Agilent Technologies 42A ユーザーズマニュアル
5-23
Making Measurements
Integrate
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.
under a waveform.
∫
dt plots the integral of the source using the "Trapezoidal Rule". Equation is as
follows:
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 Delayed sweep horizontal mode, the
∫
dt function does not display in the
delayed portion of the display.
• Press the
Math
key, press the
∫
dt
softkey, then press the
Settings
softkey
if you want to change the source, scaling, or offset for the integrate
function.
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 allows you to 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
Units are set in the channel
Probe menu. Press the Scale softkey, then turn the
Entry knob to rescale
∫
dt.
Offset allows you to 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 graticule of the display. Press the
and is represented by the center graticule of the display. Press the
Offset softkey,
then turn the Entry knob to change the offset for
∫
dt.
n
I
n
= c
o
+
∆
t
∑
y
i
i=0