Integrate - Agilent Technologies InfiniiVision 5000 Series User Manual

6
Measurements and Math Functions

Integrate

232
 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:

+ t
I = c y
n o i
Where
I = integrated waveform
t = point-to-point time difference
y = channel 1, 2, 3, or 4, or g(t) (internal arithmetic operation)
c = arbitrary constant
o
i = data point index
1 Press the [Math] key, press the Function softkey and select f(t), press the Operator
softkey and select dt. Press the Source, Scale, or Offset sofkeys if you want to
change the source, scaling, or offset for the differentiate function.
Source — selects the source for  dt. (See
•
g(t) as the source.)
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=0
page 225 for information about using
InfiniiVision Oscilloscopes User's Guide