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Cursor Measurements

Left Mouse Button:
Pressing the left mouse button anywhere within the plot region will display horizontal and vertical measurement boxes containing the values of the X and Y positions pointed to.  

Control Key + Left Mouse button:
Holding down the Control Key and clicking the left mouse button anywhere within the plot region and dragging will display horizontal and vertical measurement boxes containing the differential values of the X and Y positions relative to the starting point.  This is very useful for measuring the difference between two points on the plot.

Shift Key + Left Mouse button:
Holding down the Shift Key and clicking the left mouse button anywhere within the plot region will display a set of "harmonic cursors".  These cursors show the first 10 harmonic frequencies.  This is very useful for identifying harmonically related components within a complex spectrum.

Control + Shift Key + Left Mouse button:
Holding down both the Control and Shift Keys and clicking the left mouse button anywhere within the plot region will display a set of "sideband cursors".  These cursors show additional measurement lines on both the upper and lower sides of the start point.  This is very useful for identifying modulation related components within a complex spectrum.

Right Mouse Button:
Pressing and holding the right mouse button within any plot will activate a popup menu containing additional editing and processing options.  The contents of this popup menu depends upon the specific plot.   See the Right Click Action Menu topic for more information.

The Spectrum and Phase plots will "pull" the cursor to the trace along the amplitude axis.  This can be disabled from the spectrum/phase display options dialog box.

Notes:
  • It is recommended that you "Stop" the Analyzer while using these mouse actions.  There are no corresponding keyboard commands.
  • The 3-D Surface plot can be deceptive; you must measure along the base (X-axis) of the plot to determine the correct frequency.  Aligning with the top of a peak will skew the measurement to the left because of the perspective orientation of the display.

    See also:  Keyboard Shortcuts, Toolbar