Agilent Technologies 54657A Guide de l'utilisateur télécharger pdf (Page 21)

Function 2

Function 2 will plot differential or integral waveforms, or perform an FFT

using the input signals connected to the vertical inputs (1 and 2), or using

the function 1 waveform.

Press

± .

2 Toggle the Function 2 On Off softkey to enable math function number 2.

3 Press the Function 2 Menu softkey.

4 Toggle the Operand softkey until the desired source is selected.

F1 uses the result waveform in function 1.

Press the Operation softkey until the desired operation is selected.

Results (F2) are displayed on the screen.

•

dV/dt (differentiate) plots the derivative of the selected source using the

"Central Difference" formula. Equation is as follows:

n+i

–c

n+1+2i

∆t(2i+1)

Where

d = differential waveform

c = input 1, 2, or function 1

i = data point step size

∆t = point-to-point time difference

•

∫dt (integrate) plots the integral of the source using the "Trapezoidal Rule".

Equation is as follows:

∆t

∑

n+1

)

Where

∆t = point-to-point time difference

c = input 1, 2, or function 1

Operating the Measurement/Storage Module

Function 2

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Agilent Technologies 54657A Guide de l'utilisateur Page 21