Home / Release Notes

6.11.1.0

July 19, 2026

Added

• QuickChart – VNA-style Y-Axis (Ref Level + Scale/Div): Set the Y axis by a reference level (the top line) and a fixed scale per division, like a VNA. Works for magnitude, phase, group delay, and VSWR, and "Calculate from Data" fills in values that fit your traces. Available in QuickChart, Port Mapper, and Mixed Mode Analyzer.

Changed

• New charts open in VNA style by default. They scale the Y axis by reference level and scale/division; switch to "Fit to data" in Settings for the previous behavior.
• Home Page: The Tools section is now a compact tile grid.
• Reset View: The chart's Home button is now "Reset View," which undoes pan and zoom.

6.11.0.0

June 28, 2026

Added

• Use TstoneLab from an AI Assistant (MCP): Connect TstoneLab to Claude Desktop and ask about your Touchstone files in plain language — summarize a file, read an S-parameter, list a folder, or screen a folder of files against a spec. A guide on the Home page walks you through the setup.

6.10.3.0

June 21, 2026

Added

• AI Assistant Integration (preview — not yet enabled): Initial groundwork for using TstoneLab from an AI assistant. It ships in this release for internal testing and is not turned on for general use yet.

6.10.2.0

June 14, 2026

Added

• DecoChart – Data Format: Plot each chart as magnitude (dB or linear), phase, group delay, or VSWR.
• DecoChart – Template Gallery: Redesigned template picker with built-in publication, presentation, datasheet, and analysis styles, plus search, categories, favorites, and recently-used. Hover a template to preview it on the chart.
• DecoChart – Trace Patterns: Choose a dash pattern set (solid, classic, or extended) from the Traces tab.
• Port Mapper (New Tool): Port renumbering and port-subset selection, split out from the Mixed Mode Analyzer. Open it from the Home page, the New Tab menu, or the file right-click menu.

Changed

• DecoChart – Toolbar: New top action bar with a Styles button to show or hide the settings panel; secondary actions collapse into a menu on narrow windows.
• DecoChart – X-Axis Title: New charts label the X-axis with the frequency unit automatically.
• Mixed Mode Analyzer: Now focused on the 4-port mixed-mode transform only.
• Marker Target Window: Hidden when there is only one pane, and shows each pane's resolved title.
• Smith Format Labels: Smith format options in Quick Settings now show as text (Imp / Adm / Both).

Fixed

• DecoChart Stability: Reliability fixes to template saving, trace visibility, logo handling, and chart rendering.

6.10.1.0

May 31, 2026

Added

• QuickChart – Hover Probe File Labels: In multi-file charts, the hover readout now marks each trace with a file tag (F1, F2, …) and lists which file each tag refers to.
• QuickChart – Quick Settings Panel: A pane's quick settings (chart type, data format, axis scale, VSWR, and Chart Properties) now sit in an always-visible panel on the left instead of a pop-up menu.
• QuickChart – Traces Button: Trace selection moved to a single "Traces" button on the toolbar, next to Layout and Markers.
• QuickChart – Title Placeholders: Chart titles can now include placeholders that fill in automatically — the file name, the window number, and how many files are charted.

Changed

• Charts Named After Their File: New chart panes are now titled with their file name by default.

6.10.0.0

May 29, 2026

Added

• QuickChart – Hover Probe: Hover over a chart to read your traces — each line under the pointer thickens and shows the value at the nearest point (a tooltip on regular charts, a Γ / impedance / admittance panel on Smith charts). Turn it on or off per pane from the right-click menu or Chart Properties.

6.9.6.0

May 25, 2026

Added

• QuickChart – Copy & Paste Format: Copy the look of one chart pane and apply it to another, including saved format templates for repeated chart styling.
• QuickChart – Element Properties: Open focused settings for chart titles, axes, traces, grid areas, Smith grid, and the VSWR circle.
• QuickChart – Hover Highlights: Chart elements now highlight as you move over them, making it clearer what will be edited before you click.

Changed

• QuickChart – Clearer Active Pane: The selected chart pane is easier to spot with a new visual indicator.
• QuickChart – More Predictable Toolbar: Quick settings now open by click, making the toolbar behavior steadier while working across panes.
• Trace Styling: Trace colors and styles now stay with each chart pane, making multi-chart layouts easier to manage.

Fixed

• Chart Pane Interaction: Improved pointer handling so using pane controls is less likely to change the selected chart by accident.
• General Stability: Includes small reliability improvements across chart editing and launch flows.

