Questions about TdmsSlice

TdmsSlice is a lightweight Windows utility for opening TDMS files, inspecting Groups, Channels, and metadata, previewing supported Channel data, selecting a sample range, and exporting that range to CSV with companion metadata JSON.

Yes. TdmsSlice performs its own TDMS inspection and export workflow and does not require DIAdem or LabVIEW to be installed.

No. TdmsSlice reads the source TDMS file for inspection and export. It does not rewrite the original TDMS file.

No. TdmsSlice does not write or rewrite TDMS files. Its export workflow writes the selected Channel range to CSV and also creates companion metadata JSON.

Normal TdmsSlice processing is local. Your TDMS file does not need to be uploaded to a cloud service for opening, previewing, or CSV export.

Yes. Select a Channel, set Start Index and Count, confirm the resulting range, and export only that selected part of the Channel.

Yes. TdmsSlice keeps the original Channel sample index in the CSV rather than renumbering the selected range from zero.

When valid waveform timing information is available, TdmsSlice can include relative time or absolute UTC time in the CSV. A raw Timestamp Channel is treated as its own Channel and is not automatically joined to another value Channel.

CSV export also creates metadata JSON describing the source, selected Group and Channel, data type, selection range, timing information, and related export context. It is intended to preserve information that would otherwise be easy to lose when data is moved to CSV.

Not in the initial release. The current workflow selects one Channel and one range at a time. Multi-Channel export, batch processing, and CLI automation are not part of the initial release.

Not in the initial release. TdmsSlice currently focuses on CSV export with companion metadata JSON.

TdmsSlice supports common numeric types and Boolean for Quick Preview and CSV export, and also supports String, raw Timestamp, native Complex, and DAQmx Raw Data through defined product paths. Preview availability differs by data type. See the Supported Formats page for the current matrix.

String, raw Timestamp, and native Complex Channels are supported for CSV export but do not use the waveform Quick Preview in the initial release. TdmsSlice does not force these data types into an artificial numeric waveform display.

TdmsSlice uses the scaling-applied values returned by npTDMS for supported DAQmx Raw Data. The initial release does not expose raw scaler values or a raw-versus-scaled output switch.

No. TDMS files can contain many data types, scaling combinations, and internal structures. TdmsSlice has explicit supported and unsupported product paths and is designed to stop or disable value operations when a path is not supported rather than present unverified data as valid.

Use TdmsSlice Evaluation with the files you actually work with. Evaluation uses the same core TDMS reading, supported data types, preview behavior, metadata features, and safety behavior as Standard.

Evaluation and Standard use the same core TDMS reading, supported data types, Quick Preview, metadata features, time handling, and safety behavior. Evaluation limits CSV export to 100 samples per export. Standard removes that Evaluation sample limit.

No. Standard is planned as a one-time purchase rather than a recurring subscription.

The licensing policy is 1 license for 1 PC. Several people may use TdmsSlice on the same licensed shared PC.

No. Standard registration is performed locally using the supplied license file. Normal use does not require online activation or recurring online license validation.

Yes. End use of the license on the old PC before moving it to the replacement PC so that the 1-license-per-PC condition continues to be met.

No. A purchased Standard 1.x license does not expire. Fixes or improvements published for Standard 1.x can use that license. A future major version may require a separate license.

The official minimum operating system for the initial release is Windows 11 x64.

No. TdmsSlice is distributed with the required .NET components and an app-local Python runtime including the TDMS-reading components it uses.

The initial release is distributed as a portable ZIP. Extract the ZIP and run TdmsSlice.exe from the extracted TdmsSlice folder.

Windows may show a SmartScreen warning for a newly downloaded application. If a warning appears, first confirm that the ZIP came from the official Seven Dwarfs Software website. Release-specific guidance will be finalized using the actual public download path.

No. Bug reports, questions, and feature requests may be accepted and considered on a best-effort basis, but individual replies, investigation, fixes, feature implementation, and response times are not guaranteed.

Yes. Feedback about your real TDMS workflow is useful, especially what you are trying to do, how you do it today, and what would make that workflow easier. Do not include confidential or proprietary data in feedback unless specifically requested through an appropriate channel.