You can select any continuous part of a signal directly inside the signal window:


How to select a range


  1. Move the mouse cursor over the signal.
  2. Press and hold the left mouse button.
  3. Drag the cursor left or right to mark a region.


The selected region will be highlighted using inverted colors.



Extending the selection


While holding the mouse button during selection, you can press:


  • Home → extend the selection to the beginning of the signal
  • End → extend the selection to the end of the signal


Tooltip with selection details


During selection, SIGVIEW shows a small tooltip near the mouse cursor containing the start, end, and length of the selected range. This makes it easy to check the exact time/frequency span you are selecting.



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Viewing exact selection values


After selecting a region, right-click anywhere inside it.

The context menu will show:


  • Exact start position
  • Exact end position
  • Exact length of the selected segment


This is particularly useful for measurement tasks such as:


  • Determining the time difference between two FFT peaks
  • Checking the duration of a specific waveform segment
  • Measuring distances between features inside a signal


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