Read Waveform from File (Digital) VI
- Updated2025-07-30
- 2 minute(s) read
Opens a file created with the Write Waveforms to File VI and reads one record of the file. Each record might contain one or more separate waveforms. To retrieve all records in the file, call this VI in a loop until the end of the file is reached.
This VI returns an end-of-file error in the error out output.

Inputs/Outputs
file path (dialog if empty)
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file path specifies the file where the waveform is located. If you do not wire this input, LabVIEW displays a non-native file dialog box instead of a native file dialog box.
offset (records:0)
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offset specifies in records which record to read from the file. The first record is 0. The default is 0.
error in (no error)
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error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
new file path (Not A Path if cancelled)
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new file path returns the path to the file.
digital waveform
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digital waveform returns the data of the first waveform in the record.
error out
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error out contains error information. This output provides standard error out functionality. |
file path (dialog if empty)
—
offset (records:0)
—
error in (no error)
—
new file path (Not A Path if cancelled)
—
digital waveform
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error out
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