Agilent Technologies 54657A, User Manual

Page: 21 / 89

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.
1
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.
5
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:
d
n
+
i
=
c
n
– c
n
+
1
+
2 i
∆
t
(
2 i
+
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:
I
n
=
∆
t
2
∑
(
c
n
+
c
n
+
1
)
Where
∆
t = point-to-point time difference
c = input 1, 2, or function 1
Operating the Measurement/Storage Module
Function 2
2–5