RIGOL
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":
Click Operation continuously to enable or disable the "Diff" operation function.
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Click SourceA to select the channel for Source A. The available channels for
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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.
Click Offset to set the vertical offset of the operation results. For setting
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methods, refer to the descriptions in "Parameter Setting Method".
Click Scale to set the vertical scale of the operation results. For setting methods,
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refer to the descriptions in "Parameter Setting Method".
Click AutoSetting to adjust the vertical scale and offset of the operation results
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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
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waveform.
Click More → Label to set the label for math operation results. For details, refer
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to descriptions in "Math Operation Label".
Click More → Color Grade to enable or disable the color grade display of the
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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.
Tip
Because differentiation is very sensitive to noise, it is helpful to set acquisition
mode to "Average".
Sqrt
6-14
Chapter 6 Operations and Measurements
DS8000-R User Guide