6.9.5.0

May 17, 2026

Added

• QuickChart – Pan & Zoom: Wheel to zoom, drag to pan, drag a box to zoom into a region, and double-click to reset (Cartesian charts).
• QuickChart – Quick Settings: Hover (or click to pin) a chart pane's menu button for instant chart type, data format, axis scale, and Smith VSWR options — no need to open Chart Properties.
• QuickChart – Adjustable VSWR Circle: The Smith VSWR circle now shows its value (e.g. "2:1") and can be dragged to change it.
• Comma Decimal Files (Optional): A new setting can accept Touchstone files that use commas — off by default.
• DecoChart – Files: A Files button to manage which files are charted.

Changed

• Smoother Chart Navigation: Pan and box-zoom now behave correctly on log axes, and chart gestures show in the right-click menu.
• Consistent File Tree: The workspace file tree looks and works the same across the Explorer, chart Files dialog, and Touchstone Properties picker.

Fixed

• Files Dialog Crash: Fixed a crash when opening the Files dialog from a chart.
• DecoChart Multi-File: Fixed a crash in DecoChart's multi-file trace matrix.

6.9.4.0

May 11, 2026

Fixed

• Right-Click Menu in Folders: When you right-clicked a file inside a folder you had opened, the menu used to show every action grayed out until you double-clicked or expanded the file first. The menu now starts the file reading on its own and the actions light up as soon as the file is ready.
• File Info Stays Correct After Opening a Chart: Fixed a glitch where double-clicking a file inside a folder briefly replaced its Ports / Points / Freq Range / Impedance / Parameter rows with "-".
• Double-Click No Longer Pops the File Open: Double-clicking a file inside a folder now just opens the chart. The small info list under the file no longer expands at the same time.
• One Click to Expand: Clicking the arrow next to a file inside a folder now expands it on the first click instead of needing a second click.

Changed

• Touchstone Editor on Unreadable Files: If a file fails to read, the right-click menu now keeps Open in Touchstone Editor and Reveal in File Explorer available so you can still inspect or locate the file. Chart-related actions stay disabled, and the tree shows a short "Parse failed: …" message under the file.

6.9.3.0

May 10, 2026

Added

• Touchstone Editor – Matrix Order Badge: Shows row/column-major order with the on-disk column headers.
• Touchstone Editor – Jump to Source Line: "line N" link jumps the cursor back to the matching row.
• Touchstone Editor – Precise Frequency Tooltip: Hover the frequency label to see the exact Hz value.
• Touchstone Editor – Reorganized Info Panel: Cleaner 3-row layout; token text is selectable.

Changed

• Touchstone Editor – Steady Layout: No more shifting when moving between data and comment lines.

Fixed

• Touchstone Export for 3+ Port Files: Fixed a transpose issue when exporting 3+ port files.

6.9.2.0

May 08, 2026

Fixed

• Touchstone S-Parameter Indexing: Fixed an issue where data traces could be displayed transposed for certain Touchstone files.

6.9.1.0

May 06, 2026

• Maintenance update with internal build improvements. No user-facing changes.

6.9.0.0

May 06, 2026

Added

• S-Parameter Simulator (New Tool): A brand-new circuit simulator — draw your network on a schematic canvas, sweep frequencies, and see the S-parameters on Cartesian and Smith charts. Components include resistors, inductors, capacitors, transmission lines, open/short stubs, quarter-wave transformers, Touchstone N-port blocks, external ports, and junctions.
• Time Domain Analyzer (New Tool): A dedicated TDR/TDT analysis tab with axis controls, properties panel, trace add/remove, warning indicators, auto distance mode, and CSV/PNG export.
• Workspace Explorer: The Explorer tree is now wrapped under a single Workspace node, rows are denser, and roots and files use distinct icons with type badges.
• Home Page: Feature cards on the Home page are now clickable to open an empty tool tab. The S-Parameter Simulator joins the catalog.
• + New Tab Menu: Grouped into Viewer/Editor and Analyzer/Simulator sections, with consistent accent-colored icons across all items.

6.8.0.0

April 18, 2026

Added

• SmithChart Designer (New Tool): A brand-new impedance matching design tool — build matching networks on the Smith Chart with L-networks, series/shunt components, and transmission lines.

