transmission line

Use the documented analysis/integration combination and check whether the selected line model supports variable stepping.

General support · How to

Prepare a useful support report without exposing a licence or private design

Include the first error, exact environment and a minimal reproducible example. Review logs and bundles before sharing them privately.

Optimum™ · Explanation

SP, CSV and EVENT verification give different margins

A margin is defined by its acceptance rule. Compare the verification criteria, time resolution and nominal pass before comparing percentages.

Optimum™ · Get started

Start Optimum™ with a verified nominal circuit

Use the CLI for verification and margin analysis, then inspect generated results in the GUI. Keep the TOML configuration and referenced inputs together.

General support · Troubleshooting

The command runs an older installation than expected

Find the executable selected by your shell, then check its version. Multiple installations can leave a legacy directory earlier on PATH.

InductEx-LVS™ · Get started

Start an LVS comparison with the correct settings and technology files

Run the complete shipped JTL example, read the current comparison report and keep topology success separate from process exit status, graph rendering and electrical accuracy.

InductEx-LVS™ · Troubleshooting

LVS creates a report but no graph PDF

Check the graph-output switches and Graphviz path separately from the connectivity result.

InductEx-LVS™ · Troubleshooting

A compact model has an unfamiliar inductor topology

A reduced circuit can use a different basis from the drawing. Inspect connectivity, coupling thresholds and the validation report before redrawing the model.

TetraHenry® · Explanation

Which file should I give TetraHenry®?

The documented TetraHenry® entry file is JSON. It connects the mesh to materials, excitation, calculation settings and outputs.

InductEx® · How to

Which process file should I use for a numerical comparison?

Keep the calibration source, process revision and model assumptions with each result. A file with the same layer names is not necessarily the same physical model.

JoSIM®-Pro · Explanation

Does setting a junction's instance IC change its other parameters?

Check the model-card critical current and effective instance area. Instance IC can select a scale factor rather than changing only one isolated value.

JoSIM®-Pro · Troubleshooting

JoSIM®-Pro refuses to use the input file as the output file

Choose a separate results filename. The checked CLI and current-source GUI run reject identical input and output paths to preserve the netlist.

InductEx® · How to

Create an IXI file or move a project in Studio

Create a draft IXI, supply the complete physical inputs, and preserve or repair its references when saving elsewhere or copying the project.

InductEx® · How to

Choose the extraction goal and required electrical setup

Match the requested quantity to its formulation and electrical declarations. Inspect what a mode change actually edits, then verify the corresponding model before solving.

InductEx® · How to

Inspect geometry and mesh before running the solver

Run a saved project through Initialise / Reset, Premesh, Mesh and Run solver; inspect the current generated mesh and rebuild the staged session after source edits or restart.

InductEx® · How to

Find the current extraction results and recognise stale output

Start with the IXI Results page and current Output Log, then open the associated numerical files through Artifacts. A file left in the output directory may belong to an earlier run.

InductEx® · How to

Plot and export S-Parameter traces from Studio

Use the S-Parameters view for the intended response, select traces and a frequency band, then export PNG for a figure or CSV for complex numerical samples.

InductEx® · How to

Inspect mesh groups and field plots without changing solver inputs

Open generated mesh or VTK field output in Studio. Group visibility, clipping and display controls help inspect the model; they do not refine the numerical calculation.

InductEx® · How to

Run an IXI extraction from a script or agent

Run a complete saved teaching model in a fresh directory, record the actual CLI/solver identities and accept only current checked artifacts and diagnostics.

InductEx® · How to

Interpret InductEx® process status and printed diagnostic codes

Record the process outcome and the printed controlled diagnostic separately. Use the current log and complete documented reference to choose the correction.

JoSIM®-Pro · How to

Run JoSIM®-Pro from the command line and save numerical output

Run the intended josim-pro-cli executable on a complete working copy of the netlist and select an explicit numerical output filename with -o.

JoSIM®-Pro · How to

Run a circuit from Python with josimpro

Make the matching josimpro extension importable, construct Input and Matrix from a saved circuit, validate readiness and execute Simulation.

JoSIM®-Pro · How to

Understand Python Runtime defaults and netlist overrides

Inspect the resolved plan, choose explicit overrides only where intended, and verify fresh numerical output with a complete three-case Python example.

JoSIM®-Pro · How to

Run the intended saved netlist and recognise stale results

Run simulation from a netlist tab and resolve save/external-change decisions first. Imported result files can be inspected but cannot be simulated.

