MPO6002EDU Series Oscilloscope Guide

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Differentiate

d/dt (differentiate) calculates the discrete time derivative of the selected source. 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 differentiate function.

Because differentiation is very sensitive to noise, it is helpful to set acquisition mode to Averaging.

d/dt plots the derivative of the selected source using the "average slope estimate at 4 points" formula. The equation is:

di = yi+4 + 2yi+2 ? 2yi?2 ? yi?4

8 Δ t

Where:

? d = differential waveform.

? y = channel 1, 2, 3, 4, or Math (lower math function) data points.

? i = data point index.

? Δt = point-to-point time difference.

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Example of Differentiate Function

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Square Root

Square root (√) calculates the square root of the selected source.

Where the transform is undefined for a particular input, holes (zero values) appear in the function output.

Example of √ (Square Root)

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Advanced Math Expression

Advanced Math lets users create custom math waveform expressions that incorporate active waveforms,

measurements, and numeric constants.

1 Press the [Math] key. Then, press the Operator softkey and turn the V0 knob to select the expression.

2 Press the Settings softkey to enter the Expression Setting Menu.

3 Press Edit softkey to display the Expression Alpha-Numeric Keypad. Then use the V0 knob or touch screen

gesture to create an expression. When done, press Enter accept.

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Advanced Math Expression Alpha-Numeric Keypad

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· Operators include: +, -, *, /, >, >=, <, <=, ==, !=, &&, || , !

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· PI: π ≈ 3.14159

Math PI property represents the ratio of the circumference of a circle to its diameter.

· Functions include sine, cos, tan, asin, acos, atan, sinh, cosh, tanh, pow, sqrt, log, ln, abs, ceil, floor, intg, diff.

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