6.7.0.0

April 07, 2026

Added

• Instrument Remote Control: Connect to VISA-compatible instruments and measure S-parameters directly from the app using SCPI commands.
• SCPI Editor: A dedicated editor tab for writing and executing custom SCPI commands with a wider workspace.
• Remote Control Guide: An in-app guide page to help you get started with instrument remote control, accessible from the Home page.
• Reveal in File Explorer: Right-click any file in the Explorer to open its location in Windows File Explorer.
• Auto Chart after Measurement: The chart tab now opens automatically after measuring and saving data.

Changed

• Explorer Tree Reorganized: The Explorer tree is now organized into 3 clear sections: Instruments, Individual Files, and Folders.
• Tree Navigation: Clicking on folder and group nodes now expands or collapses them directly. New files are automatically revealed in the tree.

6.6.0.0

April 06, 2026

Added

• DecoChart (Beta): A brand-new chart decoration tool for creating presentation-ready charts. Customize titles, axes, traces, legends, backgrounds, and padding through an intuitive ribbon-style settings panel.
• DecoChart – Templates: Choose from preset chart styles in the template gallery to quickly apply a polished look.
• DecoChart – Logo Overlay: Add your company logo to charts with adjustable position, size, opacity, and aspect ratio lock.
• DecoChart – Copy to Clipboard: Copy your decorated chart directly to the clipboard with one click.
• DecoChart – Zoom Control: Zoom in and out of your chart with the on-screen zoom bar, including fit-to-page and reset.
• DecoChart – PNG Export: Export your decorated chart as a PNG image.
• Touchstone Editor: A new editor tab with syntax highlighting, in-editor search (Find), frequency info panel, and Save support.
• MMA Tab: Mixed Mode Analyzer is now available as its own dedicated tab, with full Markers support.
• New Tab Menu: Click the "+" button on the tab bar to choose which type of tab to open (Chart, Editor, MMA, DecoChart).
• Drag & Drop to Open: Drag files from the Explorer pane directly onto a tab to open them.
• Unified Recent: Recent Files and Recent Folders are now combined into a single Recent list.

Changed

• App Name: The app has been rebranded from S-View to TstoneLab.
• Home Page: Redesigned with a clean single-column layout featuring 4 quick-access feature cards.
• Close All Tabs: Moved to the tab right-click menu for a cleaner tab bar.
• Tool Icons: All tool tabs now display unique custom icons for easier identification.

Fixed

• DecoChart Stability: Fixed various display and navigation issues in DecoChart.
• Touchstone Editor: Fixed frequency information not matching the correct data line.
• Trace Visibility: Fixed trace visibility not being preserved when switching between tabs.

6.5.4.0

March 21, 2026

Added

• Close All Tabs: A new "Close All Tabs" button in the tab bar lets you quickly close every tab except the Home tab.
• Collapsed Pane Quick Access: When the Explorer pane is collapsed, you can now access your files and folders directly from flyout menus without expanding the pane.
• Keypad Error Feedback: The engineering keypad now shows an error message inline when an invalid value is entered.

Changed

• Individual Chart Tabs: Opening multiple files now creates a separate Chart tab for each file.
• Marker Settings Panel: Reorganized panel sections with a clearer active marker label.

Fixed

• Dialog Theme: Fixed some dialogs not following the app's selected theme.

6.5.3.0

March 20, 2026

Changed

• StatusBar Redesign: The status bar now shows context-aware information based on your current view.
• Marker Settings Panel: Improved layout and styling for better readability and visual clarity.
• UI Polish: Refined colors and styling across TitleBar, StatusBar, Marker Table, and charts.

Fixed

• Light Mode Visibility: Fixed marker table and pane icons being hard to see in Light mode.
• Files Dialog Theme: Fixed the Files dialog not following the app's selected theme.

6.5.2.0

March 19, 2026

Changed

• Resizable Explorer Pane: The Explorer pane can now be resized by dragging its right edge. Drag the border between the Explorer and the main content area to adjust the pane width freely (200–600 px). The pane remembers your preferred width across open/close toggles.
• Invisible Trace Dimming: Markers on hidden traces now appear dimmed in both the Marker Table and the Target Trace dropdown, making it easy to tell which markers are currently active on the chart.
• Files Management TreeView: The Available Files list in the Files Management dialog now displays a hierarchical folder/file tree instead of a flat list, matching the Explorer pane layout.

6.5.1.0

March 18, 2026

Fixed

• Open Folder Files: Fixed an issue where files opened via Open Folder were not appearing in the Available Files list in the Files Management dialog.