JoSIM®-Pro · How to

Export waveform figures or numerical CSV/TSV data

Open Plot export studio from the waveform/result view. Choose a figure format for presentation or CSV/TSV to retain numerical trace data.

JoSIM®-Pro · How to

Check a JoSIM workspace before running simulations

Find current source and include problems, follow their exact locations, and distinguish a clean check from filtered-empty, stale or incomplete results.

JoSIM®-Pro · How to

View and arrange a schematic without changing circuit connectivity

Arrange a complete RC hierarchy, save scope-specific layout comments and export the intended schematic; keep circuit statements, numerical results and reproduced visualizer limits separate.

InductEx® · How to

Install and launch InductEx® on Windows

Install the shared licence daemon and the Windows MSI, start InductEx® Studio, then check the installation with a writable copy of the microstrip example.

InductEx® · How to

Install and launch InductEx® on Linux

Use the supplied package for your distribution, launch Studio through its installed entry and run copied examples from a writable directory.

InductEx® · How to

Install and launch InductEx® on macOS

Install the daemon and the matching macOS package, open the installed Studio application and copy the complete example before generating results.

JoSIM®-Pro · How to

Install and launch JoSIM®-Pro 2.9 on Windows

Install the supported License Manager and Windows MSI, select the shortcut/PATH options you need, then check a copied JTL example.

JoSIM®-Pro · How to

Install and launch JoSIM®-Pro 2.9 on Linux

Install the supplied DEB or RPM with dependency resolution, then start JoSIM®-Pro through josim-pro-gui or its desktop entry.

JoSIM®-Pro · How to

Install and launch JoSIM®-Pro 2.9 on macOS

Use the supplied package for your Mac architecture, open JoSIM®-Pro.app or its GUI wrapper, and validate a copied first circuit.

JoSIM®-Pro · How to

Read named waveform arrays and export CSV from Python

Use Results for stored solver-state arrays and Output for named traces and their formatted time axis. Keep each set of values with its matching axis before exporting or plotting.

General support · How to

Use extracted InductEx® values in a JoSIM circuit

Map each extraction branch to the intended simulation element, retain its physical units and use a new annotated simulation deck. The worked example transfers one microstrip inductance and checks its transient voltage.

InductEx® · Troubleshooting

InductEx® finishes but does not create a back-annotated deck

On the checked InductEx® 8.0.1 runtime, move BACK-ANNOTATE from the circuit netlist into the main IXI $CONTROL block, then verify the template, element mapping and fresh annotated output.

JoSIM®-Pro · How to

Write and run a complete JoSIM circuit netlist

Start with a small circuit containing sources, components, analysis and output requests. Save a complete plain-text deck, run it to a separate result file and check quantities against a simple reference.

JoSIM®-Pro · How to

Reuse a parameterised subcircuit from an included library

Define the cell pin order and a named parameter, reference that parameter inside the cell, then set it on the intended X instance. Keep the library beside the main deck and inspect instance-specific output.

JoSIM®-Pro · How to

Choose and refine simulation and output time steps

Refine the integration step while keeping a common output grid, then compare the quantities that matter. A denser plot export alone does not establish a more accurate simulation.

JoSIM®-Pro · How to

Measure transient delays, peaks and scalar results

Add named .MEASURE TRAN statements to a buffered transient run. Read their values and units from the normal diagnostic output, and handle missing events as failed measurements.

JoSIM®-Pro · How to

Make noisy and spread simulations reproducible

Use a nonzero fixed seed, preserve the complete input/settings/runtime and compare the same named traces on the same time grid. Seed zero requests automatic seeding.

JoSIM®-Pro · How to

Stream, compress or keep simulation results in files

Choose explicit CSV/DAT destinations for streamed text, use gzip for supported text output, and distinguish file output from retaining interactive GUI arrays.

JoSIM®-Pro · How to

Sweep parameters and keep every case separate

Declare global parameters, add .STEP LIST or linear dimensions, preview the expanded cases and retain each case’s assignments, seed and output identity.

JoSIM®-Pro · How to

Save a transient testbench with explicit pass and fail criteria

Pair .MEASURE TRAN statements with a josim-testbench/1 JSON definition, write each run to a new directory and inspect the completed report and process verdict.

JoSIM®-Pro · How to

Run a static operating point or DC source sweep

Use standalone .OP for one equilibrium or .DC for independent source-bias points. Inspect scalar values or the swept-source axis; these are not time-domain or hysteresis results.

