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Math Function Operation
The oscilloscope supports differential (d/dt), integral (∫dt) and square root ( )
math functions.
Differentiate
d/dt (differentiate) calculates the discrete time derivative of the selected source.
Where:
d = differential waveform.
y = channel 1, 2 data points.
i = data point index.
Δ t = point- to- point time difference.
The dx option under d/dt math function operation menu shows the point- to- point
time difference, and it ranges from 0.02div to 0.40div. “div” indicates the number
of the pixel points that each division has. The oscilloscope has 50 pixel points per
division. Take 0.2div as an example: 0.2*50=10. To calculate the discrete time
derivative of the selected source, and the Δ t is the point- to- point time difference.
Figure 75 Different Function Operation
You can use differentiate to measure the instantaneous slope of a waveform. For
example, the slew rate of an operational amplifier may be measured using the
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