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RIGOL Chapter 6 Operations and Measurements
6-14 DS8000-R User Guide
Diff
Calculates the discrete time derivative of the selected source. For example, you can
use differentiate to measure the instantaneous slope of a waveform.
Click Math → Math1 → Operator to select "Diff":
âš« Click Operation continuously to enable or disable the "Diff" operation function.
âš« Click SourceA to select the channel for Source A. The available channels for
Source A are CH1-CH4 and Ref1-Ref10.
Note: The source of Math2 can be CH1-CH4, Ref1-Ref10, or Math1; the source
of Math3 can be CH1-CH4, Ref1-Ref10, Math1, or Math2; the source of Math4
can be CH1-CH4, Ref1-Ref10, Math1, Math2, or Math3; only the channels that
have been enabled currently can be selected.
âš« Click Offset to set the vertical offset of the operation results. For setting
methods, refer to the descriptions in "Parameter Setting Method".
âš« Click Scale to set the vertical scale of the operation results. For setting methods,
refer to the descriptions in "Parameter Setting Method".
âš« Click AutoSetting to adjust the vertical scale and offset of the operation results
to an optimal value based on the current configuration, so as to better observe.
⚫ Click More → Smooth to set the number of smoothing times in differential
operation. For setting methods, refer to descriptions in "Parameter Setting
Method".
Note: As the high-frequency component of waveform data has a great impact
on the differential operation, you need to adjust the parameter "Smooth" to a
larger value, so as to restore the low-frequency component.
⚫ Click More → Invert to enable or disable the inverted display function of the
waveform.
⚫ Click More → Label to set the label for math operation results. For details, refer
to descriptions in "Math Operation Label".
⚫ Click More → Color Grade to enable or disable the color grade display of the
operation results. When enabled, different colors are displayed on the screen to
indicate the times of data acquisition or acquisition probability.
⚫ Click More → Reset ColorGrade to clear the color grade display and display
the color grade again.
Sqrt
Tip
Because differentiation is very sensitive to noise, it is helpful to set acquisition
mode to "Average".
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