JoSIM®-Pro · How to

Run and interpret a complex small-signal AC analysis

Use one .AC analysis, explicit nonzero AC source attributes and .PRINT AC selectors. Read magnitude and phasor angle against frequency, while retaining typed real/imaginary data for numerical work.

InductEx® · How to

Create parameterised IXI geometry without a GDS file

Build a complete three-file MQS strip using explicit IXI variables, a teaching process and matched circuit ports, then check the current extraction.

InductEx® · How to

Define and inspect an LDF fabrication process

Separate layout layer numbers, stack order, physical dimensions, material properties and result units using a complete three-layer teaching example.

InductEx® · How to

Build the circuit netlist required for extraction

Describe the branch model and port-to-node topology that InductEx® fits, with consistent design units and a complete microstrip netlist.

InductEx® · How to

Define layout ports and match them to the circuit

Connect each named port to its positive/negative material layers, an actual terminal edge and the corresponding circuit nodes.

InductEx® · Troubleshooting

Results still says Completed after I edit an IXI file

The checked Studio candidate can retain the earlier Completed result after a saved source edit. Save the intended inputs, use Run again and check the new verdict and values.

InductEx® · How to

Choose mesh settings and measure memory and runtime

Refine a complete fixed MQS example in separate directories, compare current inductance and diagnostics, and measure the cost before choosing the next mesh.

InductEx® · How to

Export a mesh snapshot and recover a failed save

Prepare the visible mesh, export its canvas as PNG and check the companion report. If the destination fails, choose an existing writable folder and retry without rerunning the calculation.

InductEx® · How to

Generate and inspect magnetic field and current density plots

Request B and J from a complete MQS strip, inspect the emitted excitation arrays in Studio and choose field displays and ranges with their coordinate and metadata limits explicit.

InductEx® · How to

Inspect, edit and save a GDS layout in Studio

Inspect the layout layers, replace a plain-TEXT port label, save a complete derived project and recover its matching netlist. Decorated-text limits remain explicit.

JoSIM®-Pro · How to

Embed JoSIM from C or C++ through the C API

Build a complete C11 or C++17 client, run a circuit, read named transient arrays and release owned handles. Matching SDK components and current error diagnostics keep integration predictable.

Optimum™ · How to

Configure and interpret an Optimum™ margin study

Select a consumed parameter, verify the nominal circuit and read both margin sides against known bounds. Search resolution, parameter dependence and verification tolerances have distinct roles.

Optimum™ · How to

Configure and interpret an Optimum™ yield study

Define the acceptance rule and three-sigma spread, run a finite seeded sample population and distinguish its observed pass fraction from model probability and fabrication yield.

Optimum™ · How to

Run Optimum™ optimisation and verify the saved candidate

Search for a better critical-margin centre, inspect the stopping outcome and separately verify the numeric circuit that was actually saved.

Optimum™ · How to

Inspect and run Optimum™ with structured JSON receipts

Use the native C API from a complete Python client, distinguish readiness from execution and handle owned study results and verified artifacts without parsing console summaries.

InductEx® · How to

Run an InductEx® parameter study with separate checked cases

Sweep a complete microstrip teaching model over length and width, retain each extraction and reject incomplete studies. Recognise the legacy SWEEP warning and its exit-zero trap.

InductEx® · How to

Refine S-Parameter frequencies and distinguish solved data from plot detail

Run nested frequency grids on a complete two-port teaching line, compare complex responses and understand what Studio zoom and CSV export can interpolate.

InductEx® · How to

Create and verify a portable InductEx® calculation record

Preserve relative input names and selected numerical files, verify their hashes, and rerun the complete teaching project in a separate directory.

InductEx® · How to

Export a selected Studio support bundle and review its contents

Choose saved documents and raw logs explicitly, understand what the ZIP contains, and recover from an export failure without confusing it with a runnable project.

TetraHenry® · Get started

Run and validate a standalone TetraHenry® calculation

Run a complete JSON and modified FastHenry conductor example with the bundled TTH executable, check its signed current against a known DC resistance and retain each run separately.

TetraHenry® · Troubleshooting

TetraHenry® writes a result but reports conflicting convergence status

Check the process verdict, current-generation output, diagnostic fields and an independent reference together. Conflicting DIRECT/GMRES summaries are tracked on one TTH 1.1.50 DC example.

InductEx® · How to

Export LDF layer mappings as InductEx-LVS™ technology JSON

Review the outbound conversion, resolve explicit layer choices, inspect omissions and save a new JSON file and conversion report without rewriting the LDF.

