RF evaluation / free preflight tool

Touchstone S-Parameter Viewer

View one- and two-port S-parameter magnitude and phase. Compare files only with matching frequency grids, reference resistance and declared conditions.

What to provide

Explicit-option-line Touchstone 1.x .s1p or .s2p data in RI, MA or DB format. Optional second file for a matched comparison.

What you get

Magnitude and wrapped-phase plots, frequency range, port count and complex-difference statistics for a valid comparison.

Local processing. These checks do not send input files, pasted content or reports to a TOMPW server, AI model or cloud parser. Input is held in page memory only. The website still has its usual page analytics. For fully offline or highly sensitive work, use the local source package.

Touchstone input A

Touchstone input B (optional)

Port countFor a comparison, I have confirmed equal port order, reference plane and measurement/simulation conditions. The tool checks only the declared file grid and reference resistance.

No current result. Review inputs, then run the check. Editing an input clears the previous report.

Disclaimer: This tool and its outputs are for reference and preliminary evaluation only, not design, manufacturing, qualification or commercial approval; verify all results with the responsible supplier or engineer.

Download offline source package 1.1.0 (ZIP)Review source, tests and licenses on GitHub

Original MIT-licensed models, Node CLI, synthetic tests and optional Python readers. No customer files or dependency environment is included. Read the bundled README and third-party notices before use or redistribution.

Source archive SHA256

Before using this in a handoff

No de-embedding, renormalization, interpolation or compliance claim. Extended Touchstone files use the optional local scikit-rf reader.

All built-in examples are synthetic, not product data, customer evidence or supplier commitments. Retain the input revision and review the downloaded report with the responsible provider.

Related service handoff

Test planning and coordination RF package handoff Discuss requirements through an agreed disclosure channel All engineering checks and planning calculators