Agilent Technologies 42A Sprinkler User Manual


 
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.
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.
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 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 re pr es en te d b y t he ce nte r gra tic ul e o f t he di sp lay. Pre ss th e Offset s of tk ey,
then turn the Entry knob to change the offset for
dt.
n
I
n
= c
o
+ t y
i
i=0