Differentiate - Teledyne T3DSO2000 Series User Manual

Differentiate

d/dt (differentiate) calculates the discrete time derivative of the selected source.
Where:
� d = differential waveform.
�
y = channel 1, 2, 3, or 4 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 pixels that
each division has. The T3DSO2000 has 50 pixels–per-division. Take 0.2div as an
example: 0.2*50=10. Δ t is the point-to-point time difference of the 10 points.
You can use the differentiate function to measure the instantaneous slope of a waveform.
For example, the slew rate of an operational amplifier may be measured using the
differentiate function.
Note: Because differentiation is very sensitive to noise, it is helpful to set acquisition
mode to Average.
1.800.561.8187
Figure 69: Differential Function Operation
www. .com
information@itm.com
129