Agilent Technologies InfiniiVision 6000 Series, User Manual, Page: 221 / 368

Making Measurements 5
6000 Series Oscilloscope User’s Guide 221
Integrate
∫
dt (integrate) calculates the integral of the selected source. You
can use integrate to calculate the energy of a pulse in
volt-seconds or measure the area under a waveform.
∫
dt plots the integral of the source using the “Trapezoidal Rule”.
The equation is:
Where
I = integrated waveform
∆
t = point-to-point time difference
y = channel 1, 2, or function 1 + 2, 1 – 2, and 1 * 2 data points
c
o
= arbitrary constant
i = data point index
In Zoom mode, the
∫
dt function does not display in the zoomed
portion of the display.
1
Press the
Math
key, press the
∫
dt
softkey, then press the
Source , Scale , or Offset sofkeys if you want to change the
source, scaling, or offset for the integrate function.
•
Source
— selects the source for
∫
dt. The source can be any
analog channel, or math functions 1 + 2, 1 – 2, and 1 * 2.
• Scale — lets you set your own vertical scale factors for
∫
dt
expressed in unit-seconds/division, where units can be V
(Volts), A (Amps), or W (Watts). Units are set in the
channel
Probe menu. Press the Scale softkey, then turn the
Entry knob to rescale
∫
dt.
•
Offset
— lets you set your own offset for the
∫
Vdt math
function. The offset value is in unit-seconds where units
can be V (Volts), A (Amps), or W (Watts) and is
represented by the center horizontal grid line of the
display. Press the
Offset softkey, then turn the Entry knob
to change the offset for
∫
dt. The integrate calculation is
relative to the source signal’s offset. The following
examples illustrate the effects of signal offset.
n
I
n
= c
o
+
∆
t
∑
y
i
i=0