JoSIM®-Pro · Worked example

Characterise a junction model with an IV curve

Run a complete .IV model, read voltage/current coordinates and bias order, then check the model assumptions and numerical reference before accepting its behaviour.

JoSIM®-Pro · Troubleshooting

An IV curve or run record does not match the expected model

Separate the resistance law, bias grid, helper transient and record metadata before attributing a mismatch to a simulator failure or accepting software completion as numerical accuracy.

InductEx® · How to

Use a protected process file and diagnose access failures

Set the main-process passkey through the visible Studio controls, distinguish licence/key/expiry failures and account for two reproduced protected-file compatibility limits.

JoSIM®-Pro · How to

Find declarations, references and source locations

Use Outline, Peek and exact reference targets without losing unsaved source; inspect the same source graph from a complete agent client.

JoSIM®-Pro · How to

Use completion, linked snippets and live diagnostics

Complete local parameters and quoted include paths, fill a linked subcircuit template and recover through current diagnostics and Undo.

InductEx® · How to

Import an external Gmsh structure and check its result

Generate a complete first-order bar mesh, assign its material and port surfaces, inspect it in Studio and verify units, transforms, refinement and current failure recovery.

InductEx® · How to

Model package bonds and check their electrical contacts

Run complete bump, wedge and ball-and-stitch examples, check transformed die/pin contacts and material units, refine the bump and recover a reproduced coarse-wire failure.

JoSIM®-Pro · How to

Choose JoSIM settings by scope and recover an override

Identify the effective editor layer, distinguish active-tab run settings and recover first project Save or invalid JSON.

JoSIM®-Pro · How to

Run isolated Linux sweep workers with explicit memory limits

Compare a complete six-case serial and parallel study, inspect worker admission and recover from rejected or interrupted runs.

JoSIM®-Pro · How to

Compare cases and create derived traces or measurements

Select current matching cases, subtract their voltage traces, apply a scalar and record a mean while preserving the original data.

JoSIM®-Pro · How to

Hand off an already fitted line model from external network data

Understand the Touchstone import limit, preserve port/reference conventions and validate a supplied passive real-pole WIDEBAND model against a complete two-port example.

JoSIM®-Pro · How to

Review Git changes, stage selected lines and resolve a source conflict

Keep buffer, disk, index and HEAD distinct; review staged replacements, recover local index actions and resolve a conflict without confusing syntax review with simulation evidence.

InductEx® · How to

Restore Studio panels, preferences and a saved session

Reopen saved work, verify panel sizes, back up preferences and distinguish layout reset, settings import and session reset—including the checked recovery limits.

JoSIM®-Pro · How to

Preview and apply JoSIM quick fixes across source files

Review exact token replacements before applying them to unsaved buffers. Cancel, changed-source rejection and linked Undo/Redo preserve a deliberate editing boundary.

JoSIM®-Pro · How to

Check saved JoSIM inputs before running a simulation

Use the explicit licensed setup check for saved root/include files. Its result is separate from live diagnostics and from numerical simulation output.

JoSIM®-Pro · How to

Drive JoSIM from a custom waveform or uniformly sampled CSV

Keep amplitude samples, time spacing, interpolation and repeat behaviour explicit; load the complete external files and verify their timing and units with a checked example.

JoSIM®-Pro · How to

Simulate a diode and check current, charge and reference limits

Use a D model with explicit temperature, area and charge parameters. Run the complete OP/DC/AC/transient inputs, retaining two known diode reference limits.

JoSIM®-Pro · How to

Define and validate polynomial current and charge

Use the Y designator and a POLY model, keep current and charge coefficient units explicit, and compare static, complex and transient outputs with independent equations.

JoSIM®-Pro · How to

Use dependent sources and verify their control direction

Choose E/G/F/H with explicit gain units and control terminals. Check input loading, current direction and loaded output signs using a complete ideal network.

JoSIM®-Pro · How to

Compare and restore a previous saved source version

Use Local save history to review an earlier version, restore its text and format to the editor, then choose deliberately when disk should change.

JoSIM®-Pro · How to

Choose autosave and recover unsaved source

Control when named sources are written, resolve blocked autosave deliberately and recover checkpointed edits as unsaved copies.

JoSIM®-Pro · How to

Search and replace across a workspace

Find literal matches in current buffers and saved sources, review selected files and apply one reversible editing group before saving deliberately.

bottom of page