6.5.0.0

March 17, 2026

Added

• Coupled Marker Mode: Synchronize marker frequencies across multiple traces. When enabled, moving one marker automatically moves all coupled markers to the same frequency. A star (★) indicator highlights the master marker.
• File Explorer TreeView: The File Explorer now displays files and folders in a hierarchical tree view with expandable folders and Touchstone file metadata.
• Open Folder: Open an entire folder of Touchstone files at once using the new Open Folder button in the Explorer pane and Home page Quick Actions.
• Auto Chart View: Opening files now automatically switches to the Chart View tab so you can see your data immediately.

Changed

• Marker Settings Panel: Redesigned with a cleaner single-marker target layout and vertical scrolling for easier access on smaller screens.
• Marker Controls: Marker frequency and function controls are now disabled when a marker is hidden, preventing accidental adjustments.
• Explorer Pane Header: Refreshed with compact icon-only buttons and subtler drag-and-drop hints.

Fixed

• Recent Files: Fixed an issue where clicking a recent file did not display it in the File Explorer tree.

6.4.0.0

March 15, 2026

Added

• Peak Search: Find peaks and valleys in your traces with directional search (left/right) and configurable search options.
• Active Marker Bar: Quickly switch between up to 8 markers using the new button bar in the Marker Settings Panel.
• Fast Step Buttons: Rapidly adjust marker frequency with dedicated fast step controls.
• Pane Position Indicator: The Target Window selector now shows a mini-grid icon indicating each pane's position in the chart layout.
• Trace Color Indicator: The Target Trace selector now displays a color dot matching each trace's color.

Changed

• Marker Settings Panel: Redesigned the marker panel with a cleaner layout and collapsible sections.
• Files Management UX: Double-tap items in the file management dialog to quickly transfer them between lists.

Fixed

• Target File Selection: Fixed the file selector not showing the correct initial selection in multi-file mode.
• Smith Chart Markers: Disabled unsupported marker functions when viewing Smith Charts.

6.3.0.0

March 10, 2026

Added

• Multi-File Chart: View data from multiple files on a single chart for side-by-side comparison.
• Trace Matrix Batch Controls: Row, Column, and All toggle buttons in the Trace Matrix header for batch show/hide of S-parameter traces. Files with 5+ ports automatically open in a dedicated dialog.

Fixed

• Recent Files Reliability: Improved stability when opening files from the Continue list.

6.2.0.0

March 03, 2026

Added

• Group Delay Format: Added Group Delay data format for Cartesian charts with auto-scaled time unit display (ms/µs/ns/ps) in the marker table.
• Trace Color Customization: Customize trace colors with 5 built-in palettes and per-trace color overrides via Chart Properties, trace badge context menus, and the Settings page.
• Release Notes Page: Added a dedicated Release Notes page accessible from the Home dashboard's "What's New" button.

Changed

• Engineering Keypad UX: Live input preview and clearer field labeling in the keypad flyout.

Fixed

• Smith Chart Color: Fixed traces on Smith Charts not reflecting their assigned colors.

6.1.1.0

February 12, 2026

Added

• Complex Display Formats: Support for Polar (Magnitude ∠ Angle) display in the marker table for Γ, Z, and Y values.
• Marker Persistence: Markers are now semantically preserved and auto-restored when switching between different data formats.

Fixed

• Layout Integrity: Fixed artifacts when shrinking multi-pane layouts.
• Marker Reliability: Automatically releases markers targeting hidden panes and fixes target window selection.
• Marker Table UI: Fixed intermittent missing values and improved table column sizing.
• Smith Chart UX: Removed misleading "(dB)" suffixes from trace labels when viewing Smith plots.
• Linear Formatting: Corrected unit handling for Magnitude (Linear) to remove redundant "dB" suffixes.

6.1.0.0

February 07, 2026

Added

• Mixed-Mode S-Parameters: Added mixed-mode S-parameter analysis for 4-port networks (Sdd/Sdc/Scd/Scc).
• Touchstone Export: Added flexible Touchstone file export options.
• Port Tools: Added port renumbering and subset selection.
• Markers: Added frequency entry and keyboard arrow-key control for precise marker movement.
• Engineering Keypad: Added an engineering-format keypad for rapid numeric input.
• Home Dashboard: Redesigned the Home dashboard for quicker access to common actions.

6.0.2.0

January 13, 2026

Fixed

• Touchstone S-Parameter Indexing: Fixed an issue where data traces could be displayed transposed when loading certain Touchstone files.

6.0.0.0

January 08, 2026

Added

• Multi-layer Support: Added support for multi-layer structures to handle complex data hierarchies efficiently.
• File Explorer UI: Introduced a card-style layout for the File Explorer to improve readability and usability.